Kenwood KAC-6404 Service Manual page 2

Power amp
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IC1,2
ISO-
AL
AMP
IC1,2
ISO-
AR
AMP
IC3,4
ISO-
BL
AMP
IC3,4
ISO-
BR
AMP
L+
L-
R-
R+
Q610
L+
OVERLOAD
L-
R-
R+
Q3,4
±15V
AVR
IC7
IC9
H.P.F
(80Hz/-12dB)
SENS.
VOL
IC7
IC9
H.P.F
(80Hz/-12dB)
IC8
IC5
L.P.F
SENS.
(50~200Hz
VOL
IC8
Q611-614
TH3,IC10
DC-OFFSET
THERMAL
DET
DET
DET
D4,5
IC13 Q1,2,5-12
DC/DC
±B
CON
Q604 ,605
POWER
ON/OFF
H.P.F
ON /OFF.
Q127,131
ATT
Q128 ,132
ATT
Q227 ,231
ATT
-12dB)
Q228 ,232
ATT
L.P.F
ON /OFF
LC FILTER
FAN
AVR
KAC-7404
Q607
only
FAN
Q103-125
Q101
MUTE
AL
POWER AMP
Q104-126
Q102
MUTE
AR
(INV)
POWER AMP
Q203-225
Q201
MUTE
BL
POWER AMP
Q204-226
Q202
MUTE
BR
(INV)
POWER AMP
P-CON
BATT.
GND

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