Nad c320bee
4
NAD SERVICE MANUAL C 320BEE STEREO AMPLIFIER C 320BEE STEREO AMPLIFIER
description
service manual
Transcript of Nad c320bee
NADSE
RVI
CE
MA
NU
AL
C 320BEESTEREOAMPLIFIERC
320
BE
EST
EREO
AM
PL
IFIE
R
P
r
e
l
i
m
i
n
a
r
y
JK41
1 2 3 4 5
CZ4
4PH
ON
ES S
OC
KET
N8C
320D
03
AC P
OW
ER C
OR
D C43
54n
7/40
0V
SW42
POW
ER S
WIT
CH T4
01
123
CZ4
11
RED
GR
Y
BLK
OR
G
VIO
! !
!C
4110
n/25
0V
D41
KBU
8D
C42
10n/
250V
D45
KBU
8D
C41
715
000u
F/50
V 10
%
C41
815
000u
F/50
V 10
%
Q41
8C
1815
Q41
7A1
015
D43
1TI
C11
6D
D43
2TI
C11
6D
R45
81KR
463
22K
R46
110
0R
462
1K
R46
0
1K R45
9
1K
R46
510
0
R46
4
22K
R43
10.
05/3
W 5
% C
E R43
222
0
Q41
0A1
015 Q
49A1
015
R43
42K
2
R43
32M
2
Q41
9A1
015
Q42
0C
1815
R46
64K
7
D41
3
1N40
02
R44
4
22K
C42
333
00u/
50V
C42
422
00u/
50V
1 2 3 4
CZ4
8
1234567
CZ4
6D
426
1N40
02
D42
41N
4002
D42
71N
4002
D42
51N
4002
1 2 3
CB4
10
!
!!
!!
C5
10n
TO C
HAS
SIS
F41
F42
F44
F43!!! !
!
!
H1
H2L1 L2G
GN
DG
ND
+46V
-46V
-37V
+37V
I-VAC D
ET.
TRIG
NAD
C32
0 R
ECTI
FIER
S C
IR.
10%
10%
R12
/2
22K
C4
10n
O/P
REL
AY
L O
UT
R O
UT
D41
2
1N41
48
BIN
DIN
G P
OST
S
R44
6
56K
R44
5
56K
C42
233
0u/1
6VC
421
4u7/
50V
C43
20.
22u
R44
315
0 1/
2W F
S
R44
1
15K
R44
256
KC
420
100u
/16V
PRO
TEC
TIO
N C
IR.
0V
0V+3.2
5V
+2.1
6V
0V 0V
+2.0
V
+18V
+46V
R47
8
100K
12 3
IC43
ATL
082D
R48
06K
2
R48
24K
7
R47
9
100K
C42
810
u/25
V
C42
510
u/25
VR
470
10K
R47
110
K
D41
81N
4148
D41
71N
4148
R47
7
47K
R48
3
330K
R47
347
K
R47
247
0K
C42
610
u/25
V
C42
910
u/25
V
R48
8
39K
R48
7
39K
D42
0
1N41
48
D41
91N
4148
R48
656
0K
R47
41K
C43
010
u/25
V
R47
61K
C43
110
u/25
VR
490
100K
R49
1
100K
4
567
8
IC43
BTL
082D
+18V
+18V
-18V
1 2 3 4 5 6 7CB4
7
5PIN
-37V
+37V
1 2 3 4CB4
9
4PIN
-46V
+46V
1 2 3 4 5CB4
5
5PIN
R45
322
0/2W
FP
R45
222
0/2W
FP
R43
822
K R43
9T0
=90
degr
ee C
Q41
2C
1815
POSI
STO
R
+18V
R45
33/0
.5W
FS
R41
680
R43
680
R47
680
C43
220u
/50VC
413
220u
/35V
Q41
2SD
669A C45
22p
R49
680
R41
168
0
R41
368
0D49
18V
C47
47u/
25V
C49
47u/
25V
R41
42K
2
R46
33 /
0.5W
FS
R42 680
R44
680
R48
680
C44
220u
/50V
C41
422
0u/3
5VQ43
C18
15
C46
22p
R41
0
680
C48
10u/
25V
C41
047
u/25
VR
412
2K
Q42
2SB6
49A
Q44
A101
5
C41
10.
