MD MT-20 Service Manual
52
MD-MT20/20C/20W CONTENTS Page SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT20W ONLY) .............................................................................. 2 SPECIFICATIONS ................................................................................................................................................................. 3 NAMES OF PARTS ............................................................................................................................................................... 4 OPERATION MANUAL .......................................................................................................................................................... 5 QUICK GUIDE (MD-MT20 ONLY) ......................................................................................................................................... 8 DISASSEMBLY .................................................................................................................................................................... 10 REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 11 ADJUSTMENT ...................................................................................................................................................................... 12 NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 25 TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 25 VOLTAGE ............................................................................................................................................................................ 26 BLOCK DIAGRAM ............................................................................................................................................................... 27 SCHEMATIC DIAGRAM ...................................................................................................................................................... 28 WIRING SIDE OF P.W.BOARD ........................................................................................................................................... 31 WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 36 TROUBLE SHOOTING ........................................................................................................................................................ 37 FUNCTION TABLE OF IC .................................................................................................................................................... 40 CIRCUIT DESCRIPTION ..................................................................................................................................................... 42 PARTS GUIDE/EXPLODED VIEW PACKING OF THE SET (MD-MT20 ONLY) SERVICE MANUAL SHARP CORPORATION No. S6943MDMT20// This document has been published to be used for after sales service only. The contents are subject to change without notice. MD-MT20(S) MD-MT20C(S) MD-MT20W(BL) MD-MT20W(GL) MD-MT20W(S) • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used. Illustration: MD-MT20/20C Illustration: MD-MT20W
Transcript of MD MT-20 Service Manual
MD-MT20/20C/20W
– 1 –
CONTENTSPage
SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT20W ONLY).............................................................................. 2SPECIFICATIONS ................................................................................................................................................................. 3NAMES OF PARTS ............................................................................................................................................................... 4OPERATION MANUAL .......................................................................................................................................................... 5QUICK GUIDE (MD-MT20 ONLY) ......................................................................................................................................... 8DISASSEMBLY .................................................................................................................................................................... 10REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 11ADJUSTMENT ...................................................................................................................................................................... 12NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 25TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 25VOLTAGE ............................................................................................................................................................................ 26BLOCK DIAGRAM ............................................................................................................................................................... 27SCHEMATIC DIAGRAM ...................................................................................................................................................... 28WIRING SIDE OF P.W.BOARD ........................................................................................................................................... 31WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 36TROUBLE SHOOTING ........................................................................................................................................................ 37FUNCTION TABLE OF IC.................................................................................................................................................... 40CIRCUIT DESCRIPTION ..................................................................................................................................................... 42PARTS GUIDE/EXPLODED VIEWPACKING OF THE SET (MD-MT20 ONLY)
SERVICE MANUAL
SHARP CORPORATION
No. S6943MDMT20//
This document has been published to be usedfor after sales service only.The contents are subject to change without notice.
MD-MT20(S)MD-MT20C(S)MD-MT20W(BL)MD-MT20W(GL)MD-MT20W(S)
• In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified beused.
Illustration: MD-MT20/20C
Illustration: MD-MT20W
MD-MT20/20C/20W
– 2 –
Figure 2-1 Figure 2-2
Precaution to be taken when replacing and servicing the Laser Pickup.The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements.However, the following precautions must be observed during servicing to protect your eyes against exposure to the laser beam.(1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.(2) The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior
to shipping.(3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.(4) Under no circumstances look directly into the Pickup Lens at any time.(5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result
in hazardous radiation exposure.
SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT20W ONLY)
VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.VARNING! Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.
Precaution to be taken when replacing and servicing the laser pickup.The following precautions must be observed during servicing to protect your eyes against exposure to the laser.
Warning of possible eye damage when repairing:If the AC adaptor or batteries are connected when the top houising (disc cover) of the unit is removed, and the PLAY key ispressed, the laser will light up during focus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will leak from theopening between the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you must not lookat the laser during repair. Before repairing be sure to disconnect the AC adaptor and remove the batteries.
Magnet head
Optical pick-upTop Cabinet
CAUTION
Laser Diode PropertiesMaterial: GaAIAsWavelength: 785 nmPulse time:Read mode; 0.8 mW ContinuousWrite mode; max. 10 mW 0.5S
min. cycle 1.5S Repetition
This Portable MiniDisc Recorder is classified as a CLASS 1 LASER product.The CLASS 1 LASER PRODUCT label is located on the bottom.Use the Portable MiniDisc Recorder only in accordance with the instructions given inthis manual and do not attempt to interfere with the interlock switch or make anyother adjustment as this may result in exposure to hazardous radiation.
Magnet Head Laser Beam
Optical Pick-UpMain PWBSpindle motor
MechanismChassis
MD-MT20/20C/20W
– 3 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TOTHE OPERATION MANUAL.
SPECIFICATIONS
Specifications for this model are subject to change without priornotice
General
Power source: DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD-T20BT) x 1
DC 5V: AC adaptor (AC 110 - 240V, 50/60 Hz)DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2DC 4.5V: Separately available car adaptor, AD-CA20X
(for cars with a 12-24V DC negative earth electri-cal system)
Power consumption: 0.15A (AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)Approx. 6 hours (fully charged)(When using the AC adaptor included with the unit)
Battery life:When using the rechargeablebattery (fully charged) includedwith the unit
When using two, commerciallyavailable, high capacity, “AA”size (LR6), alkaline batteries
Continuous recording:Approx. 7.5 hours
Continuous recording:Approx. 7.5 hours
Continuous play:Approx. 12 hours
Continuous play:Approx. 15 hours
Unmeasurable (less than ±0.001% W. peak)
The continuous recording time is for analogue inputs when the volume level is set to“VOL 0”.The continuous play time shows the value when the volume level is set to “VOL 15”.The above values are the standard values when the unit is charged and used at anambient temperature of 20°C (68°F).The operating time when using an alkaline batteries may be different, depending onthe type and manufacturer of the battery, and on the operating temperature.
Input sensitivity: Recording level Reference input level Input impedance
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level: Specifiedoutput
Maximumoutput level
Loadimpedance
Earphones — 10 mW + 10 mW 32 ohms
LINE 250 mV(-12dB)
— 10 k ohms
Dimensions: Width: 87.9 mm (3-7/16")Height: 29.8 mm (1-3/16")Depth: 79.7 mm (3-1/8")
Weight: 235 g (0.52 lbs.) with rechargeable battery
Input socket: Line/optical digital, microphone (powered by the main unit)
Output socket: Earphones (impedance: 32 ohms)/remote control unit
MiniDisc Recorder
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser pick-up
Audio channels: Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response: 20 – 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 – 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding: ATRAC (Adaptive Transform Acoustic Coding), 24-bit com-puted type
Recording method: Magnetic modulation overwrite method
Sampling frequency: 44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz,and then recorded.)
Wow and flutter:
■ General
Power source: DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD-T20BT) x 1
DC 5V: AC adaptor (AC 120V, 60 Hz)DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2DC 4.5V: Separately available car adaptor, AD-CA20X
(for cars with a 12-24V DC negative ground elec-trical system)
Power consumption: 7.5W(AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)Approx. 6 hours (fully charged)(When using the AC adaptor included with the unit)
Battery life:When using the rechargeablebattery (fully charged) includedwith the unit
When using two, commerciallyavailable, high capacity, “AA”size (LR6), alkaline batteries
Continuous recording:Approx. 7.5 hours
Continuous recording:Approx. 7.5 hours
Continuous play:Approx. 12 hours
Continuous play:Approx. 15 hours
Unmeasurable (less than ±0.001% W. peak)
● The continuous recording time is for analog inputs when the volume level is set to “VOL0”.
● The continuous play time shows the value when the volume level is set to “VOL 15”.● The above values are the standard values when the unit is charged and used at an
ambient temperature of 68°F (20°C).● The operating time when using an alkaline battery may be different, depending on the
type and manufacturer of the battery, and on the operating temperature.
Input sensitivity: Recording level Reference input level Input impedance
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level: Specifiedoutput
Maximumoutput level
Loadimpedance
Headphones — 10 mW + 10 mW 16 ohms
LINE 250 mV(-12dB)
— 10 k ohms
Dimensions: Width: 3-7/16" (87.9 mm)Height: 1-3/16" (29.8 mm)Depth: 3-1/8" (79.7 mm)
Weight: 0.52 lbs. (235 g) with rechargeable battery
Input jack: Line/optical digital, microphone (powered by the main unit)
Output jack: Headphones (impedance: 19 ohms)/remote control unit
■ MiniDisc Recorder
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser pick-up
Audio channels: Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response: 20 – 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 – 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding: ATRAC (Adaptive Transform Acoustic Coding), 24-bit com-puted type
Recording method: Magnetic modulation overwrite method
Sampling frequency: 44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz,and then recorded.)
Wow and flutter:
MD-MT20/20C MD-MT20W
MD-MT20/20C/20W
– 4 –
NAMES OF PARTSIllustration: MD-MT20/20CMain unit
1. Monaural Long-Play Mode Indicator 2. Record Indicator 3. Level Meter 4. Fast Play Indicator 5. Repeat Indicator 6. TOC Indicator 7. Battery Indicator 8. Random Indicator 9. Track Number Indicator10. Character/Time Information Indicator11. Synchro Recording Indicator12. Disc Mode Indicator13. Disc Name Indicator14. Track Name Indicator15. Remaining Recording Time Indicator16. Total Track Number Indicator
17. Edit/Auto Mark/Time Mark Button18. Mode Button19. Display/Character Select Button20. Bass/Delete Button21. Enter/Fast Play/Synchro Button22. Volume Up/Cursor Button23. Volume Down/Cursor/Charge Button24. Record/Track Mark Button25. Fast Reverse/Recording Level Down/
Name Select Button26. Stop/Power Off Button27. Play/Pause Button28. Fast Forward/Recording Level Up/
Name Select Button
29. Open Lever30. Remote Control/Earphones Socket31. Optical/Line Input Socket32. Microphone Input Socket
33. Hold Switch34. 5V DC Input Socket35. Battery Cover
33
34
35
1 2 3 4 5 6
7
8910
11121314
15 16
22
17
28
18 20 21
23
27262524
19
2930
3231
4
2 5
1
6789
3
Remote control unit
1. Headphones Jack (MD-MT20/20C)
2. Fast Reverse/Recording Level Down/Name Select Button
3. Hold Switch 4. Play/Pause Button 5. Fast Forward/Recording Level Up/
Name Select Button 6. Stop/Power Off Button 7. Volume Up/Cursor Button 8. Bass/Delete/Track Mark Button 9. Volume Down/Cursor Button
1. Earphones Socket (MD-MT20W)
MD-MT20/20C/20W
– 5 –
OPERATION MANUALP
OW
ER
SO
UR
CE
Thi
s un
it ca
n be
use
d w
ith t
he f
ollo
win
g po
wer
sou
rces
: a
rech
arge
able
bat
tery
, an
AC
adap
tor,
com
mer
cial
ly a
vaila
ble
alka
line
batte
ries,
and
a s
epar
atel
y av
aila
ble
car
adap
tor
(AD
-CA
20X
).
Rec
har
gea
ble
bat
tery
po
wer
Whe
n th
e re
char
geab
le b
atte
ry is
use
d fo
r the
first
tim
e or
whe
n yo
u w
ant
to u
se it
afte
r a
long
per
iod
of d
isus
e, b
e su
re to
cha
rge
it fu
lly.
1O
pen
the
batte
ry c
over
.S
lide
the
batte
ry c
over
as
far
as it
will
go to
the
outs
ide
and
then
lift
to o
pen
it.If
the
batte
ry c
over
is li
fted
with
out b
e-in
g sl
id a
ll th
e w
ay o
ut, i
t may
bre
ak.
2In
sert
the
rech
arge
able
bat
tery
acc
ord-
ing
to th
e po
larit
y m
arke
d on
the
botto
mof
the
unit.
3C
lose
the
batte
ry c
over
.
4P
lug
the
AC
ada
ptor
into
the
AC
soc
ket,
and
then
inse
rt th
e pl
ug o
n th
e A
C a
dap-
tor
lead
into
the
DC
IN 5
V s
ocke
t.
5P
ress
the
CH
AR
GE
(V
OLU
ME
dow
n)bu
tton
of t
he m
ain
unit
to b
egin
cha
rg-
ing. “
” w
ill a
ppea
r, an
d th
e ba
ttery
will
beg
in c
harg
ing.
Aft
er
ab
ou
t 4
ho
urs
ha
ve p
ass
ed
,“
” w
ill g
o ou
t.T
his
indi
cate
s th
at th
e ba
ttery
cha
rg-
ing
is a
bout
90%
com
plea
te.
To c
harg
e th
e ba
ttery
ful
ly,
cont
inue
char
ging
for
abou
t 2 m
ore
hour
s.(I
n th
is c
ase,
you
do
not n
eed
to p
ress
the
CH
AR
GE
bu
tto
n.
Eve
n i
f th
eC
HA
RG
E b
utto
n is
pre
ssed
, “
”w
ill n
ot a
ppea
r.)
No
tes:
Afte
r cha
rgin
g ha
s be
en c
ompl
eted
, the
AC
ada
ptor
may
be
left
conn
ecte
d.(F
or e
xam
ple,
whe
n ch
argi
ng a
t nig
ht)
The
bat
tery
will
not
be
char
ged
whe
n th
epo
wer
to th
e m
ain
unit
is tu
rned
on.
Do
not f
orce
ope
n th
e ba
ttery
cov
er to
o w
ide.
Do
not u
se a
rech
arge
able
bat
tery
or a
nA
C a
dapt
or o
ther
tha
n th
ose
spec
ified
(A
CC
ES
SO
RIE
S).
The
cha
rgin
g tim
e w
ill v
ary,
dep
endi
ngon
the
cond
ition
of t
he b
atte
ry.
Whe
n th
e ba
ttery
is c
harg
ed fo
r the
firs
ttim
e or
is c
harg
ed a
fter
not b
eing
use
dfo
r a lo
ng p
erio
d, th
e op
erat
ing
time
may
be s
hort
er t
han
norm
al.T
he b
atte
ry li
few
ill r
ecov
er w
ith n
orm
al u
se i.
e. c
harg
-in
g an
d di
scha
rgin
g.To
avo
id s
hort
enin
g th
e se
rvic
e lif
e of
the
batte
ry o
nly
rech
arge
the
batte
ry a
fter
itha
s be
en c
ompl
etel
y di
scha
rged
.
1 2 3
54
AC
110
-240
V,50
/60
Hz
Inse
rt s
ecur
ely,
all t
he w
ay in
.
To th
e D
C IN
5V
soc
ket
AC
120
V,
60 H
zIn
sert
sec
urel
y,al
l the
way
in.
To th
e D
C IN
5V
jack
Fo
r M
D-M
T20
/20C
Fo
r M
D-M
T20
W
RE
CO
RD
ING
US
ING
TH
E O
PT
ICA
L D
IGIT
AL
CA
BL
E
Thi
s is
the
met
hod
used
for
reco
rdin
g di
gi-
tal s
igna
ls fr
om C
Ds
or M
Ds
exac
tly a
s th
eyar
e st
ored
on
the
orig
inal
. Com
pare
d to
re-
cord
ings
mad
e fr
om a
nalo
gue
inpu
ts, d
igi-
tal r
ecor
ding
s ha
ve e
xtre
mel
y hi
gh-q
ualit
yso
und.
1C
onne
ct th
e ex
tern
al e
quip
men
t.
2S
tart
rec
ord
ing
.
Syn
chro
rec
ord
ing
:
Bef
ore
star
ting
a sy
nchr
o re
cord
ing,
pe
rfo
rm t
he
fo
llow
ing
ste
ps
on
th
eeq
uipm
ent c
onne
cted
to th
is u
nit.
(1)
Firs
t, pu
t it i
n th
e pl
ayba
ck m
ode.
(2)
Nex
t, pu
t it i
n th
e pa
use
mod
e.(3
) F
inal
ly,
posi
tion
it at
the
beg
inni
ngof
the
trac
k yo
u w
ant t
o re
cord
.
(1)
Inse
rt a
rec
orda
ble
Min
iDis
c, a
ndth
en p
ress
the
RE
C b
utto
n.(2
)P
ress
the
EN
TE
R/S
YN
C b
utto
n.(3
)S
tart
the
play
back
on
the
equi
pmen
tco
nnec
ted
to th
is u
nit.
Man
ual
rec
ord
ing
:(1
)In
sert
a r
ecor
dabl
e M
iniD
isc,
and
then
pre
ss th
e R
EC
but
ton.
(2)
Pre
ss th
e b
utto
n.
Whe
n re
cord
ing
from
dig
ital i
nput
s,it
is n
ot n
eces
sary
to a
djus
t the
reco
rd-
ing
leve
l.
No
tes:
Thi
s un
it in
corp
orat
es a
sam
plin
g ra
teco
nver
ter.
Whe
n th
is u
nit
is c
onne
cted
to
digi
tal
equi
pmen
t suc
h as
CS
/BS
tune
rs o
r DAT
tape
reco
rder
s th
at u
se a
diff
eren
t sam
-pl
ing
freq
uenc
y (3
2 kH
z or
48
kHz)
, re-
cord
ings
can
stil
l be
mad
e. (
The
sam
-pl
ing
freq
uenc
y of
this
uni
t is
44.1
kH
z.)
Whe
n m
akin
g a
digi
tal r
ecor
ding
from
apo
rtab
le C
D p
laye
r (if
the
pla
yer
has
aso
und
skip
pre
vent
ion
func
tion
and
this
func
tion
is tu
rned
on)
the
optic
al o
utpu
tw
ill d
rop
out a
nd d
igita
l rec
ordi
ng w
ill n
otbe
pos
sibl
e. B
e su
re t
o tu
rn t
he s
ound
skip
pre
vent
ion
func
tion
off.
Th
ere
are
case
s w
her
e d
igita
l rec
ord
ing
may
be
imp
oss
ible
.In
the
fol
low
ing
case
s di
gita
l rec
ordi
ng is
impo
ssib
le,
even
if
you
are
usin
g di
gita
lca
bles
.
Whe
n yo
u at
tem
pt t
o m
ake
a ne
w d
igita
lre
cord
ing
from
a tr
ack
that
was
dig
itally
re-
cord
ed o
n a
Min
iDis
c.M
iniD
iscs
are
des
igne
d so
that
onl
y fir
stge
nera
tion
digi
tal c
opie
s ca
n be
mad
e.F
urth
er d
igita
l cop
ies
are
prev
ente
d by
the
SC
MS
(S
eria
l C
opy
Man
agem
ent
Sys
tem
).
Pla
ybac
kD
igita
l cab
le
CD
pla
yer,
MD
play
er, e
tc.
Dig
itally
rec
orde
d M
iniD
isc
Ana
logu
e re
cord
ing
ispo
ssib
le.
Rec
ordi
ng
Pla
ybac
kD
igita
l cab
leR
ecor
ding
MD
pla
yer
MD-MT20/20C/20W
– 6 –
If th
e ho
ld fu
nctio
n is
act
ive
whi
lst t
he p
ower
is t
urne
d of
f, th
e po
wer
can
not
be t
urne
don
by
mis
take
and
the
bat
tery
will
not
be
acci
dent
ally
dra
ined
.
CO
NV
EN
IEN
T O
PE
RA
TIO
N O
F T
HE
UN
IT
< H
ow
to
rea
d t
he
bat
tery
ind
icat
or
>
Whe
n th
e ba
ttery
is c
ompl
etel
y di
scha
rged
,th
e ba
ttery
indi
cato
r will
flash
. Rec
harg
e th
eba
ttery
or r
epla
ce th
e al
kalin
e ba
tterie
s w
itha
new
one
.W
hen
the
batte
ry h
as r
un c
ompl
etel
y ou
t,“B
AT
T E
MP
TY
” w
ill a
ppea
r. T
hen,
the
pow
er w
ill be
dis
conn
ecte
d au
tom
atic
ally
.
No
tes:
Whe
n us
ing
the
unit
with
alk
alin
e ba
tterie
sor
a re
char
geab
le b
atte
ry, t
he b
atte
ry in
di-
cato
r w
ill no
t cor
rect
ly d
ispl
ay th
e re
mai
n-in
g ca
paci
ty fo
r app
roxi
mat
ely
10 s
econ
dsaf
ter t
he p
ower
has
bee
n tu
rned
on.
Whe
n th
e A
C a
dapt
or in
clud
ed w
ith th
is u
nit
or a
sep
arat
ely
avai
labl
e ca
r ad
apto
r is
used
, the
bat
tery
indi
cato
r will
not b
e sh
own.
The
num
ber
of b
ars
show
n in
the
batte
ryin
dica
tor
may
inc
reas
e or
dec
reas
e, d
e-pe
ndin
g on
the
oper
atio
n be
ing
perfo
rmed
.Th
is is
nor
mal
.
To p
reve
nt
the
un
it f
rom
bei
ng
op
erat
ed b
y m
ista
ke
To a
void
acc
iden
tal
oper
atio
n of
the
uni
t,us
e th
e ho
ld fu
nctio
n.
Mov
e th
e H
OLD
sw
itch
to t
he s
afet
y po
si-
tion
(dire
ctio
n in
dica
ted
by th
e ar
row
).
Whe
n th
e un
it is
in th
e ho
ld m
ode,
pre
ss-
ing
the
butto
ns w
ill h
ave
no a
ffect
.
To c
an
cel
the
ho
ld m
od
e,
mo
ve t
he
HO
LD s
witc
h aw
ay fr
om th
e sa
fety
po-
sitio
n (t
he o
ppos
ite d
irect
ion
of t
he a
r-ro
w).
Bat
tery
indi
cato
r
Sin
ce th
e ba
ttery
leve
l is
very
low
, you
cann
ot s
tart
rec
ordi
ng o
r ed
iting
.
Whe
n th
e ba
ttery
leve
l is
high
Whe
n th
e ba
ttery
leve
l is
very
low
Rem
ote
cont
rol u
nit
Mai
nun
it
Can
be
oper
ated
from
eith
er th
ere
mot
e co
ntro
l uni
t or
the
mai
n un
it.
Can
onl
y be
ope
rate
dfr
om th
e re
mot
eco
ntro
l uni
t.
Can
onl
y be
ope
rate
dfr
om th
e m
ain
unit.
Can
not b
e op
erat
edfr
om e
ither
the
rem
ote
cont
rol u
nit o
rth
e m
ain
unit.
Can
cel
Can
cel
Can
cel
Can
cel
Hol
d
Hol
d
Hol
d
Hol
d
Ch
ecki
ng
th
e re
mai
nin
g a
mo
un
to
f b
atte
ry le
vel
The
rem
aini
ng a
mou
nt o
f ba
ttery
lev
el i
ssh
own
by th
e ba
ttery
indi
cato
r (
) d
ur-
ing
oper
atio
n.
TR
OU
BL
ES
HO
OT
ING
Mo
istu
re c
on
den
sati
on
In t
he
follo
win
g c
ases
, co
nd
ensa
tio
nm
ay f
orm
insi
de
the
un
it.
Sho
rtly
afte
r tu
rnin
g on
a h
eate
r.W
hen
the
unit
is p
lace
d in
a ro
om w
here
ther
e is
exc
essi
ve s
team
or
moi
stur
e.W
hen
the
unit
is m
oved
fro
m a
coo
lpl
ace
to a
war
m p
lace
.
Wh
en th
e u
nit
has
co
nd
ensa
tio
n in
sid
e,th
e d
isc
sig
nal
s ca
nn
ot b
e re
ad, a
nd
the
un
it m
ay n
ot
fun
ctio
n p
rop
erly
.If
this
hap
pens
, rem
ove
the
disc
.T
he c
onde
nsat
ion
shou
ld e
vapo
rate
inap
prox
imat
ely
1 ho
ur. T
he u
nit w
ill th
enfu
nctio
n pr
oper
ly.
Man
y po
tent
ial “
prob
lem
s” c
an b
e re
solv
ed b
y th
e ow
ner
with
out c
allin
g a
serv
ice
tech
ni-
cian
.If
som
ethi
ng s
eem
s to
be
wro
ng w
ith th
is p
rodu
ct, c
heck
the
follo
win
g be
fore
cal
ling
your
auth
oris
ed S
HA
RP
dea
ler
or s
ervi
ce c
entr
e.
PR
OB
LE
MC
AU
SE
Th
e u
nit
do
es n
ot
turn
on
.
Is th
e A
C a
dapt
or d
isco
nnec
ted?
Is th
e ba
ttery
exh
aust
ed?
Is th
e un
it in
the
hold
mod
e?H
as c
onde
nsat
ion
form
ed in
side
the
unit?
Is th
e un
it be
ing
influ
ence
d by
mec
hani
cal s
hock
or
byst
atic
ele
ctric
ity?
Is th
e vo
lum
e se
t too
low
?Is
the
rem
ote
cont
rol u
nit o
r th
e ea
rpho
nes
plug
ged
in?
Are
you
tryi
ng to
pla
y a
Min
iDis
c w
ith d
ata
on it
inst
ead
of a
Min
iDis
c co
ntai
ning
mus
ic?
Is th
e un
it in
the
hold
mod
e?Is
the
batte
ry e
xhau
sted
?Is
the
rem
ote
cont
rol u
nit p
lug
or th
e ea
rpho
ne p
lug
in-
sert
ed fi
rmly
?
Is th
e ba
ttery
exh
aust
ed?
Is th
e un
it be
ing
subj
ecte
d to
exc
essi
ve v
ibra
tion?
Has
the
tra
ck n
umbe
r or
cha
ract
er i
nfor
mat
ion
been
writ
ten
on th
e di
sc y
et?
Is th
e un
it in
the
reco
rdin
g or
edi
ting
mod
e?
Is th
e M
iniD
isc
prot
ecte
d ag
ains
t acc
iden
tal e
rasu
re?
Is th
e un
it co
nnec
ted
prop
erly
to th
e ot
her
equi
pmen
t?Is
the
AC
ada
ptor
unp
lugg
ed o
r di
d a
pow
er fa
ilure
oc-
cur
whi
lst r
ecor
ding
or
editi
ng?
Is th
e un
it in
the
hold
mod
e?Is
an
optic
al s
igna
l bei
ng o
utpu
t fro
m th
e ex
tern
al e
quip
-m
ent?
Rea
d th
e op
erat
ion
man
ual f
or th
e ex
tern
al e
quip
men
t.
No
so
un
d is
hea
rd fr
om
the
earp
ho
nes
.
Wh
en t
he
op
erat
ion
bu
tto
ns
are
pre
ssed
, th
eu
nit
do
es n
ot
resp
on
d.
So
me
sou
nd
s ar
esk
ipp
ed.
Th
e M
iniD
isc
can
no
t b
eej
ecte
d.
Rec
ord
ing
an
d e
dit
ing
are
imp
oss
ible
.
