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ELECTRIC UNIT (X34-3402-7x)
Ref. No.
Application / Function
SYSTEM µ-COM
IC1
IC3
POWER SUPPLY
IC4
POWER IC
IC6
MUTE LOGIC
IC7
RDS DECODER
IC8
RESET
IC10
E-VOL & TUNER
IC11
E2PROM
IC15
VFD REGULATOR
Q51
SERGE DET
Q52
BU DET
Q53
ACC DET
Q71
SERVO+B CONTROL SW
Q72,73
SERVO+B AVR
Q74
IC3 CONTROL SW
Q151
PANEL 5V SW
Q155
DSI ILLUMI SW
Q252
IC4 STBY SW
Q330
Q351, 352 MUTE DRIVER
Q351
Lch PRE MUTE SW
Q352
Rch PRE MUTE SW
Q501
AM RF AMP
CD PLAYER UNIT (X32-5500-00)
Ref. No.
Application / Function
MECHANISM CONTROL
IC1
MICROPROCESSOR
RF AMP/SERVO CD
IC2
SIGNAL PROCESSOR
IC3
MP3/WMA DECODER
IC4
4ch BTL DRIVER
IC5
SW 3.3V AVR
IC6
BU 3.3V AVR
IC7
BU 2.5V AVR
COMPONENTS DESCRIPTION
System control.
DC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output.
Audio signal amplifier.
Mute control.
RDS decode.
"L" when detection voltage goes below 3.6V.
E-VOL, Tuner, Stereo decode.
Saves and writes tuner adjustment data.
11.3V output voltage for LED and VFD.
"ON" when the base goes "H".
"ON" when the base goes "H".
"ON" when the base goes "H".
"ON" when the base goes "H".
Output voltage level : 7.5V.
"ON" when the base goes "H" (Output voltage : 10.3V).
"ON" when the base goes "L".
"ON" when the base goes "L".
"ON" when the base goes "L".
"ON" when the base goes "L".
Pre-output is muted when the base goes "H".
Pre-output is muted when the base goes "H".
Adjusts for AM-RF gain.
Focusing, tracking, sled and spindle servo processing.
Automatic adjustment (Focusing, tracking, gain, offset and balance) operations.
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation) operations, and microcomputer function.
Generation of RF signal based on the signals from the APC circuit and pickup, and
generation of servo error (Focusing error and tracking error) signals.
Detection of dropout, anti-shock, track crossing and off-track conditions, included
gain control function during CD-RW.
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
3.3V power supply for back-up.
2.5V power supply for back-up.
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
Operation / Condition
Operation / Condition
3
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