Boss ME-33 Service Notes

8/3/2019 Boss ME-33 Service Notes

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ME-33 May. 2001

2

Jacks

INPUT Jack

AUX IN Jack (Stereo Mini Type)

OUTPUT Jacks L (MONO) / R

PHONES Jack (Stereo Mini Type)

AC Adaptor Jack

Power Supply

DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor

(PSAseries: Optional)

Current Draw

160 mA

* Expected battery life under continuous use:

Carbon: 3.5 hours

Alkaline: 12 hours

These figures will vary depending on the actual conditions

of use.

Dimensions

397.5 (W) x 212 (D) x 67 (H) mm

15-11/16 (W) x 8-3/8 (D) x 2-11/16 (H) inches

Weight

1.8 kg / 4 lbs (including batteries)

Accessories

Owner's Manual (#SE000160)

Dry Batteries Alkaline: LR6 (AA) type x6 (#********)

Roland Service (information Sheet)

Options

AC Adaptor (PSA series)

* 0 dBu = 0.775 Vrms

* In the interest of product improvement, the specifications

and/or appearance of this unit are subject to change without

prior notice.

* AF Method (Adaptive Focus method)

This is a proprietary method from Roland that vastly

improves the signal-to-noise (S/N) ratio of the A/D and D/A

converters.

A U X IN

L(M O N O )/R

A C

D C 9 V 3 x6ACBO SS PSA -100

160 m A

3.5

12

397.5x 212x 67m m

1.8 kg

#SE000159

3 x 6#********

(#40016489)

A C BO SS PSA -100

0 dBu = 0.775 V rm s

A F A daptive Focus m ethod

A D D A S/N


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ME-33

LOCATION OF CONTROLS[Parts]

No. Part Code Part Name Description Q'ty1 01238178 7SEG. LED LN514RA 1

2 SE000174 LCD #U00056462500 1

SE000208 KAKUSAN-SHEET #U00056350100 1

SE000202 BACKLIGHT PLATE #U00056333200 1SE000203 LCD CONNECTOR #U00056338700 2

SE000290 WHITE-SHEET #U00056352300 1

3 SE000170 VR KNOB #U00056330800 6

SE000185 POT.RV110T-40E1-125A-B54 #U00056458100 6

17048630 VR ACCESSORY NUT M9 6

17048631 VR ACCESSORY WASHER M9 6

4 SE000171 RUBBER SWITCH #U00056335400 1

5 SE000172 TACT SWITCH SKQKAKD010 #U00053696200 5

22180605 SWITCH PEDAL 5

6 SE000077 RUBBER PLATE #U00056336500 1

7 SE000162 VR PEDAL #U00056321800 1

8 SE000161 TOP CASE #U00056320700 1

9 22360712 CORD HOOK 1

10 13449717 ADAPTOR JACK HEC2392-01-150 1

11 SE000096 SWITCH HSW-2022-010010 #MA25000830 1

12 13449440 JACK HSJ0857-01-210 2

13 SE000173 PHONE JACK HTJ-064-121 #U00056460300 3

14 SE000165 PANEL #U00056340000 1

1

14

2 3 4 6

7

5

13 11 9

12 10

8

/


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ME-33 May. 2001

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EXPLODED VIEW

[Parts]