If t
rou
ble
occ
urs
Whe
n th
is p
rodu
ct i
s su
bjec
ted
to s
tron
gex
tern
al i
nter
fere
nce
(mec
hani
cal
shoc
k,ex
cess
ive
stat
ic e
lect
ricity
, ab
norm
al s
up-
ply
volta
ge d
ue t
o lig
htni
ng,
etc.
) or
if it
isop
erat
ed in
corr
ectly
, it m
ay m
alfu
nctio
n.If
such
a p
robl
em o
ccur
s, d
o th
e fo
llow
ing:
1.U
nplu
g th
e A
C a
dapt
or f
rom
the
AC
sock
et.
2.R
emov
e th
e ba
ttery
.3.
Leav
e th
e un
it co
mpl
etel
y un
pow
ered
for
appr
oxim
atel
y 30
sec
onds
.
4.P
lug
the
AC
ada
ptor
bac
k in
to t
he A
Cso
cket
and
ret
ry th
e op
erat
ion.
If st
rang
e so
unds
, sm
ell o
r sm
oke
com
e ou
tof
the
unit
or a
n ob
ject
is d
ropp
ed in
to th
eun
it, r
emov
e th
e A
C a
dapt
or f
rom
the
AC
sock
et
imm
ed
iate
ly
an
d
con
tact
a
nau
thor
ised
SH
AR
P s
ervi
ce c
entr
e.
MD-MT20/20C/20W
– 7 –
Whe
n th
e nu
mbe
r of t
rack
s us
ed re
ache
sth
e lim
it, r
egar
dles
s of
the
rem
aini
ng r
e-co
rdin
g tim
e, f
urth
er r
ecor
ding
will
be
impo
ssib
le.
(Max
imum
num
ber
of tr
acks
: 255
)If
a M
iniD
isc
has
been
rec
orde
d or
ed-
ite
d r
ep
ea
ted
ly o
r if
a M
iniD
isc
ha
ssc
ratc
hes
on it
, it m
ay n
ot b
e po
ssib
le to
reco
rd th
e m
axim
um n
umbe
r of t
rack
s on
it. If th
ere
are
scra
tche
s on
a d
isc,
the
uni
tw
ill a
utom
atic
ally
avo
id re
cord
ing
in th
ose
area
s. T
he re
cord
ing
time
will
be
redu
ced.
Whe
n th
e re
mai
ning
rec
ordi
ng t
ime
of a
disc
is d
ispl
ayed
, sh
ort
trac
ks le
ss t
han
12 s
econ
ds lo
ng m
ay n
ot b
e in
clud
ed in
the
tota
l.
For
Min
iDis
cs o
n w
hich
repe
ated
reco
rd-
ing
an
d e
diti
ng
op
era
tion
s w
ere
pe
r-fo
rmed
, the
CO
MB
INE
func
tion
may
not
wor
k.
A c
lust
er (
abou
t 2 s
econ
ds)
is n
orm
ally
the
min
imum
uni
t of r
ecor
ding
. So,
eve
n if
a tra
ckis
less
than
2 s
econ
ds lo
ng, i
t will
use
abou
t2
seco
nds
of s
pace
on
the
disc
.Th
eref
ore,
the
time
actu
ally
ava
ilabl
e fo
r re-
cord
ing
may
be
less
than
the
rem
aini
ng ti
me
disp
laye
d.If
ther
e ar
e sc
ratc
hes
on d
iscs
, th
ose
sec-
tions
will
be a
utom
atic
ally
avo
ided
(no
reco
rd-
ing
will
be p
lace
d in
thos
e se
ctio
ns).
Ther
e-fo
re, t
he re
cord
ing
time
will
be re
duce
d.
For
Min
iDis
cs o
n w
hich
repe
ated
reco
rd-
ing
and
editi
ng w
ere
perf
orm
ed,
som
eso
unds
may
be
skip
ped
whi
lst c
uein
g an
dre
view
ing.
If t
he
re a
re s
cra
tch
es
or
du
st o
n a
Min
iDis
c, th
e tr
ack
num
bers
follo
win
g th
attr
ack
will
be
incr
ease
d by
one
.
MIN
IDIS
C S
YS
TE
M L
IMIT
AT
ION
S
Min
iDis
cs a
re r
ecor
ded
usin
g a
diffe
rent
sys
tem
tha
n is
use
d fo
r ca
sset
te t
apes
or
DA
Tre
cord
ings
. T
here
fore
, th
e fo
llow
ing
cond
ition
s m
ay b
e en
coun
tere
d, d
epen
ding
on
how
the
disc
has
bee
n re
cord
ed o
r ed
ited.
The
se a
re d
ue to
sys
tem
lim
itatio
ns, a
nd s
houl
d be
cons
ider
ed n
orm
al.
Eve
n i
f th
e m
axim
um
rec
ord
ing
tim
e o
f a
Min
iDis
c h
as n
ot
bee
nre
ach
ed,
“DIS
C F
UL
L”
or
“TO
CF
UL
L”
may
be
dis
pla
yed
.
Eve
n i
f th
e n
um
ber
of
trac
ks a
nd
the
re
co
rdin
g
tim
e
ha
ve
n
ot
reac
hed
th
e li
mit
, “D
ISC
FU
LL
”m
ay b
e d
isp
laye
d.
Eve
n i
f se
vera
l sh
ort
tra
cks
are
eras
ed,
the
rem
ain
ing
rec
ord
ing
tim
e m
ay n
ot
sho
w a
n in
crea
se.
Two
tra
cks
may
no
t b
e co
mb
ined
in e
dit
ing
.
Th
e to
tal o
f th
e re
cord
ed t
ime
and
tim
e re
mai
nin
g o
n a
dis
c m
ay n
ot
add
up
to
th
e m
axim
um
po
ssib
lere
cord
ing
tim
e.
Wh
en r
eco
rded
tra
cks
are
pla
yed
bac
k u
sin
g th
e cu
e an
d r
evie
w o
p-
erat
ion
s, s
om
e so
un
ds
may
be
skip
ped
.
A t
rack
nu
mb
er c
an b
e cr
eate
d i
nth
e m
idd
le o
f a
trac
k.
●T
he b
atte
ry is
run
dow
n.
●N
othi
ng is
rec
orde
d.
●N
o co
py c
an b
e m
ade
beca
use
of th
eS
CM
S c
opyr
ight
sys
tem
.
●A
trac
k ca
nnot
be
edite
d.
●R
ecor
ding
can
not b
e pe
rfor
med
corr
ectly
due
to v
ibra
tion
or s
hock
inth
e un
it.
●E
ditin
g is
impo
ssib
le.
●T
he d
isc
is s
crat
ched
.
●P
oor
conn
ectio
n of
the
digi
tal c
able
.
●T
he d
isc
is o
ut o
f rec
ordi
ng s
pace
.
●T
he u
nit i
s in
the
hold
mod
e.
●T
he E
JEC
T le
ver
was
mov
ed d
urin
gre
cord
ing
or e
ditin
g.
●A
dis
c ha
s no
t bee
n lo
aded
.
●Y
ou tr
ied
to r
ecor
d on
a p
layb
ack-
onl
ydi
sc.
●Im
prop
er p
ower
is b
eing
sup
plie
d.
●T
he M
D is
writ
e pr
otec
ted.
●Y
ou tr
ied
to r
ecor
d w
ithou
t loa
ding
an
MD
.●
A p
layb
ack-
only
MD
was
load
ed a
ndth
e R
EC
but
ton
was
pre
ssed
whe
n th
epo
wer
was
off.
●T
he d
isc
is d
amag
ed.
●S
ince
a tr
ack
num
ber
is c
urre
ntly
bei
nglo
cate
d or
writ
ten
to, t
he u
nit c
anno
tac
cept
you
r co
mm
and.
●Y
ou h
ave
com
e to
the
conc
lusi
on th
atth
e un
it is
out
of o
rder
.
●T
he te
mpe
ratu
re is
too
high
.
●A
larg
e po
rtio
n of
the
disc
has
bee
nda
mag
ed.
●T
here
is n
o sp
ace
left
for
reco
rdin
gch
arac
ter
info
rmat
ion
(tra
ck n
ames
,di
sc n
ames
, etc
.).
●T
he tr
ack
has
been
pro
tect
ed fr
ombe
ing
eras
ed.
●A
larg
e po
rtio
n of
the
disc
has
bee
nda
mag
ed.
●T
here
is a
n er
ror
in th
e re
cord
ed s
igna
l.
●A
dis
c w
hich
con
tain
s da
ta o
ther
than
mus
ic w
as p
laye
d.●
The
re is
an
erro
r in
the
sign
al fr
om th
edi
sc.
●C
harg
e th
e re
char
geab
le b
atte
ry o
rre
plac
e th
e al
kalin
e ba
ttery
(or
use
the
AC
ada
ptor
for
pow
er).
●R
epla
ce th
e di
sc w
ith a
rec
orde
d di
sc.
●R
ecor
d us
ing
the
anal
og c
able
.
●C
hang
e th
e st
op p
ositi
on o
f the
trac
kan
d th
en tr
y ed
iting
it.
●R
e-re
cord
or
repl
ace
it w
ith a
noth
erre
cord
able
dis
c.
●C
heck
the
num
ber
of tr
acks
.
●If
the
soun
d yo
u he
ar is
not
rig
ht, t
ryre
cord
ing
agai
n.●
Rep
lace
the
disc
with
ano
ther
reco
rdab
le d
isc.
●C
onne
ct th
e di
gita
l cab
le s
ecur
ely.
●R
epla
ce it
with
ano
ther
rec
orda
ble
disc
.
●R
etur
n th
e H
OLD
sw
itch
to it
s or
igin
alpo
sitio
n.
●Tu
rn o
ff th
e po
wer
and
rem
ove
the
Min
iDis
c.
●Lo
ad a
dis
c.
●R
epla
ce it
with
a r
ecor
dabl
e di
sc.
●U
se o
ne o
f the
spe
cifie
d po
wer
sour
ces.
●M
ove
the
writ
e pr
otec
tion
knob
bac
k to
its o
rigin
al p
ositi
on.
●Lo
ad a
rec
orda
ble
MD
.●
Rep
lace
it w
ith a
rec
orda
ble
MD
.
●R
eloa
d th
e di
sc o
r re
plac
e it.
●R
epla
ce it
with
ano
ther
rec
orde
d di
sc.
●W
ait f
or a
whi
le a
nd tr
y th
e op
erat
ion
agai
n.
●To
hav
e it
repa
ired,
go
to th
e di
strib
utor
whe
re y
ou p
urch
ased
the
unit.
●Tu
rn o
ff th
e po
wer
, and
wai
t for
a w
hile
.
●R
epla
ce it
with
ano
ther
rec
orde
d di
sc.
●R
epla
ce it
with
ano
ther
rec
orda
ble
disc
.
●E
dit t
he tr
ack
with
the
devi
ce o
n w
hich
it w
as r
ecor
ded.
●R
epla
ce it
with
ano
ther
rec
orde
d di
sc.
●E
rase
all
of th
e si
gnal
err
ors,
and
then
try
reco
rdin
g ag
ain.
●A
dis
c w
hich
con
tain
s no
n-m
usic
dat
aca
nnot
be
play
ed.
●R
epla
ce it
with
ano
ther
rec
orde
d di
sc.
ER
RO
R M
ES
SA
GE
S
(
): E
rror
mes
sage
s se
en o
n th
e re
mot
e co
ntro
l.
Err
or
mes
sag
esR
emed
y
BA
TT
EM
PT
Y(L
o B
AT
T)
BL
AN
K D
ISC
(BL
AN
K)
Can
’t C
OP
Y(N
ot
RE
C)
Can
’t E
DIT
Can
’t R
EC
(No
t R
EC
)
Can
’t W
RIT
E
DE
FE
CT
(DE
FE
CT
)
Din
UN
LO
CK
(UN
LO
CK
)
RE
AD
ER
RO
R(E
-RE
AD
)
DIS
C F
UL
L
HO
LD
(HO
LD
)L
OC
KE
DL
OC
K E
RR
OR
NO
DIS
C
PB
DIS
C
PO
WE
R ?
SO
RR
Y(S
OR
RY
)
SY
ST
EM
ER
R(E
-SY
S)
TE
MP
OV
ER
(E-T
EM
P)
TOC
ER
RO
R(E
-TO
C)
TO
C F
UL
L
Tr. P
rote
ct
U T
OC
ER
RO
R(E
-UTO
C)
? D
ISC
(?D
ISC
)
Mea
nin
g
PR
OT
EC
TE
D
MD-MT20/20C/20W
– 8 –
OUICK GUIDE (MD-MT20 ONLY)3
Co
nn
ecti
on
/ C
on
exió
n
■ A
nal
og
rec
ord
ing
■ G
rab
ació
n a
nal
óg
ica
■ D
igit
al r
eco
rdin
g■
Gra
bac
ión
dig
ital
■ M
icro
ph
on
e■
Mic
rófo
no
MIC
IN PLU
G IN
POW
ER
Ste
reo
mic
roph
one
Mic
rófo
no e
stér
eo
Rec
ordi
ng s
ide
Lado
de
grab
ació
n
OP
TIC
AL/
LIN
E IN
• To
the
line
outp
ut ja
cks
on a
ste
reo
• A
los
ench
ufes
de
salid
a de
líne
a de
un
equi
po e
stér
eo
LR
(RIG
HT
)(D
ER
EC
HO
)
• A
nalo
g ca
ble
incl
uded
with
this
uni
t•
Cab
le a
naló
gico
sum
inis
trad
o co
n es
te
(LE
FT
)(I
ZQ
UIE
RD
O)
Pla
ybac
k si
deLa
do d
e re
prod
ucci
ón
Rec
ordi
ng s
ide
Lado
de
grab
ació
n
OP
TIC
AL/
LIN
E IN
•O
ptic
al d
igita
l cab
le(s
uppl
ied)
•C
able
ópt
ico
digi
tal
(sum
inis
trad
o)
Pla
ybac
k si
deLa
do d
e re
prod
ucci
ón
Rec
ordi
ng s
ide
Lado
de
grab
ació
n
DIG
ITA
L O
UT
AU
DIO
OU
T
12
43
5 5
1C
heck
the
supp
lied
acce
ssor
ies
/ Com
prue
be lo
s ac
ceso
rios
sum
inis
trad
os
2P
ow
er s
ou
rce
/ Alim
enta
ció
nPO
RTA
BL
E M
INID
ISC
RE
CO
RD
ER
Qu
ick
Gu
ide/
Gu
ía r
ápid
a M
D-M
T20
■ R
ech
arg
eab
le b
atte
ry p
ow
er■
Alim
enta
ció
n d
e la
bat
ería
rec
arg
able
• A
C 1
20V
, 60H
z•
120V
CA
, 60H
z
■ A
lkal
ine
bat
tery
po
wer
■ A
limen
taci
ón
de
la p
ila a
lcal
ina
■A
C p
ow
er■
Alim
enta
ció
n d
e C
A
•A
C 1
20V
, 60H
z•
120V
CA
, 60H
z
●C
arry
ing
Bag
x 1
●C
aja
para
el
tran
spor
te x
1●
Ana
log
Cab
le x
1●
Cab
le a
naló
gico
x 1
●O
ptic
al D
igita
l Cab
lex
1●
Cab
le ó
ptic
o di
gita
lx
1
●A
C A
dapt
or x
1●
Ada
ptad
or d
e C
A x
1●
Hea
dpho
nes
x 1
● A
uric
ular
es x
1
●R
emot
e C
ontr
ol U
nit
x 1
●C
ontr
olad
or r
emot
ox
1
●R
ech
arg
ea
ble
Nic
kel-
Met
al H
ydrid
e B
atte
ry x
1●
Bat
ería
rec
arga
ble
delit
io-io
n x
1
12
3
● B
atte
ry C
arry
ing
Cas
ex
1●
Caj
a po
rtab
ater
ías
x 1
MD-MT20/20C/20W
– 9 –
2
13
2 13
4
4 R
eco
rdin
g /
Gra
bac
ión
To t
urn
off
th
e p
ow
er:
Par
a d
esco
nec
tar
la a
limen
taci
ón
:
To r
emo
ve t
he
Min
iDis
c:P
ara
extr
aer
el m
inid
isco
:
Turn
off
th
e p
ow
er a
nd
mo
ve t
he
OP
EN
leve
r in
th
e d
i-re
ctio
n i
nd
icat
ed b
y th
e ar
row
.D
esco
nect
e la
alim
enta
ción
y m
ueva
la p
alan
ca O
PE
N e
n el
sent
ido
indi
cado
por
la fl
echa
.
Pre
ss t
he
EN
TE
R/S
YN
C b
utt
on
.
Pul
se e
l bot
ón E
NT
ER
/SY
NC
.
Beg
in p
layb
ack
on
th
e so
urc
e eq
uip
men
t.
Inic
ie la
rep
rodu
cció
n en
el e
quip
o fu
ente
.
Pre
ss t
he
RE
C b
utt
on
.
Pul
se e
l bot
ón R
EC
.
Wh
en a
so
un
d,
such
as
a p
erso
n s
pea
kin
g,
isp
icke
d u
p b
y th
e m
icro
ph
on
e, r
eco
rdin
g w
ill b
e-g
in a
uto
mat
ical
ly.
Co
nn
ect t
he
ster
eo m
icro
ph
on
e to
the
MIC
IN ja
ck.
Inse
rt a
rec
ord
able
Min
iDis
c.
Inse
rte
un m
inid
isco
gra
babl
e.
■ R
eco
rdin
g f
rom
CD
s o
r M
Ds
(Syn
chro
rec
ord
ing
)■
Gra
bac
ión
de
dis
cos
com
pac
tos
o m
inid
isco
s (G
rab
ació
n s
incr
on
izad
a)
■ R
eco
rdin
g f
rom
th
e m
icro
ph
on
e (M
ic s
ynch
ro r
eco
rdin
g)
■ G
rab
ació
n d
e u
n m
icró
fon
o (
Gra
bac
ión
sin
cro
niz
ada
con
mic
rófo
no
)
Pre
ss th
e E
NT
ER
/SY
NC
bu
tto
n to
sel
ect t
he
syn
-ch
ro r
eco
rdin
g le
vel.
(Th
is le
vel c
an b
e ch
ang
ed,
even
wh
ile r
eco
rdin
g.)
Pre
ss t
he
■/:
OF
F b
utt
on
wh
ile in
th
e st
op
mo
de.
Pul
se e
l bot
ón ■
/:OF
F e
stan
do e
n el
mod
o de
par
ada.
Co
nn
ect
the
exte
rnal
eq
uip
men
t.
Con
ecte
el e
quip
o ex
tern
o.1
Inse
rt a
rec
ord
able
Min
iDis
c.
Inse
rte
un m
inid
isco
gra
babl
e.2
Pre
ss t
he
RE
C b
utt
on
.
Pul
se e
l bot
ón R
EC
.3 4 5 6
1 2 3 4 5
6 Pre
ss t
he
■/:
OF
F b
utt
on
.P
ulse
el b
otón
■/:O
FF.
To s
top
rec
ord
ing
:P
ara
det
ener
la g
rab
ació
n:
Mie
ntra
s se
pro
duce
el s
onid
o de
l equ
ipo
exte
rno
cone
ctad
o a
este
apa
rato
, pul
se e
l bot
ón
o p
ara
ajus
tar
el n
ivel
de
grab
ació
n.
Con
ecte
el m
icró
fono
est
éreo
al e
nchu
fe M
IC IN
del
apar
ato
prin
cipa
l.
Pul
se e
l bot
ón
o p
ara
ajus
tar
el n
ivel
de g
raba
ción
.
Pre
ss t
he
o
r
bu
tto
n t
o a
dju
st t
he
reco
rdin
g le
vel.
Pul
se e
l bo
tón
EN
TE
R/S
YN
C p
ara
sele
ccio
nar
elni
vel d
e la
gra
baci
ón s
incr
oniz
ada.
(Est
e ni
vel p
odrá
cam
biar
se in
clus
o du
rant
e la
gra
baci
ón.)
Cua
ndo
el m
icró
fono
cap
te u
n ru
ido,
el d
e un
a pe
r-so
na q
ue h
able
por
eje
mpl
o, la
gra
baci
ón e
mpe
zará
auto
mát
icam
ente
.
Wh
ile
pla
yin
g s
ou
nd
fro
m t
he
ex
tern
al
equ
ipm
ent c
on
nec
ted
to th
is u
nit
, pre
ss th
e o
r
bu
tto
n t
o a
dju
st t
he
reco
rdin
gle
vel.
5P
layi
ng
a M
iniD
isc
/ Rep
rod
ucc
ión
de
un
min
idis
co
2 13
4
Inse
rt t
he
hea
dp
ho
nes
plu
g f
irm
ly i
nto
th
eh
ead
ph
on
es ja
ck o
n th
e re
mo
te c
on
tro
l un
it.1
Plu
g th
e re
mot
e co
ntro
l uni
t int
o th
e ja
ck o
nth
e m
ain
unit.
Pus
h th
e pl
ug a
ll th
e w
ay in
.2 ●
The
pow
er w
ill b
e tu
rned
on
auto
mat
ical
ly, a
nd p
lay-
back
will
sta
rt fr
om th
e fir
st tr
ack.
(
Aut
o-pl
ay fu
nctio
n)●
La a
limen
taci
ón s
e co
nect
ará
auto
mát
icam
ente
, y l
are
prod
ucci
ón e
mpe
zará
des
de l
a pr
imer
a pi
sta.
(Fun
ción
de
repr
oduc
ción
aut
omát
ica)
To in
terr
up
t p
layb
ack:
Par
a in
terr
um
pir
la r
epro
du
cció
n:
Pre
ss th
e b
utto
n du
ring
play
back
.●
To
resu
me
play
back
, pre
ss th
e b
utto
n ag
ain.
Pul
se e
l bot
ón
dur
ante
la r
epro
ducc
ión.
●P
ara
rean
udar
la r
epro
ducc
ión,
pul
se d
e nu
evo
el b
otón
To t
urn
off
th
e p
ow
er:
Par
a d
esco
nec
tar
la a
limen
taci
ón
:
Pre
ss th
e b
utto
n.In
the
follo
win
g ca
ses,
the
auto
-pla
y fu
nctio
n w
ill n
ot w
ork.
● W
hen
the
reco
rdab
le M
iniD
isc
writ
e pr
otec
tion
tab
is c
lose
d●
Whe
n th
e au
to-p
lay
func
tion
has
been
can
cele
d
Pla
ybac
k d
oes
no
t sta
rt w
hen
a M
iniD
isc
is in
sert
ed: L
are
pro
du
cc
ión
no
em
pie
za c
ua
nd
o s
e i
ns
ert
a u
nm
inid
isco
:
6S
ou
nd
co
ntr
ol /
Co
ntr
ol d
el s
on
ido
Ad
just
th
e b
ass
leve
l.E
ach
time
the
BA
SS
but
ton
is p
ress
ed,
the
tone
will
be
switc
hed
as fo
llow
s:
• V
olum
e (0
- 3
0)•
Vol
umen
(0
- 30
)
To s
top
pla
ybac
k:P
ara
det
ener
la r
epro
du
cció
n:
Pre
ss th
e ■
/:OF
F b
utto
n.P
ulse
el b
otón
■ /:
OF
F.
Pre
ss th
e ■
/:OF
F b
utto
n w
hile
in th
e st
op m
ode.
Pul
se e
l bot
ón ■
/:O
FF
est
ando
en
el m
odo
de p
arad
a.
3 Ad
just
th
e vo
lum
e.P
ress
the
+ b
utto
n to
inc
reas
e th
e vo
lum
e an
d th
e –
butto
n to
dec
reas
e th
e vo
lum
e.
Aju
ste
el v
olu
men
.P
ulse
el b
otón
+ p
ara
aum
enta
r el v
olum
en y
el b
otón
–pa
ra r
educ
irlo.
BA
SS
1--
----
-Bas
s so
unds
are
em
phas
ized
slig
htly.
BA
SS
2--
----
-Bas
s so
unds
are
em
phas
ized
mor
e.
BA
SS
3--
----
-Bas
s so
unds
are
em
phas
ized
eve
n m
ore.
BA
SS
OF
F--
--B
ass
emph
asiz
is c
ance
led.
BA
SS
1--
----
-Los
son
idos
gra
ves
se r
ealz
an li
gera
men
te.
BA
SS
2--
----
-Los
son
idos
gra
ves
se r
ealz
an m
ás.
BA
SS
3--
----
-Los
son
idos
gra
ves
se r
ealz
an a
ún m
ás.
BA
SS
OF
F--
--E
l rea
lce
de lo
s gr
aves
se
canc
ela.
Inse
rte
firm
emen
te la
cla
vija
de
los
auric
ular
esen
el
ench
ufe
de a
uric
ular
es d
el c
ontr
olad
orre
mot
o.
Enc
hufe
el c
ontr
olad
or r
emot
o en
el e
nchu
fe
del
apar
ato
prin
cipa
l. E
mpu
je c
ompl
etam
ente
haci
a ad
entr
o la
cla
vija
.
Pul
se e
l bot
ón
.E
n lo
s ca
sos
sigu
ient
es, l
a fu
nció
n de
repr
oduc
ción
aut
omát
ica
no s
e ac
tivar
á.●
Cua
ndo
esté
cer
rada
la
leng
üeta
de
prot
ecci
ón c
ontr
aes
critu
ra d
el m
inid
isco
gra
babl
e●
Cua
ndo
haya
sid
o ca
ncel
ada
la fu
nció
n de
rep
rodu
cció
nau
tom
átic
a
Aju
ste
el n
ivel
de
los
gra
ves.
Cad
a ve
z qu
e pu
lse
el b
otón
BA
SS
, el t
ono
cam
biar
á de
lafo
rma
sigu
ient
e:
Inse
rt a
Min
iDis
c.
Inse
rte
un m
inid
isco
.
MD-MT20/20C/20W
– 10 –
1 Bottom Cabinet 1. Screw ..................... (A1) x7 10-1
2 Top Cabinet 1. Open the Top cabinet. 10-12. Screw ..................... (B1) x43. Screw ..................... (B2) x1
3 Key Switch/LCD 1. Flexible PWB ......... (C1) x2 10-2
4 Mechanism Unit 1. Flexible PWB ......... (D1) x2 10-22. Raise the rear part, and ..... 10-3 remove in the arrow direction.
5 Main PWB 1. Flat cable ................ (E1) x1 10-22. Screw ..................... (E2) x2
6 Audio PWB 1. Screw ...................... (F1) x3 10-4
DISASSEMBLY
Cares before disassemblingWhen assembling the machine after disassembling orrepair, observe the following requirements so as to ensuresafety and performance.1. Remove the batteries from the machine, and take out the
mini-disc.2. When assembling after repair, be sure to restore the
initial location of wires.Since the screws are small, incorrect fixing may result inmalfunction.
