5
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
DVD UNIT (X37-1020-00/01)
Ref. No.
Component Name
Application/Function/Operation/Condition
IC1
AN8703FH
RF signal processor
IC2
NJU7042
IOP detector OP amp
IC4
MN103S26E
ATAPI interface, Servo/Spindle/Seek control, DVD ROM/CD ROM digital signal processor, 2M DRAM
IC5
S-80829CLBB
System reset IC
IC6
LA6505
Motor & pickup actuator driver
IC7
DF2328VTE254Q8
System microprocessor
IC8
S-80815CLBB
Voltage detector
IC9
UPC2918T
1.8V AVR
IC10
NJM2880U33
3.3V AVR
IC11
S-24C04BMFN
Backup memory (EPROM)
IC12
HD74LV2G66A
Servo filter on/off control
Q1
2SB0970
Laser diode power supply for CD (APC)
Q3
2SJ0536
Laser diode power supply for DVD (APC)
Q4
UN5114
DVD laser high frequency superposition circuit on-switch
Q5
UN5214
Q6
2SD1819A
5V AVR
Q9
UN5114
Loading motor control ( base L= ON )
Q10
UN5214
Loading motor control ( base H= ON )
Q13
UN5114
EEPROM power control (base L = ON )
Q15
UN5114
FG signal inverter transistor
COMPONENTS DESCRIPTION
System microprocessor : DF2328VTE254Q8 (DVD unit IC7)
Pin No.
Pin Name
I/O
Purpose / Description / Processing / Operation
1
Vcc
-
Power supply input terminal
2~5
A0~A3
O
Address bus
6
Vss
-
GND
7~14
A4~A11
O
Address bus
15
Vss
-
GND
16~21
A12~A17
O
Address bus
22
M2
I
SODC monitor input terminal 2
23
(NC)
-
NC
24
Vss
-
GND
25
SW_AD
I
SW_A+D detect input terminal
26
SW_B
I
SW_B detect input terminal
27
SW_C
I
SW_C detect input terminal
28
M3
I
SODC monitor input terminal 3
29
(NC)
-
NC
30
NINT0
I
SODC interrupt signal 0 input terminal
31
NINT2
I
SODC interrupt signal 2 input terminal
32
NINT1
I
SODC interrupt signal 1 input terminal
MICROCOMPUTER'S TERMINAL DESCRIPTION