Schematic Diagram - Main Board (2/3) - Sony HCD-GX255 Service Manual

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