3. When repairing, pay utmost attention to static electricityof IC.
REMOVAL PROCEDURESTEP FIGURE
Figu re 10-1
Figure 10-2
Figure 10-3
Caution:Carefully handle the main PWB and flexible PWB. After removing theflexible PWB (1*) for the optical pickup from the connector, do nottouch directly the front end of flexible PWB with your hand so as toprevent damage of optical pickup by static electricity.
Mechanism Unit
Figure 10-4
Open Lever
BottomCabinet
LCDKey Switch
Top Cabinet
(A1)x2ø1.4x2mm(A1)x2
ø1.4x2mm
(A1)x2ø1.4x2mm
(A1)x1ø1.4x2mm
(B1)x2ø1.4x2mm
(B2)x1ø1.4x2mm
(B1)x2ø1.4x2mm
OpenOpen
(C2)x2
pullpull
pull
pull
pull
pullpull
pull
LCD
(D1)x1
MainPWB
(E2)x2ø1.7x2.5mm
AudioPWB
MechanismUnit(E1)x1
Key Switch
Put the fold on the connector, and apply with the felt. Sagging may result in contact with the sheet metal.
Felt
(D1)x1*Flexible PWB for optical pickup
(F1)x3ø1.7x2.5mm
Audio PWB
MD-MT20/20C/20W
– 11 –
REMOVING AND REINSTALLING THE MAIN PARTSRemove the mechanism according to the disassembling meth-ods 1 to 4. (See Page 10.)
How to remove the spindle motor (See Fig. 11-1.)1. Remove the solder joint (A1) x 1 of flexible PWB.2. Remove the screws (A2) x 3 pcs., and remove the spindle
motor.
Figure 11-5
Figure 11-1
Figure 11-2
Figure 11-3How to reinstall the optical pickup unit(See Fig. 11-5.)1. Remove the screw (E1) x 1 pc.2. Slowly raise the optical pickup.
How to remove the magnetic head (See Fig. 11-4.)1. Remove the screws (D1) x4 which connects the magnetic
head to the head relay flexible PWB, remove the springwashers (D2) x 2 and remove the soldering joints (D3) x 2.
Note:Mount carefully so as not to damage the magnetic head.(If the gear is damaged, noise is caused.)
Figure 11-4
How to remove the head up/down motor(See Fig. 11-2.)1. Remove the solder joints (B1) x 2 of head up/down motor
lead wire.2. Remove the screw (B2) x 1 pc., and remove the flexible
PWB.3. Remove the screw (B3) x 1 pc., and remove the head up/
down motor.Note:Take care so that the motor gear is not damaged.(If the gear is damaged, noise is caused.)
How to remove the sled motor (See Fig. 11-3.)1. Remove the stop washer (C1) x 1 pc., and remove the drive
gear (C2) x 1 pc.2. Remove the screws (C3) x 2 pcs., and remove the sled
motor.3. Remove the solder joints (C4) x 2 of flexible PWB.Note:Take care so that the motor gear is not damaged.(If the gear is damaged, noise is caused.)
(A2)x3ø1.4x2.8mm
MD Mechanism
Spindle Motor(A1)x1Mechanism Flexible PWB Solder joint
(C1)x1Stop Washer
MD Mechanism
Sled Motor
(C3)x2ø1.4x1.2mm
(C2)x1Drive Gear
(C4)x2Mechanism Flexible PWB Solder Joint
(D3)x2Solder joint(D1)x1
ø1.4x1.5mm(D1)x1ø1.2x1.6mm
(D1)x2ø1.4x2.2mm
Magnetic Head
MD Mechanism
(D2)x2Spring Washer
(E1)x1ø1.7x3mm
Guide Shaft
OpticalPickup Unit
MD Mechanism
Thrust Plate Spring
(B2)x1ø1.4x1.5mm
(B3)x1ø1.4x5.5mm
MD Mechanism
Remove thesolder joint(B1)x2
Head Up/DownMotor
MD-MT20/20C/20W
– 12 –
Entering the TEST mode1. Setting at port (power nonconnected state)
(1) Set the port as follows. TEST1 : "Low" (TP416) TEST0 : "High"(2) Turn the Power ON.(3) Test Mode STOP [ T E S T _ ]
2. Setting by special button operation (in standby state)(1) Holding down the DISP button and ENTER button, press the PLAY button.(2) Normal mode setting initialization (BASS setting, VOL setting, etc.)*Since the unit is changed to the setting for production line inspection , be sure to set it to the default setting state in the following default setting procedure before returning it to the user.(3) Indication of microcomputer version for one second [ 3 1 8 A f X ]
(4) Whole LCD lighting for 2 seconds(5) Test Mode STOP [ T E S T _ ]*When the PLAY button is pressed during indication (3) and (4), the process proceeds to (5).
1 High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110
2 Low reflection disc MMD-212 (TEAC Test MD) 74-minute disc 88GMMD-212
3 Low reflection disc MMD-213A (TEAC Test MD) 80-minute disc 88GMMD-213A
4 Low reflection disc Recording minidisc UDSKM0001AFZZ
ADJUSTMENT Test discMD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (highreflection disc).
Type Test disc Parts No.
Note: Use the low reflection disc on which music has been recorded.
EEPROM version
Destination
Leaving the TEST mode(1) Press the STOP button in the TEST mode stop state or version indicating state or whole LCD lighting state.
Test Mode
Microcomputer version
Shipping setting methodHolding down simultaneously the VOLUME-DOWN Button and PLAY Button of the set unit without disc, supply the power from the DC IN plug.After the indication "INIT" -> "BYE OK" disappears, release the power supply of DC IN.
1. AUTO 1 Mode • Perform preliminary automatic adjustment.• If the combination of mechanism and pickup PWB has been changed, be sure to start from
AUTO1.2. AUTO 2 Mode • Perform ATT (attenuator) automatic adjustment.
• Perform continuous playback (error rate display, jump test)
3. TEST-PLAY Mode • Continuous playback from the specified address is performed.• 1 line, 10 lines or 384 lines manual jump is
performed.• C1 error rate display (pit section), ADIP error
rate display (groove section)• The temperature correction is performed only when
servo start is performed, but the posture correctionis not performed during continuous playback.
4. TEST-REC Mode • Continuous record from the specified addressis performed.
• Change of record laser output(servo gain is alsochanged according to laser output).
• The temperature correction is performed onlywhen servo start is performed, but the posturecorrection is not performed during continuousrecording.
5. MANUAL 1 Mode • Temperature is displayed. (Updating in real time)• Seeing the displayed adjustment value, perform preliminary manual adjustment. (Error rate indication, jump test)
6. MANUAL 2 Mode • Temperature is displayed. (Updating in real time)• Seeing the displayed adjustment value perform
manfully the preliminary adjustment. (Error rate indication, jump test)• Continuous playback is performed (error rate display, jump test).
7. RESULT 1 Mode • The value adjusted in AUTO1 or MANUAL1 is indicated.• (Execution in servo "OFF" state").
8. RESULT 2 Mode • The value adjusted in AUTO 2 or MANUAL 2 is indicated.• Adjustment value is changed manually. (error rate display, jump test).
9. DIGITAL INPUT Mode • Digital input information is displayed.10. ERROR INFORMATION • Error information is displayed. Mode • Error information is initialized11. NORMAL Mode • The mode is changed from the TEST mode to
the normal mode without adjustment.• In the normal mode the internal operation mode,
memory capacity, etc. areindicated.• In the normal mode both temperature correction
and posture correction are perfomed.12. EEPROM Mode • Factors of digital servo are changed manually.
(Each servo is turned on individually.)• Cut-off frequency of BASS1, BASS2 and BASS3
is selected manually.• Temperature detection terminal voltage is
measured, and the reference value is set.• Defaults are selected and set.• Setting of EEPROM protect area is updated.
(In case of protect releasing)13. INNER Mode • Determine the position where the INNER switch
is turned on. (only high reflection disc).• The temperature correction is performed only
when servo start is performed, but the posturecorrection is not performed.
MD-MT20/20C/20W
– 13 –
Operation in each TEST mode1. AUTO1 Mode• When the STOP button is pressed while the AUTO1 menu appears or during automatic adjustment, the mode changes to the TEST mode
stop state. At this time the adjustment value is not output.• Be sure to adjust, using the specified disc MMD-213A or MMD-212. At this time release the EEPROM (IC402) protection. (Refer to EEPROM write procedure.)• Adjustment NG; Adjustment item out of range, focus ON failure, and adjustment error• When the PLAY button is pressed while ADJ. OK is displayed, AUTO2 is executed.
2. AUTO2 Mode• When the STOP button is pressed while the AUTO2 menu appears or during automatic adjustment, the mode changes to the TEST mode
stop state. At this time the adjustment value is not output.• Adjustment NG; Adjustment item out of range, and adjustment error.• When the PLAY button is pressed while ADJ. OK is displayed,TEST_PLAY is executed.
3. TEST-PLAY Mode• When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode
changes to the TEST mode stop state.• When the PLAY button is pressed while the TEST-PLAY menu appears,continuous playback is initiated from the current pickup position.• Whenever the DISP button is pressed in the TEST-PLAY menu, the target address changes as follows.
0032 — 03C0 — 0700 — 08A0 — 0950— 0032 —When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address.
• Each time the MODE button is pressed while the TEST-PLAY mode target address is displayed, the digit which is changed by pressing theSKIP UP/DOWN button is changed as follows.
0032 — 0032 — 0032 — 0032 —• When the SKIP UP button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE
button is set to +1h. (0 to F)• When the SKIP DOWN button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE
button is set to -1h. (0 to F)* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.
• When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows.1 — 10 — 384 — 1
* After the number of jump lines is indicated for one second, the address indication is restored. [ T R _ ]
• When the SKIP UP button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction.• When the SKIP DOWN button is pressed in the continuous playback mode, the specified number of lines is jumped in the REV direction.
* When the SKIP UP/DOWN button is held down, jump is repeated every approx. 100 ms.•Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows.
* Pre-mastered discContinuous playback (SUBQ address indication) [ S Q ]
|Continuous playback (C1 error indication) [ C E ]
|Continuous playback (SUBQ address indication) [ S Q ]
* Recordabl diskContinuous playback (ADIP address indication) [ A P ]
|Continuous playback (C1 error indication) [ C E ]
|Continuous playback (ADIP error indication) [ A E ]
|Continuous playback (ADIP address indication) [ A P ]
4. TEST-REC Mode• When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode
changes to the TEST mode stop state.• When the PLAY button is pressed while the TEST-REC menu appears, the continuous record is initiated from the current pickup position.• Whenever the DISP button is pressed in the TEST-REC menu, the target address changes as follows.
0032 — 03C0 — 0700 — 08A0 —0950 — 0032 —When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address. • Whenever the MODE button is pressed in the TEST-REC mode target address is displayed, the digit which is changed by the SKIP UP/
DOWN button changes as follows.0032 — 0032 — 0032 — 0320 —
• When the SKIP UP button s pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASS buttonis set to +1h.(0 to F)
• When the SKIP DOWN button is pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASSbutton is set to -1h. (0 to F)
* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.
MD-MT20/20C/20W
– 14 –
5. NORMAL Mode• When the STOP button is pressed while the NORMAL menu appears, the mode changes to the TEST mode stop state.• Indication during operation
Indication of memory capacity on main unit LCD [ ] + Level meter: Internal mode: Address (Cluster section): Address (Sector section)
• Selection of sound volume, BASS, etc. is possible (without indication)• Recording is also possible.• If the STOP button is pressed during operation in the NORMAL mode, the NORMAL mode is canceled, and the power is turned off.
6. Error data display Mode• Reversing when SKIP DOWN button is pressed• When the STOP button is pressed while the error data indication menu appears or during error data indication, the mode changes to the
TEST mode stop state.• Error data 0 is the latest error.• Error which occurred in the TEST mode is also stored in the memory.• When the DISP button is pressed while the error data indication menu appears, the error data is initialized. [ C L E A R _ ]• : Error Code
Explanation of error history code12h : RF side FG, TG, and TCRS adjustment termination failure13h : Adjustment servo retraction excessive retrial16h : C. IN detection time-over17h : A, B, E, F, and TCRSO offset measurement value out of
tolerable range21h : Focus retraction completion allowable time-over23h : Track search completion allowable time-over24h : Disc linear speed measurement failure32h : P-TOC read failure42h : U-TOC read failure44h : U-TOC write data write disabled/read check error52h : SD write data write disabled71h : Pickup position initialization time-over72h : EEPROM data read check sum error73h : Record head drive disabled (by EJECT lever)82h : Power overvoltage detection91h : Ambient temperature is higher that the allowable tempera-
ture.
7. INNER Mode• when the STOP button is pressed on the INNER menu (SQ______ ), the state is changed to the TEST mode STOP state.• : Address
MD-MT20/20C/20W
– 15 –
EEPROM (IC402) writing procedure1. Procedure to replace EEPROM and write initial value of microcomputer in EEPROM
(1) Replace EEPROM.(2) Deprive EEPROM of protection (connect the pins 8 and 6 of IC402).(3) Refer to the latest EEPROM data list.(4) Press the Display button, Ente button and Play button to start the test mode.(5) Version display
[ V e r . ]
EEPROM version (f ~ Z)Microcomputer ROM version
(6) The whole LCD lights.(7) Test mode stop state.
[ T E S T ](8) Press the "BASS" button, and press twice the "SKIP DOWN" button.
[ E E P R O M ](9) Perform the operation to display "EEPROM SETTING MODE CHART", compare the EEPROM DATA LIST with the display,
and set according to the EEPROM DATA LIST with the VOL UP or VOL DOWN key. (10) Set the temperature reference. (Refer to the Temperature Reference Setting Method.) (11) Set according to the EEPROM DATA LIST. (12) Press the Stop button.
[ T E S T ] (13) Press the Stop button. (14) After data is written in EEPROM, turn off power . (15) Restore protection of EEPROM (Disconnect connection made in Step (2) above).
2. Temperature reference setting method[1] Measurement, calculation and setting procedure
(1) Set the TEST mode. • Set TEST 1, 0 = '01', and turn on power (or set PLAY ON in standby state).(2) Start the EEPROM mode 'Temp' menu. • Key operation in order of BASS, SKIP-DOWN x 2 times, PLAY, PLAY in the test mode STOP state. • 'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference)(3) Once press SKIP-UP, and determine the displayed microcomputer TEMP input AD value. • 'TPin##' is displayed. (## = TEMP input AD value)(4) At the ambient temperature, determine the temperature corrected value from the temperature measurement value
correction table.(5) Determine the temperature reference, using the following formula. • Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value(6) Set the temperature reference value by button operation , and check whether the temperature code indication corresponds to "Temperature
Code Identification Table".
[2] Temperature measurement value correction table
Ambienttemperature
Temperaturecorrection
+ 9oC ~ +11oC - 05h + 10.0oC
+12oC ~ +14oC - 04h + 12.7oC
+15oC ~ +16oC - 03h + 15.4oC
+17oC ~ +19oC - 02h + 18.2oC
+20oC ~ +22oC - 01h + 20.9oC
+23oC ~ +24oC ± 00h + 23.6oC
+25oC ~ +27oC + 01h + 26.3oC
+28oC ~ +30oC + 02h + 29.0oC
+31oC ~ +33oC + 03h + 31.8oC
Centertemperature
Ambienttemperature
Temperaturecorrection
Centertemperature
- 9oC ~ +10oC 08h + 0.5oC
+ 3oC ~ +21oC 07h + 12.5oC
+15oC ~ +33oC 06h + 23.6oC
+26oC ~ +43oC 05h + 35.0oC
X
MD-MT20/20C/20W
– 16 –
EEPROM DATA LIST (EEPROM version f)TEMP setting
Item display Set valuesT M _ _ Calculate values
ADJ. SET settingItem display Set values
C O K _ A 0 H
F A T _ C 0 H
T A T _ 3 E H
C A T _ 2 0 H
F A B _ E 0 H
BASS settingItem display Set values
B S 1 _ 3 F H
B S 2 _ 1 F H
B S 3 _ E 2 H
Sled settingItem display Set values
S L G _ D F H
S L 2 _ 2 0 H
S L M _ 7 F H
S L V _ D 7 H
S K k _ 7 2 H
S K t _ 7 0 H
S K m _ 7 8 H
W T m _ 2 4 H
M V 1 _ 4 F H
M V 2 _ A A H
S R V _ 0 A H
EQ. SET settingItem display Set values
H Q 1 _ 9 0 H
H Q 2 _ 9 0 H
H S G _ 1 1 H
H S O _ F D H
L Q 1 _ 9 0 H
L Q 2 _ 9 0 H
L S G _ 1 1 H
L S O _ 0 0 H
G Q 1 _ 9 8 H
G Q 2 _ 8 4 H
G S G _ 1 1 H
F L p _ 0 8 H
Control settingItem display Set values
C T 0 _ 0 5 H
C T 1 _ 1 1 H
C T 2 _ 7 F H
C T 3 _ 3 0 H
R C 0 _ C 0 H
R C 1 _ F E H
S Y C _ A 6 H
P W L _ 0 3 H
D R 1 _ 9 2 H
D R 2 _ C 8 H
I N 1 _ D 3 H
I N 2 _ 6 4 H
I N 3 _ D 2 H
I N H _ 6 4 H
D R H _ C 8 H
P L E _ 1 B H
R C E _ 4 2 H
E L T _ 7 6 H
S L T _ 4 3 H
S P M _ 0 0 H
M S L _ 0 0 H
U S 0 _ 0 0 H
U S 1 _ 0 0 H
U S 2 _ 0 0 H
Item display Set values
F G _ _ B 0 H
F F 1 _ 7 0 H
F F 2 _ E 8 H
F Z H _ E D H
F L n _ 0 A H
D J G _ 1 4 H
F L V _ 3 3 H
W T f _ 2 0 H
F S S _ E 9 H
Fucus setting
Tracking settingItem display Set values
T G _ _ 4 8 H
T F 1 _ 7 0 H
T F 2 _ E 0 H
T F S _ 0 0 H
T B o _ 4 4 H
T B t _ 2 0 H
T K o _ 4 4 H
T K t _ 1 D H
T D o _ 6 7 H
T D t _ 3 4 H
T G R _ 0 0 H
S C t _ 4 0 H
S C m _ 5 3 H
C L p _ 1 8 H
C L r _ 2 8 H
J P I _ 0 1 H
K 1 0 _ 6 5 H
Item display Set values
S P G _ 1 4 H
S P i _ E 0 H
S P m _ A 0 H
S P o _ 6 8 H
S P 1 _ 1 0 H
S P 2 _ 6 0 H
S P 3 _ F 2 H
S P 4 _ F 2 H
S P 5 _ 1 0 H
S P D _ 7 F H
S P K _ E B H
Spindle setting
MD-MT20/20C/20W
– 17 –
: Tes
t Mod
e S
TO
P
: Pre
-aut
o ad
just
men
t men
u
: AT
T a
uto
adju
stm
ent m
enu
: Con
tinuo
us r
ecor
d m
enu
: EE
PR
OM
set
ting
men
u
: IN
NE
R s
witc
h po
sitio
n m
easu
rem
ent m
enu
BA
SS
T E
S T
Slid
e ex
tern
alpe
riphe
ry m
ove
Slid
e in
tern
al
perip
hery
mov
e
Tse
t Mod
e M
enu
Tes
t Mod
e C
hang
e C
hart
A U
T O
1
A U
T O
2SK
IP U
PSK
IP D
OWN
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
T
R E
C
SKIP
UP
SKIP
DOW
N
: Con
tinuo
us p
layb
ack
men
u
T
P L
A Y
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
: Dig
ital i
nput
sig
nal m
onito
r m
enu
D i
n M
o n
SKIP
UP
SKIP
DOW
N
E E
P R
O M
SKIP
UP
SKIP
DOW
N
I N N
E R
SK
IP U
P
SKIP
UP
SKIP
DOW
N
SKIP
DOW
NSK
IP U
P
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [P
LAY
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
men
u, th
e op
erat
ion
of th
is m
enu
is e
xecu
ted.
: Pre
-adj
ustm
ent v
alue
che
ck m
enu
R S
L T
1
: AT
T a
djus
tmen
t val
ue c
heck
men
u
R S
L T
2
: Pre
-man
ual a
djus
tmen
t men
u
M A
N U
1
: AT
T m
anua
l adj
ustm
ent m
enu
M A
N U
2
: Err
or h
isto
ry d
ispl
ay m
enu
E
D A
T A
: Tes
t mod
e no
rmal
pla
ybac
k m
enu
N O
R M
A L
: Pre
auto
mat
ic A
djus
tmen
t men
u
: Pre
adju
stm
ent e
rror
(ad
just
men
t val
ue o
utpu
t)
: Dur
ing
prea
djus
tmen
t adj
ustm
ent
Adj
ustm
ent e
rror
Nor
mal
end
: Pre
adju
stm
ent n
orm
al e
nd (
adju
stm
ent v
alue
out
put)
: Dur
ing
AT
T a
utom
atic
adj
ustm
ent
PLA
Y
PLA
Y
A U
T O
1
Pre
auto
mat
ic A
djus
tmen
t
A D
J .
O K
A D
J .
N G
A T
2
A T
1
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
"
"
repr
esen
t the
adj
ustm
ent n
umbe
r as
follo
ws.
0 0
: Inn
erm
ost p
erip
hery
mov
e0
2 : A
BE
F o
ffset
tent
ativ
e m
easu
rem
ent
0 4
: RF
sid
e fo
cus
gain
coa
rse
adju
stm
ent
0 5
: Foc
us A
TT
tent
ativ
e se
tting
0 6
: RF
sid
e bi
t sec
tion
trac
king
gai
n ad
just
men
t0
7 : C
OU
T le
vel s
ettin
g fo
r pi
t sec
tion
adju
stm
ent
0 8
: Ext
erna
l per
iphe
ry m
ove
0 9
: RF
sid
e gr
oove
sec
tion
trac
king
gai
n ad
just
men
t1
0 : C
OU
T le
vel s
ettin
g fo
r gr
oove
sec
tion
adju
stm
ent
1 1
: RF
sid
e T
CR
S g
ain
adju
stm
ent
1 2
: Tra
ckin
g A
TT
initi
al s
ettin
g1
3 : R
F s
ide
focu
s ga
in m
inor
adj
ustm
ent
1 4
: Foc
us A
TT
initi
al s
ettin
g1
5 : S
gai
n "H
igh"
AB
EF
offs
et m
easu
rem
ent
1 6
: TC
RS
offs
et m
easu
rem
ent
1 7
: S g
ain
"Low
" A
BE
F o
ffset
mea
sure
men
t
MD-MT20/20C/20W
– 18 –
: AT
T A
utoa
djus
tmen
t men
u
: AT
T a
djus
tmen
t err
or (
adju
stm
ent v
alue
out
put)
: Dur
ing
AT
T a
utoa
djus
tmen
t
Adj
ustm
ent e
rror
Nor
mal
end
: AT
T a
djus
tmen
t nor
mal
end
(ad
just
men
t val
ue o
utpu
t)
: Con
tinuo
us p
layb
ack
(hig
h re
flect
ion)
: Con
tinuo
us p
layb
ack
(low
ref
lect
ion)
PLA
Y
PLA
Y
A U
T O
2
AT
T A
uto
Adj
ustm
ent
A D
J .
O K
A D
J .
N G
S Q
# #
# #
A P
# #
# #
A T
2
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
"
" r
epre
sent
the
adju
stm
ent n
umbe
r as
follo
ws.
0 0
: Inn
erm
ost p
erip
hery
mov
e0
3 : P
it se
ctio
n tr
acki
ng A
TT
set
ting
0 4
: Pit
sect
ion
focu
s A
TT
set
ting
0 6
: Ext
erna
l per
iphe
ry m
ove
(low
ref
lect
ion
only
)0
7 : T
CR
S A
TT
set
ting
(low
ref
lect
ion
only
)0
8 : G
roov
e se
ctio
n tr
acki
ng A
TT
set
ting
(low
ref
lect
ion
only
)0
9 : G
roov
e se
ctio
n fo
cus
AT
T s
ettin
g(lo
w r
efle
ctio
n on
ly)
: Con
tinuo
us p
layb
ack
men
u
: Con
tinuo
us p
layb
ack
(pit
sect
ion)
: Con
tinuo
us p
layb
ack
(gro
ove
sect
ion)
# #
# #
: Add
ress
: Con
tinuo
us p
layb
ack
(pit
sect
ion)
: Con
tinuo
us p
layb
ack
(gro
ove
sect
ion)
# #
# #
: Add
ress
PLA
Y
T
P
L A
Y
Con
tinuo
us P
layb
ack
S Q
# #
# #
A P
# #
# #
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
In th
e st
art a
ddre
ss s
et s
tate
the
star
t add
ress
cha
nges
as
follo
ws
whe
n th
e [D
ISP
] but
ton
is p
ress
ed.
0 0
3 2
H (
initi
al v
alue
)0
3 C
0 H
0 7
0 0
H0
8 A
0 H
A d
0 0
3 2
A d
0 3
C 0
DISP
DISP
A d
0 7
0 0
DISP
DISP
A d
0 8
A 0
* In
the
star
t add
ress
set
ting
stat
e th
e st
art a
ddre
ss c
hang
e di
git c
hang
es w
hen
the
[BA
SS
] but
ton
is p
ress
ed.
1st
dig
it (in
itial
val
ue)
2nd
digi
t3r
d di
git
A d
0 0
3 2
A d
0 0
3 2
MO
DE
MO
DE
A d
0 0
3 2
MO
DE
* In
the
cont
inuo
us p
layb
ack
stat
e th
e nu
mbe
r of
jum
p lin
es c
hang
es a
s fo
llow
s sh
own
the
[BA
SS
] but
ton
is p
ress
ed.
1 (in
itial
val
ue)
1038
4
1 T
R
1 0
T R
BASS
BASS
3 8
4 T
RBA
SS
• C
ontin
uous
pla
ybac
k fr
om c
urre
nt p
icku
p po
sitio
n
: Con
tinuo
us p
layb
ack
men
u
: Sta
rt a
ddre
ss s
ettin
g
DIS
P
T
P
L A
Y
A d
0 0
3 2
PLA
Y
S Q
# #
# #
A P
# #
# #
• C
ontin
uous
pla
ybac
k fr
om a
ny a
ddre
ss
* In
the
star
t add
ress
set
sta
te th
e va
lue
of s
elec
tion
digi
t cha
nges
in th
e ra
nge
of "
0h to
Fh"
w
hen
the
[SK
IP U
P/D
OW
N] b
utto
n is
pre
ssed
* W
hen
the
[SK
IP U
P] b
utto
n is
pre
ssed
in th
e co
ntin
ued
play
back
mod
e, ju
mp
of s
peci
fied
num
ber
of li
nes
occu
rs in
the
exte
rnal
per
iphe
ry d
irect
ion.