No. Part Code Part Name Description Q'ty1 SE000161 TOP CASE #U00056320700 1

2 SE000162 VR PEDAL #U00056321800 1

3 SE000163 BATTERY CASE B #U00056322000 1

4 SE000164 BATTERY COVER #U00029512100 1

7 22180605 SWITCH PEDAL 5

8 SE000202 BACKLIGHT PLATE #U00056333200 1

9 22360712 CORD HOOK 236-712 1

10 SE000171 RUBBER SWITCH #U00056335400 1

11 SE000169 RUBBER PLATE #U00056336500 1

12 22350313 FOOT MKS 235-313 5

13 SE000077 VR PEDAL CUSHION FRONT #U00029566100 1

14 SE000078 VR PEDAL CUSHION REAR #U00029567200 1

15 SE000203 LCD CONNECTOR #U00056338700 2

16 22350171 RUBBER FOOT 235-171 5

17 SE000174 LCD #U00056462500 1

18 SE000166 REAR PANEL #U00056341100 1

19 SE000167 BOTTOM COVER #U00056342200 1

20 SE000168 PEDAL HOLDER #U00056343300 5

22 SE000204 BATTERY TERMINAL +/- #U00056344400 2

23 SE000205 BATTERY TERMINAL + #U00056345500 1

24 SE000089 BATTERY TERMINAL C #MA34002570 1

25 22170103 SUPPORT SPRING (FOR SWITCH PEDAL) 5

28 SE000208 KAKUSAN-SHEET #U00056350100 1

29 SE000209 WHITE-SHEET #U00056352300 1

30 SE000127 VR PEDAL REFLECT SEAL #U00052149300 1

[Screws]

No. Part Cord Part Name Description Q'tya 40011278 SCREW 3x8 BINDING TAPTITE P FE ZC 17

b 40011323 SCREW 3x10 BINDING TAPTITE P FE BZC 12

c 40127689 SCREW 3x10 BINDING TAPTITE S FE BZC 1

d 40016590 NYLON RIVET NRP-345 BLACK 1

e SE000196 HEXAGON SOCKET BOLT M6x60 BZC #U00056406300 1

f 40016001 LOCK NUT M6 U BZC 1

g 40016067 PLAIN WASHER 6x13x1 BZC 1

h 40348223 SPRING WASER M6 NO2 SWRH BZC 2

i 40123545 JACK NUT M9x11x2 HLJ0999-01-240 3

j SE000156 INTERNAL TOOTH WASHER M9.1x13 Ni 3

k 40016445 MINI JK NUT HSJ0999-01-190 2

l 40016456 MINI JK WASHER HSJ0999-01-210 2

30

g

e

2

11

f

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25

7

1

h

a

27

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i lk

9

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d18

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17

28 8

29

23

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22

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a

b

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3

4

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ME-33 May. 2001

8

3. SW/VR check

Depressing any button following the 7-segment LED display

pattern causes the switch name to appear on the LCD screen.

Depress the button following the display and check that the

display on the LCD screen changes accordingly.

Upon completion of checking all buttons, the VR names will

appear on the LCD screen.

While "0" is displayed on the 7-segment screen, operate each

VR to the left.

While "1" is displayed, operate each one to the right.

Upon completion of check, moving to the next VR takes place

automatically.

When the last VR has been operated and the check is

successfully concluded, moving to the next step takes place

automatically.

If something is found to be wrong during this process, you

cannot go to the next SW/VR check or step.

4. DSP check

The following check will be made automatically.

4-1. Initialization test

When the result is 'NG', "ERROR 1" will appear on the LCD

screen and you will not be able to go to the next step.

If the result is 'OK', go to the next step without displaying

anything.

4-2. Internal RAM read/write test




anything.

4-3. External RAM read/write test




anything.

3. SW /VR

7SEG , LE D

LC D

LC D

LC D VR

7SE G "0" 1

VR

V R

V R

SW /V R

4. D SP

4-1.

'N G ' LC D "ER R O R 1"

'O K '

4-2. RA M


'O K '

4-3. RA M


'O K '


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ME-33 May. 2001

10

9. Check of AUX circuit operation.

"TEST 5" will appear on the LCD screen.

Enter a 200 Hz (200 mVp-p) rectangular wave in AUX IN (both

L and R).

Three different waveforms are output at 0.5-second intervals

(Automatic loop).

Check the output waveform of OUTPUT L/R using an

oscilloscope.

Check Lch (MONO) and Rch on individually.

Return to the previous check using the [EFFECT L] button.

Go to the next check using the [EFFECT R] button.

10. Residual noise check


Switch the noise meter to 'JIS-A' or 'IHF' mode.

Check the output of OUTPUT L/R without connecting INPUT

and AUX IN (short circuited input, the state of short-circuited

signal and GND lines) using a noise meter.

OUTPUT L and R at or below -84.0 dBu (JIS-A) or at or below-

84.0 dBu (IHF)


Set the level difference between Lch and Rch to +1 dBu or -1

dBu.



11. High gain residual noise and shock noise check


Check the output of OUTPUT L/R using a noise meter.

OUTPUT L and R at or below -39.0 dBu (JIS-A) or at or below

-39.0 dBu (IHF).

