LG GSA-4040B Service Manual page 83

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
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#28-29, 34-37)
3) Check solder of IC602 circumference.
(pin#2,13 R630, R635, C618, C619)
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#3,4,5 pin#86-98,
FE_Servo: R701, R740, C703)
6) Exchange IC101(AFE).
7) Exchange IC701(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC601circumference.
4) Exchange IC601(Driver).
5) Check solder of IC101circumference.
(pin#3,4,5 pin#86-98,
TE_Servo: R706, R741, C708).
6) Exchange IC101(AFE).
7) Exchange IC701(DSP).
1) Check Spindle FFC Connection.
2) Check solder of IC601circumference.
(pin#34-37)
3) Exchange IC601(Driver).
4) Exchange Spindle Motor.
5) Check solder of IC701circumference.
6) Exchange IC701(DSP).
Block Diagram
No.23
No.24
No.24
No.20
85