4
KDC-MP5029/W5031
/W5031Y/W531Y
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
IC3
MP3/WMA DECODER
IC4
4ch BTL DRIVER
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
IC5
SW 3.3V AVR
IC6
BU 3.3V AVR
3.3V power supply for back-up.
IC7
BU 2.5V AVR
2.5V power supply for back-up.
IC8
SELECTOR (SERIAL DATA)
Serial audio data switch.
IC9
DAC 3.3V AVR
3.3V power supply for IC2.
Q1
LEVEL SHIFT
3.3V to 5.0V.
Q3~7
LEVEL SHIFT
3.3V to 5.0V.
Q8
AUTOMATIC POWER CONTROL
LD driver.
Q9,10
SWITCH
Switch for anticipation sub-beam delay.
●
SWITCH UNIT (X16-291x-xx)
Ref. No.
Application / Function
Operation / Condition
IC1
VFD DRIVER
IC2
REMOTE CONTROL
Q4
SW 5V
The power supply of IC2 turns on when Q4’s base goes “L”.
Q10
RED LED SW
RED LED turns on when Q10’s base goes “H”.
Q11
GREEN LED SW
GREEN LED turns on when Q11’s base goes “H”.
●
DAUGHTER UNIT (X89-2690-10)
Ref. No.
Application / Function
Operation / Condition
Q221, 222
2-PREOUT MUTE
“ON” when the base goes “H”.
Q225
2-PREOUT MUTE
“ON” when the base goes “H”.