Diagrams; Block Diagram - Sony XM-GTX6020 Service Manual

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