Read Sony XM-ZR602 Service Manual online
9
9
XM-ZR602
XM-ZR602
3-1. BLOCK DIAGRAM
2
3
PRE AMP
IC301 (1/2)
2
3
L.P.F
IC302 (1/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q110
OVERLOAD
DET
Q112
DRIVE
AMP
Q104
DRIVE
AMP
Q108
DIFFERENTIAL
AMP
Q102
POWER
AMP
Q111
DRIVE
AMP
Q105
DRIVE
AMP
Q109
BIAS
Q206,
207
CNJ901
D906
INPUT
L
(BTL)
SPEAKER OUT
L
R
SWITCH
Q101
REM
+12V
GND
9
DIFFERENTIAL
AMP
Q203
POWER
AMP
Q210
OVERLOAD
DET
Q212
DRIVE
AMP
Q204
DRIVE
AMP
Q208
DIFFERENTIAL
AMP
Q202
POWER
ON/OFF
Q903
MUTE
CONTROL
Q301,302,311
POWER
AMP
Q211
DRIVE
AMP
Q205
DRIVE
AMP
Q209
CN901
L
HIGH LEVEL
INPUT
R
SWITCH
Q201
OVERLOAD
PROTECT
Q307,308
Q307,308
15
16
1
2
14
12
B+
SWITCH
Q902
OVER VOLTAGE
DETECT
Q901
DC DET
IC902
REF.
REG
REG
TEMP. DET
TH901-903
TH901-903
THERMAL DET
Q912,913
CN903 (2/2)
F901
RECT
D303
D303
RECT
D304
D304
+15V
+30V
SWITCHING
DRIVER
Q910
SWITCHING
DRIVER
Q911
DRIVER
Q909
PROTECTOR
DETECT
Q905,906
DRIVER
Q908
8
10
3
11
D918
POWER/
PROTECTOR
DC-DC
CONVERTER
TRANSFORMER
T901
DC-DC CONVERTER
IC901
D902
D903
• Signal path
: AUDIO
: AUDIO
CN903 (1/2)
(BTL)
-1
-2
LED DRIVER
Q904
R
(PROTECTOR)
G
(POWER)
R
1
1
CR
FILTER
OFF
ON
SW301-1
VR301-1
SW301
LPF(80Hz)
30A
VR301
LEVEL
2
1
GAIN CONTROL AMP
IC303 (1/2)
GAIN CONTROL AMP
IC303 (2/2)
5
PRE AMP
IC301 (2/2)
6
5
L.P.F
IC302 (2/2)
7
7
CR
FILTER
SW301-2
VR301-2
6
7
6
+15V REG
Q303,304,309
–15V
–30V
–15V REG
Q305,306,310
BIAS
Q106,
107
SENSING POWER ON
SECTION 3
DIAGRAMS
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