Diagrams; Block Diagram - Sony XM-475GSX Service Manual

4-1. BLOCK DIAGRAM

PRE AMP
PRE AMP
IC801 (1/2)
IC802 (1/2)
CNJ100-1
L 3
1 3
(BTL)
2
2
CN101
L
HIGH
INPUT
LEVEL
(FRONT) INPUT
(FRONT)
R
PRE AMP
PRE AMP
IC801 (2/2)
IC802 (2/2)
CNJ100-2
6
7 5
R
5
6
CNJ100-3
L
(BTL)
CN201
L
HIGH
INPUT
LEVEL
INPUT
(REAR)
(REAR)
R
CNJ100-4
R
3
1
2
TEST TONE
GENERATOR
SW805
IC815
5
7
TEST
6
TONE
F901
CN800
40A
REG
+12V
2
Q901,902
GND
1
DC DET
IC902
POWER
ON/OFF
Q903
CN803
REM
SECTION 4

DIAGRAMS

H.P.F L.P.F
IC803 (1/2) IC804 (2/2)
1 3 1 6 7
RV801-1 RV801-3
FILTER FILTER
H.P.F L.P.F
IC803 (2/2) IC805 (1/2)
7 5 7 2 1
RV801-2 RV801-4
FILTER FILTER
D828 D829
LED DRIVE
Q812,813
D822 D823
D809
OVER
CURRENT
(PROTECTOR)
DC-DC CONVERTER
IC901
12
D808
POWER
REF.
REG
14
D811
THERMAL
1
(PROTECTOR)
2
LED DRIVE
Q809
15
TEMP.DET
16
THN801,804-807
3
SWITCH
Q808
S801-1 (FRONT)
FILTER
L.P.F
LPF
IC804 (1/2)
LOW BOOST
OFF
GAIN AMP
IC806 (2/2)
IC806 (1/2)
HPF
2 1
5
7 3
6 1
2
B+
(+14.2V)
RV802-1
LEVEL
LOW
SHIFT
BOOST
Q101
(40Hz)
RV803-1
LEVEL
B–
(–14.2V)
L.P.F
IC805 (2/2)
LOW BOOST
GAIN AMP
IC807 (2/2)
IC807 (1/2)
6 7
5
7 3
6 1
2
S801-2
B+
FILTER
(+14.2V)
LPF
OFF
LEVEL
SHIFT
HPF
RV802-2
Q201
RV803-2
LOW
LEVEL
BOOST
B–
(40Hz)
(–14.2V)
(REAR)
D903,904
RECT
D903
DC-DC
D904
CONVERTER
TRANSFORMER
T801
11
INVERTER
10
Q904,905
DRIVER
Q908
8
INVERTER
9
Q906,907
DRIVER
Q909
D917
D918
9 9
LINE
SWITCH
Q102
DIFFERENTIAL DRIVE POWER
AMP AMP AMP
Q103 Q107 RV104 Q109
BIAS
BIAS
Q111
DIFFERENTIAL DRIVE POWER
AMP AMP AMP
Q104 Q108 Q110
LINE
SWITCH
Q202
DIFFERENTIAL DRIVE POWER
AMP AMP AMP
Q203 Q207 Q209
RV204
BIAS
BIAS
Q211
DIFFERENTIAL DRIVE POWER
AMP AMP AMP
Q204 Q208 Q210
SWITCH
CONTROL
Q801,802
B+
(+23.5V)
B+
B+
REG
(+14.2V)
Q910
D905
B+
(+42V)
D907
B+
D906
(+36V)
D905,906
RECT
D909
B+
(+36V)
D907-910
RECT
D908
B –
(–35V)
D911,912
D910
B –
RECT
(–35V)
D911
B –
• Signal path
(–42V)
D912
B–
B –
REG
• Rear-ch is omitted due to same as Front-ch.
(–14.2V)
Q911
D917,918
RECT
XM-475GSX
CN810
OVERLOAD
FRONT
DET
SPEAKER
Q112
OUT
L
BTL
OVERLOAD
DET
Q212
R
CN811
REAR
SPEAKER
OUT
L
BTL
R
OFFSET
LED DRIVE
DET
Q810,811
Q803-805
D810
OFFSET
(PROTECTOR)
: AUDIO