NAD C 372 Service Manual page 6

CB301
5PIN
RCA4C TO LEFT POWER AMP
MAIN RIN
BG_O
R126
100K
RCA4D
MAIN LIN
R226
100K
6
RCA1A R101 4
DISC 470 MF
5
RL5B
C101
R102
100p
1M
6
4
R103
470 MF
5
RL6B
CD
C102
RCA1C R104
100p
1M
6
R105 4
470 MF 5
RL7B
VIDEO
C103
RCA1E R106
100p
1M
6
R107 4
470 MF 5
RL8B
AUX
C104
RCA2A R108
100p
1M
6 R119
4
R109
220 MF
470 MF
5
RL9B
TUNER
C105
RCA2C R110
100p
1M
6
4
R111
470 MF 5
RL10B
TAPE2
C106
R112
RCA2E
100p
1M
RL11B
6
R113 4
470 MF 5
REC2
C107
RCA3A R114
100p
1M
6
R115 4
470 MF 5
RL12B
TAPE1
C108
RCA3C R116
100p
1M
R117
1M C109
REC1
100p
R118
RCA3E
470 MF
RCA4A
RCA4B
PREOUT1 PREOUT 1
RCA4E RCA4F
PREOUT 2 PREOUT 2
3
RCA1B
DISC R201 1
470 MF 2
RL5A
C201
R202
100p
1M
3
RCA1D
1
CD
R203 2
RL6A
470 MF
C202
R204
100p
3 RL7A
1M
RCA1F 1
R205
VIDEO 2
470 MF
C203
R206
100p R219
RL8A
3
220 MF
1M
RCA2B 1
R207
AUX 2
470 MF
C204
R208
100p
RL9A
3
1M
RCA2D
1
TUNER R209 2
470 MF
C205
R210
100p
3
RL10A
RCA2F
1M
1
TAPE2
R211 2
470 MF
R212
C206
100p 3 RL11A
1M
RCA3B 1
R213
REC2 2
470 MF
R214 C207
100p 3
RL12A
1M
RCA3D 1
R215
TAPE1 2
470 MF
C208
R216
100P
1M
R218
1M
RCA3F R217 C209
REC1 470 MF 100P
JIRA
R753
R798
100
IR IN
330
JIRB
C786
10n/63V
IR OUT
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CB401
6PIN
TO RIGHT POWER AMP
BG_I
BG_S
M102
C111
C372 PREAMP MODULE
5
22N RL2B
PE
4
6
R124
75/FS 0.5W
R127
-V34 +V34
200
R123
C112
22K
220u
C211
R121 R120 R221
562 562
100 8.2P
C212
2
RL2A
22N
1
3
PE
R223
75/FS 0.5W
R227
200
R222
C213
22K
220u
RL12C RL11C RL10C RL9C RL8C RL7C RL6C
12V 12V 12V 12V 12V 12V
12V
D736 D735 D734 D733 D732 D731
1N4148 1N4148 1N4148
1N4148 1N4148 1N4148
IRMUTE
PR
SP B
SP A
MAIN ON
BG_S
-V34 +12V
BG_I BG_O
R12 R11
22K 10K
SW3B SW3A SW2B
R13
10K SOFT
K369
B649 A970
D G S
E C B
E C B
2SK369
2SA872
2SB649
2SA1015
2SD669
2SC1815
CD4094
IC902: Z86C0812PSC
2 D
1 18
QS2 10
PORT2/4 PORT2/3
8-STAGE SHIFT REGISTER
3 CP
2 17
PORT2/5 PORT2/2
9
QS1
3 16
PORT2/6 PORT2/1
4 15
PORT2/7 PORT2/0
1 STR 8-BIT STORAGE REGISTER
5 14
VCC GND
6 13
VCC 16
XTAL2 PORT0/2
7 12
XTAL1 PORT0/1
8
15 OE 3-STATE OUTPUTS GND
8 11
PORT3/1 PORT0/0
9 10
QP0 QP1 QP2 QP3 QP4 QP5 QP6 QP7
PORT3/2 PORT3/3
4 5 6 7 14 13 12 11
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CB501 CZ501
L buff out TONE-LIN C502
1 1
GND 10n
2 2
R buff out
3 3 TONE RIN
+34V C501
4 4 +34V
-34V -34V
5 5 220u/25
Lout TONE LOUT
6 6
GND C601
7 7
Rout TONE ROUT 220u/25
8 8
8PIN 8PIN
C602
10n
-34V +34V
+V34 -V34
M501
RV5A
1K
C372 PREAMP MODULE
C113
C114
220P
220P
-34V +34V
R511 R609
RV5B R515 R615
1K
10K 10K
C511
C214
44P
C215
R509 R513
220P
220P
100
10M
R514 R614
1.6 MF 1.6 MF
MD1C
TONE&VOL BAL
+12V
RL5C
12V
TO PHONE BOARD CZ706
D730
1N4148
CB906 CZ906
DISC
DISC
1 1
CD CD
2 2
VIDEO
VIDEO
3 3
AUX
AUX C905
4 4
TUNER
TUNER 47uF/25V
5 5
TAPE2
TAPE2
6 6
TAPE1
TAPE1
7 7
IRMUTE P ON/OFF
IRMUTE
8 8
PR PR
9 9
V34R V34R
10 10
10PIN 10PIN
V34R CB907 CZ907
B SPEAKER ON
B SPEAKER ON
1 1
