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Diagrams; Block Diagram - Sony XM-GTX6020 Service Manual

Stereo power amplifier
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3-1.

BLOCK DIAGRAM

CNJ901
L
-1
(BTL)
INPUT
R
-2
D906
CN901
L
HIGH LEVEL
INPUT
SENSING POWER ON
R
CN903 (2/2)
REM
OVER VOLTAGE
DETECT
Q901
+12V
F901
30A
GND
D903 (2/2)
XM-GTX6020/GTX6022
SECTION 3

DIAGRAMS

PRE AMP
IC301 (1/2)
2
CR
1
3
FILTER
SW301-1
SW301
LPF(80Hz)
OFF
ON
PRE AMP
IC301 (2/2)
5
CR
7
6
FILTER
SW301-2
POWER
ON/OFF
Q903
DC DET
IC902
B+
SWITCH
Q902
PROTECTOR
DETECT
THERMAL DET
Q905,906
Q912,913
D902,
D903 (1/2)
TEMP. DET
TH901-903
L.P.F
GAIN CONTROL AMP
IC302 (1/2)
IC303 (1/2)
2
1
2
1
3
VR301-1
VR301
LEVEL
L.P.F
GAIN CONTROL AMP
IC302 (2/2)
IC303 (2/2)
6
7
6
7
5
VR301-2
DC-DC CONVERTER
IC901
8
SWITCHING
9
12
DRIVER
Q908
REF.
REG
DRIVER
Q909
14
11
SWITCHING
10
1
2
LED DRIVER
3
Q904
15
D918
16
POWER/
PROTECTOR
R
(PROTECTOR)
(POWER)
9
9
SWITCH
Q101
POWER
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
Q103
Q104
Q108
BIAS
OVERLOAD
Q106,
107
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
Q102
Q105
Q109
SWITCH
Q201
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
Q203
Q204
Q208
OVERLOAD
BIAS
Q206,
207
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
Q202
Q205
Q209
MUTE
CONTROL
Q301,302,311
OVERLOAD
PROTECT
Q307,308
DC-DC
CONVERTER
TRANSFORMER
T901
DRIVER
RECT
Q910
D303
RECT
D304
DRIVER
Q911
: AUDIO
G
XM-GTX6020/GTX6022
CN903 (1/2)
AMP
L
Q110
DET
Q112
(BTL)
AMP
SPEAKER OUT
Q111
AMP
R
Q210
DET
Q212
AMP
Q211
+30V
+15V REG
+15V
Q303,304,309
–30V
–15V REG
–15V
Q305,306,310

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This manual is also suitable for:

Xm-gtx6022