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KDC-MP4032
SWITCH UNIT (X16-3490-10)
Ref. No.
Application / Function
IC2
Remote Control IC
Q4,5
SW5V
Q12
GRID1 SW
Q13
GRID2 SW
Q14
GRID3 SW
Q20
Key Scan Start SW
CD PLAYER UNIT (X32-5860-00)
Ref. No.
Application / Function
IC1
A3.3V regulator
IC2
Ope amp for low-pass filter
IC3
4ch BTL driver
Mechanism µ-com
IC4
IC5
BU 3.3V regulator
IC6
D3.3V regulator
IC7
Audio DAC built-in servo DSP
IC11
Buffer IC
Q1
A3.3V discharge circuit
Q4
Current amp
Q5,6
SW 5V
Q7,8
SW 8V
D1
For current amp
4
COMPONENTS DESCRIPTION
The base of Q4 goes "L" when the base of Q5 is "H" and the power supply of IC2 is turned on.
When the base of Q12 is "L", the current is supplied to G1.
When the base of Q13 is "L", the current is supplied to G2.
When the base of Q14 is "L", the current is supplied to G3.
Key scan starts when the base of Q20 goes "H".
Power supply for audio 3.3V
Driving spindle motor and loading/ejection operation
Power supply for backup 3.3V
Digital 3.3V power supply
MP3, WMA, and AAC compatible
Level shift
Adjusts current to be sent to laser
Operation / Condition
Operation / Condition
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