Read Sony HCD-GX255 / HCD-RG170 / HCD-RG470 Service Manual online
HCD-GX255/RG170/RG470
10
10
HCD-GX255/RG170/RG470
3-5. SCHEMATIC DIAGRAM – MAIN Board (2/3) –
•
See page 5 for Waveforms.
•
See page 13 for IC Block Diagrams.
(Page 12)
R158
R203
R204
R205
R206
R234
R239
C191
C162
CN065
CN203
CN061
R103
R148
R147 C147
C148
C140
C139
R150
R149
R068
C208
C207
CN201
C210
C163
C130
C129
C119
R235
R240
Q208
C205
C211
C222
Q232
R233
R212
C223
C225
C180
C174
C173
C179
C198
C192
C182
C183
C181
C184
R175
R176
R177
R178
C202
R184
R182
R192
R190
C194
R186
R188
C200
R180
C201
C197
R191
R189
C193
R183
R179
R185
R187
C199
C104
C102
C103
C101
C171
C172
R181
C158
C161
R156
C155
C160
R157
R159
R160
C144
C146
R142
C142
R144
C141
R131
R132
R141
R143
R145
C143
C136
C137
C128
C127
C125
C123
C124
C126
R121
R122
R120
R119
C145
R128
D121
R247
R248
C106
C105
C110
C109
C121
C122
R117
R107
C116
R116
C118
R108
D122
R110
R111
R113
C120
R070
C064
C063
C149
R146
R140
R138
R134
R133
IC101
C212
Q112
R112
C111
C117
R137
R139
R129
C132
R170
R161
R162
C175
R169
R167
R165
R163
C177
R173
R168
R171
R174
C176
R164 R166
C178
R172
R069
CN066
R244
C209
C220
C065
C187
C188
C189
C190
R106
C113
C114
C156
Q141
C068
JW164
R104
HP1
HRPE1
EP061
L201
R236
R130
C229
R114
Q111
R109
Q142
Q210
Q209
Q203
R238
Q206
Q207
Q205
R237
R232
Q231
C214
R208
R207
C213
C206
C224
Q201
R135
R136
C159
C069
C131
C133
JW173
C186
C215
C196
C185
C070
C066
100
47k
47k
10k
10k
10k
1k
0.01
100p
5P
8P
5P
1k
100k
100k 470p
470p
0.1
0.1
47k
47k
10
1000p
1000p
3P
1000p
22
50V
10 50V
10 50V
2.2
50V
50V
2.2k
1k
2SC3052
1000p
0.01
47
16V
KTA1271Y-AT
10k
10
0.01
0.0047
10
50V
2200p
2200p
10
50V
220p
0.01
1 50V
1 50V
1 50V
1 50V
1k
1k
1k
1k
2.2
50V
50V
220k
100k
4.7k
2.2k
220p
47k
100k
10
50V
470k
2.2
50V
50V
220p
4.7k
2.2k
220p
220k
470k
47k
100k
10
50V
1000p
1
50V
1000p
1
50V
0.1
50V
0.1
50V
100k
0.22
100p
100
47
16V
100
16V
16V
100
1M
10
0.1
0.1
220k
47p
47k
47p
220k
220k
220k
47k
47k
0.1
10
50V
10
50V
0.1
0.1
0.01
0.01
0.01
0.01
4.7k
4.7k
4.7k
4.7k
0.1
10k
MC2840
2.2k
2.2k
1
50V
1
50V
1
50V
1
50V
2200p
2200p
10k
1k
1
50V
100
2.2
50V
50V
22k
MC2840
47k
100k
4.7k
0.47
10k
1000p
0.1
47
16V
1M
22k
47k
2.2k
2.2k
BD3401KS2
0.0047
2SC3052
470
22
50V
1000p
47k
22k
100k
0.47
50V
100k
2.2k
2.2k
0.01
100k
220k
4.7k
10k
220p
2.2k
220k
470
2.2k
0.01
10k
4.7k
220p
470
22k
4P
22k
1000p
22p
1000p
470p
470p
470p
470p
1k
1
50V
1
50V
100
16V
16V
2SC3052
1000p
1k
BIAS OSC
10k
0
4.7
50V
50V
2.2k
2SC3052
4.7k
2SC3052
2SC3052
2SC3052
2SA1235
2.2k
2SC3052
2SC3052
2SC3052
2.2k
10k
RT1N431C
-TP-1
0.0047
4.7k
22k
0.01
1000p
0.0047
2SC2001
1000p
1000p
0.1
50V
0.47
50V
1000p
10p
10p
10p
10p
10p
A1
A2
A3
A4
C1
C2
C3
C4
C5
C6
C7
C9
C10
C11
C12
M
-C
L
M
-D
A
O
-BI
O
-RP
I-HP/AUDIO
TUR
T
UL
CD
L
C
D
R
I-MIC
TA-AM
S
*
∗
PBNF2
PBNF1
TAPE A1
TAPE A2
TAPE B1
TAPE B2
REC OUT1
REC OUT2
RECNF2
RECNF1
ALC
SC
SI
VDD
GND
VCC
1/2VCC
FILTER
SW OUT
LF4
LF3
LF2
LF1
BBIN2
BBNF2
VOL
BBNF1
BBIN1
VIN1
TONE OUT1
VOL
BNF2
MOUT2
MOUT1
MNF2
TNF2
TNF1
SUR1
SUR2
PB OUT2
PB OUT1
SAOUT2
SAOUT1
CAP
MIC
CD L
CD R
TUNER R
TUNER L
TAPE R
TAPE L
MD L
MD R
GAME L
GAME R
L
R
R
L
HP CTL
D GND
R-OUT
HP-GND
L-OUT
OUT1
OUT2
MIC SIG
MIC GND
MIC 9V
MIC CTL
LINE OUT2 (R)
LINE OUT1 (L)
GND
GND
AUDIO IN-R
AUDIO IN-L
AUDIO CTL
(2/3)
EE,RU
(PB)
(REC/PB/ERASE)
(CHASSIS)
Q111,112
BAND-PASS FILTER
Q141,142
FEED BACK SWITCH
ELECTRICAL VOLUME
INPUT SELECT,TONE CONTROL,
Q205-208
REC MUTING
Q231,232
REC BIAS SWITCH
PB MUTING
PB MUTING
(DECK-A)
(DECK-B)
INVERTER
BIAS OSC
∗
R135,136
0
1k
(GX255/RG170)
(RG470)
(AEP,EE,RU)
(AEP,EE,RU)
(AEP,EE,RU)
(AEP,EE,RU)
AEP,
(AEP,EE,RU)
(AEP,EE,RU)
(E2,E51)
(E2,E51)
VIN2
TONE OUT2
AMS OUT
BOUT2
BOUT1
BNF1
MNF1
(Refer to page 47 of
service manual)
(Refer to page 47 of
service manual)
(Page 9)
(Page 9)
(Page 11)
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