Remove the noise meter, connect a high gain amplifier to

OUTPUT L and R, and check for abnormal noise through a

speaker.

Apply shock to the main unit and check for shock noise.




9. A UX

LC D "TE ST 5"

A U X INL, R 200 H z (200 m V p-p)

0.5 3

O U TP U T L/R

Lch (M O N O ), R ch

[EFFEC T L]

[EFFEC T R ]

10.

LC D "TE ST 6"

'JIS-A ' 'IH F'

IN PU T, AU X IN G N D OU TPU T L/R

O U TP U T L, R -84.0 dB u (JIS-A ) -84.0 dB u (IH F)


Lch, R ch '+1 dB u or -1 dB u'

[EF FE C T L]

[EFFEC T R ]

11.LC D "TE ST 7"

O U TP U T L/R

O U TP U T L /R -39.0 dB uJIS-A-39.0 dB u

IH F

O U TPU T

L, R


[EFFEC T L]

[EFFEC T R ]


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ME-33 May 2001


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BLOCK DIAGRAMA

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BUFFERPRE ENPH

PRE ENPH

IC1 IC3

IC2AUX IN

IC4

MULTI

AMP

PLEXER

(MONO)

(STEREO)

AD/DAIC7

LPFDE ENPHIC9 IC8

OUTPUT(STEREO)AMP

PHONES

MUTE

DSP

DRAM

EEPROM

H8/3847R

IC14

ESP4

IC15

IC17,18

IC16

BUSCPU

PHOTOINTERRUPTOR

AMP

VR x 6SWITCHLCD

LED DRIVERIC11

7SEG LED &LED

RESETIC13

POWER

DC-DC CNV

GUITAR INMAIN BOARD

PEDAL BOARD

BATTERY

ADAPTOR IN

AMP

POWER SW

A

D

+D 3

+8VA +4VIN +4VOUT+A 9

-

-

-

-

... .

..

.

.

.

.

/

ME-33 May 2001


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ME 33 May. 2001

13

CIRCUIT BOARD (MAIN BOARD) 1/2A

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/ (MAIN BOARD)

ME-33 May. 2001


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CIRCUIT BOARD (MAIN BOARD) 2/2/ (MAIN BOARD)


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ME-33 May. 2001


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CIRCUIT DIAGRAM (MAIN BOARD) 2/2