1u 1
0%
C41
20.
1u 1
0%
R42
82K
2
R42
95K
1
MF
MF
-37V+3
7V
NAD
C32
0 SU
PPLY
CIR
.
63V
63V
+18V
-18V
Q41
1A1
015
R43
656
K
R43
510
0K
R48
910
0KR
457
220K
R45
133
0K
D42
31N
4148
R44
8
100K
C43
422
n/63
V
R42
722
/1W
FP
Q41
3D
669
Q41
4C
1815
+37V
+12V
+18V
+12V
Prot
ectio
n
Soft
Ind
+5.6
V+1
8V-1
8V+5
.6V
+18V
-18V
+12V
Rem
ote
Mut
e
Pre
Mut
e
5.6V
Stan
dby
STA
ND
BY
R11
470
C11
10u/
16V
R15
22KR
14
100
Q12
A970
Q13
C22
40
C12
470p
R19
39K
R11
182 R
112
82 R11
039
k C14
10u/
35V
C13
10u/
35V
Q14 C22
40
Q15
A970
R11
5
33 R11
6
33
Q16
A101
5
Q17 C18
15
R11
9
47 R12
082
C18
22p C
19 22p
C15
220u
F/63
V
C16
220u
F/63
V
Q11
0B6
49
Q11
1D
669
R124
3.3/0.5W FP
R125
3.3/0.5W FP
R128
330/0.5W FP
R129
330/0.5W FP
R12
3
47K
C11
047
u/25
V
C11
147
u/25
VR12
6
2K7/
2W F
P
R12
7
2K7/
2W
R13
0
82/1
W
R13
1
82/1
W
R14
2
22 R14
3
22
R13
6
10
R13
7
10
Q11
2D
669 Q
115
2SC
5200
Q11
42S
A194
3
Q11
3B6
49
R14
40.
068/
3W C
E
R14
50.
068/
3W C
E
R13
947
0
VR12
300
R1531K2/2W 5% FP
R149150/1/4W 1% MF
C1162200u/6.3V
C11
70.
1u 1
0% 6
3V
L11
1uH
R15
0
1/1W
R15
110
/1W
FS
C11
80.
1u 1
0% 6
3V
C11
922
n 10
% 6
3V
C11
50.
1u 1
0% 6
3V
C11
40.
1u 1
0%
Q19
D66
7
Q18
B647
D13
1N41
48
D15
1N41
48
D14
1N41
48
D16
1N41
48
R12
1
100K R12
210
0K
R21
470
C21
10u/
16V
R25
22KR
24
100
Q22
A970
Q23
C22
40
C22
470p
R29
39k
R21
182 R
212
82 R21
039
k C24
10u/
35V
C23
10u/
35V
Q24 C22
40
Q25
A970
R21
5
33 R21
6
33
R20
382
Q26
A101
5
Q27 C18
15
R21
9
47 R22
082
C28
22p
C29 22p
C25
220u
F/63
V
C26
220u
F/63
V
Q21
0B6
49
Q21
1D
669
R224
3.3/0.5W FP
R225
3.3/0.5W
R228
330/0.5W FP
R229
330/0.5W
R22
3
47K
C21
047
u/25
V
C21
147
u/25
V
R22
6
2K7/
2W
R22
7
2K7/
2W
R23
0
82/1
W
R23
182
/1W
R24
2
22 R24
3
22
R23
6
10
R23
710
Q21
2D
669 Q
215
2SC
5200
Q21
42S
A194
3
Q21
3B6
49
R24
40.
068/
3W C
E
R24
50.
068/
3W C
E
R23
947
0
VR22
300
R2531K2/2W 5% FP
R249150 1/4 1% MF
C2162200u/6.3V
C21
70.
1u 1
0% 6
3V
L21
1uH
R25
01/
1W F
P
R25
110
/1W
FS
C21
80.
