Kenwood KDC-X615 Service Manual page 5

CONTROL UNIT
Ref.No. Component Name
IC900 LC75808E LCD driver with key-matrix
IC901 RS-171 Remote control IC
Q900 DTA124EUA Remote SW
Q901 2SD2114K Key illumination green SW
Q902 2SD2114K Key illumination red SW
Q903 DTA124EUA Key-matrix permission SW
Q904 2SC4081 VLCD AVR
Q905 2SC4081 Dimmer SW
CD PLAYER UNIT(X32-4720-00)
Ref.No. Component Name
IC1 AN8806SB RF amplifier
IC2 MN662773KB3 CD signal processor bult-in MI-COM
IC4 BA5917AFP BTL driver
IC5 TA78L05F 5V AVR
IC6 NJM4565MD Low pass filter
Q1 2SB1188 APC
Q2 DTC124EUA P ON SW
Q3 2SA1362(Y) A.8V SW
Q4 2SA1362(Y) D.5V SW
Q5 DTC124EUA MOTOR ON SW
Q8 DTC124EUA GAIN CONTROL SW
COMPONENTS DESCRIPTION
Application/Function
Application/Function
.
KDC-X615,6015
KDC-6080R/RY/RV,7016
Operation/Condition/Compatibility
ON when the base goes "Lo".
ON when the base goes "Hi".
ON when the base goes "Hi".
ON when the base goes "Lo".
ON when the base goes "Hi".
Operation/Condition/Compatibility
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.
Focusing, tracking, sled and spindle servo processing. Auto-
matic adjustment(focusing, tracking, gain, offset and
balance)operations. Digital signal processing (DSP, PLL, sub-
codes, CIRC error correction, audio data interpolaration)operations.
Focusing coil, tracking coil, spindle motor and sled motor driver
LD power control
ON during the CD source selected.
A8V line ON/OFF control
D5V line ON/OFF control
ON during CD loading or eject action .
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