Read Sony XM-1004GX Service Manual online
9
9
XM-1004GX
4-1. BLOCK DIAGRAM
SECTION 4
DIAGRAMS
5
6
7
5
6
7
3
2
1
6
5
7
5
7
6
7
6
7
PRE AMP
IC801 (2/2)
PHASE AMP
IC802 (2/2)
5
6
7
3
2
1
LOW BOOST
IC813 (2/2)
LINE AMP
IC813 (1/2)
H.P.F
IC803 (2/2)
L.P.F
IC804 (2/2)
L.P.F
IC805 (2/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q108
DRIVER
AMP
Q105
DIFFERENTIAL
AMP
Q104
POWER
AMP
Q110
DRIVER
AMP
Q107
BIAS
Q106
LEVEL
SHIFT
Q101
LEVEL
FILTER
S801-1
LPF
OFF
HPF
LEVEL
VR803-1
LOW
BOOST
B+
(+14.2V)
B–
(–14.2V)
B+
(+14.2V)
B–
(–14.2V)
CNJ805-1
CNJ805-2
CN809
VR801-1
PHASE
VR802-2
FILTER
VR802-1
FILTER
VR804-1
LINE
SWITCH
Q102
+12V
GND
REM
10
1
2
3
1
3
1
2
1
2
1
PRE AMP
IC801 (1/2)
PHASE AMP
IC802 (1/2)
3
2
1
5
6
7
LOW BOOST
IC814 (2/2)
LINE AMP
IC814 (1/2)
H.P.F
IC803 (1/2)
L.P.F
IC804 (1/2)
L.P.F
IC805 (1/2)
DIFFERENTIAL
AMP
Q203
POWER
AMP
Q208
DIFFERENTIAL
AMP
Q204
MUTE
SWITCH
Q805
POWER
AMP
Q210
DRIVER
AMP
Q207
BIAS
Q206
LEVEL
SHIFT
Q201
VR803-2
LOW
BOOST
(40Hz)
VR801-2
PHASE
VR802-3
FILTER
VR802-4
FILTER
L
HIGH
LEVEL
(INPUT (FRONT))
(INPUT (REAR))
R
L
(BTL)
INPUT
(FRONT)
INPUT
(REAR)
R
CN803
L
BTL
R
VR804-2
LINE
SWITCH
Q202
VR201
BIAS
VR101
BIAS
15
16
2
14
12
REF.
REG
REG
CN801
F901
40A
INVERTER
Q906,907
INVERTER
Q908,909
DRIVER
Q904
DRIVER
Q905
B+ CONT
Q801
B+ CONT
Q802
TEMP DET
D801,804,805,
808,809
11
9
8
3
LD801
THERMAL
OFFSET
(PROTECTOR)
LD803
FRONT
SPEAKER
OUT
LD804
POWER
(PROTECTOR)
(PROTECTOR)
(PROTECTOR)
LD802
OVER
CURRENT
DC-DC
CONVERTER
TRANSFORMER
T901
DC-DC CONVERTER
IC901
SWITCH
Q808
• Signal path
: AUDIO
• Front-ch : same as Rear-ch.
: AUDIO
• Front-ch : same as Rear-ch.
REG
Q901,902
FILTER
S801-2
LPF
OFF
HPF
(40Hz)
OVERLOAD
DET
Q112
OVERLOAD
DET
Q212
CN804
L
BTL
R
REAR
SPEAKER
OUT
3
2
CNJ805-3
CNJ805-4
CN810
L
HIGH
LEVEL
R
L
(BTL)
R
CNJ802
B+
REG
Q910
B–
REG
Q911
B+
(+23.5V)
B+
(+42V)
B+
(+36V)
B+
(+36V)
B–
(–35V)
B–
(–35V)
B–
(–42V)
B–
(–14.2V)
B+
(+14.2V)
LED DRIVE
Q803
SWITCH
Q810
LED DRIVE
Q804
SWITCH
Q806
OFFSET
DET
Q809
OFFSET
DET
Q807
POWER
ON/OFF
Q903
DC DET
IC811
D815
D902
D910
D903
D909
D911
D906
D912
D903
RECT
RECT
D906
RECT
RECT
D909,910
RECT
D911,912
RECT
D907
D904
D908
D905
D904,905,907,908
RECT
TEST TONE
GENERATOR
IC812
(FRONT)
(REAR)
S802
TEST
TEST
TONE
B– (–35V)
D816
1
DRIVER
AMP
Q205
D812
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