5
KDC-W4044UA/W4044UAY/W4044UG/W4044UGY
KDC-W413UA/W413UAY/W4544U/W4644UY
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CD PLAYER UNIT (X32-6250-00)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC3
4ch BTL Driver
Driver for focusing & tracking coil, driver for sled & spindle motor, and operation for disc
loading & ejection.
IC4
Servo DSP with built-in Audio DAC With built-in MP3/WMA/ACC decoder and 1M-bit-SRAM.
IC5
BU1.5V/D3.3V REG.
Power supply for BU1.5V.
Power supply for digital/analogue/audio 3.3V.
Q1
APC (Auto Power Control)
Drives LD (Laser Diode).
Q14
D1.5V Output
Switches ON/OFF at one end of BU1.5V line which is separated into 2 directions.
Uses output voltage as D1.5V.
D2
Laser Diode Protection
Prevents reverse bias which is applied to laser.
Laser destruction prevention.
D3,4
Static Electricity Countermeasure
Prevents malfunction by static electricity.
COMPONENTS DESCRIPTION