NAD CI 940 Service Manual page 10

1.MAIN BOARD (2/2)
J307
2
1
CO N 2
J2005 12V D R 2008
1 N TC
2
3
4
4P IN 3.96-C
N TC
R 2000
CH 1
CH 3
R100
P804B
100K
1
2
3
4
5
6
7
8 R200
9 100K
10
11
10PIN 2.54-C
CH 2
CH 4
Q114
N.I.
C134
R509
R157
N.I. N.I.
N.I.
D502
C503
R505
VS S
N.I.
N.I.
N.I.
R506
+15V
N.I.
D503
R507
VCC
N.I.
N.I.
R508
-15V
N.I.
SENSE DEFEAT
R805
6 3
10K
5 2
4 1
Protect
D802
4.7V
+12V TRIG IN
J801 R801
1
2
10K
3
4
5
PHONEJACK STEREO SW R802
10K
SP B
SP A
10K R825
R826
P802B
10K
1 AC OFF
2
3
4
5
6
7
STBY
8PIN2.54-C
+
C103
10uF
R107
10K
R102
10K
/6.3V
R103
22K
D101
1N4148
R104
22K
C101
R101 R108
470 100
10uF
C102
C124
220uF /16V
470pF /1KV
R105
470
D102
1000uF /10
4.7V
+5V
C811
B R ID GE
R106
Input Mute STEREO POSITION
3.3K
S 501
4 1
Q115
N.I. 5 2
6 3
C135
R158
SK-22F03-G6
N.I.
R511
N.I.
10
R257 R258
+
N.I.
C203
N.I.
R201 10uF
C235
C234 470
R207
N.I. N.I.
R510
10K
Q214 Q215
N.I.
R202
N.I. N.I.
C504
10K
N.I.
SENSE
R203
22K
C201
D201
+5V
10uF 1N4148
R204
C224
22K
470pF /1KV
R208
100
C202
BUS801
220uF /16V
COPPER STRIPS
R205
Cannot open
470
D202
file
P801B E:\CI940\C245\
Imported
1
C245BEE 4.7V
2
PO W ERA M P
3
R206
V M 1. 0. PR JPC B 3.3K
4
\ Image. bmp
5
6
7
8
9
10
11 VCC
+
P803B
10PIN2.54-C
C805
C807
1
F801
4700uF 100nF
2
+15V
3
MF-R075/90U-0-99
4
+
C806
C808
F802 4PIN3.96-C 4700uF
100nF
-15V
VS S
MF-R075/90U-0-99
R123
47 /1/2W
R114 R124
+
330 C111 R119 4.7K
C114
220uF 82
R113 47nF
Q103
2SA970
1K
R125
4.7K
R111
Q104
2SA970
390
R130
C107
Q106 D103
2SA1015 1N4148
R126
47pF /1KV Q116
1.2K
R112 2SD669A
Q105
2SC2240 D104 R145
100
1N4148
+ C112
8.2K
C104
47pF /1KV
Q107
10uF
2SA1360 R127
866
R115
1K R122
100K
Q102
2SA970 CW
C105
100pF /1KV
L101
Q101 RV101
2
2SC2240
C108 200
100uH
10pF /1KV
R109 R117 R120
2.2K 100 4.3K /1/4W/1%
+15V
R118
R110 C109 180 /1%
IC501B
2.2K 100nF R128
TL082CP
1K
R121
5
+
7
1meg
R116
6
-
C113
1meg
C110 1uF
C106
100nF
1uF
R129
-15V
1K
R223
47 /1/2W
R214 R224
+
330 C211 R219 4.7K
C214
220uF 82
R213 47nF
Q203
2SA97 0
1K
R225
4.7K
R211
Q204
2SA970
390
R230
C207
Q206 D203
2SA1015 1N4148
R226
47pF /1KV Q216
1.2K
R212 2SD669A
Q205
2SC2240 D204 R245
100
1N4148
+
10K
C204
Q207
10uF
2SA1360 R227
866
R215
1K R222
100K
Q202
2SA970
CW
C205
100pF /1KV
L201
Q201 RV201
2
2SC2240
C208 200
100uH
10pF /1KV
R209 R217 R220
2.2K 100 4.3K /1/4W/1%
R210
2.2K
IC501A
R221
TL082CP
1meg R228
3
+
1 K
1
R216 R218
2 C213
-
1uF
C206
1meg 180 /1%
1uF
R229
1K
G8G1
All Poly este r capacito rs are 63V unless note d.
R822
1
All Elec. capacito rs are 50V unless note d.
100
All Zener diodes are 1/2 W unless note d.
GROUND SOLDER TAP
C841
All Resisto r are 1/6 W unless note d.
100nF
12
+
R503
C505
4.7K
R131 4.7uF
C115
51 /1W
Q502
2N5401
47uF /63V
Q111
R140
2SA2121
22K
C122
120pF /1KV
R136
Q109
2SD669A
39 1K
R135
Q113
2N5551
1K
Q108
KSC2690
R137 R143
R132
22K
0.068 /3W
3.3
+
C117
10uF
D105
R133
1N4148
0.068 /3W
R138
1K
Q110
2SB649A
R139
1K
C123
120pF /1KV
/1W R141
Q112
22K
2SC5949
C116
R142
220uF /63V D106
R134 56K
1N4148
51 /1W
/1W
R231
C215
51 /1W
R242
56K
47uF /63V
Q211
R240
2SA2121
22K
C222
120pF /1KV
R236
Q209
2SD669A
39 1K
R235
1K Q213
Q208
2N5551
KSC2690
L202
R237
R232
22K
0.068 /3W
1uH
+
C217
R243
10uF
3.3 /1/2W
D205
R233 R244
1N4148
0.068 /3W 10 /2W
C219
R238
100nF
1K
Q210
2SB649A
R239
C223
1K
120pF /1KV Q212
/1W 2SC5949 R241
C216
22K
D206
R234
220uF /63V
51 /1W
1N4148
/1W
VCC
C120
100nF
TEST POINT
TP101
1
2
3
4
CON2.54X4
RL501A
JQX-115F024-2HS4AF JA04
/1/2W
4 1
L102
3 2
3
1uH
4
R144
4PIN/5MM
10 /2W
C118
22nF
C119
100nF
R504
O/C
O/C
10K
HS101
Cannot open
fi le
E :\CI9 40\C2
45\Imp ort ed
C245B E E
C121
PO W E RA M
HEATSINK
100nF
P
FOR Q108/Q109/Q110
V M 1.0.PR JP
CB\ Image. b
VS S
mp
DC Fault
DC Fault
VCC
C220
100nF
TEST POINT
TP201
1
2
3
4
CON2.54X4
RL501B
JQX-115F024-2HS4AF
6
5
C218
22nF
H S 201
Cannot open
fi le
E :\CI9 40\C2
45\Imp ort ed
C245B E E
PO W E RA M
HEATSINK
C221
P
FOR Q208/Q209/Q210
100nF
V M 1.0.PR JP
CB \Imag e.b
VS S
mp