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XM-460GTX Marketing Specifications
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Block Diagram - Sony XM-460GTX Service Manual
Stereo power amplifier
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Service manual
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(4 pages)
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4-2. BLOCK DIAGRAM
PRE AMP
LINE AMP
IC801 (1/2)
IC802 (1/2)
CNJ100-1
L
3
1
3
2
2
CNJ802 (1/2)
-1
L
HIGH
-5
INPUT
LEVEL
L
INPUT
(FRONT)
-6
(FRONT)
R
-2
PRE AMP
R
LINE AMP
IC801 (2/2)
IC802 (2/2)
CNJ100-2
6
R
7
5
5
6
PRE AMP
LINE AMP
IC808 (1/2)
IC809 (1/2)
CNJ100-3
L
6
(L+R)
5
7
5
6
CNJ802 (2/2)
-3
L
-7
HIGH
L
INPUT
LEVEL
INPUT
-8
(REAR)
R
(REAR)
-4
R
PRE AMP
LINE AMP
IC808 (2/2)
IC809 (2/2)
CNJ100-4
R
3
(L+R)
3
1
2
2
F901
CN800
25A
POWER
+12V
2
SWITCH
Q901
DC DET
F902
IC902
25A
OVER
VOLTAGE
DETECT
Q902
GND
3
D829
D828
POWER
ON/OFF
SWITCH
REM
1
Q903
PL802
(PILOT LAMP)
IC806 (1/2)
3
1
2
RV801-2
FILTER
RV803-1
RV801-1
LEVEL
FILTER
IC807 (1/2)
3
7
2
RV801-3
FILTER
RV803-2
RV801-4
LEVEL
FILTER
HPF
BPF
IC811 (1/2)
IC811 (2/2)
7
3
1
6
7
RV804-1
RV804-2
FILTER
FILTER
RV806-1
LEVEL
HPF
BPF
IC812 (1/2)
IC812 (2/2)
1
3
1
6
7
RV804-3
RV804-4
FILTER
FILTER
RV806-2
LEVEL
PROTECTION
Q812-814
DC-DC CONVERTER
IC901
VCC
12
REF.
REG
BUFFER
14
Q810
REF
1
2
LED
LED
SWITCH
Q808
Q809
15
R
G
TEMP.DET
16
THN801,804-807
D811
3
POWER/
PROTECTOR
(FRONT)
S801-1
HPF
FILTER
HPF
LOW BOOST
IC806 (2/2)
OFF
1
5
7
6
B+
(+14.2V)
BOOST
GAIN
RV802-1
Q101
LOW
HPF
BOOST
B–
(40Hz)
LOW BOOST
(–14.2V)
IC807 (2/2)
1
5
7
6
B+
S801-2
(+14.2V)
FILTER
HPF
BOOST
GAIN
OFF
RV802-2
Q201
LOW
BOOST
(40Hz)
B–
(–14.2V)
(REAR)
LPF
IC813 (1/2)
LOW BOOST
IC813 (2/2)
6
7
3
1
2
B+
(+14.2V)
S802-1
FILTER
LPF
BOOST
GAIN
OFF
RV805-1
Q301
LOW
HPF
BOOST
B–
(40Hz)
LPF
(–14.2V)
IC814 (1/2)
LOW BOOST
IC814 (2/2)
6
7
3
1
2
B+
S802-2
(+14.2V)
FILTER
LPF
BOOST
GAIN
OFF
RV805-2
Q401
HPF
LOW
BOOST
(40Hz)
B–
(–14.2V)
D903,904
D903
RECT
DC-DC
CONVERTER
TRANSFORMER
T801
D904
11
SWITCHING
BUFFER
10
DRIVER
Q913
Q904,905
DRIVER
Q908,909
8
SWITCHING
BUFFER
9
DRIVER
Q912
Q906,907
D917
D918
11
11
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
LINE
SWITCH
Q302
DIFFERENTIAL
DRIVE
POWER
AMP
AMP
AMP
Q303
Q307
Q309
RV304
BIAS
BIAS
Q311
DIFFERENTIAL
DRIVE
POWER
AMP
AMP
AMP
Q304
Q308
Q310
LINE
SWITCH
Q402
DIFFERENTIAL
DRIVE
POWER
AMP
AMP
AMP
Q403
Q407
Q409
RV404
BIAS
BIAS
Q411
DIFFERENTIAL
DRIVE
POWER
AMP
AMP
AMP
Q404
Q408
Q410
SWITCH
B+
CONTROL
(+23.5V)
Q801,802
PROTECT
DRIVER
B+
Q850
(+23.5V)
+14.2V
B+
REG
(+14.2V)
Q910
D906
B+
(+37V)
D905
B+
D905,906
(+30.5V)
RECT
D907
D907,908
RECT
B –
(–30.5V)
D911,912
D908
RECT
D912
B –
(–37V)
D911
–14.2V
B –
REG
(–14.2V)
D917,918
Q911
RECT
XM-460GTX
CN810
OVER LOAD
FRONT
DET
SPEAKER
Q112
OUT
L
OVER LOAD
DET
Q212
R
CN811
OVER LOAD
REAR
DET
SPEAKER
Q312
OUT
L
(L+R)
OVER LOAD
DET
Q412
R
OFFSET
DET
Q803-805
• Signal path
: AUDIO
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