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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
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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
9
12
DRIVER
Q908
REF.
REG
DRIVER
Q909
14
11
10
1
2
LED DRIVER
3
Q904
15
POWER/
16
PROTECTOR
R
(PROTECTOR)
9
9
SWITCH
Q101
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
Q103
Q104
Q108
BIAS
Q106,
107
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
Q102
Q105
Q109
SWITCH
Q201
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
Q203
Q204
Q208
BIAS
Q206,
207
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
Q202
Q205
Q209
MUTE
CONTROL
Q301,302,311
OVERLOAD
PROTECT
Q307,308
DC-DC
CONVERTER
TRANSFORMER
SWITCHING
T901
DRIVER
RECT
Q910
D303
RECT
SWITCHING
D304
DRIVER
Q911
D918
• Signal path
: AUDIO
G
(POWER)
XM-ZR602
CN903 (1/2)
POWER
AMP
L
Q110
OVERLOAD
DET
Q112
(BTL)
POWER
AMP
SPEAKER OUT
Q111
POWER
AMP
R
Q210
OVERLOAD
DET
Q212
POWER
AMP
Q211
+30V
+15V REG
+15V
Q303,304,309
–30V
–15V REG
–15V
Q305,306,310
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