X92-4470-0x
2
BLOCK DIAGRAM
Mother Board
IC10
IC12
Pick-Up
R-ch
L-ch
7
IC6
A.GND
A
Q2
C
IC11
Q4
9
Q5
D.GND
Vref
D.GND
IC5
Q1
D.GND
D.GND
SW5V
/PON
Bu.+5V
Q3
IC2
X2
X3
D.GND
9
16
IC3
IC4
16.93MHz
S3
Loe/Lim SW
IC8
S4
8Eje SW
S2
12Eje SW
S.GND
D.GND
S1
D.GND
Los SW
S.GND
D4.7V
D3.3VReg
Fo Coil
Tr Coil
A.+8V
Loading & Sled
Motor
Spindle Motor
SW
PON
2.5V Reg
Motor Driver
SW
SW
Motor
S7.5V
Lo/Ej
0-01 Only
A.GND
A.GND
A3.3 Reg
E
APC
µ
-Com
DRAM
8V SW
1Chip IC
Servo Processor
+
RF Amp
+
MP3 Decorder
WMA Decorder
LPF
Clock
16.93MHz
Clock
24.57MHz
F
30
B
D
●
CD PLAYER UNIT (X32-5220-0x)
Ref.No.
Application/Function
Operation/Condition/Compatibility
IC2
D3.3V AVR
Power supply for the pickup, IC5, IC8-10 and IC11
IC3
D2.5V AVR
Power supply for IC8
IC4
4CH BTL driver
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
IC5
Mecha. control MI-COM.
IC6
A3.3V AVR
Power supply for DAC, LPF operational reference voltage
IC7
Level shifting (3.3V
→
5V)
Buffer and logic level conversion from IC10 to IC5
IC8
WMA decoder
IC9
Clock buffer for WMA
IC10
RF amCD DSP+MP3 decoder
IC11
4M bit DRAM
For data buffer
IC12
Low pass filter
2nd low pass filter for audio signals
IC13
Schmitt trigger for WMA
Q1
SW5V SW
When PON (11pin) goes Lo, Q1 is turned on, and SW5V is supplied to IC7 and
AVREF (73PIN).
Q2
APC
LD power control
Q3
D3.3V SW
When PON (10pin) goes Hi, Q3 is turned on, and IC2 is working.
Q4
A.8V SW
When PON (10pin) goes Hi, Q4 and Q5 are turned on, and A.8V is supplied to IC6
Q5
and IC12.
COMPONENTS DESCRIPTION