If t
he k
ey is
hel
d do
wn
jum
p oc
curs
con
tinuo
usly
(10
0 m
s cy
cle)
.*
Whe
n th
e [S
KIP
DO
WN
] but
ton
is p
ress
ed in
the
cont
inuo
us p
layb
ack
mod
e, ju
mp
of s
peci
fied
num
ber
of li
nes
occu
rs in
the
inte
rnal
per
iphe
ry d
irect
ion.
If t
he k
ey is
hel
d do
wn,
jum
p oc
curs
con
tinuo
usly
(10
0 m
s cy
cle)
. A d
1 9
5 0
H
0 9
5 0
H
MD-MT20/20C/20W
– 19 –
: Con
tinuo
us r
ecor
d m
enu
PLA
Y
T
R E
C
Con
tinuo
us R
reco
rd
A P
# #
# #
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
In th
e st
art a
ddre
ss s
et s
tate
the
star
t add
ress
cha
nges
as
follo
ws
whe
n th
e [D
ISP
] but
ton
is p
ress
ed.
• C
ontin
uous
rec
ord
from
the
curr
ent p
icku
p po
sitio
n
: Con
tinuo
us r
ecor
d m
enu
: Sta
rt a
ddre
ss s
ettin
g
: Con
tinuo
us r
ecor
d #
# #
#: A
ddre
ss
: Con
tinuo
us r
ecor
d #
# #
#: A
ddre
ss
PLA
Y
T
R E
C
A d
0 0
3 2
PLA
Y
A P
# #
# #
• C
ontin
uous
rec
ord
play
back
from
any
add
ress
A d
0 0
3 2
0
0 3
2 H
(in
itial
val
ue)
0 3
C 0
H0
7 0
0 H
0 8
A 0
H
A d
0 3
c 0
DISP
A d
0 7
0 0
DISP
DISP
DISPA
d 0
8 A
0
* In
the
star
t add
ress
set
ting
stat
e th
e st
art a
ddre
ss c
hang
e di
git c
hang
es w
hen
the
[BA
SS
] but
ton
is p
ress
ed.
A d
0 0
3 2
1st d
igit
(initi
al v
alue
)2n
d di
git
3rd
digi
t
A d
0 0
3 2
MOD
EA
d 0
0 3
2M
ODE
MOD
E
A d
1 9
5 0
: IN
NE
R s
witc
h po
sitio
n m
easu
rem
ent m
enu
: Con
tinuo
us p
layb
ack
(pit
sect
ion)
# #
# #
: Add
ress
PLA
Y
I N
N E
R
Inne
r S
witc
h P
ositi
on M
easu
rem
ent
S Q
# #
# #
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.
: TE
ST
mod
e no
rmal
pla
ybac
k m
enu
: Con
tinuo
us p
layb
ack
@@
@@
@@
: Mod
e an
d ad
dres
s di
spla
y
PLA
Y
N O
R M
A L
Tes
t Mod
e N
orm
al P
layb
ack
@@
@@
@@
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e N
OR
MA
L m
ode
is c
ance
led,
the
pow
er is
turn
ed o
ff.
: Err
or h
isto
ry d
ispl
ay m
enu
: Err
or h
isto
ry 0
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 1
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 2
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 3
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 4
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 5
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 6
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 7
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 8
dis
play
§ §
: Err
or c
ode
: Err
or h
isto
ry 9
dis
play
§ §
: Err
or c
ode
PLA
Y
E
D A
T A
Err
or H
isto
ry D
ispl
ay
E 0
§ §
E 1
§ §
: Err
or h
isto
ry d
ispl
ay m
enu
: Err
or h
isto
ry c
lear
PLA
Y
E
D A
T A
C L
E A
R
SKIP
UP
SKIP
DOW
N
E 2
§ §
SKIP
UP
SKIP
DOW
N
E 3
§ §
SKIP
UP
SKIP
DOW
N
E 4
§ §
SKIP
UP
SKIP
DOW
N
E 5
§ §
SKIP
UP
SKIP
DOW
N
E 6
§ §
SKIP
UP
SKIP
DOW
N
E 7
§ §
SKIP
UP
SKIP
DOW
N
E 8
§ §
SKIP
UP
SKIP
DOW
N
E 9
§ §
SKIP
UP
SKIP
DOW
N
• E
rror
his
tory
cle
ar
• E
rror
his
tory
dis
play
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.
MD-MT20/20C/20W
– 20 –
: EE
PR
OM
set
ting
men
u
: Foc
us s
ettin
g m
enu
: Spi
n se
tting
men
u
: Tra
ckin
g se
tting
men
u
: Sle
d se
tting
men
u
: BA
SS
set
ting
men
u
: TE
MP
set
ting
men
u
: Adj
ustm
ent s
ettin
g m
enu
: Dig
ital E
Q s
ettin
g m
enu
: Con
trol
set
ting
men
u
PLA
Y
E E
P R
O M
EE
PR
OM
Set
ting
F o
c u
s
S p
i n
SKIP
UP
SKIP
DOW
N
T r
a c
kSK
IP U
PSK
IP D
OWN
S l
e d
SKIP
UP
SKIP
DOW
N
B a
s s
SKIP
UP
SKIP
DOW
N
T E
M P
SKIP
UP
SKIP
DOW
N
A D
J S
E T
SKIP
UP
SKIP
DOW
N
D E
Q S
E T
SKIP
UP
SKIP
DOW
N
C T
R L
SKIP
UP
SKIP
DOW
NSK
IP U
P
SKIP
DOW
N
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [P
LAY
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e sp
ecifi
c se
tting
men
u is
set
.
: BA
SS
set
ting
men
u
PLA
Y
B a
s s
BA
SS
Set
ting
B S
1
B S
2SK
IP U
PSK
IP D
OWN
B S
3SK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to
"T
EM
P S
ET
TIN
G m
enu"
.*
In th
e sp
ecifi
c st
ate
the
setti
ng c
hang
es in
the
rang
e of
"00
h to
FF
h" w
hen
the
[V
OL
UP
/DO
WN
] but
ton
is p
ress
ed.
(T
he u
pper
lim
it va
ries
depe
ndin
g on
the
item
s)*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
: Foc
us s
ettin
g m
enu
PLA
Y
F o
c u
s
Foc
us S
ettin
g
F G
F F
1SK
IP U
PSK
IP D
OWN
F F
2SK
IP U
PSK
IP D
OWN
F Z
HSK
IP U
PSK
IP D
OWN
F L
nSK
IP U
PSK
IP D
OWN
D J
GSK
IP U
PSK
IP D
OWN
SKIP
UP
SKIP
DOW
N
F L
V
W T
fSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
spe
cific
sta
te th
e se
tting
cha
nged
in th
e ra
nge
of "
00h
to F
Fh"
whe
n th
e [V
OL
UP
/DO
WN
] but
ton
is p
ress
ed.
(T
he u
pper
lim
it va
ries
depe
ndin
g on
the
item
s)*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
F S
SSK
IP U
PSK
IP D
OWN
MD-MT20/20C/20W
– 21 –
: Spi
n se
tting
men
u
PLA
Y
S p
i n
Spi
n S
ettin
g
S P
G
S P
iSK
IP U
PSK
IP D
OWN
S P
mSK
IP U
PSK
IP D
OWN
S P
oSK
IP U
PSK
IP D
OWN
S P
1SK
IP U
PSK
IP D
OWN
S P
2SK
IP U
PSK
IP D
OWN
S P
3SK
IP U
PSK
IP D
OWN
S P
4SK
IP U
PSK
IP D
OWN
S P
5SK
IP U
PSK
IP D
OWN
S P
DSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
spe
cific
sta
te th
e se
tting
cha
nged
in th
e ra
nge
of "
00h
to F
Fh"
whe
n th
e [
VO
L U
P/D
OW
N] b
utto
n is
pre
ssed
. (
The
upp
er li
mit
varie
s de
pend
ing
on th
e ite
ms)
S P
KSK
IP U
PSK
IP D
OWN
* W
hen
the
[MO
DE
] but
ton
is p
ress
ed in
eac
h st
ate,
the
set d
igit
is c
hang
ed.
: Tra
ckin
g se
tting
men
u
PLA
Y
T r
a c
k
Tra
ckin
g S
ettin
g
T G
T F
1SK
IP U
PSK
IP D
OWN
T F
2SK
IP U
PSK
IP D
OWN
T F
SSK
IP U
PSK
IP D
OWN
T B
oSK
IP U
PSK
IP D
OWN
T B
tSK
IP U
PSK
IP D
OWN
T K
oSK
IP U
PSK
IP D
OWN
T K
tSK
IP U
PSK
IP D
OWN
T D
oSK
IP U
PSK
IP D
OWN
T D
tSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
00h
to F
Fh"
whe
n th
e [V
OL
UP
/DO
WN
] b
utto
n is
pre
ssed
. (T
he u
pper
lim
it va
ries
depe
ndin
g on
the
item
s)
T G
RSK
IP U
PSK
IP D
OWN
S C
tSK
IP U
PSK
IP D
OWN
S C
mSK
IP U
PSK
IP D
OWN
C L
pSK
IP U
PSK
IP D
OWN
C L
rSK
IP U
PSK
IP D
OWN
J P
ISK
IP U
PSK
IP D
OWN
K 1
0SK
IP U
PSK
IP D
OWN
* W
hen
the
[MO
DE
] but
ton
is p
ress
ed in
eac
h st
ate,
the
set d
igit
is c
hang
ed.
MD-MT20/20C/20W
– 22 –
: Slid
e se
tting
men
u
PLA
Y
S l
e d
Sle
d S
ettin
g
S L
G
S L
2SK
IP U
PSK
IP D
OWN
S L
MSK
IP U
PSK
IP D
OWN
S L
VSK
IP U
PSK
IP D
OWN
S K
kSK
IP U
PSK
IP D
OWN
S K
tSK
IP U
PSK
IP D
OWN
S K
mSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
00h
to F
Fh"
whe
n th
e [
VO
L U
P/D
OW
N] b
utto
n is
pre
ssed
. (
The
upp
er li
mit
varie
s de
pend
ing
on th
e ite
ms)
* W
hen
the
[MO
DE
] but
ton
is p
ress
ed in
eac
h st
ate,
the
set d
igit
is c
hang
ed.
W T
mSK
IP U
PSK
IP D
OWN
M V
1SK
IP U
PSK
IP D
OWN
M V
2SK
IP U
PSK
IP D
OWN
S R
VSK
IP U
PSK
IP D
OWN
: Tem
p se
tting
men
u
: TE
MP
ref
eren
ce : Ref
eren
ce
§ §
: T
empe
ratu
re c
ode
: TE
MP
A/D
inpu
t val
ue: M
easu
rem
ent v
alue
PLA
Y
T e
m p
TE
MP
Set
ting
T M
§ §
T p
i n
SKIP
UP
SKIP
DOW
N
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
00h
to F
Fh"
whe
n th
e [
VO
L U
P/D
OW
N] b
utto
n is
pre
ssed
.*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
: Adj
ustm
ent s
ettin
g m
enu
PLA
Y
A D
J S
E T
Adj
ustm
ent S
ettin
g
C O
K
F A
TSK
IP U
PSK
IP D
OWN
T A
TSK
IP U
PSK
IP D
OWN
C A
TSK
IP U
PSK
IP D
OWN
F A
BSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
the
spec
ific
setti
ng d
ispl
ay s
tate
the
setti
ng c
hang
e di
git c
hang
es w
hen
the
[P-M
OD
E]
but
ton
is p
ress
ed.
1st d
igit
(initi
al v
alue
)2n
d di
git
P-M
ODE
P-M
ODE
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
0h to
Fh"
whe
n th
e [V
OL
UP
/DO
WN
] b
utto
n is
pre
ssed
.*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
MD-MT20/20C/20W
– 23 –
: Dig
ital E
Q s
ettin
g m
enu
PLA
Y
D E
Q S
E T
Dig
ital E
Q S
ettin
g
H Q
1
H Q
2SK
IP U
PSK
IP D
OWN
H S
GSK
IP U
PSK
IP D
OWN
H S
OSK
IP U
PSK
IP D
OWN
L Q
1SK
IP U
PSK
IP D
OWN
L Q
2SK
IP U
PSK
IP D
OWN
L S
GSK
IP U
PSK
IP D
OWN
L S
OSK
IP U
PSK
IP D
OWN
G Q
1SK
IP U
PSK
IP D
OWN
F L
pSK
IP U
PSK
IP D
OWN
G Q
2SK
IP U
PSK
IP D
OWN
G S
GSK
IP U
PSK
IP D
OWN
* W
hen
the
[ST
OP
] but
ton
is p
ress
ed in
spe
cific
men
u, th
e "T
ES
T M
OD
E S
TO
P"
stat
e is
set
.*
Whe
n th
e [D
ISP
] but
ton
oper
atio
n is
per
form
ed in
the
spec
ific
stat
e, th
e m
enu
chan
ges
to "
TE
MP
SE
TT
ING
men
u".
* In
the
spec
ific
setti
ng d
ispl
ay s
tate
the
setti
ng c
hang
e di
git c
hang
es
w
hen
the
[P-M
OD
E] b
utto
n is
pre
ssed
. 1
st d
igit
(initi
al v
alue
)
2nd
dig
itP-
MO
DE
P-M
ODE
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
0h to
Fh"
whe
n th
e [V
OL
UP
/DO
WN
] b
utto
n is
pre
ssed
.*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
: Con
trol
set
ting
men
u
PLA
Y
C T
R L
Con
trol
Set
ting
C T
0
C T
1SK
IP U
PSK
IP D
OWN
C T
2SK
IP U
PSK
IP D
OWN
C T
3SK
IP U
PSK
IP D
OWN
R C
0SK
IP U
PSK
IP D
OWN
R C
1SK
IP U
PSK
IP D
OWN
S Y
CSK
IP U
PSK
IP D
OWN
P W
LSK
IP U
PSK
IP D
OWN
D R
1SK
IP U
PSK
IP D
OWN
D R
2SK
IP U
PSK
IP D
OWN
I N
1SK
IP U
PSK
IP D
OWN
I N
2SK
IP U
PSK
IP D
OWN
I N
3SK
IP U
PSK
IP D
OWN
I N
HSK
IP U
PSK
IP D
OWN
Con
tinue
d to
th
e ne
xt p
age
SKIP
UP
SKIP
DOW
N
MD-MT20/20C/20W
– 24 –
Con
tinue
d fr
om
the
prec
edin
g pa
ge
D R
HSK
IP U
PSK
IP D
OWN
P L
ESK
IP U
PSK
IP D
OWN
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
R C
E
E L
T
S L
TSK
IP U
PSK
IP D
OWN
S P
MSK
IP U
PSK
IP D
OWN
SKIP
UP
SKIP
DOW
N
SKIP
UP
SKIP
DOW
N
M S
L
U S
0SK
IP U
PSK
IP D
OWN
SKIP
UP
SKIP
DOW
N
U S
1
U S
2*
Whe
n th
e [S
TO
P] b
utto
n is
pre
ssed
in s
peci
fic m
enu,
the
"TE
ST
MO
DE
ST
OP
" st
ate
is s
et.
* W
hen
the
[DIS
P] b
utto
n op
erat
ion
is p
erfo
rmed
in th
e sp
ecifi
c st
ate,
the
men
u ch
ange
s to
"T
EM
P S
ET
TIN
G m
enu"
.*
In th
e sp
ecifi
c se
tting
dis
play
sta
te th
e se
tting
cha
nge
digi
t cha
nges
whe
n th
e [P
-MO
DE
] b
utto
n is
pre
ssed
.1s
t dig
it (in
itial
val
ue)
2nd
digi
tP-
MO
DE
P-M
ODE
* In
the
spec
ific
stat
e th
e se
tting
cha
nges
in th
e ra
nge
of "
0h to
Fh"
whe
n th
e [
VO
L U
P/D
OW
N] b
utto
n is
pre
ssed
.*
Whe
n th
e [M
OD
E] b
utto
n is
pre
ssed
in e
ach
stat
e, th
e se
t dig
it is
cha
nged
.
MD-MT20/20C/20W
– 25 –
SW401 EJECT OFF—ON
SW402 HOLD OFF—ON
SW403 DISC LID OPEN OFF—ON
SW902 DISC PROTECT OFF—ON
NOTES ON SCHEMATIC DIAGRAM
• Resistor:To differentiate the units of resistors, such symbol as K andM are used: the symbol K means 1000 ohm and the symbolM means 1000 kohm and the resistor without any symbol isohm-type resistor. Besides, the one with “Fusible” is a fusetype.
• Capacitor:To indicate the unit of capacitor, a symbol P is used: thissymbol P means micro-micro-farad and the unit of thecapacitor without such a symbol is microfarad. As to electro-lytic capacitor, the expression “capacitance/withstand volt-age” is used.(CH), (TH), (RH), (UJ): Temperature compensation(ML): Mylar type
• The indicated voltage in each section is the one measuredby Digital Multimeter between such a section and the chas-sis with no signal given.
• Parts marked with “ ” ( ) are important formaintaining the safety of the set. Be sure to replace theseparts with specified ones for maintaining the safety andperformance of the set.
POSITIONREF. NO DESCRIPTION
Figure 25 TYPES OF TRANSISTOR AND DIODE
1SS372
2SA174572SC4213 BRN1103
TOPVIEW
TOP VIEW
SB10015 C
TOP VIEWB
(G)(3)E
(S)1
C(D)(2)
1SS361
TOP VIEW
1SS360
TOP VIEW
SBE8032SA1873 GR
TOP VIEW
MD-MT20/20C/20W
– 26 –
PIN NO. VOLTAGE
1 2
456789
101112131415161718192021222324252627282930313233343536373839404142434445464748
PIN NO. VOLTAGE PIN
NO. VOLTAGE
100
PIN NO. VOLTAGE PIN
NO. VOLTAGE
IC401PIN NO. VOLTAGE PIN
NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
1
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE
PIN NO. VOLTAGE PIN
NO. VOLTAGE
Preform the measurement on the IC401 pin 37 in the TEST mode with GND short-circuited.(LCD is in "TEST" state.)
PIN NO. VOLTAGE
IC101
0.72V0.72V0.72V0.72V1.24V1.24V0.71V1.24V1.24V1.24V1.24V1.24V2.5V2.5V0.18V2.5V2.5V0V0V1.48V2.35V0V0V2.5V1.24V1.24V1.24V1.24V1.24V1V1.24V1.24V1.24VNC1.25V1.25V0.17V1.24V1.24V1.24V1.24V2.5V0V0V1.24V1.24V1.24V0V
IC201
1V 0V 0V
IC501
2.5V 0V
IC701
IC821
1.25V
IC841
NC
IC202
IC351
IC402
IC871
IC702
IC354
IC353
IC601
IC651
IC703
IC771
IC801
IC802
IC901
3
1 2
456789
1011121314151617181920212223242526272829303132333435363738394041424344454647484950
51525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899
3
100
1 2
456789
1011121314151617181920212223242526272829303132333435363738394041424344454647484950
51525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899
3
1 2
456789
101112131415161718192021222324
3
1 2
456789
101112131415161718192021222324
3
2
45
3
1 2
456789
101112
3
1 2
456789
1011121314151617181920
3
1 2
45678
3
1 2
45
3
1 2
45
3
1 2
45
3
1 2
456789
10
910
11121314
3
1 2
45
3
1 2
45678
3
1 2
456
3
1 2
45678
3
1 2
456789
1011121314151617181920
3
1 2
456789
101112131415161718192021222324252627282930313233343536
3
1 2
456789
101112131415161718192021222324
3
1 2
456
3
0.88V2.5V1.27V0V1.25V1.25V1.25V1.25V1.25V1.3V2.2V2V0V0V0V0V1V0V0V0V0V0V0V0V0V
0.49V1.44V1.13V2.56V0.6V1V1V0.8V0.8V0.8V0V2.13V1.4V
0.51V0.51V
1.56V1.1V1.75V2.57V1.74V1.61V0V1.93V1V0.91V
0V0V0V0V2V0V0V0V0V0.14V2V0V0.9V0.9V1.66V1V2V0V1V1V2V0V0V0V0V0V2V0V2V1V2V0V0V1V2V2V0V2.36V0.2V1.65V0V0.1V0.7V1.35V1.76V0.32V2.27V2.36V0.2V
2.5V0V2.35VNC0.18V0V0.23V0V2.23V2.12V2.04V2.25V2.35V0.18V0V0V0V2.35V0.2V2.35V2.26V0.14V1.6V0V0.08V
2.32V2.34V0V2.32V0V2.34V2.34V0.3V2.35V2.35V2.28V2.35V2.35V2.35V1.08V1.13V0V2.34V2.32V2.34V2.34V2.1V2.32V2.32V1.93V
1.6V1.26V1.7V0.27V0V0V2.1V2.72V2.72V2.35V0V2.34V0V2.35V0V2.35V2.35V0V0V2.35V0V0V0V–
2.34V2.34V0.82V1.46V1.33V2.34V2.34V2.34V0V1.62V0V0V2.32V2.33V2.33V2.34V1.7V1.5V0.12V2.33V2.33V2.34V0.18V2.33V
2.5V0V0V0V0V0V0V1V1V1V0V0V2.5V0V0V0V0V0V0V0V0V2.5V2.5V
0V0V0V0V0V0V0V0V0V0V0V0V0V0V0V–2.48V0V0V2.72V0.86V0V0V0V
0.94V1.16V1.15V1.13V0V0.54V4.49V0V0.41V1V1V
1.28V1.63V2.57V1.76V1.44V1.44V0.6V0.6V0.6V2.56V0.6V1V1V1V
0V0V4.42V0V0V
0V9.66V2.34VNC4.46V
4.64V4.48VNC0V4.63V
4.42V0V0.9V
– –0V0V0V
2.74V – –0V0V – –2.74V
2.34V0V – –0V0V0.26V2.34V
4.42V0V0.9V4.42V0V4.46V1V
1.8V1.9V1.7V1.7V0V
0V0V4.72V0V0V0V0V0V0V0V0V4.72V0V0V0V4.72V4.72V0V0V0V4.72V0V0V2.5V9.67V
2.74VNC0V0V0V0V–NC–NC
0V0V0V0V0V
0V2.74V2.74VNC2.5V
0V0.2V0V0V0.73V0.73V
0V–2.44V2V0V2.48V0.67V0V2.35V0V2.5V0V0V0V0V
0V0V0V0V0V
4.49V4.64V0V2.34V
5V5V0.7V5V5V5V
0V0V0.97V0V0V0V
0V1V2.35V0V4.72V0V0V0V4.72V4.72V0V
0V2.34V0V0V0V–2.87V0V0V2.74V0.85V0V0V0V
PIN NO. VOLTAGE
IC431
1 2
43
2.34V2.34VNC0V
PIN NO. VOLTAGE
IC805
1 2
45678
3
2.15V1.38V – –2.86V0V0V –1.49V2.73V
PIN NO. VOLTAGE
IC806
1 2
456
3
0V0V4.44V0V0V0V
PIN NO. VOLTAGE
IC807
1 2
456
3
2V1.98V1.98V0V0V0.94V
PIN NO. VOLTAGE
IC808
1 2
456
3
2.15V0.56V0.56V0V0.56V2.74V
PIN NO. VOLTAGE
1
IC851
NC2
45
31.16V0V1.17V2.33V
PIN NO. VOLTAGE
1
IC872
4.64V2
43
4.64VNC0V
VOLTAGE
MD-MT20/20C/20W
– 27 –
Figure 27 BLOCK DIAGRAM
IC65
1H
EA
D U
P/D
OW
ND
RIV
ER
LB19
30M
VC
C V
S
IC35
1H
EAD
DR
IVER
74AC
T02T
VC
C
V
EE
2.8V
UP
CO
NV
ER
TE
RIC
871
S83
24A
28IC
872
S80
813L
N
CH
AR
GIN
G C
IRC
UIT
IC80
3 F
DT
439N
IC80
5 N
JM02
2VIC
806
ND
C63
1NIC
807
RN
4904
IC80
8 H
N1C
01F
U
M90
3H
EA
DU
P/D
OW
NM
OT
OR
IC84
1X
C62
HS
022.
35V
RE
GU
LAT
OR
IC82
1IR
3M09
ND
C/D
CC
ON
VE
RT
ER
IC50
1A
D/D
A C
ON
VE
RTE
RA
K45
19V
F
M90
2S
LED
MO
TO
R
IC10
1S
IGN
AL
PR
OC
ES
SO
RIR
3R55
2.5V
RE
GU
LAT
OR
IC77
1 6
2GR
2522
2.5V
RE
GU
LAT
OR
IC82
062
FP
2502
IC40
1S
YS
TE
MM
ICR
OC
OM
PU
TE
RIX
0298
AW
RIP
PLE
FIL
TE
R
VC
C
VE
E
IC70
262
GR
4522
4.5V
RE
GU
LAT
OR
OP
IC
LAS
ER
PIC
K
HE
AD
M90
1S
PIN
DLE
MO
TO
R
IC20
1E
NC
OD
E/D
EC
OD
E/
SE
RV
O A
TR
AC
LR37
811
+2.
7V
+2.
5V
T
F
+2.
5V
+2.
7V
+2.
7V
VD
D+
2.0V
+2.
7V
–2.7
V
AV
CC
+2.
5V
+7~
+10
V
+2.
5V
J703HEADPHONES
LINE
J703REMOTE
CONTROL
IC80
2 FD
C63
4PIC
801
HN
1C01
FUO
VER
VO
LTAG
ER
EVER
SE C
ON
NEC
TIO
NPR
OTE
CTI
ON
CIR
CU
IT
J801DC IN JACK
(4~5.5V)
1.7~3.4V
+2.
35V
LCD
UN
IT
KE
Y O
PE
RA
TIO
N U
NIT
IC901SPINDLE MOTOR
DRIVERBA6966FV
IC70
3A
UD
IO A
MP
.IR
3R54
N
IC70
1A
UD
IO A
MP
.IR
3R54
N
IC60
14C
H P
WM
DR
IVE
RM
PC
17A
39 VM
IC40
2E
EP
RO
M
S29
L294
A
+4.
5V
VC
C
VS
IC20
2IX
2567
AF
4M
BIT
D-R
AM
+2.
5V
+4.
5V
OP
TIC
AL
INU
NIT
J701OPTICAL IN
J701LINE IN
J702MIC IN
(READY FOR PLUG/INPOWER)
2.0V
RE
GU
LAT
OR
IC20
062
FP
2002
1, 3, 4, 5,6,19,20
17
1635
VC
CV
G
13
24,2
629
,31
6,8
5,9,
10,1
423
,27,
28,3
2
13,1
424
,42
403
26-2
9,32
-37,
39-4
6
1-9,
11-1
9
14 8,11
4
1
7,9
3,4
57,6
6
7415
6 19
5
2017
2017
10
624
L-
CH
22
R-C
H
19
Q72
1
3
1,13
1-2
2,15
-17,
19-2
2
6-9
1-12
1-3
14-1
652
,69
,70
,83
,84
9, 11,
13,
42
8274
2
2
17-2
4
5031
5
3
5
2
8
5
852,5
310
+2.
