Block Diagram -Audio Section - Sony HCD-GZR7D Service Manual

HCD-GZR7D/GZR8D/GZR9D
Q Q
3 7 6 3 1 5 1 5 0
7-4. BLOCK DIAGRAM – AUDIO Section –
SW OUT
HP DET
SOUND
MAIN
E
SECTION
(Page 45)
FL OUT
TONE OUT L
RECA L
RECA L
FL
VIDEO
C SL
SECTION
SW
(Page 44)
FC
LT
T E
L 1 3 9 4 2 2 9 6 5 1 3
• Signal Path
: AUDIO
w w w
HCD-GZR7D/GZR8D/GZR9D
GZR7D
GZR8D/GZR9D
ELECTRONIC VOLUME
IC201
15 SW IN
SW OUT 24
3 SL EXT IN
SL OUT 29
33 FL IN
SR OUT 26 R-CH
SL LPFIN
6
C OUT 25
LEE VOLIN
14
C LPF IN
13
L LPF OUT 38
CD-L
L LPFIN
37 FL OUT 34
DPL-L
17 18
GZR7D
SYSTEM CONTROL
IC401 (3/4)
O-VOL-IC-CLK
73
78 I-VOL-IC-DATA
S751
CLOSE OPEN
OPEN/CLOSE
DETECT
32 I-CDM-OPEN
RE701
DISC TRAY
56 I-CDM-ENC
ADDRESS
DETECT
O-SUR & CEN-SP-RELAY 23
IC731
Q731
TABLE
I-CDM-TBL-ADR-SW
ADDRESS 33
SENSOR
IC701
LOADING
LM-F
M751 4 7 36
MOTOR
(LOADING) LM-R
2 9 37
DRIVER
O-CDM
IC712
TABLE
M741 4 7 34 TM-F
MOTOR
(TABLE) 35 TM-R
2 9
DRIVER
x a o
y
. i
http://www.xiaoyu163.com
GZR7D/GZR8D
SUBWOOFER PRE AMP
IC301
3 1
PRE DRIVER
IC401 (GZR9D)
IC402 (GZR7D/GZR8D)
15 IN Lch
OUT CH1+ 8
19 IN Rch OUT CH2+ 10
R-CH
GZR9D
20 IN SW
OUT SW+ 22
STBY
17
SUBWOOFER
MUTE
+55V -55V +32V
Q258,259
MUTE
Q489
MAIN
D
SECTION
(Page 45)
GZR8D/GZR9D
PRE DRIVER
IC501
11 SURR-L-IN
SURR-OUT-L+ 4
Q Q
R-CH 15 SURR-R-IN SURR-OUT-R+ 6
3 7 6
CENT-IN
16
CENT OUT+ 19
STBY
13
MUTE
Q253,255
+32V -32V
O-SW-AMUTE 4
MUTE
O-STK-MUTE 21
Q509
O-SURR-A-MUTE 2
MUTE
O-SW-SP-RESET 38
Q256,257
O-CENTER-A-MUTE 3
SURROUND/CENTER
SPEAKER RELAY
CONTROL
Q402
O-FRONT-SP-RELAY 25
O-FAN 48
O-DVD-POWER
DISPLAY/
F
POWER
SECTION
(Page 47)
PROTECT
PROTECT
Q401
u 1 6 3
.
46 46
2 4
8 9 9
R-CH
R-CH
RELAY
OVERLOAD OVERLOAD CONTROL
DET DET Q488
Q441,443 Q481,482
-32V
RELAY
SUBWOOFER RELAY
DRIVER
CONTROL
Q403 Q490
TH441 THERMAL
PROTECT
DET
Q485-487
Q483,484 LED
DRIVER
Q607
RELAY
CONTROL
Q480
R-CH
3 1 5 1 5 0 8 9 2
OVERLOAD
PROTECT
DETECT
Q504,505
Q506,507
RELAY
DRIVER
Q501
RELAY+B
FRONT SPEAKER FAN
RELAY SWITCH DRIVE
UNREG15V
Q618,619 Q612
FAN
PROTECT
Q609-611
FAN
CONTROL
Q613,614
FRONT SPEAKER
RELAY SWITCH
Q615,617
FAN
CONTROL
Q605,606
POWER FAN
CONTROL DRIVE
UNREG15V
Q607,608 Q604,616
FAN
DRIVE
Q601,603
m
c o
2
8 9 9
GZR7D/GZR8D
J302
SUBWOOFER
OUT
J803
R-CH PHONES
JK402
4 +
L
3 –
FRONT
SPEAKER
R-CH 2 +
R
RY441 1 –
GZR9D
+
SUBWOOFER
–
JK401
RY442
D612
SUBWOOFER
LED+9V
JK501
+
4
L
3 –
4 9 8 2 9 SURROUND 9
SPEAKER
+
R-CH 2
R
RY541
–
1
+
6
CENTER
SPEAKER
–
5
RY542
+
FAN902
–
+
FAN901
–