1u 1
0%C
219
22n
10%
C21
50.
1u 1
0%
C21
40.
1u 1
0%
TP1
Q29
D66
7
Q28 B6
47
D23
1N41
48
D25
1N41
48
D24
1N41
48
D26
1N41
48
R22
110
0K
R22
210
0K
R12
220K
R22
220K
C21
247
0p
C21
347
0pC11
247
0p
C11
347
0p
R14
7
1K
Q11
C18
15
Q12
/1A1
015
R15
222
K
R12
/16K
8
R14
8
15K
C12
022
n 10
%
D17
1N41
48
R24
7
1K
R24
8
15K
R25
222
K
Q21
C18
15
C22
022
n 10
%
D27
1N41
48
MAI
N-IN
L-C
H
MAI
N-IN
R-C
H
R1462K7/1W 1% MF
R2462K7/1W 1% MF
R15
4
10
R15
5
10
R25
4
10
R25
5
10
Q11
6KS
C26
90
Q21
6KS
C26
90
R13
839
0
R23
839
0
FP
FP
FP
FS
FS
FS
FS
Q47
A101
5
Q45
A101
5Q
46C
1815
R41
710
0
R41
910
0
R41
810
0
R41
610
0C41
510
u/25
V
C41
610
u/25
V
R42
21.
3K
R42
31.
3K
R42
41.
3K
R42
51.
3K
R42
0
36K
R42
136
KD
411
20V
D41
0
20V
1 2 3S41A
4 5 6
S41B
ON
OFF
TP4
TP3
TP2
FS
FS
FP FP
FP
FS
FS
NAD
C32
0BEE
PO
WER
AM
P C
IR.
63V
63V
63V
63V
63V
63V
63V
MF
MF
MF
Q20
3C
2240
C20
310
0uF/
16V
R20
1
39K
R20
682
R20
539
k
C20
410
0uF/
16V
Q20
4A9
70
-18V
+18V
+18V
-18V
+46V
-46V
+46V
-46V
+46V
-46V
R20
222
0k
R20
422
0k
D21
4.7V
D22
4.7V
D11
4.7V
D12
4.7V
R10
382Q10
3C
2240
C10
310
0uF/
16V
R10
1
39k
R10
682 Q10
4A9
70
C10
410
0uF/
16V
R10
5
39kR
104
220k
R10
222
0k
Q20
1C
2240
Q20
2A9
70
R20
7
39 R20
8
39
Q10
1C
2240
Q10
2A9
70
R10
8
39R10
7
39
VR11
100
VR21
100
Q48
C18
15
1 2
3
4
5
6
7
8
IC44
UPC
1237
HA
12
34
56
RL1
2/1
F1AA
012V
1 2 3 4
SPKO
UT
SPKO
UT
-46V
R40
14K
7
D40
31N
4148
STA
ND
BY
D42
1N41
48
D43
1N41
48
R43
747
K
STA
ND
BY
1
2
3
IC41
LM78
05
D40
1D
B104
D42
9
1N41
48C
433
2200
uF
C43
610
0uF
C17
0.1u
F/63
V
C27
0.1u
F/63
V
C12
/147
uF/2
5V
Q42
1C
1815
R46
910
KR
468
22K
R46
7T0
=80
degr
ee C
D42
81N
4148
+18V
1234567
CB4
1
CO
N7
1234567
CZ4
1
CO
N7
1 2 3
CB4
2
CO
N3
1 2 3
CZ4
2
CO
N3
1 2 3
CB4
11
CO
N3
1 2 3
CZ4
11
CO
N3
F45
500m
A/25
0V
R44
02K
2
+18V
6.3A
/250
V X3
C32
0BEE
ISC
CIR
CU
IT
BC
E2S
C52
002S
A194
3
EC
B2S
A970
2SC
2240
2SA1
015
2SC
1815
TEXT
TEXT
TEXT
EC
B2S
B649
2SD
669
1 2 3 45678
OU
T A
-IN A
+IN
A V-
V+ OU
T B
-IN B
+IN
B
TL08
2D
INO
UT
GN
D
LM78
05
UPC
1237
12
34
56
78
TIC
116D
AK
G
2SK369
GD S1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9
1:
GND
+18V
-18V
LOUT
ROUTRIN-RIN+
LIN+LIN-
2:3:4:5:6:7:8:9:
PRE-AMP MODULE
MAIN POTALPS RK16812MG
DISC
CD
VIDEO
AUX
TUNER
TAPE2
REC1
TAPE1
REC2
R31
470
R33
470
R35
470
C31100p
C33100p
C35100p
R37
470
R39
470
R311
470
C37100p
C39100p
C311100p
R313
470
R315
470
R317
470
C313100p
C315100p
C317100p
C3190.1u 10%
C32447u/25
C32347u/25
C325
47u/25
R3213K3 MF
R323750 MF
R319N.I.
