HCD-DX10, HCD-RG20, HCD-RG30T, HCD-RG4SR, MHC-DX10, MHC-RG20, MHC-RG30T, MHC-RG4SR - Sony Audio Service Manual (repair manual). Page 16

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16
HCD-DX10/RG4SR/RG20/RG30T
5-2. BLOCK DIAGRAMS
TUNER/CD SECTION
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH
FM 75
Ω
G
AM
JK101
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
FND1
FND1
EXCEPT RG20:AEP,UK 
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
RG20:AEP,UK
+B
TU+12V
Q102
FM
10
FM OSC
15
VT1 IN
18
VT1
17
PD1
19
PLL
IC102
12
FM/AM IF
7
FM
14
AM OSC
2
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
24
CX101
4.5MHz
RF IF
AMP
Q101
CF101
CF102
DI
DO
CLK
CE
1
13
3
4
5
5
12
2
14
15
11
6
7
9
RB101
19
AM MIX OUT
IF OUT
9
AM/IF
12
AM OSC
24
VCO STOP
13
IF REQ MUTE
8
AM RF IN
20
AM OSC
22
V REG
23
FM IF
1
AM/FM IF MPX
IC101
11
L OUT
10
R OUT
MUTE
Q106
18
AM IF IN
IFT101
T101
R-CH
A
MAIN
SECTION
6
TUNED
7
STEREO
3
FM SD ADJ
5
FMDET
RV101
TUNER MUTE OUT
77
LC72131 CE
93
CLK
97
LC72131 DI
96
LC72131 BU2114 DO
95
TU STEREO
9
TUNED
10
MASTER CONTROL
IC601(1/2)
DO
CLK
CE
DI
L-CH
COIN
98
SQCK
100
CD RWC
2
CD DRF
8
CD SL+
5
CD SL-
4
TBL ADDRESS
SENSOR
68
IC711
69
CD PIC UP/DOWN SW
70
CD TRAY OPEN SW
71
CD TRAY CLOSE SW
73
CD MOTOR +
OPEN/CLOSE
S701
BU UP/
DOWN
S711
74
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
MOTOR
M721
OPTICAL PICK-UP
BLOCK
(KSM-213D)
LD
DRIVER
Q731
+5V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC781
FCS/TRK COIL
SL/SP MOTOR
DRIVER
ASP
IC731
1
2
27
26
VR
PD
11
12
18
17
3
CH1 INA
7
MUTE
CH1 OUTA
M
M
MOTOR
SLED
MOTOR
SPINDLE
S01
LIMIT
41
RF SM
VR
58
VCC
VC
A
B
C
D
E
F
DETECTOR
FIN 1
FIN 2
E
3
F
4
LDD
62
LDS
63
FD
16
TO
15
SLD
29
SPD
27
52
DATA
50
CLK
51
CL
53
CE
34
TGL
54
DRF
39
CV-
40
CV+
30
SL-
Q775
31
SL+
35
TOFF
44
SLI
49
DEF
36
TES
37
HFL
33
JP+
32
JP-
DSP
IC751
EFMI
10
EFMO
9
DEF
1
TES
16
HFL
15
JP+
19
JP-
20
COIN
56
4.2M
61
CQCK
57
RWC
54
TGL
18
TOFF
17
CLV+
12
CLV-
13
45
XI
44
XO
X701
16.9344M
37
L CH
40
R CH
R CH
B
MAIN
SECTION
CD-L
2
1
38
SLOF
VP
14
MUTE
Q771,773
CH1 OUTB
CH4 OUTA
CH4 OUTB
CH21 OUTB
CH2 OUTA
CH3 OUTB
CH3 OUTA
4
CH1 INB
25
CH4 INA
9
CH2 INB
20
CH3 INB
SHUTER IN/OUT
28
D MUTE
26
LIMIT SW
27
3
PDO
58
RESET
D732
35
L MUTE
D733
D735
C
MAIN
SECTION
DO,CLK
53
WRQE
55
SQ0UT
CD A MUTE
6
CD WRQ
7
SQOUT
99
CD RESET OUT
3
CD MOTOR-
CD NUMBER SENSOR
NULL
AM IF
FM TUNED
LEVEL
+6.8V
Ver 1.2  2003.11

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