Sony HCD-GX20 Service Manual page 21

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