R325390 MF
R327180 MF
RT
31A
10K
A RT32A10KA
C32722n 5%
C3290.1u 5%
R3291K5 MF
R331390 MF
C3310.22u 5%
C3330.97u 5%
C335470P
RT33A
20KB
RT34A20K MN1
23
SW31A
456
SW31B
L PRE-OUTQ31K363
C343220p
D3110M
C3391u/16
RL31A
RL32A
RL33A
RL34A
RL35A
RL36A
RL37A
RL38A
DISC
CD
VIDEO
AUX
TUNER
TAPE2
REC1
TAPE1
REC2
R32
470
R34
470
R36
470
C32100p
C34100p
C36100p
R38
470
R310
470
R312
470
C38100p
C310100p
C312100p
R314
470
R316
470
R318
470
C314100p
C316100p
C318100p
RL31B
RL32B
RL33B
RL34B
RL35B
RL36B
RL37B
RL38B
TONE DEFEAT SW
R3334.7K
R335
68
C341
47u/25
C320
0.1
u 1
0%
C32647u/25
R3223K3 MF
R324750 MF
R320N.I.
R326390 MF
R328180 MF
RT
31B
10K
A
RT32B10KA
C32822n 5%
C3300.1u 5%
R3301K5 MF
R332390 MF
C3320.22u 5%
C3340.97u 5%
C336470P
RT33B
20KB
RT34B20K MN
R PRE-OUT
Q32K363
C344220p
D3210M
C340
1u/16
TONE DEFEAT SW
R3344.7K
R336
68
C342
47u/25
R5131K
R5810K
R51110K
R591K
R5121K
R5101K
C554u7/25V
C564u7/25V
Q56C1815
Q55
A1015
Q58C1815
Q57
A1015M
RL31C RL32C RL33C RL34C RL35C RL36CRL37C RL38C
D371N4148
D381N4148
D391N4148
D3101N4148
D3111N4148
D3121N4148
D3131N4148
VOLUME CONROL
MOTOR
BY MOTOR
BY MOTOR
R359
5K
1 M
F
R360
5K
1 M
F
R348100K
R347100K
R341
1M
R342
1M
R343
1M
R339
1M
R338
1M
R337
1M
R346220K
R345220K
R349
1M
R351
1M
R353
1M
R355
1M
R357
1M
R350
1M
R352
1M
R354
1M
R356
1M
R358
1M
12345678
CB34
12345678910
CB31
R4930
123456789
CB32 LO
W N
OIS
E A
MP
MO
DU
LE
123456789
CB33LO
W N
OIS
E A
MP
MO
DU
LE
MF
MF
R1100
C110n
TO CHASSIS
TO THE CHASSIS
C6
10n
R3 100
P8
ON
OFF
OFF
ON
TO CZ52
TO CZ51
L-C
H IN
PU
TS
R-C
H IN
PU
TS
VO
LU
ME
PO
TV
OLU
ME
PO
T
BA
LA
NC
E P
OT
BA
LA
NC
E P
OT
BA
SS
PO
TB
AS
S P
OT
TR
EB
LE
PO
TT
RE
BLE
PO
T
SOFT IND.
