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