KDC-MP628/MP7028/MP728
MP8029/W7031/W7031Y
5
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
Q2
TRIANGLE RED LED SW
Lights up when base is “H”
Q3
BLUE LED SW
Lights up when base is “H”
Q4
GREEN LED SW
Lights up when base is “H”
Q5
RED LED SW
Lights up when base is “H”
Q6
SW3.3V SW
When base is “L”, SW3.3V is supplied to IC1 and IC3
Q7,8
SW5V SW
When Q8 base is “H”, SW5V is supplied to IC2 and IC6
Q9,10
FL3.3V SW
When Q9 base is “H”, FL+3.3V (VDD1) is supplied to fruorescent indicator tube
Q12
FL BLK SW
When base is “H”, fruorescent indicator tube (ED1) lights up
Q11,13
FL+B SW
When Q11 base is “H”, FL+B (VDD2) is supplied to fruorescent indicator tube
●
CD PLAYER UNIT (X32-5740-0x)
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
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
IC8
Memory IC
Used only for 0-02 destination
IC11
Buffer IC
Level shift
Q1
A3.3V discharge circuit
Q4
Electric AMP
Adjusts current to be sent to laser
Q5,6
SW 5V
Q7,8
SW 8V
D1
For electric AMP