CDVIDEO
TUNERAUX
TAP2
TAP1
DISC
REMOTE MUTE
PROTECTION
+5VVOL-VOL+
+12V
IRINIROUT
63V
63V
63V
63V
63V
63V
63V
63V
63V
63V
+5.6V
DIS
C
CD
VID
EO
AU
X
TU
NE
R
TA
P2
TA
P1
+12V
Pre Mute
-18V+18V+5.6V
Soft IndRemote MuteProtection
-18V
+18V
+18V
-18V
+5.6V+18V
-18V
PHONE1B
IR OUT
PHONE1A
IR IN
C3370.1U
C3450.1U
C338
0.1U C3460.1U
C3210.1U
C3220.1U
PHONE2
+12V Trigger
R210 C3
0.1uF
+12V
Standby
STANDBY
C320BEE INPUT SELECT CIRCUIT ON THE MAIN BOARD
C320BEE TONE CONTROL CIRCUIT
RI1
1K
QI12SC1815
RI2
1K
QI22SA1015
RI3
33+5V
J117
+5V
C302220p
C30110uF/50V
P
r
e
l
i
m
i
n
a
r
y
STR1 D2 CLK3 OE15
Q1 4Q2 5Q3 6Q4 7Q5 14Q6 13Q7 12Q8 11
QS 9QS 10
IC54
4094
STR1 D2 CLK3 OE15
Q1 4Q2 5Q3 6Q4 7Q5 14Q6 13Q7 12Q8 11
QS 9QS 10
IC55
4094
C59
22p
C51
022
p
Y51
12M
Hz
C57
10n
C58
0.1u
20%
+5V
C51
10.
1u 2
0%
+5V
CVITUAUT2T1
P21
P22 P
00P
01P
02
P20
DI
S51
VID
EO
S52
AU
X
S54
TA
PE
2
S53
CD
S55
TA
PE
1S
57D
ISC
S56
TU
NE
R
D51
VID
EO
D52
AU
XD
53C
DD
54T
AP
E2
D56
TU
NE
RD
55 TA
PE
1D
57D
ISC
R52
84K
7
R52
910
K
R52
62K
2
R52
72K
2S
OF
T IN
D.
LD41
GR
EE
N
R42
691
0
Q51
6C
1815
R53
3
5K1
C51
100u
/16V
Q51
A10
15D
596V
8
P24
1
P25
2
P26
3
P27
4
VCC
5
X2
6
X1
7
P31
8
P32
9P33
10P00
11P01
12P02
13GND
14P20
15P21
16P22
17P23
18IC
53
MIC
OM
23
1
IC52
IS1U
60L
1 2 3 4 5 6 7 8
CZ
51
1 2 3 4 5 6 7 8 9 10CZ
52
R53
0
15K
Q52
C18
15
R52
470
R51
680
Q59
C18
15
Q51
0C
1815
Q51
1C
1815
Q51
2C
1815
Q51
3C
1815
Q51
4C
1815
Q51
5C
1815
R54
14K
7R
542
4K7
R54
34K
7R
544
4K7
R54
54K
7R
546
4K7
R54
74K
7
C51
410
nC
515
10n
C51
610
nC
517
10n
C51
810
nC
519
10n
C52
010
n
CV
IT
UA
UT
2T
1D
I
CD
VID
EO
TU
NE
RA
UX
TA
P2
TA
P1
DIS
C
CD
VID
EO
TU
NE
RA
UX
TA
P2
TA
P1
DIS
C
R55
4
4K7
R55
3
4K7
R55
2
4K7
R55
1
4K7
R55
0
4K7
R54
9
4K7
R54
8
4K7
NA
D C
320
BE
E K
EY
BO
AR
D
LD42
RE
DG
RE
EN
R55
610
K
R55
710
K
R55
810
K+5V
IR R
EC
EIV
ER
V
S
G
AM
BE
R
RE
MO
TE
MU
TE
PR
OT
EC
TIO
NG
ND
VC
CV
OL-
VO
L+
+12
V
+5V
+5V
+5V
REMOTE MUTE
PROTECTION
VOL+VOL-
SOFT IND.
