6
KNA-DV
2200
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC7
L88MS05T
5V AVR IC
5V output for RF amplifier, pickup and servo circuits
IC8
LA6563
4ch BTL driver
Focusing coil, tracking coil, sled motor and lording motor driver
IC9
BD6661FV
3 phase motor driver
PWM driving
IC10
NJU7096AR
Op.amp.
Spindle servo signal amplifier (LPF, gain matching)
IC11
SN74AHC1G08D
AND
IC14 reset controler
IC12
NJM2125F
Op.amp.
VC2 (1.65V) buffer
IC13
SN74AHC1G08D
AND
IC20 clock on/off gate
IC14
CXD1867R
Data decoder IC
CD-ROM/DVD data decoder, ATAPI I/F, AV decoder I/F, DVD PLL, DVD
error collection, Buffered Audio Play, Subcode data
IC15
L88M33T
AVR IC
3.3V output for IC14
IC16
IS41C16256
DRAM
EDO DRAM 4M
IC17
SN74AHC2GU04H
Inverter
Clock oscilator for IC14 and IC20, and buffer (33.86MHz)
IC19
SN74AHC1GU04D
Inverter
“HRES–” inverter
IC20
CXD3008Q
Digital signal processor IC
CD PLL, CD error corection operation, digital servo (focusing, tracking,
and sled) function, automatic adjustment
IC21
L88MS05T
AVR IC
5V output for IC14, IC20 and digital circuits
IC22
HD6433062G24XI
Mechanism control MI-COM.
IC23
BR24C04FV-W
EEPROM
Data backup memory (coefficient and others)
Q1
MCH6101
DVD APC
DVD laser power control
Q2
MCH6101
CD APC
CD laser power control
Q3
2SB1295
DVD laser high-frequency
When Q5’s base becomes “Hi”, Q3 is turned on and DVD laser high-
Q5
DTC124EUA
redundancy circuit SW
frequency redundancy circuit is working.
Q4
3LN01M
DFT level converter
Q6
3LP01M
Layer jump monitor
Q7
DTC124EUA
Layer gain select SW
When a base becomes “Hi”, Q7 is turned on and sets the gain to Lo.
Q8
2SB1295
Sled movement detection
When Q9’s base becomes “Hi”, Q8 is turned on and 5V power supply is
Q9
DTC124EUA
circuit on/off SW
supplied.
Q10
2SC4081
Layer jump control SW
For Lo kicking
Q11
2SA1576A
Layer jump control SW
For Hi kicking
Q12
2SC4081
When Q12’s base becomes “Hi”, Q11 is turned on.
Q13
DTC124EUA
IC20 power supply SW
When Q13’s base becomes “Hi”, Q27 is turned on.
Q27
CPH3105
Q14
2SB1295
Disc detection circuit SW
When Q15’s base becomes “Hi”, Q14 is turned on.
Q15
DTC124EUA
Q16
3LP01M
FDCHG inverter
FDCHG logic reversal
Q17
DTC124EUA
HRES- inverter
Q18
DTC124EUA
IC7 power supply SW
When a base becomes “Hi”, Q18 is turned on and AVR is working.
Q23
DTC124EUA
IC9 VCC SW
When Q23’s base becomes “Hi”, Q24 is turned on and IC9 is working.
Q24
2SB1295
Q25
3LN01M
MIRR level conversion
Q26
UMC2N
IFSEL SW
When a base becomes “Hi”, Q26 is turned on.
COMPONENTS DESCRIPTION