HCD-RG30, MHC-DX20, MHC-RG30 — Sony Audio Service Manual (repair manual). Page 26

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26
26
HCD-DX20/RG30
6-7. SCHEMATIC DIAGRAM   – MAIN SECTION (2/5) –
• See page 19 for Waveforms.   • See page 41,42 for IC Block Diagrams.
JK101
R3
C103
R104
C104
R107
R101
R102
R108
R103
CF101
CF102
C102
R105
C149
R139
C110
R117
C111
C29
L108
1
µ
H
R111
R112
R113
R114
R115
R116
C112
C114
C115
C116
C117
C118
R135
R136
C119
R118
R119
R120
R121
R122
R123
C120
X101
C123
C124
R124
C125
C126
RV101
C128
C129
C130
C134
C135
C136
C171
C172
C173
C175
C176
C127
R126
R127
R128
R129
C106
C107
C108
R110
C141
C143
C137
C138
R131
R132
R137
C140
R130
R4
Q105
R174
R175
R138
R183
C184
C186
C187
X102
C182
C183
R181
C179
C180
C181
R177
R7
T102
R109
D101
R171
C144
C101
C113
C121
C122
JK101
D107
R172
L109
JR637
JR636
JR639
Q103
Q104
R133
R134
C131
C132
C133
R125
T101
C142
C139
JR633
Q102
C105
Q101
R106
JR606
L107
L107
JR634
JR635
JR603
JR
110
JR
607
JR
109
JR641
JR642
JR602
D104
D108
0
0.01
150
47
16V
0
47
680
330
680
0.01
1.5k
4p
0
0.01
100k
0.01
33p
100
4.7k
4.7k
4.7k
10k
100
0.01
47
16V
0.01
2.2
50V
47
16V
0.01
4.7k
3.3k
0.01
100
10k
10k
1k
10k
10k
0.01
4.5MHz
0.001
0.001
220
47
16V
0.01
22k
0.01
0.01
0.01
0.047
4.7
50V
4.7
50V
47
16V
0.1
560p
330p
0.01
1
50V
4.7k
2.2k
560
560
100
16V
0.01
10
50V
10k
0.047
22
16V
10
50V
560p
12k
2.2k
100
1
50V
10k
0
2SC2412K
1k
470
100
4.7k
2.2
50V
10
50V
0.01
4.332MHz
56p
56p
4.7k
0.01
0.01
2.2
50V
100
0
47
DA204K
100
47
16V
0.01
0.47
50V
22p
CH
33p
CH
1S
S3
55T
E
100k
0
0
0
0
2SC1623
2SC1623
0.22
50V
4.7k
0
UN4111
0.01
2SC2410SN
0
0
0
0
0
0
0
0
0
0
0
-TT
DTZ 11-6.8B
1SS355TE
54
16
13
14
X1 X2
10
20
21
22
23
24
25
26
27
28
*2
*2
*1
*1
*
*
*
FM
AM
XIN
VCO
CE
DI
CLK
DO
FM
M
W
FM
IF
IF FEO
FM
/AM
XOUT
GM
ND
VT2
PD1
PD2
VT1IN
VT1
B+
SW
VT2IN
FM
 OSC
AM
 OSC
REG
AFC
AG
C
M
PX
M
PX
OSC/OUT
AM
 RF
AM
 M
IX
AM
 IF
AM
/FM
 O
UT
VCO STOP
OSC
VCC
GND
AM
/FM
L OUT
R
 OUT
IF OUT
IF M
UT
ST LED
TU LED
FM
 D
ET
FM
 SD
FM
 IF
FM
75
75
AM
S
T LED
TU LED
S
T M
UTE
R
CLK
+B
GND
VT
GND
GND
ANT IN
OSC OUT
GA
FE101
+B
GND
VT
GND
GND
ANT IN
OSC OUT
FE101
IF OUT
IF OUT
RDS
DECODER
RB101
IFT101
IC103
BU1924
IC102
LC72130
IC101
BA1450
CED
PB641
PLL
FM/AM
FRONTEND,
IF AMP,MPX
AMP
RG30
QU
AL
RDATA
VR
EF
M
UX
VD
D1
VSS1
VSS3
CM
P
RCLK
NC
XO
XI
VD
D2
VS
S2
T1
T2
RG30
DX20
DX20
RG30
AMP
Q103,104
RG30
DX20
*2 R133,134
270
470
RG30
DX20
0.022
0.015
FM TUNED LEVEL
RG30
DX20
100P
470P
*C142
RG30
DX20
*C139
680P
220P
RG30
DX20
+B
SWITCH
RF IF AMP
RG30
DX20
*R106
680
330
RG30
33
µ
H
DX20
RG30
RG30
DX20
DX20
*1 C131,132
MAIN 
BOARD(3/5)
(Page 27)
MAIN 
BOARD(4/5)
MAIN 
BOARD(5/5)
(Page 28)
(Page 29)
MAIN 
BOARD(1/5)
(Page 25)
4
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