7V
82-8
4,86
,89
-100
62
3 3
4
2
1,2,
23,2
4,14
2
7
3
NC
SW
402
HO
LD
SW
902
DIS
CP
RO
TE
CT
55
92 4
SW
401
EJE
CT
SW
403
DIS
C L
IDO
PE
N
97 98
73
12
PLA
YB
AC
K S
IGN
AL
RE
CO
RD
SIG
NA
L+
B
F87
1T
0.5A
L 6
3V
M MM
IC35
4C
PH56
08H
EAD
DR
IVER
IC35
3FT
D20
05H
EAD
DR
IVER
31
36
Q87
3N
DS
332P
FE
TIC
Ni - MH Batteryor
Dry Battery(2 pieces)
+2.
7V
+2.
7V
1, 2
0-30
, 73,
93-
95
R-C
H
L-C
H2
R-C
H3
L-C
H
3
VC
C
L-C
H
5
18R
-CH
MD-MT20/20C/20W
– 28 –
• The numbers 1 to 18 are waveform numbers shown in page 36.
A
B
C
D
E
F
G
H
1 2 3 4 5 6Figure 28 SCHEMATIC DIAGRAM (1/3)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 25.
P28 P29 P30
L921
100m
A TP
665
L206
100m
A
L205
100m
A
L202
100m
A
L201
100m
A
CK105
C20922P(CH)
IC354CPH5608
5 4 3
2 1
D351SBE803
5
4 3 2 1
R4141K
R4131K
TP408
R4151K
R1
R412
10K TP409
TP407
TP
413
R422100K
R46
110
0K
D4311SS361
C4310.47
R431330K
ICSES8
2
1
IC353FTD2005
8 7 6 5
4 3 2 1
C3610.039
C35156P(CH)
R36115
TP
351
R35
15.
6
C3570.1
IC351HEAD DRIVER74ACT02T
11 10 9 8 7
6 5 4 3 2 1
C3540.1
C35310/6.3
Q901RN1113
R920100K
R4031K
R60
056
IC651 HEAD UP/DOWN
DRIVERLB1930M
10 9 8 7 6 5
4 3 2 1
C2001
TP
664
TP
666
CN601 16 9 8 7 6 5 4 3 2 1
TP212
C2040.47
TP187
TP
204
TP602
TP
901
R922100K
R921330
TP400
TP
412
TP
202
C6511
C62
20.
1
C60
21 C
601
1
L6024.7µH
L6014.7µH
C61
01 C
609
1
C60
81
TP601 L6084.7µH
L6094.7µH
L6104.7µH
IC6014CH PWM DRIVER
MPC17A39
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19 18
17
16
15
14
13
12
11
10
9
8 7
6
5
4
3
2
1
TP
207
SW402 HOLD
R60
156
K
C60
50.
1
TP610
C60
022
/6.3
L6002.2µH
TP417
TP416
CK
106
TP
151
R40
410
0K
R22
21M
XL201 33.868MHz
C2115P(CH)
C21
25P
(CH
)
CK
207
L209
100m
A
L203100mA
R20
768
0 L204
100m
A
TP203
CK224
CK222
L6034.7µH
L6044.7µH
C60
31 C
604
1
XL4014.19MHz
R408100KR
407
10K
T
P40
4
TP
403
L17110µH
C17
110
0/6.
3
C1300.1
C1120.033
TP206
R10656K
TP
145
C20
70.
1
C2030.1
R2041K
TP
116
TP
117 TP
120
CN101 9 8 7 6 5 4 3 2 1
TP122 TP121
TP
111
TP
118
TP
110
TP
114
TP
103
TP
108
TP
102
TP
106
TP
109
TP
101
TP
105
TP
115
TP
119
TP
663
TP
662
TP
661
TP
660
TP
659
TP
658
TP
657
TP
656
TP
655
TP
654
TP
653
TP
652
TP
651
C122270P(CH)
C121270P(CH)
C124390P
C123390P
R105390K
TP209
TP210
CK201
CK202
CK203
CK206
CK205 CK204
R206270K
C2050.1
R205330K
C1650.033
R1611.2K
C9033.3
R90
627
0K
R905100K
C9100.033
C9080.22
C9060.0022
C9090.033
C9050.0022
C9070.0022
IC901SPINDLE MOTOR
DRIVERBA6966FV
11 10 9 8 7 6 5 4 3 2 1
R9021
R9011R90433K C911
0.1
R903330
R907180K
R908100K
R90910K C902
0.01
C1031
TP144
IC401SYSTEM
MICROCOMPUTIX0298AWZZ
C10
010
/6.3
L10010µH
TP139
R1541.2K
CK
101
C1611
TP100
R10322K
R10422K
CK
104
C1021
C1110.0033IC101
RF SIGNALPROCESSORIR3R55
48
4
40
35
34
33
32
31
30
29
28
27
26
25
24
9
8
7
6
5
4
3
2
1
IC201ENCODE/
DECODE/SERVOATRAC
LR37811
1 00
76
10 9 8 7 6 5 4 3 2 1
CK
112
TP201
TP
208
C1100.22
C20
11
R10222K
R10122K
CK
103
C1060.22
CK
102
C1091
C1070.012
C1040.027
Q1012SA17457
CK107
TP131
TP130
TP133
CK108
TP132
DSPRST
PC
NT
1
SY
D0
SY
D1
SY
D2
SY
D3
SY
D4
SY
D5
SY
D6
SY
WR
SY
RD
SY
RS
SY
D7
DS
PD
AT
DS
PS
TB
DS
PS
CK
VC
CLA
SE
R
VC
CH
EA
D
SP
VM
SL-
S
L+
T+T-
F-
F+
VCCPWM
VCCPU
VCCRF
ELO
N
AU
DA
TA
PBAULT
HR
EC
EFMO
DIS
CP
R
PD
CN
T
INN
SW
LDC
NT
2LD
CN
T1
X17
6KO
X17
6KO
SLDRF SLDRR
TRDRF
TRDRR
FODRR
FODRF
DCNT1
SPDRF
SPDRR
EF
MO
INN
SW
SP
INH
DO
N
RFLAT
OPICGA
LDON
INPGCK
INPGIN
MCPGIN
PB
MU
TE
BE
EP
AU
SC
LK
RCAULT
RCPCNT
VCCENDEC
LDC
NT
1
LDC
NT
2
SYRS
SYRD
SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
DINT
CIN
SENSE
FOK
SP
DR
R
SP
DR
F
SLD
RR
SLD
RF
TR
DR
R
TR
DR
F
FO
DR
R
FO
DR
F
XRT
AUDATA
AUSCLK
RFLAT
TEMP
LDON
LDVAR
OPICGA
_LCDRST
PLVGIN
PLV
ON
SC
KO
P32
_DC
EX
T
_ELON
GND
VCC
D1
SG1
G2
D2
D2
S1
G2
S2
D1
G1
S2
S1
G
I1
VCC
I2G
O1
O2
RI4
FI4
FI3
RI3
VD4
FO4
PGND
RO4
VD4
VD3
RO3
PGND
FO3
VD3
GND
LG
VC
VG
RI2
FI2
FI1
RI1
VD2
FO2
PGNDRO2
VD2
VD1
RO1
PGND
FO1
VD1
OE
PS
CLK
AGND
JPNP
EX
TA
L
VC
C
_ST
BY
_NM
I
MD
2
WD
TO
VF
MD
1
MD
0
BU
ZO
UT
VSS
RCPCNT
VSS
VS
S
EE
PD
VD
OU
MAIN PWB-A1
UOUT
VM
VOUT
WOUT RF
RIB
STBY
BRK+
BRK- CSL2
CSL1
CST
COM
WIN
VIN
UIN
FG
VCC
GND
T+
T-
F+
F-
PC
NT
1
PB
OP
ON
RCLAT
PBLAT
RADAT
RACLK
RFLAT
OPICGA
EFMO
TCRS
RAA3RAA2
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
VD
D1
DG
ND
AV
CC
EF
MI
DGND
VDD1
VD
D1
DG
ND
BIN
EIN
FIN
AIN
AG
ND
TC
G
SPDRR SP
DR
F
SLD
RR
S
LDR
F
TR
DR
R
TR
DR
F
X17
6KO
TE
ST
2
FO
DR
F
FO
DR
R
TE
ST
0
TE
ST
1
WB
I
VB
AT
SYRDX SYWRX SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
SFSY
SBSY
SBO
SBCK
TEMON
TOTMONX700KO
LDC
NT
2
EM
PH
1
OP
TC
NT
DA
PO
N
AD
PO
N
VX
I
VP
D
X1I
X1O
DIN
DO
UT
VD
D3
DG
ND
LRC
K
BC
LKD
FC
KA
DD
AT
AD
AD
AT
A
FEMON
SY
RS
PLCK
ACRCER
RAA10
LDC
NT
1
LOGIC
LPF HPF
R
and
SW DIFF
DIFF
EFMAGC
ADIPAGC
BIAS
RF1
RF2
RF3
RF4
REFI
REFORFADD
TCGI
AIN
BIN
EIN
FIN
BIA
S
AV
CC
ST
BY
DIS
C
SG
AIN
AG
ND
DG
ND
DT
EM
P
LAT
CH
CLO
CK
DA
TA
DV
CC
FOUT
EOUT
BOUT
AOUT
TCGO
WBO
22KI
22KO
ADLPFO
ADIPO
ADIPI
ADAGC
AD
AG
RF
2-1
EF
MO
EF
MIAVCC
AGND
EF
MA
GC
EF
MA
GI
TT
R
GO
UTROUT
EF
MM
ON
T-
F+T+
F-
INPGCK
_INPGI
_MCPGI
TEST1
TEST0 _K
HO
LD
_REC
DS
PS
CK
DS
PD
AT
DS
PS
TB
D
D
S
C
_RE
SE
T
VCC
XT
AL
INN
SW
LDON
SY
RS
_SY
RD
_SY
WR
SYD7
SYD6
SYD5
SYD4SYD3SYD2
SY
D1
SY
D0
EE
PK
_EP
CS
MECHANISM FLEXIBLEPWB ASS'Y
V U W
COM
-
-
+
+
HE
AD
M901SPINDLEMOTOR
M903HEAD UP/DOWN MOTOR
M902SLEDMOTOR
M
M
M
OP
ICV
CC
MP
/R
B
A
LDO
N
CO
M
CV
CC
VC
C
DG
ND
DG
ND
LDV
AR
AG
ND
E
F
T- F+
T+ F-
RF
2
RF
4
RF
3
RF
1
10
11
12
+B
+B
+B
+B
+B
+B
+B
17
16
15
14
13
2
18
3
4
1
11
10
9
+B
12
1
2
3
4
32
1
+8
PH901PHOTEINTERRUPER
+B
+B
+B
IC353:IC354HEAD DRIVER
SW
902
DIS
C P
RO
TE
CT
PLAYBACK SIGNALRECORD SIGNAL
OPTICAL PICKUP UNIT
FLEXBLEPWB
1 16
FLEXIBLEPWB
IC351
IC90
1
IC60
1
47 46 45 44 43 42 41 39 38 37
36
2322212019181713 14 15 16
10 11 12 13 14 15 16 17 18 19 20 21 22
10 11 12 13 14 15 16 17 18 19 20 21 22 1 9 8 7 6 5 4 3 2
12 13 14
15 14 13 12 11 10
12 13 14 15 16 17 18 19 20
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
99
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 4243 44 45 46 4748 49 50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 6
MD-MT20/20C/20W
– 29 –
7 8 9 10 11 12Figure 29 SCHEMATIC DIAGRAM (2/3)
P28 P29 P30
TP064B
TP070B
TP086BTP087BTP088B
C50
710
/63
C50
510
00P
C50
610
00P
TP082
TP089
TP087
TP085 TP084 TP083
TP080 TP079 TP078
TP086
TP093 TP092 TP091 TP090
TP073
TP063 TP064
TP065 TP066 TP067 TP068 TP069
TP070
TP062
TP061
TP077 TP076
TP075
TP074
TP072 TP071
CN702
9 8 7 6 5 4 3 2 1
TP088
R46
718
K
Q4612SC4738 GR
L206
100m
A
L205
100m
A
L202
100m
A
L201
100m
A
R279100 R
277
39K
C82
722
/6.3
R46
068
K
R83347
C8340.1
D83
11S
S37
2
C8310.1 C832
0.1
9(CH)
TP418
TP483
TP489 TP488
TP486 TP487
TP482 TP481
C4811
C4821
CN482 9 8 7 6 5 4 3 2 1
IC808 CHARGING CIRCUITHN1C01FU
6 5 4 3
2 1
C87
71
R46
656
0K
C8661
R85110K
C851150P(CH)
IC8512.35VREGUTC7S
3 2 1
TP786
TP788 TP789
TP787
TP785
TP783
TP780
TP779
TP793 TP792 TP791 TP790
TP761
TP775 TP774
TP771 TP770 TP769 TP768 TP767
TP765 TP764 TP763
CN701
9 8 7 6 5 4 3 2 1
TP782
TP777
C45
40.
0022
R46
210
0K
R46
410
0K
R4141K
R4131K
TP408
R4151K
IC402EEPROMS29L294A
R411100K
R412
10K
TP411
TP409
TP407
TP410
TP
413
R45856K
R45718K
R4568.2K
R4555.6K
R45318K
R4528.2K
R4515.6K
TP460
CN451
9 8 7 6 5 4 3 2 1
TP453 TP452 TP451
TP461
TP454 TP455 TP456 TP457 TP458 TP459
TP462 TP463
R422100K
R46
110
0K
R46
310
0K
D461RB731U
6 5 4 3
2 1
D4311SS361
C4310.47
R431330K
IC431SESETS80820LN
4
3 2
1
IC20
24M
BIT
D-R
AM
IX25
67A
F
9 8 7 6
5 4 3 2 1
D861EP10LA03
C8631
C86
51
L862100µH
C86
947
/6.3
TP405
IC8202.5V REGULATOR
62FP2502C8201
R803100K
R465100K
R42
622
K
IC2002.0V REGULATOR
62FP2002
C2001
R20
233
IC7024.5V REGULATOR62GR4522
5
4 3 2 1 L8
2210
µH
C8261
R823100K
R828220KC
825
4P(C
H)
R82
933
K
6
5
4
3
2
1
R82
730
0K
R82610K
R82
110
0K
C83
010
00P
R
832
10M
C82256P(CH)
D821EC30LA02
C82
122
0/4
C81
00.
33
R81
118
0K
R810180K
IC822CPH3
TP811
TP
414
C20247/6.3
TP212
TP
204
TP400
TP
412
TP
202
TP
207
SW402 HOLD
0
22/6
.3
L6002.2µH
TP417
TP416
TP406
R406100K
R40510K
TP205
R22
21M
XL201 33.868MHz
C2115P(CH)
C21
25P
(CH
)
CK
207
L209
100m
A
L203100mA
R20
768
0 L204
100m
A
TP203
CK224
CK222
C4010.1
XL4014.19MHz
R42
522
K
R42
422
K
R42
322
K
R408100KR
407
10K
T
P40
4
TP
403
TP415
TP
402
TP401
TP206
C20
70.
1
C203.1
204K
09
10
201
202
203
206
205 04
R206270K
C2050.1
R205330K
IC401SYSTEM
MICROCOMPUTERIX0298AWZZ
1 00
1
C10
010
/6.3
L10010µH
IC201ENCODE/
DECODE/SERVOATRAC
LR37811
1 00
76
10 9 8 7 6 5 4 3 2 1
TP201
TP
208
C20
11
TP
200
VCCVG
DSPRSTDSPSTB
DSPSCK
DSPDAT
DSPRST
VC
C4.
5
RPLAY
RESET
PBMUTE
BEEP
RCAULT
AUSCLK
AUDATA
PBAULT
INPGCK
INPGIN
MCPGIN
ELON
RKEY
RDATA
EMPH0
RPLAY
PC
NT
1
SY
D0
SY
D1
SY
D2
SY
D3
SY
D4
SY
D5
SY
D6
SY
WR
SY
RD
SY
RS
SY
D7
DS
PD
AT
DS
PS
TB
DS
PS
CK
CIN
HKEY2
HREC
HSTOP
HPLAY
HKEY1
VCCRF VCC2.5
VCC2.7X
BATON
BATINCK
PCNT2
TEMP
PLVDCI
PLVDRY
RE
SE
T
BA
TIN
CK
BA
TO
N
RC
PC
NT
ELO
N
PC
NT
2
DINT
AU
DA
TA
PBAULT
HR
EC
HP
LAY
H
ST
OP
VCC2.7
PC
NT
1
PLV
DC
I
PLV
DR
Y
BCLK
LRCK
DAPON
ADPON
DIN
DFCK
ADDATA
OPTCNT
EMPH1
DADATA
DC
NT
1
DIS
CP
R
SP
IN
X17
6KO
RK
EY
EF
MO
INN
SW
PD
CN
T
HD
ON
LDVAR
RFLAT
OPICGA
LDON
INPGCK
INPGIN
MCPGIN
EM
PH
0
PB
MU
TE
BE
EP
AU
SC
LK
RCAULT
RCPCNT
HKEY2
HKEY1
VCCENDEC
VCCDRAM
SENSE
FOK
XRT
LDC
NT
1
LDC
NT
2
SP
DR
R
SP
DR
F
SLD
RR
SLD
RF
TR
DR
R
TR
DR
F
FO
DR
R
FO
DR
F
_LCDRST
OP
EN
DCNT1M
NIHEXT
BAT0FF
CHGCNT
PLVGIN
PLV
ON
SC
KO
P32
CH
GO
N
GND
_DC
EX
T
I/O1
I/O2
WE
RAS
A9
A0
A1
A2
A3
VCC
A5
A6
A7
A8
OE
CAS
I/O3
I/O4
GND
_AR
QK
_ELON
SP
WD
S
PCNT1
OS
EAIN+
DB
EAIN-
VREF
PW
M
GND
EAOUT
PCNT2
JPNP
VDD
VSS
VS
S
EX
TA
L
VC
C
_ST
BY
_NM
I
MD
2
WD
TO
VF
MD
1
MD
0
BU
ZO
UT
VSS
RCPCNT
VSS
VS
S
EE
PD
VSS
VDD
OUT
PC
NT
1
PB
OP
ON
RCLAT
PBLAT
RADAT
RACLK
RFLAT
OPICGA
RM
DA
T
PLVBATPLVDCI
MCMON
EFMO
TCRS
RAA3RAA2
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
VD
D1
DG
ND
AV
CC
EF
MI
DGND
VDD1
VD
D1
DG
ND
BIN
EIN
FIN
AIN
AG
ND
TC
G
SPDRR SP
DR
F
SLD
RR
S
LDR
F
TR
DR
R
TR
DR
F
X17
6KO
TE
ST
2
FO
DR
F
FO
DR
R
TE
ST
0
TE
ST
1
WB
I
VB
AT
SYRDX SYWRX SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
SFSY
SBSY
SBO
SBCK
TEMON
TOTMONX700KO
LDC
NT
2
EM
PH
1
OP
TC
NT
DA
PO
N
AD
PO
N
VX
I
VP
D
X1I
X1O
DIN
DO
UT
VD
D3
DG
ND
LRC
K
BC
LKD
FC
KA
DD
AT
AD
AD
AT
A
FEMON
SY
RS
PLCK
ACRCER
RAA10
LDC
NT
1
EF
MM
ON
CKSTP
PD
CN
T
INPGCK
_INPGI
_MCPGI
TEST1
TEST0
_KH
OLD
_ST
OP
_REC _PLA
Y
_RP
LAY
DS
PS
CK
DS
PD
AT
DS
PS
TB
HDON
DIS
CP
R
_EJSW
_AR
QD
PRTCT
GND
DO
DI
SK
CS VCC
NC
RKEY
AVCC
_FOK
SENSE
_DIN
T
CIN
SP
IN
_RE
SE
T
VCC
XT
AL
EM
PH
0
INN
SW
VS
S
LDON
SY
RS
_SY
RD
_SY
WR
SYD7
SYD6
SYD5
SYD4SYD3SYD2
SY
D1
SY
D0
_XRST
EE
PK
_EP
CS
AVSS
Vref
LDVAR
TEMP
HKEY2
HKEY1
ELON
RDATA
RPLAY
RKEY
PBMUTE
AUDATA
PBAULT
BEEP
RCAULT
AUSCLK
RESET
MCPGIN
INPGCK
INPGIN
EMPH0
AUDIOPWB-A2
GND
P-MODE
ENTER
DISPLY
VOL DOWN
VOL UP
BASS
EDIT
REC
SKIP DOWN
SKIP UP
STOP
PLAY
+B
1
11
9
+B
+B
12
23
1
23
1
1
2
3
4
5
6
7
8
+B
+B
+B
+B
+B
+B+B
+B
+B
33 33
1 1
FLA
T C
AB
LE(2
43)
15
3
G
+B
+B
9 8 7 6 5 4 3 2 1
IC802: IC8OVER VOCONNECTCIRCUIT
IC402
IC702
IC808 IC821
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
99
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 4243 44 45 46 4748 49 50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
10 11 A4
12 13 14 15
16 17 18 19 20
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2728 29 30 31 32 33
11 12 13 14
9 8 7 6 5 4 3 2 1
11 12 13 14
MD-MT20/20C/20W
– 30 –
• The numbers 1 to 18 are waveform numbers shown in page 36.
A
B
C
D
E
F
G
H
1 2 3 4 5 6Figure 30 SCHEMATIC DIAGRAM (3/3)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 25.P28 P30P29
TP064B
TP070B
TP086BTP087BTP088B
TP721BL451150mA
C7761000P
L500
47µH
C4521000P
L456100mA
L452100mA TP729
L453100mA
TP
500
C50
43.
3/10
C50
33.
3/10
C51
11
C50010/6.3C508
1
C76
22.
2
C76
12.
2 R50
04.
7
C50
710
/6.3
C50
510
00P
C50
610
00P
IC501 AD/DA CONVERTERAK4519VF
9 8 7 6 5 4 3 2 1
R501470
C5092.2
R502470
C5102.2
C50
10.
0022
/50
C50
20.
0022
/50
C77
30.
22
C7741
IC7712.5V REGULATOR
62 GR2522
5
4 3 2 1
R71056
SW401EJECT
4 3
2 1
SW403 DISC LIDOPEN
4 3
2 1
L771100µH
C77
147
/6.3
TP082
TP089
TP087
TP085 TP084 TP083
TP080 TP079 TP078
TP086
TP093 TP092 TP091 TP090
TP073
TP063 TP064
TP065 TP066 TP067 TP068 TP069
TP070
TP062
TP061
TP077 TP076
TP075
TP074
TP072 TP071
CN702
9 8 7 6 5 4 3 2 1
TP088
C7231000P
R76
71K
TP721
C712100P(CH)
TP703
Q711RN1444 A
TP714 C7310.22
C711100P(CH)
R7278.2K
TP722
R72639K
R7281K
J703
RE
MO
TE
CO
NT
RO
L/H
EA
DP
HO
NE
S
8 7
6 5
4 3
2
1
C72
63.
3/10
C72
53.
3/10
R7236.8K
R7246.8K
L75122uH
C76
50.
22TP723
R76
915
K
R77
015
K
R7171K
R76
81K
TP705
C70
110
/6.3
L75222uH
IC701AUDIO AMP.IR3R54N
9 8 7 6 5 4 3 2 1
R76368
C75
20.
082
R71310K
TP708
C7351000P
C7131
C70
30.
01
C75
70.
68
R725100
R76
468 TP728
C75
83.
3/10
C7550.01
C75
31
R715100K
TP724
Q7212SC4213 B
TP726
C7660.22
TP709
TP725
R716100K
TP701
C7150.1
C76
00.
027
TP702
TP707
C7223.3/10
R754270K
R75
727
K
R7208.2K
R7198.2K
R7125.6K R711
5.6K
C75
41
R7292.7K
R7302.7K
L714100mA
C75
90.
027
TP704
J701OPTICAL/LINE IN
9 8
7
6
5 4 3 2 1
TP727
C71
41
L454100mA
C75
60.
68 C7201000P
R701100
R7624.3K
R7614.3K
R70
312
0K
J702MICIN
4
3
2
1
L704100mA
L703100mA
D49
215
AZ
7.5Y
R76
5
D49415AZ7.5Y
L712100mA
R49
21K
L702100mA
C75
10.
082
R76
6
R71410K
C4910.1
R75
312
0K
C7213.3/10
C70
210
/6.3
R75
627
K
TP
711
TP713
C7241000P
TP712
L711100mA
L713100mA
R70
210
0
C7340.1 C733
0.1
L7190.47uH
C71910/10
IC70
3A
UD
IO A
MP
.IR
3R54
N
9 8 7 6 5 4 3 2 1
R46
718
K
Q4612SC4738 GR
R80
61K
R279100 R
277
39K
C82
722
/6.3
F871T0.5A L 63V
R46
068
K
C87
61
R83347
C8340.1
D83
11S
S37
2
C8310.1 C832
0.1
D803 1SS382REVERSECONNECTION
4 3 2
1 R8021K
TP483
TP489 TP488
TP486 TP487
TP482 TP481
C4811
C4821
CN482 9 8 7 6 5 4 3 2 1
IC808 CHARGING CIRCUITHN1C01FU
6 5 4 3
2 1
R27
82.
2K
R853100
C2580.0047
R2542.2K
Q874RN1113
C87
71
C8661
R85247K
R85110K
C851150P(CH)
C8521
IC8512.35V REGULATORTC7S14FU
5
4 3 2 1
Q255RN1113
IC807 RN4904
6 5 4 3
2 1
R2763.3K
R26522K
R27556K
Q251RN1113
R263100K
R27475K
C25
60.
1
R26775K
R26418K
R26
610
0K
R25
618
K
R25
818
0K
R26
03.
3M
R27
356
K
Q254RN1113
C25
00.
1
R25
375
K
R25
215
0K
C8710.47
TP786
TP788 TP789
TP787
TP785
TP783
TP780
TP779
TP793 TP792 TP791 TP790
TP761
TP775 TP774
TP771 TP770 TP769 TP768 TP767
TP765 TP764 TP763
CN701
9 8 7 6 5 4 3 2 1
TP782
TP777
R87
110
K
IC872 S80813LN
4
3 2
1
IC871S8324A28
5
4 3 2 1
L87147µH
D812SB10015C
IC803FDT439N CHARGINGCIRCUIT
TP
809
R257100K
R45856K
R45718K
R4568.2K
R4555.6K
R45318K
R4528.2K
R4515.6K
TP460
CN451
9 8 7 6 5 4 3 2 1
TP453 TP452 TP451
TP461
TP454 TP455 TP456 TP457 TP458 TP459
TP462 TP463
J801DC IN
3
2
1
TP802 TP801
L887
TIP
IMP
ED
ER
L888TIP IMPEDERR815
56K
IC802FDC634P
6 5 4
3 2 1
R81624K C
801
0.1
TP800
R8085.6K
IC80
1H
N1C
01F
U
6 5 4 3
2 1
D8001SS360
R80
768
0
D802015Z5.1Y
R80
022
K
R80
12.
