![background image](http://html.mh-extra.com/html/sony/hcd-gnz7d/hcd-gnz7d_service-manual_420704038.webp)
38
38
HCD-GNZ7D/GNZ8D/GNZ9D
HCD-GNZ7D/GNZ8D/GNZ9D
7-4. BLOCK DIAGRAM — MAIN SECTION —
LINE
REC(DECK B)
PB(DECK A)
PB(DECK B)
TUNER
DOWN MIX
MIC
VIDEO
RELAY
SWITCH
L
R
FAN
SWITCH
J1001
BIAS OSC
Q601
T601
R-CH
FAN SWITCH
Q782-784
FRONT
R-CH
R-CH
A+9V
J202
AC DET
AC4
SW
TONE
MUTE
POWER AMP
IC401
REC/PB AMP,
SOUND CONTROLLER
IC201
SYSEM CONTORL
IC101 (3/4)
OVERLOAD
DET
Q401
5
TM901
LCH
6
DI
8
DO
4
+9V
3
RCH
DBFB
DET
AC
DET
DBFB
SWITCH
Q212
R-CH
R-CH
Q282,283
+VH
RY481
V
Y
YG
C
CR/B
CB/R
WIDE
DSEL
COMPONENT
VIDEO BUFFER
IC801
VIDEO SELECTOR
IC802
VIDEO
OUT
J802
COMPONENT
VIDEO OUT
J801
FRONT
SPEAKER
VIDEO
INPUT
S VIDEO
OUT
J803
C
Y
Y
P
B
/C
B
P
R
/C
R
TM401
Q272
Q271
Q402,403
MUTE
Q701
AC DET
D763,Q721-723
D753
SWITCH
Q281
MUTE
Q703
MUTE
CONTROL
Q791-795,
797
Q481,482
R-CH
OVERLOAD DET
SURROUND RY
DC DET
PROTECT
FUN DET
R-CH
OVERHEAT
DET
TH401,Q416,417
AC DET
J1003
RV1001
MIC 1
J1004
MIC 2
MIC LEVEL
MIC AMP
IC1001 (1/2)
MIC AMP
IC1001 (2/2)
RV1002
ECHO LEVEL
IN
L
R
OUT
L
R
AUDIO
L
R
R-CH
TV/SAT
VIDEO
R-CH
AC DET
R-CH
Q602,603
Q627,
Q628
A+9V
ERASE
HEAD
REC/PB
HEAD
R-CH
R-CH
PB
HEAD
MUTE CONTROL
Q629-631
MUTE CONTROL
Q623,624
MUTE
Q622
J1004
PHONES
R-CH
AC3
FAN901
FAN
FAN902
FAN
(DECK A)
HP901
HRPE901
(DECK B)
TAPE
MECHANISM
DECK
BLOCK
B SOL DRIVE
Q101,102
CAP M DRIVE
Q103,104
A SOL DRIVE
Q105,106
7
CL
9
CE
TUNED 1
DOUT
DIN
CLK
CE
TUNED
LINE OUT
MUTE CONTROL
Q727
MUTE
Q705
IC203
PROTECT
AM
ANTENNA
FM 75
Ω
COAXIAL
MUTE CONTROL
Q729
HP SW
GNZ9D
MIC
21 PB/REC
24 CAPM SW
10 AU-OUT MUTE
SIGNAL IN/OUT CONTROL
IC102 (2/3)
MUTE
CONTROL
Q728
• Signal Path
: TUNER
: AUDIO
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
: VIDEO
: COMPONENT VIDEO
• R-CH is omitted due to same as L-CH.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299