Sony HCD-GX20, Service Manual

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21 21
HCD-GX20
MAIN Section
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
FM 75
Ω
G
AM
JK103
+12V
+12V
FA 10
FM OSC 16
A OUT 20
A IN 19
PD 18
PLL
IC102
FM
AM OSC
9 VCO STOP
12 IF IN
8 IF REQ
6 DO
4 DI
5
CLK
3 CE
XIN 1
XOUT 22
X101
4.5MHz
RF IF AMP
Q101
10.7MHz
R DO
R DI
R CL
R CE
2
1
5
12
3
8
10
11
7
RB101
2 AM MIX-OUT
8 FM-DET
FM/AM
FM SD
VCO STOP 12
IF-REQ
MUTE 10
AM RF-IN 21
AM OSC 23
FM-IN 1
AM/FM IF MPX
IC101
13 L-OUT
14 R-OUT
4 AM IF-IN
IFT101
R-CH
6 TUNED
7 STEREO
LATCH
85
TUNER STEREO 79
TUNER TUNED 78
ANT-IN
8
1
IF_
OUT
3 F_OUT
4 VT
FM FRONT-END
FE101
CF101
10.7MHz
CF102
Q102
AFC 22
CE
93
CLK 97
DATA OUT
95
DATA DIN 96
SYSTEM CONTROL
IC601(2/3)
R DO
R CL
R CE
R DI
BIAS
TRAP
R-CH
BIAS
OSC
Q209
+12V
ERASE
HEAD
REC/PB
HEAD
R-CH
PB
HEAD
DECK-B
DECK-A
18 TAPE A STAT
81
TAPE PHOTO A
Q207
AIN(L)
32
DECK A/B SELECT,
PB/REC EQ AMP
IC201
BIN(L)
34
REC-OUT(L) 21
TAPE AMS
83
28 EQOUT(L)
AMS
Q229,220,221
26
PB-OUT(L)
24 REC-IN(L)
23
ALC(L)
9
5 B+
7
15
11
24
FM TUNED
LEVEL
RV101
MUTE
Q105
D105
L201
R-CH
Q203
Q204
BIAS
Q208
Q205
RECBIAS
Q206
REC MUTE
9
TAPE MUTE 12
A/B 8
15
RECMUTE-ON/OFF
14
MUTE-ON/OFF
13 A/B
BUS/SHIFT
REGISTER
IC202
23 SOL A
BIAS 18
REC
20
26 DI
3
CLK
4 LATCH
TUNER MUTE 10
19 TAPE B STAT
TAPE DECK
TAPE A HALF
TAPE MODE SW A
TAPE B HALF
TAPE MODE SW B
TAPE FWD REC SW B
PHOTO SENSOR A
82 TAPE PHOTO B PHOTO SENSOR B
A SOL DRIVE
Q224,225
TAPE SOL A
22 SOL B
B SOL DRIVE
Q222,223
TAPE SOL B
24
MECHA VCC
M+B CONT
Q226,227
MOTOR SW VCC
BUFF
Q319
Q329
6 GAME GAIN1 L
AUDIO
R
GAME INPUT
R-CH
VIDEO
VIDEO OUT
BUFF
Q321
Q333
7 GAME GAIN2
BUFF
Q317
Q328
5 GAME MUTE
JK681
JK602
RESET
Q228
19 STK MUTE
17 SPK RELAY
21 CD CTL ON/OFF
2 RESET
3 SYS MUTE
94 DATA
A CD
SECTION
CD-L
IC301
A1 5
C1 9
SEL1
4
VIN1 1
17 OUT1
SC
13
SI 14
B1 7
SOUND PROCESSOR
MUTE
Q331
POWER AMP
IC501
1
2
12
6
7
Q305
Q311
MUTE CONT
Q313,314
MUTE
Q581
PROTECT
DETECT
Q809,810
D502
MUTE
Q315
D315
MUTE CONT
Q503,504
Q330
+5.6V
PROTECT
CONT
Q805
PROTECT
SWITCH
Q806
PROTECT
SWITCH
Q813
6 7
IC303
JK691
PHONES
R CH
R CH
L
R
RY2
L
R
JK303
SPEAKER
OVER LOAD
DETECT
Q501
RELAY
DRIVE
Q807,808
SPEANA
Q307
P01
P22
G01
G12
FLOURESCENT
INDICATOR TUBE
SYSTEM CONTROL
IC601(3/3)
VF VF
FUCTION
KEY
VR ENCODER A
8
VR ENCODER B 7
REMOCON IN
27
VR601
VOLUME
ENCODER
X601
32.768kHz
FLD601
41
30
KEY INPUT 1 24
12 XT1
13
PROTECTOR SENSOR 84
HEADPHONE SENSOR
FUCTION
KEY
KEY INPUT 0 23
S621-626
FUCTION
KEY
KEY INPUT 2 25
S611-620
PWR/DISP SW 26
REMOTE
CONTROL
RECEIVER
RM601
T911
POWER
TRANSFORMER
(MAIN)
AC
IN
RELAY
DRIVE
Q901
RY901
VF
VF
RESET 1 3
IC602
D616
D615
S631-638
1
77
PWR LED
LED616
92 GAME MIX LED
LED615
91 GAME LED
LED611
85 TAPE LED
LED612
RECT
D541
+B
-B
POWER
AMP
-30V REG
Q911
D902-905
+5.6V
REG
1 3
IC901
T901
POWER
TRANSFORMER
(SUB)
BU +5.6V
42
45
47
.
50
52
.
65
VACS 20
SPEANA IN L 21
S601
S602
DISPLAY
VOLUME
87 TUNER LED
LED614
86 CD LED
LED610
BU+5.6V
+5.6V
51 VPP
15 CF1
16
CF101
10MHz
XT2
CF2
D911
-30V
D542 D543
+12V
REG
3
1
IC802
+12V
+12V
UNREG
D801-804
+5.6V
REG
3 1
IC803
+5.6V
Q802
Q801
+5V
REG
3 1
IC804
CD +5V
+9V
REG
3 1
IC801
M +9V
CD +7V
D805-808
D809
D810
P.S. RELAY
2
Q601
PWR DOWN 28
RESET 11
EVER +5.6V
T101
?/1
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