
6
KNA-DV2200
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