All Dvd Disc" Reading Error - LG BD550 Service Manual

3. "ALL DVD DISC" READING ERROR

- All the DVD disc is not operated, but BD and CD are operated normally.
- If the LD current control is abnormal, DVD doesn't work.
3-1. Component
1) MD (Traverse Assembly)
2) Q712, Q717
3-2. How to troubleshoot (Countermeasure)
1) Check MD (Traverse, pick-up) first of all.
2) Check the DVD LD Control input/output.
If input signal ( LDELO_LPF) is ok, but no output (LDI_DVD), check the TR Q712, Q717.
3-3. Service hint (Any picture / Remark)
INPUT
(FROM MAIN CHIP)
LDELO_LPF
COMPONENT REPAIR GUIDE
4-4
2010
OUTPUT(TO PICK-UP)