Kenwood KNA-DV2200 Service Manual page 6

KNA-DV2200
Ref.No. Component Name
IC7 L88MS05T
IC8 LA6563
IC9 BD6661FV
IC10 NJU7096AR
IC11 SN74AHC1G08D
IC12 NJM2125F
IC13 SN74AHC1G08D
IC14 CXD1867R
IC15 L88M33T
IC16 IS41C16256
IC17 SN74AHC2GU04H
IC19 SN74AHC1GU04D
IC20 CXD3008Q
IC21 L88MS05T
IC22 HD6433062G24XI
IC23 BR24C04FV-W
Q1 MCH6101
Q2 MCH6101
Q3 2SB1295
Q5 DTC124EUA
Q4 3LN01M
Q6 3LP01M
Q7 DTC124EUA
Q8 2SB1295
Q9 DTC124EUA
Q10 2SC4081
Q11 2SA1576A
Q12 2SC4081
Q13 DTC124EUA
Q27 CPH3105
Q14 2SB1295
Q15 DTC124EUA
Q16 3LP01M
Q17 DTC124EUA
Q18 DTC124EUA
Q23 DTC124EUA
Q24 2SB1295
Q25 3LN01M
Q26 UMC2N
6
COMPONENTS DESCRIPTION
Application/Function
5V AVR IC 5V output for RF amplifier, pickup and servo circuits
4ch BTL driver Focusing coil, tracking coil, sled motor and lording motor driver
3 phase motor driver PWM driving
Op.amp. Spindle servo signal amplifier (LPF, gain matching)
AND IC14 reset controler
Op.amp. VC2 (1.65V) buffer
AND IC20 clock on/off gate
CD-ROM/DVD data decoder, ATAPI I/F, AV decoder I/F, DVD PLL, DVD
Data decoder IC
error collection, Buffered Audio Play, Subcode data
AVR IC 3.3V output for IC14
DRAM EDO DRAM 4M
Inverter Clock oscilator for IC14 and IC20, and buffer (33.86MHz)
Inverter "HRES–" inverter
CD PLL, CD error corection operation, digital servo (focusing, tracking,
Digital signal processor IC
and sled) function, automatic adjustment
AVR IC 5V output for IC14, IC20 and digital circuits
Mechanism control MI-COM.
EEPROM Data backup memory (coefficient and others)
DVD APC DVD laser power control
CD APC CD laser power control
DVD laser high-frequency
redundancy circuit SW frequency redundancy circuit is working.
DFT level converter
Layer jump monitor
Layer gain select SW When a base becomes "Hi", Q7 is turned on and sets the gain to Lo.
Sled movement detection When Q9's base becomes "Hi", Q8 is turned on and 5V power supply is
circuit on/off SW supplied.
Layer jump control SW For Lo kicking
For Hi kicking
Layer jump control SW
When Q12's base becomes "Hi", Q11 is turned on.
IC20 power supply SW When Q13's base becomes "Hi", Q27 is turned on.
Disc detection circuit SW When Q15's base becomes "Hi", Q14 is turned on.
FDCHG inverter FDCHG logic reversal
HRES- inverter
IC7 power supply SW When a base becomes "Hi", Q18 is turned on and AVR is working.
IC9 VCC SW When Q23's base becomes "Hi", Q24 is turned on and IC9 is working.
MIRR level conversion
IFSEL SW When a base becomes "Hi", Q26 is turned on.
Operation/Condition/Compatibility
When Q5's base becomes "Hi", Q3 is turned on and DVD laser high-