Block Diagram; Components Description - Kenwood KAC-X40 Service Manual

KAC-X40
IC2
AL ISO-AMP
IC1
AR ISO-AMP
IC3,4
BL ISO-AMP
IC3,4
BR ISO-AMP
L
R
Q215-218,
415-418
OVERLOAD
DET
Q1,2,15-17
15V
AVR
PREAMPLIFIER UNIT (X08-4330-10)
Ref. No.
IC1
IC4
IC6
IC7~8
IC9
IC10
2

BLOCK DIAGRAM

(X08-433)
IC1
H.P.F
(40-200Hz)
IC1
H.P.F
(40-200Hz)
ST/
MONO
SEL
IC4
L.P.F
(40-200Hz)
ST/ A/AB
MONO SEL
SEL
POWER
INDI.
Q611-614 TH601-605
DC-OFFSET THERMAL
DET DET
D5,6 IC5 Q3-14
DC/DC
B LC FILTER
CON
Q605,606
POWER
ON/OFF
Q684,685
FAN FAN AVR

COMPONENTS DESCRIPTION

Application / Function
HPS
LPF
HPF
BASS_BOOST
X08 signal output
X08 signal output
IC9
Q280,283
ATT
H.P.F SEL.
SENS.
VOL
IC9
Q282,284
ATT
IC6
H.P.F
(40-200Hz)
IC6
H.P.F
(40-200Hz)
L.P.F SEL.
H.P.F SEL.
Q481,483
ATT
Q482,484
ATT
P-CON
BATT.
GND
Operation / Condition / Compatibility
HPF at side A 40-200Hz
LPF at side B 40-200Hz
HPF at side B 40-200Hz
BASS_BOOST at side B 40-100Hz_0-18dB
Lch output buffer at A side, Rch phase inversion, and output buffer
Lch output buffer at B side, Rch phase inversion, and output buffer
POWER AMP
Q241
MUTE
POWER AMP
Q242
MUTE
IC7
IC10
BASS
BOOST
SENS.
VOL
IC8
IC10
BASS
BOOST
POWER AMP
Q443
MUTE
POWER AMP
Q444
MUTE
70W x 4ch / 4
100W x 4ch /2
AL
AR
(INV)
BL
BR
(INV)