2K
C8001
R80
92.
2K
TP805
D80
1S
B10
015C
C80
510
0/6.
3
C8063.3
TP803
TP804
R8041.0A
Q253RN1113
TP808 D861EP10LA03
C8631
C86
51
L862100µH
C86
947
/6.3
R25
01 R
251
1
IC806 NDC631N
6
5
4 3
2
1
R25982K
Q2522SC4738GR
R2682.2K
C2550.1
C25
40.
1
R25
50.
2MR26224K
R261270K
C25
30.
1
IC80
5 N
JM02
2V
8 7 6 5
4 3 2 1
R2711K
R269100
R27
010
0
R465100K
D871EP10LA03
C87
50.
1
C87
415
/10
C84110/6.3
IC8412.35V REGULATORXC62HS02
5
4 3 2 1
IC7024.5V REGULATOR62GR4522
5
4 3 2 1 L8
2210
µH
C8261
R87
810
0K
Q873NDS332P
D8221SS389
R831100KC
829
0.01
C823390P
L8214.7µH
R823100K
R828220K
R82415K
C82
54P
(CH
)
R82
933
K
C82
81
IC821DC/DC CONVERTERIR3M09N
9
8
7 6
5
4
3
2
1
R82
730
0K
R82610K
R82
110
0K
C83
010
00P
R
832
10M
C82256P(CH)
C824560P
D821EC30LA02
C82
122
0/4
C81
00.
33
R81
118
0K
R810180K
IC822CPH3403
TP811
VCC11
VCCVG
DSPRSTDSPSTB
DSPSCK
DSPDAT
VCCPOWER
VC
C4.
5
RPLAY
RESET
PBMUTE
BEEP
RCAULT
AUSCLK
AUDATA
PBAULT
INPGCK
INPGIN
MCPGIN
ELON
RKEY
EMPH0
VCC12
VCC3
EY2
EC
TOP
LAY
EY1
VCC2
VCC1
VCC4
GN
D1
VCC2.7X
VCC13
VCC2.7
MICOM2.35V
PC
NT
1
PLV
DC
I
PLV
DR
Y
DC JACK
VCC
GND
OUT
VDD
VSS
O
- +
+
- O
V-
V+ G
D D
D
S
S
PCNT1
OSCOUT
OSCIN
EAIN+
DB
EAIN-
VREF
OS
C
ROSC
STATEPW
M
VCC
OUTGND
EAOUT
RD
AT
A
EM
PH
0
RE
SE
T
ELON
RDATA
RPLAY
RKEY
PBMUTE
AUDATA
PBAULT
BEEP
RCAULT
AUSCLK
RESET
MCPGIN
INPGCK
INPGIN
EMPH0
RK
EY
RP
LAY
MCPGIN
INPGIN
INPGCK
PB
MU
TE
RC
AU
LT
BE
EP
PB
AU
LT
AU
DA
TA
AU
SC
LK
AUDIOPWB-A2
VB
VC
ML
VC
MR
VR
AD
VR
DA
AIN
R
AIN
L
VA
AG
ND
LRC
K
SC
LK
SD
TI
SD
TO
MC
LK
DE
M0
DE
M1
VD
DG
ND
PW
DA
PW
AD
CM
OD
E
AO
UT
L
AO
UT
R
VC
OM
Vout
GND
VCC
GND R
L
PLA
YKE
Y
R-chL-ch
R-ch
L-ch
R-chL-ch
VE
E
VCC DGND
RO
UT
LOU
T
RIH
P
LIH
P
AG
ND RI LI
VE
E
LIRI
AG
ND
LIH
P
RIH
P
DGNDVCC
LOU
T
RO
UT
LCD ASS'Y
LCD
DRIVERLCD
GND
P-MODE
ENTER
DISPLY
VOL DOWN
VOL UP
BASS
EDIT
REC
SKIP DOWN
SKIP UP
STOP
PLAY
+B
+B
+B
+B+B
33 33
1 1
FLA
T C
AB
LE(2
43)
BATTERYTERMINAL
SW801Ni-MHBATTERYDETECTION
D
G
S
3 2
1
+B
6 7 8
15
3 2
1
2
13
IC805,IC806,IC807CHARGING CIRCUIT
2 3
1
!
3 2
1
G
D
S
+B
S
G
D
9 8 7 6 5 4 3 2 1
KEY SWITCH FLEXIBLE PWB ASS'Y
1
23
RIPPLEFILTER
IC801
2.8V UP CONVERTER
FET IC
SW801
IC802: IC802OVER VOLTAGE REVERSECONNECTION PROTECTIONCIRCUIT
2.8V UP CONVERTER
IC501
IC702
IC808 IC821
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2728 29 30 31 32 33
10
11
12
10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
11 12 13 14
9 8 7 6 5 4 3 2 1
11 12 13 14
10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
R765:R766MD-MT20W18MD-MT20/20C8.2
MD-MT20/20C/20W
– 31 –
A
B
C
D
E
F
G
H
1 2 3 4 5 6
Figure 31 WIRING OF P.W.BOARD (1/5)
OPTICAL PICKUPUNIT(13)
MAGNETIC HEAD FLEXIBLE PWB(18)
MAGNETIC HEAD(24)
MECHANISM FLEXIBLE PWB
M902SLED MOTOR
M903HEADUP/DOWN MOTOR
PH901PHOTOINTERRUPTER
M901SPINDLE MOTOR
SW902DISCPROTECT
TO MAIN PWBP32 5-H
CN601
TO MAIN PWBP32 3-CCN482
LCD Ass'y (214)KEY SWITCH FLEXIBLE PWB Ass'y (213)
TO MAIN PWBP32 2-CCN451
CN101TO MAIN PWB
P32 4-H
MD-MT20/20C/20W
– 32 –
• The numbers 1 to 18 are waveform numbers shown in page 36.
: Through-hole where the top, bottom and +B patterns are connected. : Through-hole where the top, bottom and hround patterns are connected. : Through-hole where the top and bottom patterns are connected.
A
B
C
D
E
F
G
H
1 2 3 4 5 6
Figure 32 WIRING OF P.W.BOARD (2/5)
TP
106
TP
205
TP
110
TP
105
C11
0
C10
9
C10
6
C11
1
TP
100
TP
102
TP
101
CK
112
C11
2TP
139
TP
108
C107
TP
114
TP
200
IC202
TP
404
TP
109
R10
6
TP
144
TP
115
CK
105
IC101 TP
203
TP
402
CN101
TP
111
TP
103
TP
145
TP
791
TP
132
TP
406
TP
415
TP
118
CK
107
TP
116
R40
6
TP
418
TP
809
TP
117
TP
131
TP
206
CK
108
TP
405
TP
808
TP
787
TP
414
TP
133
CK
106
R405
CK102
CK103
TP
207 CK101
C401
TP
130
CK
104 T
P41
1 TP
122
TP
151
Q101 TP
121
C130
TP
119
TP
120
R154
IC402 TP
351
C161
TP
408
IC401
TP
201
TP
409
R908
R90
6
C903
R907
TP407
R905
C908
C902
R909R413 C910
IC351 R903
TP
901
R415 R411C909
TP
413
IC901
R414
R412
C906
TP
659
TP
658
TP
452
TP
187
TP
662
C357
TP
601
C81
0
R902C907
R81
0
R81
1
TP
651
TP
663
TP
410
TP
416
TP
417
C911
TP
652
TP
785
R901R904
TP
655
L921
TP
602
TP
654
TP
811
C82
5
R827
R83
2
R921
TP
653
R452
TP
401
TP
610
R422R922
R85
3
TP
656
TP
489
R828
C82
2
R82
3
R82
6C
830
R829R82
1
L601
C601
R85
1
C85
1
R85
2
D83
1
TP
488
TP
657
CN601 TP
661
TP
486 IC
851
C83
2
C83
1
L602
C85
2C
828 TP
660
IC821
C602
TP
463
TP
664
TP
665
TP
666
L603
C603
C48
2
C481
C82
4
C60
4 IC80
8
C829
R279
TP
481
TP
482
D822
L604
IC807 R831R824
R26
5
R27
3
Q25
4
Q25
1
R26
3
C823R277
C250R264
R253
R252
R27
8
R276
R25
9
R26
0
Q25
3
R261
TP
804
C253Q25
5
R27
5
R26
6
R262R254
R27
1
R27
4
R26
7
R255
C258
C25
6
IC805
C25
4
C25
5
R269
TP
803
R804
TP
483
TP
454
R456
TP
453
R457
TP
451
R455
TP
456
TP
458
CN482 CN451
R424
TP
460
R426TP
461
R425 R453TP
457
TP
805
R451
L888
TP487
R81
5
R81
6
C800
TP462
TP
801
TP
800
C80
1 TP
802
L887
TP
209
TP
210
TP
455
TP
208
TP403 TP400
TP
761
TP
763
TP764
TP
459
TP
765
TP
204
XL401
TP
767
TP
202
TP
768
TP
779
TP
774
TP
769
TP
775
TP
786
TP
770
CN701
TP
788
TP
782
TP
771
TP
777
TP
780
TP
790
TP
412
TP
792
TP
783
TP
793
TP
789
TP
212
R458
6 431
4 6
3 1
1615
10
5
1
14
8
1
5
7
10
14
5 8
C905
1
5
10 11
15
20
712 10
1 5 6
1
5
10
13
1
5
9
33
30
25
20
15
10
5
1
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
SW402HOLD
3736
35
30
25 24 20 1512
13
10
5
1
48
4540
22
1
5
10
15
20
1
23
To Key Switch Flexible Ass'yP31 2-E
To LCD Ass'yP31 5-E
Terminal, Battery(237) /
13 1 9 1
5 4
1 3
1 22 1 16
Terminal, Battery(233)
Terminal, Battery(235)
1
1
TO AUDIO PWB
CN702P34 3-A
MAIN PWB-A1 (BOTTOM VIEW)
FLAT CABLE(243)
33
33
2
1
9
13
11
17
18
10
16
14 15
26 2530
20
15
10
5
1
100
50
51
55
45 40 35
60
65
70
75 80 85 90 9576
J801
8
5
1
4
J801DC IN
To Optical Pickup UnitP31 1-D
To Mechanism Flexible PWBP31 6-D
MD-MT20/20C/20W
– 33 –
7 8 9 10 11 12
Figure 33 WIRING OF P.W.BOARD (3/5)
R27
0
R25
8
R25
7
Q25
2
R256 SW801
R250
IC806
R251
D812
IC803 R268L821 L822
C821
R600
C805
C622
C600
C651
L600
C605C609 L609
C610
C826 C863
C834 R833
L862
C86
5
C86
9
C806
IC60
1
IC822 C608L610
D82
1
C827 D861
L608
C431
C20
4
IC431
D431R20
4
C20
3
Q873R431
Q874
IC651
CK202
CK201
CK206 CK
205
CK
203
CK
204
R601R878
Q901
C361
L171
R466
C20
7C12
4
C12
2
R920R104R361
R102
IC35
3
C12
3
C12
1
C351 R103
IC35
4
D351R101
IC201
R205
C171
R206
C354
R35
1
C205
C35
3
R161
C165
CK
224
CK
222
IC820
R105 C104
C201
R803
R40
7
R40
8
R40
4
R40
3
C10
3
C10
2
C820
IC200 C100
L100
R202
C202C20
0
R80
6
R423
L206L205
R46
2
R80
0
R80
2
XL201
D80
3
C211C212
R222L202
R80
8
L203
L209
L201
IC801
CK
207 L2
04
R20
7
C20
9
R463 R80
1
R80
7
D461
R465
D80
2
C45
4
R46
4
R461
R80
9
D80
0
R871
C871
IC872
D80
1
IC80
2
Q461
IC702 C877
C86
6
R46
7
R46
0C875
IC87
1
C84
1
C874
IC841
D87
1
F871T0.5A L 63V C876
L871
1
2
3
6
4
5
G
D
S
1
5
10
15
18 1920
25
30
3536
8 5
1 41 2 3 1 2
5 4 453
2 1
3
1
5 6
10
G
SD
3
3
3
3
2
2
2
2
1
1
1
3
3
3
2
2
2
1
1
1
1
44
5
5
4
4
4
4
4
5
5
5
6
6
1
23
4S
G
D
31
2
1
5
10
15
20
2526 30 35 40 45 50
51
55
60
65
70
757680859095
100 3
2
1
4
5
6
MAIN PWB-A1 (TOP VIEW)
SW801Ni-MH BATTERY DETECTION
12
3 4
MD-MT20/20C/20W
– 34 –Figure 34 WIRING OF P.W.BOARD (4/5)
A
B
C
D
E
F
G
H
1 2 3 4 5 6
• The numbers 1 to 18 are waveform numbers shown in page 36.
: Through-hole where the top, bottom and +B patterns are connected. : Through-hole where the top, bottom and hround patterns are connected. : Through-hole where the top and bottom patterns are connected.
IC771
R764
C50
3C
504
L500
C50
0C
774
C76
6
C50
2
R502
L771
C77
1
C510
C72
3
C511
R763
R762
R770
R769
R761
C77
3
C501
R501
C76
5
C762
C50
8
SW401EJECT
C509
IC501
R765
R76
7R
500
R76
8
L719
C757
C756
IC703
R76
6C
507
R72
6C
726
R757
R75
6C
506
C50
5
Q72
1
C719
C758
R71
0
Q71
1C
725
R72
5
R72
0R
712
C760
C759
C71
5
R717
R71
9R
711
R754
C75
3C
754
R730
R753
C755
R723
C71
1
SW403DISC LIDOPEN
C722
L702
C75
2
C721
C491
L454
L453
C712
R729
C75
1
R72
4C
720
C72
4L7
12L7
13
L703
C73
1
D49
4R
703
R72
7
L456
C70
3
R72
8R
492
C701
C702
R702
L704
R714
R716
L714
C71
4
D49
2
CN702L751L752
C761
1
5
10 15
20
24
1312
4
5
3
2
19
8
713
152024
15 10
12
3 2
14
3 2
14
33
33
33
6
J701OPTICAL/LINE IN
TO MAIN PWB
CN701P32 2-B
78 6
5
AUDIO PWB-A2 (TOP VIEW)
FLATCABLE(243)
2 1
3 4 5
1
1
1
51015202530
MD-MT20/20C/20W
– 35 –
7 8 9 10 11 12
Figure 35 WIRING OF P.W.BOARD (5/5)
R70
1
C45
2
C735
IC701
C734 C733
C77
6
L452
L711
3
4
8
7
2
1
5
6
J703REMOTECONTOL/
HEADPHONES
J702MIC
IN
1 2
24
3 4
1
5
10
1213
15
20
TP701 TP702
TP711
TP713
TP712
TP714
TP091
TP086B
TP078
TP707
TP708
TP500
TP087B
TP088B
TP087
TP085
TP079
TP090
TP075
TP088 TP083
TP084
TP709
TP074
TP070B
TP089
TP072
TP070
TP067
TP071
TP073
TP724
TP722
TP729
TP721 TP723
TP725 TP721B
TP726
TP704 TP703
TP064B
TP705
TP077 TP068 TP066
TP062
TP064 TP061
TP728
TP727 TP063
TP065
TP076
TP093
TP092
TP082
TP086 TP080 TP069
L451
R715
R713
C713
AUDIO PWB-A2 (BOTTOM VIEW)
MD-MT20/20C/20W
– 36 –
WAVEFORMS OF MD CIRCUIT
NORM:200kS / s
1994 / 12 / 15 22:54:19
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.000V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : NORMALType : EDGE CH4Detay : 0.0nsHold OFF : MINIMUM
T
TP208(FEOUT)
CK204(FOK)
TP122(F+)
CK205(SENSE)
StoppedCH1=1mVDC 10:1
CH3=5VDC 10:1
CH4=2VDC 10:1 (50ms/div)
50ms/divCH2=500mVDC 10:1
T
1
4
3
2
1
2
3
4
NORM:100MS / s
1994 / 12 / 16 00:24:17
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 5KZoom : 5K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : AUTOType : EDGE CH3Detay : 0.0nsHold OFF : MINIMUM
T
SDTi
MCLK
SCLK
LRCK
StoppedCH1=2VDC 10:1
CH3=2VDC 10:1
CH4=2VDC 10:1 (50us/div)
50us/divCH2=2VDC 10:1
T
1
4
3
2
5
6
7
8
ENV
1994 / 12 / 16 01:03:40
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.000VCH4 : 0.00V
=Trigger=Mode : NORMALType : EDGE CH2Detay : 0.0nsHold OFF : MINIMUM
T
TP201(EFM)
TP210(TEOUT)
TP209(TOTAL)
StoppedCH1=1VDC 10:1
CH3=500mVDC 10:1 (2ms/div)
2ms/divCH2=2VDC 10:1
T
1
2
9
10
11
ENV
1994 / 12 / 15 23:31:21
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : NORMALType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
SPDRR
TP601(VM)
StoppedCH1=2VDC 10:1 (50ms/div)
50ms/divCH2=2VDC 10:1
T
1
2
12
13
FULL 20MHzBandwidth
ONSmooth
OFF
1994 / 12 / 18 09:26:46
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : AUTOType : EDGE CH2Detay : 0.0nsHold OFF : MINIMUM
T
TP208(FEOUT)
TP210(TEOUT)
TP656(SL+)
TP657(SL-)
StoppedCH1=2VDC 10:1
CH3=2VDC 10:1
CH4=2VDC 10:1 (1s/div)
1s/divCH2=2VDC 10:1
1
4
3
2
ENV
1
10
14
15
1994 / 12 / 16 01:23:16
=Filter=
=Tracel= P-P 1.280V
=Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.000VCH2 : 0.00V
Main : 1KZoom : 1K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : AUTOType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
TP201(EFM)
StoppedCH1=2VDC 10:1 (500ms/div)
500ms/div
1
MORM:200MS/s
9
1994 / 12 / 15 08:57:26
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.000VCH4 : 0.0V
=Trigger=Mode : NORMALType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
TP201(EFM)
TP210(TEOUT)
TP209(TOTAL)
StoppedCH1=2VDC 10:1 (2ms/div)
2ms/divCH2=2VDC 10:1
1
2
ENV
T
CH3=500mVDC 10:1
9
10
11
1994 / 12 / 15 09:58:45
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : AUTOType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
TP208(FEOUT)
TP210(TEOUT)
SPDRR
TP601(VM)
StoppedCH1=2VDC 10:1
CH3=2VDC 10:1
CH4=2VDC 10:1 (1s/div)
1s/divCH2=2VDC 10:1
1
3
4
2
ENV
1
10
12
13
1994 / 12 / 15 08:39:46
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.0V
=Trigger=Mode : AUTOType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
TP210(TEOUT)
TP656(SL+)
TP657(SL-)
StoppedCH1=2VDC 10:1
CH3=2VDC 10:1 (1s/div)
1s/divCH2=2VDC 10:1
1
3
2
NORM:1kS/s
10
14
15
1994 / 12 / 15 21:54:52
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.00VCH2 : 0.00V
Main : 10KZoom : 10K
CH3 : 0.00VCH4 : 0.00V
=Trigger=Mode : NORMALType : EDGE CH2Detay : 0.0nsHold OFF : MINIMUM
T
T
TP201(EFM)
TP210(TEOUT)
TP121(T-)
StoppedCH1=2VDC 10:1
CH3=1VDC 10:1
CH4=1VDC 10:1 (500us/div)
500us/divCH2=2VDC 10:1
1
3
4
2
ENV
9
10
18
For TP208, TP209, and TP210, use the specific LPF, andobserve the waveform.
When watching the EEM monitor (TP201)Set MSL from 00H to 80H with EEPROM control setting. Aftercompletion restore 00H.
1994 / 12 / 15 09:10:03
=Filter= =Offset= =Record Length=Smoothiing : OFFBW : FULL
CH1 : 0.000VCH2 : 0.00V
Main : 4KZoom : 4K
CH3 : 0.000VCH4 : 0.0V
=Trigger=Mode : NORMALType : EDGE CH1Detay : 0.0nsHold OFF : MINIMUM
T
CK105(HPFO)
CK108(WBO)
StoppedCH1=500mVDC 10:1 (20us/div)
20us/divCH2=2VDC 10:1
1
2
ENV
16
17
1000P
10KTP
Measurement
MD-MT20/20C/20W
– 37 –
TROUBLE SHOOTINGIt is advisable to use the TEST mode (refer to Error Data Display Mode, P19) indicating the causes of troubles beforestarting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is usefulfor repair.
When does not functionWhen the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Cleanthe objective lens,and check the playback operation.When this section does not operate even after the above step is taken,checkthe following items.Remove the cabinet and follow the troubleshooting instructions."Track skipping and/or no TOC(Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens.Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.Do not touch the lens with the bare hand.
Is the power supply turned on when the remote controlbutton or main unit button is pressed? No
Perform the check stated in item "Power is not turned onwhen the PLAY button is pressed".
Perform the check stated in item "Abnormal display".No
Yes
Does the display operate normally?
Is playback state set?
Yes
Perform the check stated in item "Playback state connot beset".No
Is audio output normal?
Yes
Perform the check stated in item "Audio playback circuit".No
Is recording/playback operation normal?
Yes
Perform the check stated in item "Recording/playbackoperation".No
• Power is not turned on when the / button ispressed.
No
NoYes
Check the periphery of remote controller and main unitheadphone terminal (J703) and IC401.
NoIs the pin 55 of IC401 in H state? (TP404)
Is operation normal when the main body button is pressed?
Check the position of Hold switch.
Is power turned on when the remote control button ispressed?
NoDoes the pin 66 of IC401 oscillate? (TP400) Replace XL401.
Yes
MD-MT20/20C/20W
– 38 –
Yes
Check whether there is defective solder joint of audio signalline between IC703 and J703No
Yes
Is audio wavefrom output from J703 pins 3 and 4.
Check the pins 5 and 6 of IC703.No
Yes
Is audio wavefrom output from IC703 pins 18 and 19.
Check IC201 pins 70 to 72, pin 74 and IC501 pins 9, 10, 11,15No
• Abnormal display
No
Yes
Are the pin 4 (VCC) and pin 5 (GND) normal?Is waveform output from IC401 pins 9,11,13?Is waveform output from CN482 pins 6 to 8?
• Playback state cannot be set
Is initialization performed normally in case of high- reflectiondisc playback?
Yes
Check between IC401 andCN482.
No
Check the periphery of IC401.
Does the playback time display advance?Yes
Position check in INNER mode
Check IC201 and IC202 connection line.
Is the lead-in photointerrupter set to OFF when the opticalpickup moves to the innermost periphery in NORMAL mode?(Is TP654 in H level?).
Check the lead-in photointerrupter, mechanical flexPWB soldering and CN601 connection.No
Ia an attempt to repeat repeatedly the TOC part performedon the low-reflection disc?
Yes
NoNo
Replace the disc.No
• Audio playback clrcult
When it has been ascertained that the address up to cluster address is normal in the TEST mode.
Yes
Is audio wavefrom output from IC501 pins 19 and 20?
Check headphones jack,and periphery of headphone.
Although the playback time display is acting., no sound is given during playback in the normal mode.
Check for pattern breakage of flexible PWB, check fordefects of display microcomputer (replace the display unit).
MD-MT20/20C/20W
– 39 –
• The spindle motor fails to run.Does the head move
NoDoes the waveform appear on the IC201 pins 24 and 25 afterTEST mode AUTO2 completion and in this state?
Check the IC201 periphery.
Yes
Does waveform appear on the IC601 pin 13?
Does waveform appear on IC901 pins 1, 19 and 20?
Replace the spindle motor.
YesNo
L608, IC201, IC901, CN601 and flex, etc. soldering check
NoReplace. IC601
Yes
• Recording/playback operation
Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode.
YesDoes the head move down, failing to start record evenwhen the continuous record mode is set after address?
Check voltage of pins 52 and 53 of IC201, pins 3, 4, 7, and 9 ofIC651, pins 1 and 2 of CN601. Check whether disc is record-inhibited.No
Does the RF waveform of TP201 appear when playback is
Does level of pins 86 of IC401 and pin 17 of IC101 changedepending on record and playback?
Is RF pattern output from IC201 pin 50?
Yes
NoCheck for soldering failure of IC201 .
NoCheck periphery of IC401 and IC101.
Check whether there is any damage in IC101, periphery oflaser diode.
Yes
Check for defects of IC351 in head drive flexible PWB,head,flexible PWB.
No
YesIs audio monitor output given in normal mode LINE INrecord?
Check waveforms of pins 9 to 12 of IC501, pins 70 to 73 ofIC201.
Is waveform obtained on IC501 pins 3 and 6?
No
YesCheck whether the pin 7 of IC501 and the pin 59 of IC201 are inH state.
No
NoDoes voltage on the IC701 pins 13 to 15 change in case ofrecord VOLUME UP/DOWN?
Is audio waveform observed on the pins 18 and 19 ofIC703?
Yes
Check whether input waveform is observed on the pins 5and 6 of IC703.
