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LG GSA-4040B Service Manual page 79

Super multi dvd drive
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2. Adjusting Error during Disc Load Sequence (Lead in Error)
No. Error Code
SSB Byte21,22
1
42xx
2
43xx
3
452x
4
450x
451x
454x
5
458x
6
45Ax
Contents of fail
Circuit Offset Adjust NG.
Tracking Driver Offset Adjst NG. 1) Check solder of IC601circumference.
Focus Amp Adjust NG.
(DVD-DL Only)
Focus Amp Adjust NG.
Total Amp Adjust NG.
Tracking Amp Adjust NG.
Lens DAC Adjust NG.
Fail Analysis
1) Check Pickup FFC Connection.
2) Check solder of IC101circumference .
(pin#3,4,5 pin#86-98,
FE_Servo: R701, R740, C703
TE_Servo: R706, R741, C708
PE_Servo: R702, C704)
3) Exchange IC101(AFE).
4) Exchange Pickup.
5) Exchange IC701(DSP).
(pin#47-48. R621, R744, R745,
R833, R835, C809, C810)
2) Check solder of IC801circumference.
(pin#26-36)
3) Check Pickup FFC Connection.
4) Exchange IC601(Driver).
5) Exchange IC801(MPU).
1) Check DVD-Dual Disc.
2) Check Pickup FCC Connection.
3) Check solder of IC101circumference.
(pin#3,4,5 pin#86-98,
FE_Servo: R701, R740, C703)
4) Check Slider FPC Connection.
5) Exchange IC101(AFE).
6) Exchange IC601(Driver).
7) Exchange IC701(DSP).
1) Check Pickup FFC Connection.
2) Check solder of IC101circumference.
(pin#3,4,5 pin#86-98,
FE_Servo: R701, R740, C703
PE_Servo: R702, C704)
3) Exchange Pickup.
4) Exchange IC101(AFE).
5) Exchange IC701(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#3,4,5 pin#86-98,
TE_Servo: R706, R741, C708)
4) Exchange IC101(AFE).
5) Exchange IC701(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#3,4,5 pin#86-98,
TE_Servo: R706, R741, C708)
4) Check solder of IC701circumference.
(R707,R708,C709,C710)
5) Exchange IC508.
6) Exchange IC602.
7) Exchange IC101(AFE).
8) Exchange IC701(DSP).
Block Diagram
No.04
No.05
No.06
No.07
No.08
No.09
81

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