Read Sony XM-754SX Service Manual online
9
9
XM-754SX
3
2
1
5
6
7
3
2
1
3
2
1
3
1
6
7
2
1
PRE AMP
IC801 (1/2)
PRE AMP
IC802 (1/2)
5
6
7
3
2
1
LOW BOOST
IC806 (2/2)
GAIN AMP
IC806 (1/2)
H.P.F
IC803 (1/2)
L.P.F
IC804 (2/2)
L.P.F
IC804 (1/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q109
DRIVE
AMP
Q107
DIFFERENTIAL
AMP
Q104
POWER
AMP
Q110
DRIVE
AMP
Q108
BIAS
Q111
LEVEL
SHIFT
Q101
LEVEL
FILTER
S801-1
LPF
OFF
HPF
LEVEL
RV802-1
LOW
BOOST
B+
(+14.2V)
B–
(–14.2V)
B+
(+14.2V)
B–
(–14.2V)
CNJ100-1
CNJ100-2
CN101
RV801-1
FILTER
RV801-3
FILTER
RV803-1
LINE
SWITCH
Q102
+12V
GND
10
7
5
6
7
5
7
2
1
6
7
PRE AMP
IC801 (2/2)
PRE AMP
IC802 (2/2)
5
6
7
3
2
1
LOW BOOST
IC807 (2/2)
GAIN AMP
IC807 (1/2)
H.P.F
IC803 (2/2)
L.P.F
IC805 (1/2)
L.P.F
IC805 (2/2)
DIFFERENTIAL
AMP
Q203
POWER
AMP
Q209
DRIVE
AMP
Q207
DIFFERENTIAL
AMP
Q204
SWITCH
CONTROL
Q801,802
POWER
AMP
Q210
DRIVE
AMP
Q208
BIAS
Q211
LEVEL
SHIFT
Q201
RV802-2
LOW
BOOST
RV801-2
FILTER
RV801-4
FILTER
L
HIGH
LEVEL
INPUT
(FRONT)
R
L
(BTL)
(FRONT)
INPUT
(REAR)
INPUT
R
CN810
L
BTL
R
RV803-2
LINE
SWITCH
Q202
RV204
BIAS
RV104
BIAS
15
16
1
2
14
12
TEMP.DET
THN801,804-807,
THP802,803
REF.
REG
REG
CN800
F901
40A
INVERTER
Q904,905
INVERTER
Q906,907
DRIVER
Q908
DRIVER
Q909
11
9
8
3
D811
THERMAL
D810
OFFSET
(PROTECTOR)
FRONT
SPEAKER
OUT
D808
POWER
D809
OVER
CURRENT
SW805
TEST
TONE
DC-DC
CONVERTER
TRANSFORMER
T801
DC-DC CONVERTER
IC901
SWITCH
Q808
• Signal path
: AUDIO
• Front-ch : same as Rear-ch
: AUDIO
• Front-ch : same as Rear-ch
2
1
REG
Q901,902
FILTER
S801-2
LPF
OFF
HPF
(40Hz)
(40Hz)
OVER LOAD
DET
Q112
OVER LOAD
DET
Q212
CN811
L
BTL
R
REAR
SPEAKER
OUT
6
5
CNJ100-3
CNJ100-4
CN201
L
(BTL)
R
REM
CN803
B+
REG
Q910
B–
REG
Q911
B+
(+23.5V)
B+
(+42V)
B+
(+36V)
B+
(+36V)
(–35V)
(–35V)
(–42V)
(–14.2V)
B –
B –
B –
B –
B+
(+14.2V)
LED DRIVE
Q812,813
D823
D822
D828
D829
LED DRIVE
Q810,811
OFFSET
DET
Q803-805
LED DRIVE
Q809
POWER
ON/OFF
Q903
DC DET
IC902
D903
D905
D906
D904
D917
D911
D912
D918
D905,906
RECT
D911,912
RECT
D903,904
RECT
D917,918
RECT
D909
D907
D908
D910
D907-910
RECT
TEST TONE
GENERATOR
IC815
(FRONT)
(REAR)
L
HIGH
LEVEL
INPUT
(REAR)
R
(PROTECTOR)
(PROTECTOR)
4-1. BLOCK DIAGRAM
SECTION 4
DIAGRAMS
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