Yes
MD-MT20/20C/20W
– 40 –
1 P12/TCLKA CIN Input Track cross signal/focus drive detection
2 TCLKB SPIN Input Spindle motor FG pulse detection input
3 P14 CHGON Output Ni-MH battery charge ON output
4 P15 DISCPR Input Disc record inhibition switch input
5 TIOCA2 SPWDS Input Spindle motor FG pulse width detection
6 P17 PDCNT Output Inner detection PD current control output
7 Vss VSS — Ground potential
8 TxD0 RMDAT Output Remote control indication data output
9 TxD1 DSPDAT Output Unit indication data output
10 P32 P32 Output Spare [connected to _RPLAY (pin 75)]
11 P33 DSPSTB Output Main unit's display strobe output
12* SCK0 SCK0 Output Serial I/O clock output (not used)
13 SCK1 DSPSCK Output Unit indication data clock output
14 PE0 _EPCS Output EEPROM chip selection output
15 PE1 EEPD Input/Output EEPROM serial data input/output
16 PE2 EEPK Output EEPROM serial clock output
17 PE3 PLVON Output Battery voltage measurement ON output
18 Vss VSS — Ground potential
19 PE4 PCNT1 Outout Vref supply control output of power IC
20 PE5 SYRS Output System LSI register selection output
21 PE6 _SYRD Output System LSI read enable output
22 PE7 _SYWR Output System LSI write enable output
23-30 PD0-PD7 SYD0-SYD7 Input/Output System LSI parallel data bus
31 Vss VSS — Ground potential
32 PC0 RCLAT Output Record audio IC data latch output
33 PC1 _MCPGI Input Microphone plug insertion detection input
34 PC2 _INPGI Input Line/digital plug insertion detection
35 PC3 INPGCK Input Line/digital plug type detection
36 PC4 RCPCNT Input/Output Record circuit power control output
37* PC5 TEST1 Input Test mode setting input 1
38* PC6 TEST0 Input Test mode setting input 0
39 PC7 JPNP Input Kana conversion/Kana input existence/nonexistence discrimination
40 Vcc VCC — Positive power supply
41* PB0 PBO Output Spare 0
42 PB1 _LCDRST Output LCD driver reset output
43 PB2 PBLAT Output Audio IC data latch output
44 PB3 LDON Output P.U. laser ON/OFF control output
45 PB4 OPICGA Output P.U. detection sensitivity selection output
46 PB5 RFLAT Output RF amplifier IC data latch output
47 PB6 RACLK Output RF/Audio IC data clock output
48 PB7 RADAT Output RF/Audio IC serial data output
49 Vss VSS — Ground potential
50 PA0 _ELON Output EL light control output
51 PA1 PLVGIN Output Battery voltage detection gain select output
52 PA2 _REC Input Unit REC button operation detection input
53 PA3 PBOPON Output Audio IC output stage control output
54 P20 _DCEXT Input DC-IN detection input
55 P21 _KHOLD Input Unit key hold switch input
56 TIOCC3 BUZOUT Output Beep sound pulse output
57 MD0 MD0 Input Operation mode selection input 0
IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (1/3)FUNCTION TABLE OF IC
Pin No. FunctionPort Name Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
MD-MT20/20C/20W
– 41 –
58 MD1 MD1 Input Operation mode selection input 1
59 P23 INNSW Input Mechanism inner SW position detection input
60 WDTOVF WDTOVF Output Watch dog timer (not used)
61 MD2 MD2 Input Operation mode selection input 2
62 RES _RESET Input Microcomputer hard reset input
63 NMI _NMI Input Nonmaskable interruption (not used)
64 STBY _STBY Input Microcomputer standby input (not used)
65 Vcc VCC — Positive power supply
66 XTAL XTAL — Crystal connection terminal
67 EXTAL EXTAL — Crystal connection terminal
68 Vss VSS — Ground potential
69 PF7 _STOP Input Unit STOP button operation detection input
70 PF6 _PLAY Input Unit PLAY button operation detection input
71 PF5 EMPH0 Output Audio emphasis control output 0
72* PF4 PF4 Output Spare
73 PF3 _DINT Input System LSI interruption
74 PF2 _ARQD Input Disk cap opens and closes detection/it is started and required
75 PF1 _RPLAY Input Remote control PLAY key operation detection
76 IRQ0 _ARQK Input It is started by the button input, requirement
77 AVcc AVCC — A/D and D/A converter positive power supply
78 Vref VREF — A/D and D/A converter reference voltage
79 AN0 PLVBAT Input Battery voltage detection input
80 AN1 PLVDCI Input DC jack voltage detection input
81 P42 TEMP Output Ambient temperature detection input
82 AN3 RKEY Input Remote control key operation detection input
83 AN4 HKEY1 Input Unit key operation detection input 1
84 AN5 HKEY2 Input Unit key operation detection input 2
85 AN6 CHGCNT Output Charging current control output
86 DA1 LDVAR Output P.U. laser power setting output
87 AVss AVSS — A/D and D/A converter ground potential
88 Vss VSS — Ground potential
89 P24 BATOFF Output Battery OFF output
90 TIOCB4 MCMON Output Internal operation status monitor
91 P26 NIHEXT Input Ni-MH battery detection input
92 P27 DCNT1M Output Mechanism driver enable output
93 PG0 SENSE Input System LSI servo sense input
94 PG1 _FOK Input Focus OK signal input
95 PG2 _XRST Output System LSI hard reset output
96 PG3 CKSTP Output Microcomputer standby operation monitor output
97 PG4 _EJSW Input Ejection lever operation detection input
98 Vcc VDD — Positive power supply
99 P10 PCNT2 Output Vcc supply control output of power IC
100 P11 HDON Output Recording head current control output
IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (2/3)Pin No. FunctionPort Name Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
MD-MT20/20C/20W
– 42 –
52 EXPORT0 LDCNT1 Output Recording head raising-lowering control output 1 See the separate table *3.
53 EXPORT1 LDCNT2 Output Recording head raising-lowering control output 2 See the separate table *3.
54 EXPORT2 — Output Not used. (Open)
55 EXPORT3 EMPH1 Output Audio emphasis control output 1 See the separate table *2.
56 EXPORT4 DCNT Output Mechanism driver enable output 'H': Driver operation ON
57 EXPORT5 OPTCNT Output Optical digital input circuit control 'H': Circuit operation ON
58 EXPORT6 DAPON Output D/A converter operation control output 'H': Operation ON
59 EXPORT7 ADPON Output A/D converter operation control output 'H': Operation ON
System LSI expansion output port (6th generation: LR37811)Pin No. FunctionPort Name Terminal Name Input/Output Remarks
H H Normal mode
H L No adjustment mode
L H Test mode
L L (Settings prohibited)
TEST1 Details
*1: List of TEST port settings
H H fs=32K: 'ON'
H L fs=48K: 'ON'
L H OFF
L L fs=44.1K: 'ON'
EMPH1 EMPH0 Details
*2: List of EMPH port settings
H H Brake
H L Drive UP
L H Drive DOWN
L L Output OFF
LDCNT1 LDCNT0 Details
*3: List of LDCNT port settingsTEST0
IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (3/3)
Charging control works as shown below.Charging is performed in the following three modes.Initial charging -> Main charging Supplementary charging -> FinishThe details are shown below.The current value is measured by voltage on both ends of R250/R251.
CIRCUIT DESCRIPTION
Initial chargingThe charging current is approx. 250 mA. The initial charging time varies depending on the battery condition. The charging time maybe more than five minutes, depending on the initial battery condition. If the battery voltage is below 2.0 V (or over 3.75 V) after twominutes, the charging mode is cancelled. When the battery voltage is over 2.0 V and less than 3.75 V after five minutes, the maincharging mode is selected.
Main chargingThe charging current is approx. 375 mA. The main charging time varies depending on the battery condition.
<Main charging stop mode>When the full-charge check is performed, the output of pin 51 is pulled H and the voltage is measured at five minute intervals (eightseparate voltage measurements should be made to get a mean voltage value for consideration). The voltage value is read 500 msecafter the output of pin 51 (battery voltage detection gain select output) is pulled H.The current reading is compared with the reading taken 30 minutes before and one of three judgements is given: Same, Higher orLower.The voltage drop is detected, and the charging is stopped.When battery voltage is over 2.8 V, a full-charge check will be performed (when it is below 2.8 V, the full-charge check will not beconducted).When the battery voltage is not over 2.8 V, the initial charging mode is not changed to the main charging mode.It may be more than five minutes before the battery voltage exceeds 2.8 V.(The initial charging time varies depending on the battery condition.)
Supplementary chargingThe supplementary charging mode (charging current: 250 A) will be engaged using the following specifications, depending on themain charging mode.After the main charging is completed, the battery is charged for about two hours at a current of 250 mA, and then the charging modeis cancelled.
MD-MT20/20C/20W
– 43 –
Battery voltage measurementWhen the battery is being used or while it is being charged, the output of pin 17 should be H (battery voltage measurement output).The output should be held L in the power-off mode and in the other modes. However, when it is necessary to measure the batteryvoltage, pull pin 17 (battery voltage measurement output) H temporarily, to make the measurement.
Charging test modeFor details about the test mode, see the separate page.
Charging circuit descriptionThe charging current value is determined by measuring the voltage across R250/R251.The charging current is controlled by IC805, Q252, IC803, the rechargeable battery, and R250/R251.The reference voltage for IC401 is output from pin 85 (DA port) and is input on pin 5 on IC805.Since the charging current is controlled by the NFB loop, the circuit is designed so that pin 5 on IC805 will have the same potentialas the voltage across R250/R251. Since R250/R251 is 0.5 ohms, the desired charging current can be obtained by varying thepotential of pin 5 on IC805.
Battery voltage measurementThe battery voltage can be measured using either of the following two modes.1) Pin 51 on IC401 Output L The output should always be L except during the following charging voltage measurement mode.2) Pin 51 on IC401 Output H
The output should be H while in the charging voltage measurement mode.Since the charging voltage is measured at intervals of five minutes while in the charging mode, the output should only be H about500 msec every 5 minutes.
Power supply changeWhen one of the power supplies is selected, the port settings are as follows:
Pin 3 Charge ON output L L
Pin 85 Charging current control output Output port L Output port H
Pin 89 Battery OFF output H (1) L (3)
Port name When operating from the AC adaptor When operating from the battery
The port settings in the power-off mode are as follows:
Pin 3 Charge ON output L L H
Pin 85 Charging current control output Output port L Output port L 3-mode output
Pin 89 Battery OFF output H (1) L (3) L
Port name When operating from the AC adaptor When operating from the battery When charging
R27
82.
2K
C2580.0047
R2542.2K
R25
618
K
R25
818
0K
R26
03.
3M
R27
356
K
Q254RN1113
C25
00.
1
R25
375
K
R25
215
0K
D812SB10015C
IC803FDT439N CHARGINGCIRCUIT
R257100K
TP803
TP804
R8041.0A
Q253RN1113
TP808
R25
01 R
251
1
IC806 NDC631N
6
5
4 3
2
1
R25982K
Q2522SC4738 GR
C25
40.
1
R25
50.
2MR26224K
R261270K
C25
30.
1
IC805 NJM022V
8 7 6 5
R27
010
0
VCC3 VCC4
GN
D1
O
- +
+
- O
V-
V+ G
D D
D
S
S
BATTERYTERMINAL
SW801Ni-MHBATTERYDETECTIOND
G
S
3 2
1
3 2
1
Reference voltage input section
NFB loop
Resistor to detect the charging current
MD-MT20/20C/20W
– 44 –
–– MEMO ––
MD-MT20/20C/20W
PARTS GUIDE
NOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for maintaining the safety and performance of the set.
MODEL MD-MT20(S)MD-MT20C(S)MD-MT20W(BL)MD-MT20W(GL)MD-MT20W(S)
“HOW TO ORDER REPLACEMENT PARTS”To have your order filled promptly and correctly, please furnish thefollowing information.
1. MODEL NUMBER 2. REF. No.3. PART NO. 4. DESCRIPTION
MARK: SPARE PARTS-DELIVERY SECTION
For U.S.A. onlyContact your nearest SHARP Parts Distributor to order.
For location of SHARP Parts Distributor,Please call Toll-Free;1-800-BE-SHARP
Explanation of capacitors/resistors parts codesCapacitorsVCC ....................... Ceramic typeVCK ........................ Ceramic typeVCT ........................ Semiconductor typeVC • • MF ............... Cylindrical type (without lead wire)VC • • MN ............... Cylindrical type (without lead wire)VC • • TV ................ Square type (without lead wire)VC • • TQ ............... Square type (without lead wire)VC • • CY ............... Square type (without lead wire)VC • • CZ ............... Square type (without lead wire)VC • • • • • • • • • J .. The 13th character represents capacity difference.
("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.)
If there are no indications for the electrolytic capacitors, error is ±20%.
ResistorsVRD ....................... Carbon-film typeVRS ........................ Carbon-film typeVRN ....................... Metal-film typeVR • • MF ............... Cylindrical type (without lead wire)VR • • MN ............... Cylindrical type (without lead wire)VR • • TV ................ Square type (without lead wire)VR • • TQ ............... Square type (without lead wire)VR • • CY ............... Square type (without lead wire)VR • • CZ ............... Square type (without lead wire)VR • • • • • • • • • J .. The 13th character represents error.
("J" ±5%, "F" ±1%, "D" ±0.5%.)
If there are no indications for other parts, the resistors are ±5%carbon-film type.
PRICERANK DESCRIPTIONNO. PARTS CODE NO. PARTS CODE PRICE
RANK DESCRIPTION
MD-MT20/20C/20W
– 1 –
INTEGRATED CIRCUITSIC101 VHIIR3R55//-1 J AQ RF Signal,Processor,IR3R55IC200 VHI62FP2002-1 J AE 2.0V Regulator,62FP2002IC201 VHILR37811/-1 J BB Encode/Decode/Servo Atrac,
LR37811IC202 RH-IX2567AFZZ J BA 4M bit D-RAM,IX2567AFIC351 VHI74ACT02T-1 J AE Head Driver,74ACT02TIC353 VHIFTD2005/-1 J AG Head Driver,FTD2005IC354 VHICPH5608/-1 J AH Head Driver,CPH5608IC401 RH-IX0298AWZZ J AX System Microcomputer,
IX0298AWIC402 VHIS29L294A-1 J AH EEPROM,S29L294AIC431 VHIS80820LN-1 J AD Reset,S80820LNIC501 VHIAK4519VF-1 J AQ AD/DA Converter,AK4519VFIC601 VHIMPC17A39-1 J AQ 4ch PWM Driver,MPC17A39IC651 VHILB1930M/-1 J AH Head Up/Down Driver,LB1930MIC701 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54NIC702 VHI62GR4522-1 J AG 4.5V Regulator,62GR4522IC703 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54NIC771 VHI62GR2522-1 J AG 2.5V Regulator,62GR2522IC801 VHIHN1C01FU-1 J AD Over Voltage Reverse
Connection Protection Circuit,HN1C01FU
IC802 VHIFDC634P/-1 J AG Over Voltage Reverse Connec-tion Protection Circuit,FDC634P
IC803 VSFDT439N//-1 J AL Charging Circuit,FDT439NIC805 VHINJM022V/-1 J AG Charging Circuit,NJM022VIC806 VHINDC631N/-1 J AG Charging Circuit,NDC631NIC807 VHIRN4904//-1 J AD Charging Circuit,RN4904IC808 VHIHN1C01FU-1 J AD Charging Circuit,HN1C01FUIC820 VHI62FP2502-1 J AE 2.5V Regulator,62FP2502IC821 VHIIR3M09N/-1 J AL DC/DC Converter,IR3M09NIC822 VHICPH3403/-1 J AE 2.7V Regulator,CPH3403IC841 VHIXC62HS02-1 J AE 2.35V Regulator,XC62HS02IC851 VHITC7S14FU-1 J AE 2.35V Regulator,TC7S14FUIC871 VHIS8324A28-1 J AH 2.8V Up Converter,S8324A28IC872 VHIS80813LN-1 J AE 2.8V Up Converter,S80813LNIC901 VHIBA6966FV-1 J AM Spindle Motor Driver,BA6966FVQ873 VHINDS332P/-1 J AD FETIC,NDS332P
TRANSISTORSQ101 VS2SA17457/-1 J AB Silicon,PNP,2SA17457Q251 VSRN1113///-1 J AC Digital,NPN,RN1113Q252 VS2SC4738GR-1 J AC Silicon,NPN,2SC4738 GRQ253~255 VSRN1113///-1 J AC Digital,NPN,RN1113Q461 VS2SC4738GR-1 J AC Silicon,NPN,2SC4738 GRQ711 VSRN1444A//-1 J AC Digital,NPN,RN1444 AQ721 VS2SC4213B/-1 J AC Silicon,NPN,2SC4213 BQ874 VSRN1113///-1 J AC Digital,NPN,RN1113Q901 VSRN1113///-1 J AC Digital,NPN,RN1113
DIODESD351 VHDSBE803//-1 J AD Silicon,SBE803D431 VHD1SS361//-1 J AB Silicon,1SS361D461 VHDRB731U//-1 J AC Silicon,RB731UD492 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5YD494 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5YD800 VHD1SS360//-1 J AB Silicon,1SS360D801 VHDSB10015C-1 J AD Silicon,SB10015CD802 VHE015Z5R1Y-1 J AD Zener,5.1V,015Z5.1YD803 VHD1SS382//-1 J AC Silicon,1SS382D812 VHDSB10015C-1 J AD Silicon,SB10015CD821 VHDEC30LA02-1 J AF Silicon,EC30LA02D822 VHD1SS389//-1 J AB Silicon,1SS389D831 VHD1SS372//-1 J AD Silicon,1SS372D861 VHDEP10LA03-1 J AD Silicon,EP10LA03D871 VHDEP10LA03-1 J AD Silicon,EP10LA03
COILSL100 VPBNN100K0000 J AC 10 µHL171 RCILC0356AFZZ J AC 10 µH,ChokeL201~206 RCILC0353AFZZ J AB Tip Solid Induction,100mAL209 RCILC0353AFZZ J AB Tip Solid Induction,100mAL451 RCILC0352AFZZ J AB Tip Impeder,150mAL452~454 RCILC0353AFZZ J AB Tip Solid Induction,100mAL456 RCILC0353AFZZ J AB Tip Solid Induction,100mAL500 RCILC0344AFZZ J AC 47 µH,ChokeL600 RCILC0331AFZZ J AC 2.2 µH,ChokeL601~604 RCILC0358AFZZ J AC 4.7 µH,ChokeL608~610 RCILC0358AFZZ J AC 4.7 µH,Choke
L702~704 RCILC0353AFZZ J AB Tip Solid Induction,100mAL711~714 RCILC0353AFZZ J AB Tip Solid Induction,100mAL719 VPBNNR47K0000 J AC 0.47 µHL751,752 RCILC0354AFZZ J AC 22 µH,ChokeL771 RCILC0359AFZZ J AC 100 µH,ChokeL821 RCILC0004AWZZ J AF 4.7 µH,ChokeL822 RCILC0005AWZZ J AF 10 µH,ChokeL862 RCILC0359AFZZ J AC 100 µH,ChokeL871 RCILC0344AFZZ J AC 47 µH,ChokeL887,888 RCORF0017AWZZ J AE Tip ImpederL921 RCILC0353AFZZ J AB Tip Solid Induction,100mA
VIBRATORSXL201 RCRSC0028AFZZ J AH Crystal,33.868 MHzXL401 RCRM-0201AFZZ J AD Ceramic,4.19 MHz
CAPACITORSC100 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC102,103 VCKYTV1AB105K J AD 1 µF,10VC104 VCKYCY1CB273K J AA 0.027 µF,16VC106 VCKYTV1CB224K J AB 0.22 µF,16VC107 VCKYCY1EB123K J AA 0.012 µF,25VC109 VCKYTV1AB105K J AD 1 µF,10VC110 VCKYTV1CB224K J AB 0.22 µF,16VC111 VCKYCY1HB332K J AA 0.0033 µF,50VC112 VCKYCY1CB333K J AA 0.033 µF,16VC121,122 VCCCCY1HH271J J AA 270 pF (CH),50VC123,124 VCCSCY1HL391J J AA 390 pF,50VC130 VCKYCY1CB104K J AB 0.1 µF,16VC161 VCKYTV1AB105K J AD 1 µF,10VC165 VCKYCY1CB333K J AA 0.033 µF,16VC171 VCSATE0JJ107M J AE 100µF,6.3V,Electrolytic,TantalumC200,201 VCKYTV1AB105K J AD 1 µF,10VC202 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,TantalumC203 VCKYCY1CB104K J AB 0.1 µF,16VC204 VCKYTV1CB474K J AC 0.47 µF,16VC205 VCKYCY1CB104K J AB 0.1 µF,16VC207 VCKYCY1CB104K J AB 0.1 µF,16VC209 VCCCCY1HH220J J AA 22 pF (CH),50VC211,212 VCCCCY1HH5R0C J AA 5 pF (CH),50VC250 VCKYCY1CB104K J AB 0.1 µF,16VC253 VCKYTV1CB104K J AA 0.1 µF,16VC254~256 VCKYCY1CB104K J AB 0.1 µF,16VC258 VCKYCY1HB472K J AA 0.0047 µF,50VC351 VCCCCY1HH560J J AA 56 pF (CH),50VC353 VCSAFA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC354 VCKYCY1CB104K J AB 0.1 µF,16VC357 VCKYCY1CB104K J AB 0.1 µF,16VC361 VCKYTV1HB393K J AB 0.039 µF,50VC401 VCKYCY1CB104K J AB 0.1 µF,16VC431 VCKYTV1CB474K J AC 0.47 µF,16VC452 VCKYCY1HB102K J AA 1000 pF,50VC454 VCKYCY1HB222K J AA 0.0022 µF,50VC481,482 VCKYTQ1CB105K J AD 1 µF,16VC491 VCKYTV1CB104K J AA 0.1 µF,16VC500 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC501,502 VCKYCY1HB222K J AA 0.0022 µF,50VC503,504 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,TantalumC505,506 VCKYCY1HB102K J AA 1000 pF,50VC507 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC508 VCKYTV1AB105K J AD 1 µF,10VC509,510 VCKYTV1CF225Z J AC 2.2 µF,16VC511 VCKYTV1AB105K J AD 1 µF,10VC600 VCEAPS226AF0J J AB 22 µF,6.3V,ElectrolyticC601~604 VCKYTV1AB105K J AD 1 µF,10VC605 VCKYCY1CB104K J AB 0.1 µF,16VC608 VCKYTQ1CB105K J AD 1 µF,16VC609,610 VCKYTV1AB105K J AD 1 µF,10VC622 VCKYCY1CB104K J AB 0.1 µF,16VC651 VCKYTV1CF105Z J AB 1 µF,16VC701,702 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC703 VCKYCY1EB103K J AA 0.01 µF,25VC711,712 VCCCCY1HH101J J AA 100 pF (CH),50VC713,714 VCKYTV1AB105K J AD 1 µF,10VC715 VCKYCY1CB104K J AB 0.1 µF,16VC719 VCSATA1AJ106M J AE 10 µF,10V,Electrolytic,TantalumC720 VCKYCY1HB102K J AA 1000 pF,50VC721,722 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,TantalumC723,724 VCKYCY1HB102K J AA 1000 pF,50VC725,726 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,TantalumC731 VCKYCY1CF224Z J AB 0.22 µF,16V
