Diagrams; Block Diagram - Sony XM-ZR602 Service Manual

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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
XM-ZR602
SECTION 3

DIAGRAMS

PRE AMP
IC301 (1/2)
2
CR
1
3
FILTER
SW301-1
SW301
LPF(80Hz)
PRE AMP
OFF
IC301 (2/2)
ON
5
CR
7
FILTER
6
SW301-2
POWER
ON/OFF
Q903
DC DET
IC902
B+
SWITCH
Q902
PROTECTOR
DETECT
THERMAL DET
Q905,906
Q912,913
D903
D902
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
DRIVER
12
DRIVER
Q908
REF.
REG
DRIVER
Q909
14
11
SWITCHING
10
DRIVER
1
2
LED DRIVER
3
Q904
15
D918
POWER/
16
PROTECTOR
R
(PROTECTOR)
(POWER)
9
9
SWITCH
Q101
POWER
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
AMP
Q110
Q103
Q104
Q108
BIAS
OVERLOAD
Q106,
DET
107
Q112
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
AMP
Q102
Q105
Q109
Q111
SWITCH
Q201
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
AMP
Q210
Q203
Q204
Q208
OVERLOAD
BIAS
DET
Q206,
207
Q212
DIFFERENTIAL
DRIVE
DRIVE
POWER
AMP
AMP
AMP
AMP
Q202
Q205
Q209
Q211
MUTE
CONTROL
Q301,302,311
OVERLOAD
PROTECT
Q307,308
DC-DC
CONVERTER
TRANSFORMER
T901
RECT
Q910
D303
RECT
D304
Q911
• Signal path
: AUDIO
G
XM-ZR602
CN903 (1/2)
L
(BTL)
SPEAKER OUT
R
+30V
+15V REG
+15V
Q303,304,309
–30V
–15V REG
–15V
Q305,306,310

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