A SPEAKER ON K905 CD K902 TUNER
A SPEAKER ON
2 2
+5V
3 3
IR OUT
IR out
4 4
MAIN ON P12V K906 AUX
5 5 K903 TAPE1
IR IN
IR IN
6 6
CLLED CLLED
7 7 15
+12V K907VIDEO
8 8 K904 TAPE2
BRIDGELED BRLED
9 9
10 10
V5 +12V +5V V34R +12V
10PIN 10PIN
SW3C
BRIGDE
DISC CD
C906 C907
10n 10n
Q901 Q902
C1815 C1815
R922 R920
4K7 4K7
IS1U621L
R921 R919
4K7 4K7
S G V DI C
74LS00
1 14
VCC
2 13
3 12
4 11
5 10
LD905 LD906
LD901 LD902 LD903 LD904
6 9 AUX TUNER TAPE2
DISC CD VIDEO
7 GND 8
GREEN GREEN GREEN GREEN
GREEN GREEN
R801
1K
Q801
R506 Q802
R501 R504 2SA1312
1K5 MF 1% 390 MF 1% 3K32 MF 1% 2SC3324
R802
1K Q803
C503 C507 C801 2SC2983
0.22u 5% 22n 2% /2SD1815
RV3A RV4A
20KA
20K MN 47pF
RV2A RV1A R803
1K5
10KA 10KA R507 C802
750 MF 1% 1N
C508
0.1u 2%
C504 R503 R510 R809
1K
R502 0.97u 5% 5K1 15K
390 MF 1% R505 Q804
180 1% 2SK209
C805
R810
SW4B
C509
4
OFF
18K
470P
5 22p
DEFEAT
6
ON
R821
220
R805
1M
R601 R604 R606
3K32 MF 1%
1K5 MF 1% 390 MF 1%
C372 PREAMP MODULE
C607
C603
22n 2% 5V
0.22u 5%
R521
RV2B RV1B
10KA 10KA R607 2K2
750 MF 1% A1015
RV3B RV4B
20KA 20K MN
C522
C608 R520
0.1u
0.1u 2% 2K2
C604 R603 R610
R602 0.97u 5% 5K1 15K
390 MF 1% R605
180 1%
SW4A
C609
1
C1815
470P OFF
2
DEFEAT
3
ON
R900
IR OUT IR IN
R941
+5V R901 1K
+5V R938 R902 +5V
10K
R937
200 330 1K
Q914
R943
C1815 4K7 10K
+5V
Q915 Q916 C901
A1015 C1815 0.1u
IC902
Z86C0812PSC
18 1
IC906
P23 P24
17 2 8 1 +5V
P22 P25 Vcc NC
16 3 7 2
P21 P26 NC NC
15 4 6 3
P20 P27 SCL NC
14 5 5 4
+5V GND VCC SDA Vss
13 6
P02 X2
12 7
24C00
K908 P01 X1
11 8
R940 R906 R939 P00 P31
B 10 9
10K 10K 10K P33 P32
+5V
R931
K901 DISC
10K
C903 C902
K909 20P X901 20P
A 12MHz
REMOTE
9
Q909
C1815
VIDEO AUX TUNER TAPE2 TAPE1 A SPEAKER ON B SPEAKER ON
C908 C909 C910 C911 C912 C913 C914
10n 10n 10n 10n 10n 10n 10n
Q903 Q904 Q905 Q906 Q907 Q908
C1815 C1815 C1815 C1815 C1815 C1815
R918 R916 R914 R912 R910 R908 R904
4K7 4K7 4K7 4K7 4K7 4K7 4K7
R917 R915 R913 R911 R909 R907 R905
4K7 4K7 4K7 4K7 4K7 4K7 4K7
VI AU TU T2 T1 A B
0
D908
V34R
PR R928
1N4148
+5V
D909
+5V 1N4148
R930 R926
3
6K8
R927 R933 R934
22
D910
330 2K2 820
BRLED
1N4148
P ON/OFF
LD911
LD907 D906
BRIDGE
R929 1N4148
TAPE1
22K
D911
CLLED
1N4148
Q912
Q910
LD912
C1815 C1815
LD908 LD909 LED910
SOFT
MUTE blink LED2
B
A R903
1K
LED BOARD
+12V
GREEN
VCC VCC
R811
1K
C806 C807
0.1uF 0.1uF Q807
Q808 2SA1312
2SC3324
R812
1K
Q811
R807 R816 2SC2983 C803
560 560 /2SD1815
47pF
R13
R804 R819 1K5
C804
10
10 1N
R817
1K
Q809
2SK209
VEE VEE
R818
18K
C809 C10 C808
0.1uF 0.1uF 22p
R822
220
R814
1M
VCC VEE
C372 PREAMP MODULE
P801
10PIN
VOLUME CONTROL
R525
MOTOR
Q501 Q503 2K2
C520 C521
A1015
4u7 4u7
R524
M
2K2
R522 R523
2K2 2K2
Q502 Q504
C1815
VOL-UP
VOL-DN
CB502
4PIN
CZ502
4PIN
+5V
IC901
74LS00
14 1 R935
100
13 2
12 3
11 4
10 5
R936
9 6
100
8 7
+5V C915 +5V
0.1u
IC905 IC904
4094 4094
KEYBOARD
CONTROLLER
R925
10K
+12V
BLINK
R924
D907
4K7
6V8
D912
1N4148 IC903
Q913
IS1U621L
A1015 R944
2K2
+5V
R945
REMOTE
R923 C904
2K2
2K2
10u