+12V
VCC
PO
WE
R/P
RO
TE
CT
ION
IN
D.
SO
FT
CLP
PIN
G IN
D.
TO
CH
AS
SIS
TO
CB
31
TO
CB
34
MU
TIN
G B
LIN
K
P9
SH
IELD
ING
VC
CV S G
12
3 12
3
CZ
43 CB
53
Z86
C08
12P
SC
51
3A
W
GR
EE
NG
RE
EN
GR
EE
NG
RE
EN
GR
EE
NG
RE
EN
W9
1
W5
3
W2
56
N8C
320F
08
N8C
320F
06
+5V
Q54
C18
15
R50
12K
2
Q53
C18
15
+12V
Q51
72S
C18
15
R50
347
0
+5V
R50
210
K
NC
1
NC
2
NC
3
Vss
4SDA
5SCL
6NC
7Vcc
8
IC51
24C
01
IR IN
IR O
UT
IR INIR OUT
C52
0.1u
F
+5V
+12V
+12V
+12V
R50
810
K
D51
41N
4148
C8
220p
BA
CK
UP
N.I.
C61
220p
R61
220
R63
1M
Q61
2SK
369
R65
560
2%
R67
1K R69
430
2%
Q63
A97
0
Q67
D66
7
C63
15p
R61
11K
Q64
B64
7R
613
10K
D61
1N41
48
D62
1N41
48
R61
533
C65
0.1u
20%
C66
0.1u
20%
C69
100p
R61
710
R61
910
C62
220p
R62
220
R64
1M
Q62
2SK
369
R66
560
2%
R68 1K R61
043
0 2%
Q65
A97
0
Q68
D66
7
C64
15p
R61
21K
Q66
B64
7R
614
10K
D63
1N41
48
D64
1N41
48
R61
633
C67
0.1u
20%
C68
0.1u
20%
C61
010
0p
R61
810
R62
010
1 2 3 4 5 6 7 8 9
J61
R62
1
120
C61
140
P L
INE
IN M
OD
ULE
GN
D
+18
V
-18V
LOU
T
RO
UT
RIN
-R
IN+
LIN
+LI
N-
PO
RT
2/0
PO
RT
2/1
PO
RT
2/2
PO
RT
2/3
PO
RT
2/4
PO
RT
2/5
PO
RT
2/6
PO
RT
2/7
VC
C
XT
AL2
XT
AL1
PO
RT
3/1
PO
RT
3/2
PO
RT
3/3
PO
RT
0/0
PO
RT
0/1
PO
RT
0/2
GN
D
1 2 3 4 5 6 7 8 9101112131415161718
Z86
C08
12P
SC
IC53
:
D51
0
1N41
48D
511
1N41
48
D51
31N
4148
D51
21N
4148+5V
+5V
R53
10K
R51
410 C
550
0.1u
F
R51
510 C
551
0.1u
F
R51
610 C
552
0.1u
F
C51
20.
1u 2
0%
D51
51N
4148
TO
TH
E C
HA
SIS
TO
TH
E C
HA
SIS
TO
TH
E C
HA
SIS
NO
TE
: R51
4 R
515
R51
6 A
ND
C55
0 C
551
C55
2A
RE
NO
T IN
SE
RT
ED
IN A
H V
ER
SIO
N
C3
20
BE
E P
RE
AM
P M
OD
UL
E
15P
LIN
EO
UT
MO
ULE
ST
R
D CLK
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
QS
QS
OE
GN
D
VC
C
IC54
IC55
: CD
4094
IC51
: 24C
01
NC
NC
NC
NC
VC
C
SC
L
SD
AG
ND
EC
B
2S
A1
01
52S
C18
15T
EX
T2S
K36
9
GD
S
2SD
667
2SB
647
TE
XT
:
1: S
IGN
AL
2: G
ND
3: V
CC
IS1U
60L
51
3A
W
12
31
23
1: R
ED
IND
ICA
TO
R2:
CO
MM
ON
CA
TH
OD
E3:
GR
EE
N IN
DIC
AT
OR