NO. PRICERANK DESCRIPTIONPARTS CODENO. PARTS CODE
PRICERANK DESCRIPTION
MD-MT20/20C/20W
– 2 –
C733,734 VCKYTV1CB104K J AA 0.1 µF,16VC735 VCKYCY1HB102K J AA 1000 pF,50VC751,752 VCKYTV1CB823K J AB 0.082 µF,16VC753,754 VCKYTV1CF105Z J AB 1 µF,16VC755 VCKYCY1EB103K J AA 0.01 µF,25VC756,757 VCKYTV1AB684K J AC 0.68 µF,10VC758 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,TantalumC759,760 VCKYCY1CB273K J AA 0.027 µF,16VC761,762 VCKYTV1CF225Z J AC 2.2 µF,16VC765,766 VCKYTV1CB224K J AB 0.22 µF,16VC771 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,TantalumC773 VCKYTV1CB224K J AB 0.22 µF,16VC774 VCKYTV1CF105Z J AB 1 µF,16VC776 VCKYCY1HB102K J AA 1000 pF,50VC800 VCKYTV1AB105K J AD 1 µF,10VC801 VCKYCY1CB104K J AB 0.1 µF,16VC805 VCEAPS107AF0J J AC 100 µF,6.3V,ElectrolyticC806 VCKYTQ1AB335K J AF 3.3 µF,10VC810 VCKYTV1CB334K J AC 0.33 µF,16VC820 VCKYTV1AB105K J AD 1 µF,10VC821 VCEAPS227AF0G J AC 220 µF,4V,ElectrolyticC822 VCCCCY1HH560J J AA 56 pF (CH),50VC823 VCCSCY1HL391J J AA 390 pF,50VC824 VCCSCY1HL561J J AA 560 pF,50VC825 VCCCCY1HH4R0C J AA 4 pF (CH),50VC826 VCKYTQ1CB105K J AD 1 µF,16VC827 RC-SZ0001AWZZ J AG 22 µF,6.3V,ElectrolyticC828 VCKYTV1AB105K J AD 1 µF,10VC829 VCKYCY1EB103K J AA 0.01 µF,25VC830 VCKYCY1HB102K J AA 1000 pF,50VC831,832 VCKYCY1CB104K J AB 0.1 µF,16VC834 VCKYCY1CB104K J AB 0.1 µF,16VC841 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,TantalumC851 VCCCCY1HH151J J AA 150 pF (CH),50VC852 VCKYTV1AB105K J AD 1 µF,10VC863 VCKYTQ1CB105K J AD 1 µF,16VC865,866 VCKYTQ1CB105K J AD 1 µF,16VC869 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,TantalumC871 VCKYTV1CB474K J AC 0.47 µF,16VC874 RC-SZ1145AFZZ J AD 15 µF,10V,ElectrolyticC875 VCKYTV1CB104K J AA 0.1 µF,16VC876,877 VCKYTV1AB105K J AD 1 µF,10VC902 VCKYCY1EB103K J AA 0.01 µF,25VC903 VCKYTQ1AB335K J AF 3.3 µF,10VC905~907 VCKYCY1HB222K J AA 0.0022 µF,50VC908 VCKYTV1CB224K J AB 0.22 µF,16VC909,910 VCKYCY1CB333K J AA 0.033 µF,16VC911 VCKYCY1CB104K J AB 0.1 µF,16V
RESISTORSVRS-CY1JB000J J AA 0 ohm,Jumper,0.8×1.55mm,
GreenVRS-TV2AB000J J AA 0 ohm,Jumper,1.25×2mm,Green
R101~104 VRS-CY1JB223J J AA 22 kohms,1/16WR105 VRS-CY1JB394J J AA 390 kohms,1/16WR106 VRS-CY1JB563J J AA 56 kohms,1/16WR154 VRS-CY1JB122J J AA 1.2 kohms,1/16WR161 VRS-CY1JB122J J AA 1.2 kohms,1/16WR202 VRS-TV2AB330J J AA 33 ohms,1/10WR204 VRS-CY1JB102J J AA 1 kohm,1/16WR205 VRS-CY1JB334F J AA 330 kohms,1/16WR206 VRS-CY1JB274F J AA 270 kohms,1/16WR207 VRS-CY1JB681J J AA 680 ohms,1/16WR222 VRS-CY1JB105J J AA 1 Mohm,1/16WR250,251 VRS-TV2AB1R0F J AB 1 ohm,1/10WR252 VRS-CY1JB154D J AA 150 kohms,1/16WR253 VRS-CY1JB753D J AA 75 kohms,1/16WR254 VRS-CY1JB222J J AA 2.2 kohms,1/16WR255 VRS-CY1JB225J J AA 0.2 Mohms,1/16WR256 VRS-CY1JB183J J AA 18 kohms,1/16WR257 VRS-CY1JB104J J AA 100 kohm,1/16WR258 VRS-CY1JB184J J AA 180 kohms,1/16WR259 VRS-CY1JB823J J AA 82 kohms,1/16WR260 VRS-CY1JB335J J AA 3.3 Mohms,1/16WR261 VRS-CY1JB274F J AA 270 kohms,1/16WR262 VRS-CY1JB243F J AA 24 kohms,1/16WR263 VRS-CY1JB104J J AA 100 kohm,1/16WR264 VRS-CY1JB183D J AA 18 kohms,1/16WR265 VRS-CY1JB223D J AA 22 kohms,1/16WR266 VRS-CY1JB104D J AA 100 kohm,1/16WR267 VRS-CY1JB753D J AA 75 kohms,1/16W
R268 VRS-CY1JB222J J AA 2.2 kohms,1/16WR269,270 VRS-CY1JB101J J AA 100 ohm,1/16WR271 VRS-CY1JB102J J AA 1 kohm,1/16WR273 VRS-CY1JB563J J AA 56 kohms,1/16WR274 VRS-CY1JB753D J AA 75 kohms,1/16WR275 VRS-CY1JB563D J AA 56 kohms,1/16WR276 VRS-CY1JB332D J AA 3.3 kohms,1/16WR277 VRS-CY1JB393J J AA 39 kohms,1/16WR278 VRS-CY1JB222J J AA 2.2 kohms,1/16WR279 VRS-CY1JB101J J AA 100 ohm,1/16WR351 VRS-TV2AB5R6J J AA 5.6 ohms,1/10WR361 VRS-TQ2BB150J J AA 15 ohms,1/8WR403 VRS-CY1JB102J J AA 1 kohm,1/16WR404 VRS-CY1JB104J J AA 100 kohm,1/16WR405 VRS-CY1JB103J J AA 10 kohm,1/16WR406 VRS-CY1JB104J J AA 100 kohm,1/16WR407 VRS-CY1JB103J J AA 10 kohm,1/16WR408 VRS-CY1JB104J J AA 100 kohm,1/16WR411 VRS-CY1JB104J J AA 100 kohm,1/16WR412 VRS-CY1JB103J J AA 10 kohm,1/16WR413~415 VRS-CY1JB102J J AA 1 kohm,1/16WR422 VRS-CY1JB104J J AA 100 kohm,1/16WR423 VRS-CY1JB223F J AA 22 kohms,1/16WR424 VRS-CY1JB223J J AA 22 kohms,1/16WR425 VRS-CY1JB223J J AA 22 kohms,1/16WR426 VRS-CY1JB223F J AA 22 kohms,1/16WR431 VRS-CY1JB334J J AA 330 kohms,1/16WR451 VRS-CY1JB562J J AA 5.6 kohms,1/16WR452 VRS-CY1JB822J J AA 8.2 kohms,1/16WR453 VRS-CY1JB183J J AA 18 kohms,1/16WR455 VRS-CY1JB562J J AA 5.6 kohms,1/16WR456 VRS-CY1JB822J J AA 8.2 kohms,1/16WR457 VRS-CY1JB183J J AA 18 kohms,1/16WR458 VRS-CY1JB563J J AA 56 kohms,1/16WR460 VRS-CY1JB683J J AA 68 kohms,1/16WR461~465 VRS-CY1JB104J J AA 100 kohm,1/16WR466 VRS-CY1JB564J J AA 560 kohms,1/16WR467 VRS-CY1JB183J J AA 18 kohms,1/16WR492 VRS-CY1JB102J J AA 1 kohm,1/16WR500 VRS-CY1JB4R7J J AA 4.7 ohms,1/16WR501,502 VRS-CY1JB471J J AA 470 ohms,1/16WR600 VRS-CY1JB560J J AA 56 ohms,1/16WR601 VRS-CY1JB563J J AA 56 kohms,1/16WR701,702 VRS-CY1JB101J J AA 100 ohm,1/16WR703 VRS-CY1JB124J J AA 120 kohms,1/16WR710 VRS-TV2AB560J J AA 56 ohms,1/10WR711,712 VRS-CY1JB562J J AA 5.6 kohms,1/16WR713,714 VRS-CY1JB103J J AA 10 kohm,1/16WR715,716 VRS-CY1JB104J J AA 100 kohm,1/16WR717 VRS-CY1JB102J J AA 1 kohm,1/16WR719,720 VRS-CY1JB822J J AA 8.2 kohms,1/16WR723,724 VRS-CY1JB682J J AA 6.8 kohms,1/16WR725 VRS-CY1JB101J J AA 100 ohm,1/16WR726 VRS-CY1JB393J J AA 39 kohms,1/16WR727 VRS-CY1JB822J J AA 8.2 kohms,1/16WR728 VRS-CY1JB102J J AA 1 kohm,1/16WR729,730 VRS-CY1JB272J J AA 2.7 kohms,1/16WR753 VRS-CY1JB124J J AA 120 kohms,1/16WR754 VRS-CY1JB274J J AA 270 kohms,1/16WR756,757 VRS-CY1JB273J J AA 27 kohms,1/16WR761,762 VRS-CY1JB432J J AA 4.3 kohms,1/16WR763,764 VRS-CY1JB680J J AA 68 ohms,1/16WR765,766 VRS-CY1JB180J J AA 18 ohms,1/16W [MD-MT20W]R765,766 VRS-CY1JB8R2J J AA 8.2 ohms,1/16W [MD-MT20/20C]R767,768 VRS-CY1JB102J J AA 1 kohm,1/16WR769,770 VRS-CY1JB153J J AA 15 kohms,1/16WR800 VRS-CY1JB223J J AA 22 kohms,1/16WR801 VRS-CY1JB222F J AA 2.2 kohms,1/16WR802 VRS-CY1JB102J J AA 1 kohm,1/16WR803 VRS-CY1JB104J J AA 100 kohm,1/16WR804 VHHMSMDC100-1 J AH Thermistor,Positive/Negative C,
1.0AR806 VRS-TV2AB102J J AA 1 kohm,1/10WR807 VRS-CY1JB681F J AA 680 ohms,1/16WR808 VRS-CY1JB562J J AA 5.6 kohms,1/16WR809 VRS-CY1JB222J J AA 2.2 kohms,1/16WR810,811 VRS-CY1JB184F J AA 180 kohms,1/16WR815 VRS-CY1JB563F J AA 56 kohms,1/16WR816 VRS-CY1JB243F J AA 24 kohms,1/16WR821 VRS-CY1JB104J J AA 100 kohm,1/16WR823 VRS-CY1JB104J J AA 100 kohm,1/16WR824 VRS-CY1JB153J J AA 15 kohms,1/16W
PRICERANK DESCRIPTIONNO. PARTS CODE NO. PARTS CODE PRICE
RANK DESCRIPTION
MD-MT20/20C/20W
– 3 –
R826 VRS-CY1JB103J J AA 10 kohm,1/16WR827 VRS-CY1JB304F J AF 300 kohms,1/16WR828 VRS-CY1JB224F J AA 220 kohms,1/16WR829 VRS-CY1JB333J J AA 33 kohms,1/16WR831 VRS-CY1JB104J J AA 100 kohm,1/16WR832 VRS-CY1JB106J J AA 10 Mohm,1/16WR833 VRS-CY1JB470J J AA 47 ohms,1/16WR851 VRS-CY1JB103J J AA 10 kohm,1/16WR852 VRS-CY1JB473J J AA 47 kohms,1/16WR853 VRS-CY1JB101J J AA 100 ohm,1/16WR871 VRS-CY1JB103J J AA 10 kohm,1/16WR878 VRS-CY1JB104J J AA 100 kohm,1/16WR901,902 VRS-CY1JB1R0J J AA 1 ohm,1/16WR903 VRS-CY1JB331J J AA 330 ohms,1/16WR904 VRS-CY1JB333J J AA 33 kohms,1/16WR905 VRS-CY1JB104J J AA 100 kohm,1/16WR906 VRS-CY1JB274J J AA 270 kohms,1/16WR907 VRS-CY1JB184J J AA 180 kohms,1/16WR908 VRS-CY1JB104J J AA 100 kohm,1/16WR909 VRS-CY1JB103J J AA 10 kohm,1/16WR920 VRS-CY1JB104J J AA 100 kohm,1/16WR921 VRS-CY1JB331J J AA 330 ohms,1/16WR922 VRS-CY1JB104J J AA 100 kohm,1/16W
OTHER CIRCUITRY PARTSCN101 QCNCW801XAFZZ J AH Socket,22PinCN451 QCNCW804NAFZZ J AE Socket,13PinCN482 QCNCW804JAFZZ J AE Socket,9PinCN601 QCNCW716RAFZZ J AF Socket,16PinCN701,702 QCNCWWQ33AFZZ J AE Socket,33Pin
! F871 QFS-L501AAFN0 J AG Fuse,T0.5A L 63VJ701 VHLGP1FB95R-1 J AP Jack,Optical/Line INJ702 QJAKM0014AWZZ J AF Jack,Mic INJ703 QJAKM0015AWZZ J AL Jack,Remote Control/
HeadphonesJ801 QJAKC0007AWZZ J AF Jack,DC INM901 RMOTV0524AFZZ J AS Motor Ass’y [Spindle]M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled]M903 RMOTV0512AFM1 J AR Motor Ass’y [Head Up/Down]PH901(8-3) VHPGP1S93K/-1 J AF Phote Interrupter,GP1S93KSW401 QSW-M0172AFZZ J AD Switch,Push Type [Eject]SW402 QSW-S0948AFZZ J AC Switch,Slide Type [Hold]SW403 QSW-M0172AFZZ J AD Switch,Push Type
[Disc Lid Open]SW801 QSW-M0006AWZZ J AD Switch,Push Type
[Ni-MH Battery Detection]SW902(8-2) QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect]
MECHANICAL PARTS1 NGERH0597AFZZ J AC Wheel,Drive2 NSFTD0334AFZZ J AD Screw,Drive3 LHLDX3141AFM1 J AP Cartridge Holder Ass’y4 MSPRT1625AFFJ J AD Spring,Eject Lever5 LANGF1610AFZZ J AC Bracket,Cancel6 LCHSM0944AFM1 J AT Main Chassis Ass’y7 PCUSG0599AFZZ J AB Cushion,Mechanism8 QPWBH0337AFM1 J AN Mechanism Flexible PWB Ass’y8- 1 ———— — Mechanism Flexible PWB
(Not Replacement Item)8- 2(SW902) QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect]8- 3(PH901) VHPGP1S93K/-1 J AF Phote Interrupter,GP1S93K9 MSPRP0925AFZZ J Spring,Drive Screw10 PCOVP1339AFZZ J AD Cover,Mechanism11 MARMM0170AFM1 J AK Magnetic Field Block12 NGERH0603AFZZ J AE Gear,Drive
! 13 RCTRH8175AFZZ J BM Optical Pickup Unit[Except for U.S.A.]
! 13 RCTRH8175AF10 J BM Optical Pickup Unit [For U.S.A.]14 MSPRP0922AFFJ J AD Spring,Drive Grip15 MSPRP0923AFZZ J Spring,Thrust Plate16 NSFTM0292AFFW J AC Shaft,Guide17 MLEVF2641AFZZ J Lever,Eject18 QPWBH0338AFZZ J AH Magnetic Head Flexible PWB19 MLEVF2637AFM1 J AH Lift Working Lever Ass’y20 MLEVF2638AFFW J AD Lever,Block21 MLEVF2639AFFW J AD Lever,Lift Joint22 MLEVF2640AFZZ J Lever,Lift23 MSPRD1362AFFJ J AD Spring,Lift Lever24 RCILH0112AFZZ J AM Magnetic Head501 LX-BZ0804AFFF J AA Screw,ø1.4×2.2mm502 LX-JZ0154AFZZ J AA Screw,ø1.4×2.8mm
503 LX-BZ0823AFZZ J AA Screw,ø1.4×1.2mm504 LX-WZ9290AFZZ J AA Washer,ø0.8×ø2.4×0.2mm505 LX-BZ0800AFZZ J AA Screw,ø1.4×2.5mm506 XSPSN14P01500 J AA Screw,ø1.7×2.5mm507 LX-JZ0148AFZZ J AA Screw,ø1.7×3mm508 XWSSD14-05000 J AA Washer,ø1.4×0.5mm509 LX-BZ0959AFZZ J AB Screw,ø1.4×1.8mm510 LX-WZ9296AFZZ J AA Washer,ø1.5×ø3.5×0.25mm511 LX-BZ0974AFZZ J AB Screw,ø1.4×5.5mm512 LX-BZ0991AFZZ J AB Screw,ø1.2×1.6mmM901 RMOTV0524AFZZ J AS Motor Ass’y [Spindle]M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled]M903 RMOTV0512AFM1 J AR Motor Ass’y [Head Up/Down]
CABINET PARTS201 GFTAT3004AWM1 J AW Top Cabinet Ass’y
[MD-MT20-S/20C-S/20W-S]201 GFTAT3004AWM2 J AW Top Cabinet Ass’y
[MD-MT20W-BL]201 GFTAT3004AWM3 J AW Top Cabinet Ass’y
[MD-MT20W-GL]201- 1 ———— — Top Cabinet
(Not Replacement Item)201- 2 ———— — Bracket,Top Cabinet
(Not Replacement Item)202 HDECQ0480AWM1 J AM Decoration Plate Ass’y202- 1 ———— — Plate,Decoration
(Not Replacement Item)202- 2 PSHEZ0033AWZZ J AD Sheet,Decoration Plate203 TCAUS0044AWZZ J AB Label A,Class 3B
[MD-MT20W Only]204 PSHEZ0035AWZZ J AB Sheet A,Operation Button205 PSHEZ0036AWZZ J AB Sheet B,Operation Button206 PSHEZ0037AWZZ J AC Sheet C,Operation Button207 JKNBZ0623AWSA J AM Button,Operation208 LANGT0058AWFW J AG Bracket,Operation Button209 MSPRP0026AWFW J AB Spring A,Cartridge210 MSPRP0027AWFW J AC Spring B,Cartridge211 MSPRP0028AWFW J AB Spring C,Cartridge212 TCAUS0043AWZZ J AC Label B,Class 3B
[MD-MT20W Only]213 RUNTK0005AWZZ J AV Key Switch Flexible PWB Ass’y214 RUNTZ0015AWZZ J BD LCD Ass’y215 PSHEZ0046AWZZ J AB Sheet E,LCD216 PSHEZ0044AWZZ J AB Sheet C,LCD217 PCUSZ0016AWZZ J AB Cushion,Mechanism,Top218 PSHEZ0045AWZZ J AB Sheet D,LCD219 PCUSZ0017AWZZ J AB Cushion,Cartridge220 GFTAU3008AWSA J AS Bottom Cabinet [MD-MT20-S]220 GFTAU3009AWSA J AS Bottom Cabinet [MD-MT20C-S]220 GFTAU3010AWSA J AS Bottom Cabinet [MD-MT20W-S]220 GFTAU3011AWSA J AS Bottom Cabinet [MD-MT20W-BL]220 GFTAU3012AWSA J AS Bottom Cabinet
[MD-MT20W-GL]221 JKNBZ0625AWSA J AD Button,Hold222 GCOVA1241AWSA J AC Cover,DC IN Jack223 PSHET0014AWZZ J AE Sheet,Bottom Cabinet224 PSHEZ0043AWZZ J AB Insulate Fiber,
Bottom Cabinet Sheet225 LHLDZ3010AWM1 J AW Main Frame Ass’y226 PCUSZ0015AWZZ J AB Cushion,Mechanism,Front227 PCUSZ0014AWZZ J AB Cushion,Mechanism,Right228 PCUSG0534AFZZ J AC Rubber,Preventive Vibration229 PCUSG0641AFSA J AB Insulator230 PSHET0015AWZZ J AB Sheet B,Insulator231 PSHET0016AWZZ J AC Sheet C,Insulator232 PCOVW1009AW00 J AC Cover,Battery Terminal,-233 QTANB9018AWFQ J AD Terminal,Battery,-234 PCOVW1008AW00 J AC Cover,Battery Terminal,+235 QTANB9017AWFQ J AD Terminal,Battery,+236 PGIDM0027AW00 J AC Guide,Battery237 QTANB9016AWFQ J AD Terminal,Battery,+/-238 LHLDZ1231AW00 J AC Holder,Battery Terminal,+/-239 MLEVP0094AW00 J AC Lever,Battery Push240 JKNBZ0624AWSA J AF Lever,Open241 GCABA1185AWSA J AF Front Cabinet
[Except for MD-MT20W-BL]241 GCABA1185AWSB J AF Front Cabinet [MD-MT20W-BL]242 GCABB1185AWSA J AE Rear Cabinet
[Except for MD-MT20W-BL]242 GCABB1185AWSB J AE Rear Cabinet [MD-MT20W-BL]
NO. PRICERANK DESCRIPTIONPARTS CODENO. PARTS CODE
PRICERANK DESCRIPTION
MD-MT20/20C/20W
– 4 –
243 QCNWN1478AWZZ J AG Flat Cable,33Pin244 PSHEF0019AWZZ J AB Felt,Mechanism Flexible PWB245 GDORB0001AWSA J AE Door,Battery [MD-MT20-S/
20C-S/20W-S]245 GDORB0001AWSB J AE Door,Battery [MD-MT20W-BL]245 GDORB0001AWSC J AE Door,Battery [MD-MT20W-GL]246 PCUSZ0012AWZZ J AB Cushion,Vub247 PSHEZ0047AWZZ J Insulate Fiber B601 LX-BZ0045AWF3 J Screw,ø1.4×2mm602 LX-BZ0805AFFN J AB Screw,ø1.7×2.5mm603 LX-BZ0045AWFN J Screw,ø1.4×2mm
ACCESSORIES/PACKING PARTS (MD-MT20C/20W)QCNWG0382AFZZ J AK Connecting Cord,RCA TypeQCNWG0422AFZZ J AQ Optical Digital CableRADPA3040AWZZ J AX AC Adaptor [MD-MT20C]RADPA5402AFZZ J BF AC Adapter [MD-MT20W Except
for Taiwan/Australia/New Zealand/Hong Kong]
RADPA5403AFZZ J BF AC Adaptor[MD-MT20W for Taiwan]
RADPA6435AFZZ J BG AC Adaptor [MD-MT20W forAustralia/New Zealand]
RADPA8493AFZZ J BH AC Adaptor [MD-MT20W forHong Kong]
RPHOH0003AWZZ J AZ Headphones [MD-MT20C Only]RPHOH0176AFZZ J AR Earphones [MD-MT20W Only]RRMCW0001AWSA J AZ Remote ControlSPAKA0219AWZZ J AC Packing Add.,Unit [MD-MT20W]SPAKA0220AWZZ J AC Packing Add.,Unit [MD-MT20C]SPAKC0810AWZZ J AG Packing Case [MD-MT20W-S]SPAKC0811AWZZ J AG Packing Case [MD-MT20C]SPAKC0825AWZZ J AG Packing Case [MD-MT20W-BL]SPAKC0829AWZZ J AG Packing Case [MD-MT20W-GL]SPAKZ0485AWZZ J AD Pad,AC Adaptor [MD-MT20C]SPAKZ0486AWZZ J AD Pad,AC Adaptor [MD-MT20W
Except for Australia/New Zealand]
SPAKZ0487AWZZ J AD Pad,AC Adaptor [MD-MT20W forAustralia/New Zealand]
SPAKZ0490AWZZ J AC Pad,Operation Manual[MD-MT20W for Australia/New Zealand Only]
SPAKZ0518AWZZ J AB Sheet,ProtectSPAKZ0522AWZZ J AC Cushion,ProtectTCAUA0040AWZZ J AB Card,Taiwan Caution
[MD-MT20W for Taiwan Only]TCAUH0050AWZZ J AB Caution,Headphones
[MD-MT20C Only]TGANZ0022AW20 J AE Card,Taiwan Guarntee [MD-
MT20W-BL for Taiwan Only]TGANZ0022AW21 J AE Card,Taiwan Guarntee [MD-
MT20W-GL for Taiwan Only]TGANZ0022AW32 J Card,Taiwan Guarntee [MD-
MT20W-S for Taiwan Only]TINSE0253AWZZ J AE Operation Manual [MD-MT20W
for Australia/New Zealand]TINSK0093AWZZ J AG Operation Manual [MD-MT20C]TINSZ0431AWZZ J AG Operation Manual [MD-MT20W
Except for Australia/New Zealand]
TLABE0304AWZZ J AB Label,Bar Code [MD-MT20W-Sfor Australia/New Zealand/Taiwan Only]
TLABE0305AWZZ J AB Label,Bar Code [MD-MT20W-GLfor Australia/New Zealand/Taiwan Only]
TLABE0306AWZZ J AB Label,Bar Code [MD-MT20W-BLfor Australia/New Zealand/Taiwan Only]
TLABG0002AWZZ J AB Label,Hong Kong [MD-MT20Wfor Hong Kong Only]
TLABH0055AWZZ J AF Sheet,E/C Comparision [MD-MT20W for Taiwan Only]
TLABJ0009AWSA J AB Label,SHARP Corpration Japan[MD-MT20W for Chile/Peru/Bolivia Only]
TLABJ0010AWZZ J AB Label,Japan [MD-MT20W forChile/Peru/Bolivia Only]
TLABN0088AWZZ J AB Label,SER No. [Except forTaiwan of MD-MT20W]
TLABN0092AWZZ J AB Label,SER No. [MD-MT20C/20Wfor New Zealand]
TLABN0092AW02 J AB Label,SER No. [MD-MT20WExcept for Asia/Middle andNear East/Africa/Australia/New Zealand/Hong Kong]
TLABN0094AWZZ J AB Label,Taiwan SER.No. [MD-MT20W for Taiwan Only]
TLABRF232AWZZ J AB Label,Bar Code [MD-MT20C]TLABR1054AWZZ J AB Label,Bar Code [MD-MT20W-S
for Central South America/Brazil/Chile/Peru/Bolivia Only]
TLABR1055AWZZ J AB Label,Bar Code [MD-MT20W-BLfor Central South America/Brazil/Chile/Peru/Bolivia Only]
TLABR1056AWZZ J AB Label,Bar Code [MD-MT20W-GLfor Central South America/Brazil/Chile/Peru/Bolivia Only]
TLABS0225AWZZ J AB Label,CPA [MD-MT20W for Asia/Middle and Near East/AfricaOnly]
TLABZ0589AWZZ J AB Label,Taiwan Impoter [MD-MT20W-S for Taiwan Only]
TLABZ0590AWZZ J AB Label,Taiwan Impoter [MD-MT20W-BL for Taiwan Only]
TLABZ0591AWZZ J AB Label,Taiwan Impoter [MD-MT20W-GL for Taiwan Only]
TLABZ0600AWSA J AC Label,Made in Malaysia [MD-MT20W for Australia/New Zealand/Brazil Only]
TLABZ0618AWZZ J AB Label,Made in Malaysia [MD-MT20W for Australia/NewZealand/Taiwan/Brazil Only]
TLSTS0011AWZZ J AB Taiwan SS List[MD-MT20W for Taiwan Only]
TSPC-0574AWZZ J AC Label,Taiwan Specifications[MD-MT20W-S for TaiwanOnly]
TSPC-0576AWZZ J AC Label,Taiwan Specification [MD-MT20W-BL for Taiwan Only]
TSPC-0577AWZZ J AC Label,Taiwan Specifications[MD-MT20W-GL for TaiwanOnly]
UBAGC0001AWZZ J AK Battery Carrying CaseUBAGC0002AWSA J AK Carrying CaseUBATM0002AWSA J BC Battery,Rechargeable Nickel-
Metal Hydride92LG-CARD1266E J AB Gurantee Card [MD-MT20W for
Australia/New Zealand Only]92LPLUG155A J AG Adaptor,AC Plug [MD-MT20W
for Middle South America/Brazil/Chile/Peru/Bolivia Only]
ACCESSORIES (MD-MT20)QCNWG0382AFZZ J AK Connecting Cord,RCA TypeQCNWG0422AFZZ J AQ Optical Digital CableRADPA3040AWZZ J AX AC Adaptor [MD-MT20]RPHOH0003AWZZ J AZ Headphones [MD-MT20]RRMCW0001AWSA J AZ Remote ControlTCAUH0050AWZZ J AB Caution,Headphones
[MD-MT20 Only]TINSE0254AWZZ J AE Operation Manual [MD-MT20]TINSZ0429AWZZ J AB Quick Guide [MD-MT20 Only]UBAGC0001AWZZ J AK Battery Carrying CaseUBAGC0002AWSA J AK Carrying CaseUBATM0002AWSA J BC Battery,Rechargeable Nickel-
Metal Hydride
P.W.B. ASSEMBLY (Not Replacement Item)PWB-A1,2 92LPWB3107MDSS J — Main,Audio (Combined Ass’y)
OTHER SERVICE PARTSUDSKM0001AFZZ J AZ Recording Mini Disc88GMMD-110 J BV High Reflection Disc MMD-110
(TEAC Test MD)88GMMD-212 J BU Low Reflection Disc MMD-212
(TEAC Test MD)88GMMD-213A J Low Reflection Disc MMD-213A
(TEAC Test MD)
MD-MT20/20C/20W
A
B
C
D
E
F
G
H
1 2 3 4 5 6
Figure 5 MD MECHANISM EXPLODED VIEW– 5 –
M903
M902
M901
503x2
502x3
508x2501x2
11
505
24
18509
512
8-2(SW902)
8-1
8
8-3(PH901)
507503
5079
19151
2
1416
13
511510
21
504
12
503
5
3
10
2317
4
22
20
6
7
506
MD-MT20/20C/20W
A
B
C
D
E
F
G
H
1 2 3 4 5 6
Figure 6 CABINET EXPLODED VIEW– 6 –
MD MECHANISM
202-2202-1
202
201
201-1
603x2
203
205207
206204
201-2
214
216x2215
213
217
209
208
211
601
212
210
224
223
240
242
601
602 602244
602x3
225
243
245
238237
229x2
230
239
231603x2
241
226
228
227
PWB-A2
PWB-A1
236
235
234233
232
218
603x2
221603x2
603x2 603222
220
219
219
246
MD-MT20W Only
MD-MT20W Only
247
MD-MT20/20C/20W
– 7 –
PACKING OF THE SET (MD-MT20 ONLY)
Setting position of switches and knobs
UNIT HOLD OFF
Remote Control HOLD CANCEL
A9907-3034NS•HA•M
SHARP CORPORATIONCommunication Systems GroupQuality & Reliability Control CenterHigashihiroshima, Hiroshima 739-0192, Japan
Printed in Japan
COPYRIGHT 1999 BY SHARP COPORATION
ALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system, or transmitted inany from or by any means, electronic, mechanical,photocopying, recording, or otherwise, withoutprior written permission of the publisher.
©
Battery Carrying Case
Quick Guide
Optical Digital Cable
Operation Manual
Headphones Caution
Carying Case
TLABN0088AWZZSER No. Label
1
3
2
SPAKZ0522AWZZProtect Cushion
SPAKZ0518AWZZProtect Sheet
TLABR1051AWZZBar Code Label
TLABN0092AWZZSER No. Label
SPAKC0809AWZZPacking Case
RechargeableBattery
Headphones
Connecting CordRemote Control
SPAKA0220AWZZPacking Add., Unit
Not Replacement Item
SPAKZ0485AWZZAC Adaptor Pad
AC Adaptor
SA • SC • SL • SZ • EX • LAG
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