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HCD-GX20
MAIN Section
• R-CH is omitted due to same as L-CH
: PB (DECK B)
: REC (DECK B)
FM 75
Ω
G
AM
JK103
+12V
+12V
PLL
IC102
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
AM/FM IF MPX
IC101
IFT101
R-CH
ANT-IN
8
1
IF_
OUT
3
F_OUT
4
VT
FM FRONT-END
FE101
CF101
10.7MHz
CF102
Q102
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
Q207
DECK A/B SELECT,
PB/REC EQ AMP
IC201
AMS
Q229,220,221
9
5
B+
FM TUNED
LEVEL
RV101
MUTE
Q105
D105
L201
R-CH
Q208
BUS/SHIFT
REGISTER
IC202
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
A SOL DRIVE
Q224,225
TAPE SOL A
B SOL DRIVE
Q222,223
TAPE SOL B
M+B CONT
Q226,227
MOTOR SW VCC
BUFF
Q319
Q329
L
AUDIO
R
GAME INPUT
R-CH
VIDEO
VIDEO OUT
BUFF
Q321
Q333
BUFF
Q317
Q328
JK681
JK602
RESET
Q228
CD-L
IC301
SOUND PROCESSOR
MUTE
Q331
POWER AMP
IC501
12
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
FLOURESCENT
INDICATOR TUBE
SYSTEM CONTROL
IC601(3/3)
VF
VF
FUCTION
KEY
VR601
VOLUME
ENCODER
X601
32.768kHz
FLD601
FUCTION
KEY
S621-626
FUCTION
KEY
S611-620
RM601
T911
POWER
TRANSFORMER
(MAIN)
AC
IN
RELAY
DRIVE
Q901
RY901
VF
VF
IC602
D616
D615
S631-638
LED616
LED615
LED611
LED612
RECT
D541
+B
-B
POWER
AMP
-30V REG
Q911
D902-905
IC901
T901
POWER
TRANSFORMER
(SUB)
BU +5.6V
S601
S602
DISPLAY
VOLUME
LED614
LED610
BU+5.6V
+5.6V
CF101
10MHz
D911
-30V
D542
D543
IC802
+12V
+12V
UNREG
D801-804
IC803
+5.6V
Q802
Q801
IC804
CD +5V
IC801
M +9V
CD +7V
D805-808
D809
D810
Q601
EVER +5.6V
T101
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299