Cd Player Unit Components - Kenwood KDC-W4044UA Service Manual

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