KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
5
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
IC9
BUFFER
Functions when controlling fruorescent indicator tube (ED1)
IC10
2.5V REGULATOR
For 2.5V power supply
IC11
3.3V REGULATOR
For 3.3V power supply
Q1
TRIANGLE GREEN LED SW
Lights up when base is “H”
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 (X32-5730-00)
Ref. No.
Application / Function
Operation / Condition
IC1
µ
-com for mechanism control
IC2
LSI for CD signal procRF AMP
IC4
BTL driver
SP, SL (including LO/EJ) motor and PU actuator
IC5
SW3.3V regulator
3.3V power supply for IC2, PU, and IC18 digital section
IC13
Audio active filter
Secondary LPF
IC14
A5V regulator
5V power supply for DAC
IC15
Compacted audio decoding DSP
AC drive decoder, MP3/WMA/AAC decoder
IC16
Compacted audio expanding SDRAM
IC17
Decoder software, unique ID storage flash ROM
IC18
Audio external 24-bit D-A converter
3.3V power supply for
µ
-com
1.8V power supply for core section of IC15
Decoder/SDRAM/Flash ROM 3.3V regulator
3.3V power supply for port section of IC15, IC16 and IC17
Level shift (3.3V~5V) transistor with 2 elements
Level shift (3.3V~5V) transistor
APC (Auto Power Control) transistor
Transistor for preceding beam delaying SW during non-search
A5V power supply constant circuit FET
Q12,13
SW8V SW transistor
Q14,15
SDRAM 3.3V power supply SW transistor
SDRAM power supply is turned off when /CSRST is “L”
D2
UPD63712GC built-in resetting terminal static protection diode
D3
Protection diode for pick-up laser diode
D4,D5
Diode for securing audio L-R reference voltage
D6
Diode for control terminal’s “L” confirmation for IC20 and IC21
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