LG GSA-4120B Service Manual page 78

No. Error Code
SSB Byte21,22
16 182x
01xx
17 52xx
18 54xx
19 55xx
20 56xx
21 57xx
22 58xx
81
Contents of fail
Home Position Adjust NG.
(DVD-SL Only)
Focus Offset Adjust NG.
(DVD-R/RW, +R/RW)
DPP Amp Adjust NG.
(CD Disc Only)
Lens Shift/ Tilt Adjust NG.
(CD Disc Only)
Focus Level Adjust NG.
HFPE Amp/Gain Adjust NG.
Lens Sensitivity Adjust NG.
Fail Analysis
1) Check FFC Connection.
2) Check Slider FPC Connection.
3) Exchange Slider Motor.
4) Check solder of IC101circumference.
5) Exchange IC101(AFE).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#4,5,6 pin#85-98,
TE_Servo: R337, C328)
4) Exchange IC101(AFE).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#4,5,6 pin#85-98,
TE_Servo: R337, C328)
4) Exchange IC101(AFE).
5) Exchange IC301(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC601 circumference.
4) Exchange IC601.
5) Check solder of IC701 circumference.
6) Exchange IC301
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#4,5,6 pin#85-98,
PE_Servo: R335, C326)
4) Exchange IC101(AFE).
5) Exchange IC301(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC101circumference.
(pin#10,11 R340,C331,R341,C334)
4) Exchange IC101(AFE).
5) Exchange IC301(DSP).
1) Check Pickup FFC Connection.
2) Exchange Pickup.
3) Check solder of IC301circumference.
4) Exchange IC301(MPU).
Block Diagram
No.22
No.17
No.07
No.15
No.06
No.14
No.18