LG CED-8042B Manual page 27

IC901 (LA6543)
1) It controls the sled movement and takes the tray to open/close in track search mode.
2) It controls the Focus/Tracking Actuator receiving the focus error or tracking error signal from IC501
Block Diagram
RF
RF
NC
VSS2
VSS2-OUT
MUTE1
VIN1
VG1
VIN2
VG2
VIN3
VG3
VIN4
VG4
MUTE2
VCC
RF
RF
System Diagram (MUTE and Power Sources)
50
Thermal Shut Down
1
MUTE1
2
CH1(VO1~VO2)
3
4
5
VO1~VO2
6
7
Level
Shift
8
9
Level
Shift
1 0
1 1
Level
Shift
1 2
1 3
Level
Shift
1 4
VO3~VO8
1 5
1 6
1 7
1 8
MUTE1
MUTE2
CH2(VO3~VO4)
CH3(VO5~VO6)
MUTE2
CH4(VO7~VO8)
CH1
CH2
CH3
CH4
3 6 RF
3 5
RF
3 4
VSS1
3 3
VSS1-OUT
3 2 VO1
3 1
VO2
3 0
VS1
2 9
VO3
2 8 VO4
2 7
VO5
2 6
VO6
2 5
VS2
2 4 VO7
2 3
VO8
2 2
VREF OUT
2 1
VREF IN
2 0 RF
1 9
RF
VS1
VS2