ANALOG CIRCUIT DIAGRAM

GUITAR IN

AUX IN

OUT L

AC ADAPTOR

HEADPHONES

OUT R

-20dBm

-10dBm

-20dBm

-20dBm

S D

fc=7.2KHz

L

R

L

R

ADDA

DC-DC CNV

A

A

A

A

A A A A

A A A

+8VA

+8VA +4VIN

A

A

+8VA

+4VIN

A

A A

AA

A

A

A

A

A

A

A

A A

AA

+A 9

A

+8VA

A

+8VA

+8VA

A

A

A

+8VA

A

+8VA

D D

DD

D

D+D 3

+A 9

+8VA

D

A

A

+8VA

A

+8VA

A

+8VA

+4VIN

+4VIN

+4VIN

+4VIN

+4VIN

A A A

+ 8V A + 4V OU T

+4VOUT

+8VA

+4VIN

A

A

A

+D 3

D

D

+4VIN

+4VIN

+D 3

+4VIN

+4VOUT

D

+D 3

D

D

+4VOUT +4VOUT

A

+4VOUT+4VOUT +4VOUT

D

D

D

D

D

A D

JK6HEC2392-01-150

2

13

45

FL1DSS310-91D223S

D1SB07-03N-AA

1 2

D21SR154-400

1

2

CN1TP

11

CN2TP

11

SW19HSW2022-010010

Q22SC2235Y

3

12

C26470/16

C270.1

R19680

C24470/16

C18220/16

C190.1

R1812K

R1710K

C250.1

R110K

C10.1_FILM

L1BLM21A601SPT

R21M

Q12SK184GR

2

3

1

R310K

R6 47K

R5

10K

C2

0.0022

R447K

L2BLM21A601SPT

C522/16

C922/16

IC4

TC74HC4052AF

3Y4

2Y2

1Y5

0Y1

3X11

2X15

1X14

0X12

YCOM3

XCOM13

INH6

B9

A10

VEE7

VCC16

GND8

C590.0022

C5822/16

R39 12K

R37 12KR38 12KC64220P

R36 68KC6622/16

R40100K

R471K

R461K

L4BLM21A601SPT

C6922/16

R45100K

R491K

R481K

L5BLM21A601SPT

R5147K

R5433 1/2W

R50 4.7K

R5933 1/2W

L7BLM21A601SPT

Q52SK208Y

3

1

2

Q42SK208Y

3

1

2

D31SS301

1

2

3

R2647K

C370.1

Q6RN1307

1

2

3

R251M

Q82SA1586GR

1

3

2R62100

R6310K

D51SS352

1

2

C70

47/16

R11 18K

R10

10K

C6

0.0022

R947K

R15

10K

R16 18KR1447K

C10

0.0022

C11910/25

R13100K

C8220P

R12220

R7220

R8100K

C4220P

C12

0.1

C14

10/25

C230.1

R2447K

+

-

IC9AM5219FP

2

31

C3822/16

C3922/16

IC6S-8520E33MC-BJS

ON/OFF1

VSS2

VOUT3

EXT4

VIN5

C40100/16

C410.1

C42220/16

C430.1

L8 4.7uH L9 47uH

C330.1

C72150P

R53330

R60100K_1%

R6143K_1%

L6BLM21A601SPT

C3022/16

C2922/16

C2822/16

R21 150K_1%

R20 33K_1%

C3112P

+

-

IC3BM5219FP

6

57

R22 33K_1%

C32 12P

+

-

IC3AM5219FP

2

31

R23 10K_1%

+

-

IC10AM5216FP

2

31

+

-IC3CM5219FP

8

4

+

-IC9CM5219FP

8

4

+

-IC10CM5216FP

8

4

+

-

IC1AM5218AFP

2

31

+

-

IC2AM5219FP

2

31

+

-

IC2BM5219FP

6

57

+

-

IC1BM5218AFP

6

57

+

-

IC2CM5219FP

8

4

+

-

IC1CM5218FP

8

4

C127220/16

C1280.1

R9412K

R9310K

R100 100K

C130220P

C132220P

Q92SC4213A

1

2

3

Q102SC4213A

1

2

3

Q112SC4213A

1

2

3

Q122SC4213A

1

2

3

R1084.7K

R1094.7K

R1011K

R1021K

R891M

D4MA720

1

3

R99 100K

Q3RN1307

1

2

3

JK1HTJ-064-121

1

23

JK3HTJ-064-121

1

23

JK4HTJ-064-121

1

23

C3 22/16

C7 22/16

C2122/16

C2022/16

R95100KR96100KR147100KR146100K

JK2HSJ0857-01-1210

1

23

L3BLM21A601SPT

JK5HSJ0857-01-1210

1

23 C50

10/25

C5 1 2 2/1 6

C4710/25

C4510/25

C5 5 2 2/1 6

R29 100KR31 100K

R97 100KR98 100K

C22220/16

D171SS352

1

3

R 82 10

IC7AK4552VT

DEM06

SDTO8

LIN2

RIN1

VD5

DEM17

SDTI9

VCOM14

LOUT15

PDN13

LRCK10

MCLK11

ROUT16

BCLK12

VA4

VSS3

R3010K

C1350.0022

C620.0022

C6122/16

R44 12K

R42 12KR43 12KC67220P

R41 68K

R5647K

R55 4.7K+

-

IC9BM5219FP

6

57

C74150P

R58330

+

-

IC10BM5216FP

6

57

R3310K

C1360.0022

L11BLM21A601SPT

Q7CPH6302

3

4 1

D23 1SS352 1 2D24 1SS352 1 2D33 1SS352

12D32 1SS352

12

C490.1

C460.1

C440.1

C480.0022

L12BLM21A601SPT

BATTERY

1.5V x 61

2

R300 100

AUX

MUTE

BATT

SAMPLER

MCK

BCKLRCKDADATA

ADDATA

RES

A D

L14 BLM21A601SP

or

M5218AFP

orM5218AFP

orM5218AFP

orM5218AFP

orM5218AFP

orM5218AFP

*S/No. AO76100-Up

/ (MAIN BOARD)

Boss ME-33 Service Notes

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