Schematic Diagram - Main Board (2/4) - Sony WX-7700MDX Service Manual

5-16. SCHEMATIC DIAGRAM – MAIN Board (2/4) – •
A1
A2
A3
A4
R248
0
SE1L
C137
C136 R139 R140 1
SE1R
100p 1k 10k 50V
BUS_L
FD1L+
BUS_GND
FD1L-
BUS_R
FD1R+
C231 R237 R238 C232
FD1R-
100p 1k 10k 1
50V
FD2L+
FD2L-
C135
FD2R+
C134 R137 1
100p 1k 50V
AUX_L FD2R-
AM
R246 R138 C243
1k 10k 1
AUX_GND
R247 C246
1k 1
R236
(Page 38) 10k
AUX_R
C229 R235 C230
100p 1k 1
50V
A5
A6
A7
A8
•
See page 52 for Waveforms. See page 55 for IC Block Diagrams.
C114
10
16V
C307
C308
10
0.01
16V
C238 C239
1 1
C115
10
16V
ACINLF
C240
1
RL
ACINLR
C241 1 FR
ACINRF
C242 1 RR
ACINRR
R309 100 FL
C209
OUTLF
10
R308 100 RL
16V
OUTLR
R307 100 FR
INPUT SELECTOR, OUTRF
R306 100 RR
ELECTRICAL VOLUME,
OUTRR
FM MPX R305 100 SWL
OUTSWL
IC300
R304 100 SWR
TDA7402TR
OUTSWR
OUT55L
OUT55R
C210
10
16V
C304
C300 R300 C301 100 C305 L300
4700p 47k 0.47 16V 0.1 10µH
VOLATT
L301
10µH
C312
0.1
R312
1.5k
+8V REGULATOR
IC301
BA08SFP Q300,311
Q311
REGULATOR
XP6501
CTL
-1
VCC
OUT
-2
R315
C 1k
Q300
2SB1132
R316 R317 R318
10k 1k 1k
C310
R319
100
0
16V
C320
0.1
R117 R116
10k 22k
C141 C143
2.2 22p
R115
FL
56k
C321
100
16V
LINE AMP
IC102
R320 R321
NJM4580V
1k 1k
C323
10 16V
C322 R122 R121
0.1 4.7k 7.5k
C116
0.1 R145
RL
4.7k
RL
R120
56k
C118
C144 10
22p 16V
R118
R119
10k
22k
C211
0.1
R212 R211
10k 22k
C142 C236
2.2 22p
R210
56k FR
C119
10
16V
FL C120
22p
R146
4.7k
R123 R124
4.7k 7.5k
LINE AMP
R217 R216
IC201 4.7k 7.5k
NJM4580V
R226
4.7k
RR
C213
10
16V
RR
R215
56k
C237
22p
R213 R214
10k 22k
C214
10
16V
FR
C319 C215
C306
0.1 22p
0.1
R227
4.7k
C318 R218 R219
22 4.7k 7.5k
20V
R125 R126
22k 56k
R147
C122
DC/DC 47k
10 16V
SWL
CONVERTER
R313
1k IC302
TC7660S
C124
100p
C313
R314
22
470
16V
C314
1
50V
C315
0.1
C316
0.01
SWR
C217
22p
R228
C218
47k
10 16V
R221 22k R220
(Page 41)
39 39
C128
2.2 R133
50V 220
FL
R148
1k
Q104
2SD1328
R134 MUTING C129 C145
47k 100p 0.01
CENTER
VOLTAGE
R136 C132
GENERATOR
47k 100p C130
(FOR BIAS) R149 1000p
1k
IC303
NJM4558E
Q105
2SD1328
C131
2.2 R135 MUTING
50V 220
FR
RL
C222 R231
2.2 220
R243
50V
1k
Q203
2SD1328
R232 MUTING C223 C226
47k 100p 1000p
R234 C225
C117 47k 100p
22p R244
1k
Q204
2SD1328
C224
2.2 R233 MUTING
50V 220
RR
LOW-PASS
FILTER
C219 R222
IC103
2.2 220
NJM4580E
50V
Q201
DTC314TK
R223
MUTING
47k
R128
47k
C121
100p
Q100
DTC314TK
MUTING
C125 R127
2.2 220
C212 50V
22p
C220 R224
2.2 220
50V
Q200
DTC314TK
R225
MUTING DA204UT106
47k
LOW-PASS
FILTER
R130
IC202 47k
NJM4580E
AUX_L
AUX_GND
Q101
AUX_R
DTC314TK
MUTING
R129
C126
220
2.2
50V
C216
100p
C127
10 R131
16V 220
C123
22p C228 C227
0.1 100p
1000p
LINE AMP R150 Q103
1k 2SD1328
IC104
R132
NJM4580V MUTING
47k
R230
47k
R245
1k
Q202
2SD1328
MUTING
C221
10 R229
16V 220
56k
WX-7700MDX
PNJ1
6P
BUS AUDIO
(R) (L)
IN
FRONT
(R) (L)
AUDIO OUT
REAR
(R) (L)
D101
DA204UT106
D102
DA204UT106
(CHASSIS)
D103
PNJ2
2P
R153 1
(L)
AUX IN
(R)
CN3
3P
(L)
SUB WOOFER OUT
(MONO)
(R)
C133
100p
(CHASSIS)
C146
CN332
5P
RL
FL
GND
RR
FR
(Page 49)