Block Diagram; Components Description - Kenwood KAC-X10D Service Manual
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Also See for KAC-X10D:
- Training manual (52 pages) ,
- Instruction manual (21 pages) ,
- Instruction manual (12 pages)
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KAC-X10D
L
R
L
LINE OUT
SEL.
R
REM
LEVEL
0-18dB
FREQ
40-100Hz
AUDIO UNIT (X09-8590-10)
Ref. No.
IC1,2
Isolation AMP
IC3
Buffer AMP
IC4
Mixing AMP and buffer AMP
IC5~7
Bass Boost circuit (remote control operation)
IC8
L.P.F
IC9
I.S.F
IC10
D-class phase input AMP
IC11
PWM signal generating circuit
IC12
Triangular wave reversal and DC servo circuit
IC13
PWM signal generating circuit and latch circuit
2
BLOCK DIAGRAM
IC1
SENS.
ISO-AMP
IC4 (1/2)
VOL
L/R MIX
IC2
ISO-AMP
S1
S1
IC10 (2/2)
IC11
SUMMING
COMP
AMP
IC10 (1/2)
IC13
TRIANGLE
COMP
WAVE
IC12 (1/2)
I.N.V
Q319-322
15V
AVR
COMPONENTS DESCRIPTION
Application / Function
IC4 (2/2)
IC5 (2/2),6,7
IC8
BASS
L.P.F
BOOST
FREQ
(40-200Hz)
Q3,4
Q2
ATT
MUTE
IC14,16
Q6,7
Q8-11
DEAD
LEVEL
DRIVE
TIME
SHIFT
IC15,16
Q14,15
Q16-19
DEAD
LEVEL
DRIVE
TIME
SHIFT
Q5,22
D-AMP
ON/OFF
IC34
IC37
OVERLOAD
THERMAL
DET
DET
Q325
+HB
B
AVR
IC36
DC/DC
CON
Q301,302
POWER
ON/OFF
Operation / Condition / Compatibility
Removal of common mode noise on input signal
Buffer AMP for RCA output
It mixes input stereo signals into monaural signals. GAIN=0dB
It boosts signals by the operation of the remote control.
GAIN=0~+18dB, fc=40~100Hz
40~200Hz -24dB/oct
OFF/15Hz/25Hz switchable -24dB/oct
Generation of triangular wave, and generation of PWM signal by
comparing triangular and sine wave.
It feeds back the triangular wave reversal and DC voltage offset.
Circuit to generate PWM signal by comparing triangular and sine wave.
Circuit to latch when 1Ω load is detected.
IC9
I.F.S
S2
15Hz
I.S.F
SEL.
25Hz
IC38
1
LIMIT
Q701-704
FINAL
MOS-FET
LC FILTER
Q705-708
FINAL
MOS-FET
300W / 4
600W / 2
IC17
600W / 1
NF AMP
IC35
DC-OFFSET
DET
POWER
INDI.
L1
LC FILTER
P-CON
BATT.
GND
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