10
KVT-50DVDRY/512/522DVD
/522DVDY/532DVD/532DVDM
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC4
Optical disc control IC in
μ
-com
Optical DISC general control / ATAPI interface
IC5
Voltage detection IC
For system resetting of optical DISC control IC
IC7
3.3V power supply
5V
→
3.3V
IC8
Voltage detection IC
For 1.5V power supply IC voltage monitor
IC9
1.5V power supply
5V
→
1.5V
IC10
Driver IC
Focus coil, Tracking coil, Spindle motor, Sled motor and Lo/Ej motor drive
IC11
EEPROM
Maintain data for optical DISC control IC
IC12
OP-AMP for Iop measurement
For IOP measurement
Q1
Register integrated transistor
SL. MUTE control
Q2
Register integrated transistor
For FG signal
Q3
Register integrated transistor
LO.MUTE control
Q4
Register integrated transistor
DRMU control
Q5
MOS-FET
Laser diode ON/OFF control for DVD
Q6
MOS-FET
Laser diode ON/OFF control for CD
Q12
Transistor for APC
Laser diode brightness control for CD
Q13
Transistor for APC
Laser diode brightness control for DVD
Q14
MOS-FET
For IOP measurement
Q15
Register integrated transistor
HFM ON/OFF control
Q18,19
Register integrated transistor
3.3V power supply IC ON timing control
COMPONENTS DESCRIPTION