Read Sony XM-460GTX Service Manual online
11
11
XM-460GTX
4-2. BLOCK DIAGRAM
3
2
1
3
2
2
1
PRE AMP
IC801 (1/2)
LINE AMP
IC802 (1/2)
5
6
7
LOW BOOST
IC806 (2/2)
HPF
IC806 (1/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q109
DRIVE
AMP
Q107
DIFFERENTIAL
AMP
Q104
POWER
AMP
Q110
DRIVE
AMP
Q108
BIAS
Q111
BOOST
GAIN
Q101
Q101
FILTER
S801-1
HPF
OFF
B+
(+14.2V)
B–
(–14.2V)
B+
(+14.2V)
B–
(–14.2V)
CNJ100-1
CNJ100-2
CNJ802 (1/2)
RV801-2
FILTER
RV803-1
LEVEL
RV801-1
FILTER
LINE
SWITCH
Q102
+12V
GND
10
7
5
6
PRE AMP
IC801 (2/2)
LINE AMP
IC802 (2/2)
5
6
7
LOW BOOST
IC807 (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
BOOST
GAIN
Q201
Q201
RV802-2
LOW
BOOST
(40Hz)
RV802-1
LOW
BOOST
(40Hz)
RV805-1
LOW
BOOST
(40Hz)
RV805-2
LOW
BOOST
(40Hz)
-1
L
-5
L
-6
R
-2
R
L
(FRONT)
INPUT
(REAR)
INPUT
R
CN810
L
R
LINE
SWITCH
Q202
RV204
BIAS
RV104
BIAS
15
16
1
2
14
12
TEMP.DET
THN801,804-807
REF.
REG
REG
CN800
F901
25A
SWITCHING
DRIVER
Q904,905
SWITCHING
DRIVER
Q906,907
DRIVER
Q908,909
BUFFER
Q913
BUFFER
Q912
11
9
8
3
D811
POWER/
PROTECTOR
FRONT
SPEAKER
OUT
DC-DC
CONVERTER
TRANSFORMER
T801
DC-DC CONVERTER
IC901
• Signal path
: AUDIO
: AUDIO
2
3
1
POWER
SWITCH
Q901
FILTER
S801-2
HPF
OFF
OVER LOAD
DET
Q112
OVER LOAD
DET
Q212
CN811
L
(L+R)
R
REAR
SPEAKER
OUT
6
5
CNJ100-3
CNJ100-4
CNJ802 (2/2)
L
(L+R)
R
(L+R)
REM
PL802
(PILOT LAMP)
+14.2V
REG
Q910
–14.2V
REG
Q911
B+
(+23.5V)
B+
(+23.5V)
B+
(+37V)
B+
(+30.5V)
(–30.5V)
(–37V)
(–14.2V)
B –
B –
B –
B+
(+14.2V)
PROTECTION
Q812-814
PROTECT
DRIVER
Q850
OFFSET
DET
Q803-805
POWER
ON/OFF
Q903
DC DET
IC902
D903
D906
D905
D904
D917
D912
D911
D918
D905,906
RECT
D911,912
RECT
D903,904
RECT
D917,918
RECT
D907,908
RECT
D907
D908
(FRONT)
(REAR)
-3
L
-4
R
-8
R
-7
L
HIGH
LEVEL
INPUT
INPUT
(REAR)
HIGH
LEVEL
INPUT
INPUT
(FRONT)
F902
25A
1
3
RV806-1
LEVEL
2
1
HPF
IC807 (1/2)
RV801-3
FILTER
RV803-2
LEVEL
RV801-4
FILTER
3
7
7
5
6
7
3
1
6
7
6
7
PRE AMP
IC808 (1/2)
LINE AMP
IC809 (1/2)
3
2
1
LOW BOOST
IC813 (2/2)
HPF
IC811 (1/2)
BPF
IC811 (2/2)
LPF
IC813 (1/2)
DIFFERENTIAL
AMP
Q303
POWER
AMP
Q309
DRIVE
AMP
Q307
DIFFERENTIAL
AMP
Q304
POWER
AMP
Q310
DRIVE
AMP
Q308
BIAS
Q311
BOOST
GAIN
Q301
Q301
B+
(+14.2V)
B–
(–14.2V)
B+
(+14.2V)
B–
(–14.2V)
RV804-1
FILTER
RV804-2
FILTER
LINE
SWITCH
Q302
1
3
2
1
3
1
6
7
6
7
PRE AMP
IC808 (2/2)
LINE AMP
IC809 (2/2)
3
2
1
LOW BOOST
IC814 (2/2)
HPF
IC812 (1/2)
BPF
IC812 (2/2)
LPF
IC814 (1/2)
DIFFERENTIAL
AMP
Q403
POWER
AMP
Q409
DRIVE
AMP
Q407
DIFFERENTIAL
AMP
Q404
POWER
AMP
Q410
DRIVE
AMP
Q408
BIAS
Q411
BOOST
GAIN
Q401
Q401
RV804-3
FILTER
RV804-4
FILTER
LINE
SWITCH
Q402
RV404
BIAS
RV304
BIAS
FILTER
S802-1
LPF
OFF
HPF
FILTER
S802-2
LPF
OFF
HPF
OVER LOAD
DET
Q412
3
OVER LOAD
DET
Q312
6
5
2
RV806-2
LEVEL
BUFFER
Q810
LED
SWITCH
Q808
R
G
VCC
REF
D829
D828
LED
SWITCH
Q809
OVER
VOLTAGE
DETECT
Q902
Click on the first or last page to see other XM-460GTX service manuals if exist.