JVC RX-5050B Service Manual page 9

Audio amp section
LVA10471-1
1
R1131 Q1131
47k
KTC3200/GL
R1127 1k
R1128 1k
R1132 Q1132
47k KTC3200/GL
+VH +VL
C1111 C1113
6800/71 4700/63
CN151
S1 57.1V
5
S2 27.5V
4
To CN251
COM 0V C1115 C1118
3 0.1/160
(LVA10472-1) 0.1/160
S2 -27.4V
2
S1 -56.9V
(SHEET 1)
1
QJK012-051903
C1112 C1114
6800/71 4700/63
-VH -VL
EP101
GND
* MARK LIST
A/UT/US Parts are safety assurance parts.
J/C B/E/EN/EV
/UP
When replacing those parts make
B1005 USE NONE NONE
B1006 USE NONE NONE
sure to use the specified one.
B1007 USE NONE NONE
B1008 USE NONE NONE
B1009 USE NONE NONE
L1351 NONE USE USE
L1352 NONE USE USE
L1353 NONE USE USE
L1354 NONE USE USE
L1355 NONE USE USE
R1370,R1371 NONE USE USE
C1361,C1362 NONE USE USE
NONE USE USE
C1363,C1364
NONE USE USE
C1359,C1377
NONE USE USE
C1360,C1378
NONE USE USE
R1373,R1374
NONE USE USE
C1369,C1370
NONE USE USE
C1373,C1374
C1372,C1375 NONE USE USE
C1371,C1376 NONE USE USE
R1372 NONE USE USE
C1365 NONE USE USE
C1366 NONE USE USE
C1367 NONE NONE NONE
C1368 NONE USE USE
(SHEET 3)
To CN471
(LVA10464-1)
CN171 PW601
QJP001-032101
IC101
STK412-430
!
L/Rch POWER AMP
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
R1101
R1102
C1124 1k
1k
C1123
100p 100p
C1101 C1102
470p 470p
N N
R1107 100k C1103 C1104
4.7/50
4.7/50
R1103 R1104
100k 100k
C1107
3.3p
R1108
100k
3.3p
C1108
R1228
1k
-25V !
R1227
* 1k
R1191 68
Q1175
FR UNF (1/4W) KTA1046/Y/
!
R1192 5.6k
(1/4W)
UNF
!
D1141 C1191
MTZJ36C 47/50
(SHEET 3) (SHEET 3)
(LVA10464-1)
PW602
QJP002-021601
IC102
STK413-430
!
C/SL/SRch POWER AMP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
R1268
47k
R1266
1k
100p 100p 100p
R1207 100k R1264 62k
C1207 C1264
3.3p
3.3p
R1208
100k
C1208
C1263
3.3p
100/10
R1210
100
C1221
100/100
C1268
0.022
L1269
R1241
L1241
L1242
R1141
UNF
L1141
L1142
R1142
UNF (1/4W)
R1232
R1185 10K
47k
C1185
Q1232
KTC3200/GL 10/100
R1231
47k
Q1231
KTC3200/GL Q1185
KTA1268/GL
R1178
10k
R1176
100k
-55.5V
Q1172 0V
KTA1268/GL
0V
R1177
100k
To CN472 To CN473
(LVA10464-1)
CN272
CN273
QJP001-031001
LVA10471-2
R1201 R1202
1k
1k
C1201 C1202
C1261
470p 470p 470p
N N N
C1262 C1203 C1204
4.7/50 4.7/50 4.7/50
R1262 R1203 R1204
62k 100k 100k
* L1351
QQLZ005-R45
* B1005
R1269 33
UNF (1/4W)
* L1352
QQLZ005-R45
0.45u
FW302
QUM216-25Z4Z4
33
B1006
C 0V *
UNF (1/4W) 1 1
GND 0V
2 2
SL 0V
0.45u
3 3
GND 0V
4 4
0.45u
SR 0V
5 5
GND 0V
R1242 33
6 6
UNF (1/4W)
33 FW301
(1/4W)
QUM215-25Z4Z4
L 0V
1 1
0.45u GND 0V
2 2
0.45u R
0V
3 3
GND 0V
33 4 4
5 5
-58.0V
C1171
10/25
Q1171
KTC3200/GL
-57.5V
R1179
10k
4.9V
Q1173
KTC3199/GL
0V D1171
1SS119
0V
C1172
47/16
FW141 FW303
QUM215-16DGZ4
QUM214-26DGZ4
To CN241 To CN203
(LVA10472-1) (LVA10472-1)
(SHEET 1) (SHEET 1)
ST301
QNB0188-001
!
2.3V
!
0V
!
*
L1354
QQLZ005-R45
*
* B1008
! C1371
220p
* C1369
0.047 *
C1372
220p
! *
B1007
*
C1375
* !
L1355 220p
QQLZ005-R45 * R1374
3.9 *
(1/4W) C1376
L1353
* 220p
QQLZ005-R45
!
* B1009 *
C1367
220p
!
*
C1368
220p
SHEET 2
2-3