LG GSA-4167B Service Manual page 80

3. Loading Sequence Error (Lead in Error)
No. Error Code
SSB Byte21,22
1 2503,2504
2 2020,2021
3 2101,2102
4 2000~2010
84
Contents of fail
RTZ Timeout(Sled Timeout).
Focus Fail.
Tracking Fail.
Spindle Fail.
Fail Analysis
1) Check Slider FPC Connection.
2) Check solder of IC601 circumference .
(pin#2-3, 6, 8-10)
3) Exchange IC601.
4) Exchange Slider Motor.
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC601circumference.
4) Exchange IC601(Driver)
5) Check solder of IC101circumference.
(pin#1,2,3pin#87-90,
FE_Servo: R102, C405)
6) Exchange IC101(AFE).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC601circumference.
4) Exchange IC601(Driver).
5) Check solder of IC101circumference.
(pin#1,2,3 pin#87-90,
TE_Servo: R101, C101).
6) Exchange IC101(AFE).
1) Check Spindle FFC Connection.
2) Check solder of IC601circumference.
(pin#12-14)
3) Exchange IC601(Driver).
4) Exchange Spindle Motor.
5) Check solder of IC301circumference.
6) Exchange IC301(MPU & DSP).
Block Diagram
No.21
No.22
No.22
No.18