JVC KS-AX4700 Service Manual page 13

Q Q
3 7 6 3 1 5 1 5 0
MAIN PCB [2/2] circuit diagrams
7
+15V
C191
R-IN
473P
JA01-A
DJB-552S C101 R102 C105
U101A
8
4.7/50V 21.5KF 100P NJM2068LD
3
6 +
1
R101 R108
2
R103 4
22KF 1K
22KF
R106
C102
24KF
4.7/50V
R109
C106 1.3KF
22P
R105 C104
C291
24KF 22P
473P
-15V
5
C100 R104 C103
330/25V
470 103P
"NP"
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
L-IN
JA01-B
U101-B
DJB-552S C201
R202 NJM2068LD R208
C205
VR101B
4.7/50V
21.5KF 1K
100P
5
20KB
C202
R203 7
6
4.7/50V
22KF
R206 24KF
R201
3 22KF
R209
C204
R205
C206
1.3KF
22P
24KF
22P
2
w w w
1
.
A B
KS-AX4700
+15V
C114 104(M)
+15V +15V
8
3
C192 C193
R121 R122
VR101A
473P 473P 2
30K 30K
20KB
U102A U103A
C107 R113
8 NJM2068LD C115
8 NJM2068LD
4.7/50V 1K
3 473(M)
3
1
2 1
4 R114
2
R112
1K
R123 30K
30KF C111 47P
R110
15KF
R111 C108
VR102A
R115 R116
NJM2068LD
11KF 68P
20KB
1K 20K
5
C112 C117
C116
C292
6
224(M) 473(M) 473(M)
473P R118 R117
5.6K 100K
-15V R124
C113 62K
U103B
183(M)
NJM2068LD -15V
5
R119
7
6
470K 4
C293
473P
-15V
BASS BOOST(50Hz,0-12dB/oct) LPF-FLAT-HPF
(80Hz,12dB/oct)
+15V
C214
104(M)
+15V
8
3
C208 33P
C195
R221 R222
473P
2
30K 30K
R212 56KF
R210
U105A
R213
15KF C215
NJM2068LD
1K 8
6 473(M)
3
C207 7
1
5
R214
4.7/50V 2
U102B 1K
R223 30K
R211 C211 47P
12K
U106B
VR102B
R215 R216
NJM2068LD
20KB
1K 20K
5
R217
C216 C217
C212
100K
473(M) 473(M) 6
R218
224(M) 4
5.6K
R224
62K
C213 U105B
183(M) NJM2068LD
-15V
5
R219 7
6
470K 4
C295
473P
-15V
x a o
y
i
C D
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8
+15V
R137
R133
1K
1K
C133
R134
10/16V Q102
5.6K Q101
C3198GR
C3198GR
C194
473P
R138 R139
1
22 22
U104A C130
R131 C131
SW101A
NJM2068LD LPF 4.7/50V
5.6KF 4.7/50V
JSS2319
FLAT
HPF
U104B
R140
R141
22
22
R132 C132
7
22KF 100P
4
Q103
C294
A1266GR
A1266GR
473P
R135
5.6K
R142
C134
1K
10/16V R136
Q100
1K
K117
R130 -15V
10K
C139
MUTE
100/16V
+15V
R230
10K
Q Q
3 7 6 3
Q200
K117
R237
R233
1K
1K
C233
R234
10/16V
Q201
5.6K
C3198GR
R238 R239
1
22 22
U106A
C231
C230
LPF
NJM2068LD
4.7/50V
4.7/50V
FLAT
HPF
R231
SW101B 5.6KF
JSS2319
R232
R240 R241
22KF
C232
22 22
100P
7
Q203
Q204
A1266GR
A1266GR
R235
5.6K
R242
1K
C234
R236
10/16V
1K
R248
-15V
PPS039-01
560F
C239
100/16V
Caution
u 1 6 3
If electricity is connected during disassembly, it must be a no load current. If it is load
current, be sure to attach a heat sink to the power-amp IC. This will be damaged if the
.
above precautions are not followed, as it does not have a sub heat sink attached to it.
E F
2-4
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2 4
9 9
R143
Q108
Q109
47
C2690A
C2690A
Q105
A1023Y
C135
Q112
150P
D998
Q116
R155
C3200GR
1.5K
Q113
R156
D998
15K
R144 R151 R152 D101
C140
3.9K 0.1/3W 0.1/3W 1N4148
150P
C136
R149 R150
473(M)
220 220
Q107
R153 R154
C3200GR
0.1/3W 0.1/3W
R145
2.7K
Q114
B778
Q115
Q104
C137
B778
150P
Q106
C1027Y
R146 Q110 Q111
47 A1220A A1220A
R147 12KF
R148
560F
C138 56P
1 5 1 5 0 8 9 2
R243
Q208 Q209
47
C2690A C2690A
Q205
A1023Y
Q202
C235 Q212
C3198GR
150P D998
Q216
R255
C3200GR
1.5K
Q213
D998 R256
15K
R244 D201
R251 R252
C240
3.9K 0.1/3W 0.1/3W 1N4148
150P
C236
R249 R250
473(M)
220 220
Q207
R254 R253
C3200GR
0.1/3W 0.1/3W
R245
2.7K
Q215
B778
Q214
C237
B778
150P
Q206
C1027Y
R246 Q210 Q211
47 A1220A A1220A
R247 12KF
C238 56P
Indicates main signal path
m
c o
G H I
2
8 9 9
PROTECTION
R159 R158
680/2W 4.7/0.5W
C141
104(M)
P2
TM0009-00
Q117 Q217
C3198GR
C3198GR
R157
56K
C142
R257
104P
56K C151
4 9 8 2 9 9
220/16V
R258
R259
4.7/0.5W
680/2W
C241
104(M)
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