All Cd Disc" Reading Error - LG BD630N Service Manual

ONE POINT REPAIR INSTRUCTION

3. "ALL CD DISC" READING ERROR

- All the CD disc is not operated, but BD and DVD are operated normally.
- If the LD current control is abnormal, CD doesn't work.
3-1. Component
1) MD (Traverse Assembly)
2) Q703, Q705
3-2. How to troubleshoot (Countermeasure)
1) Check MD (Traverse, pick-up) first of all.
2) Check the CD LD control input/output.
If input signal (VDACO) is OK, but no output (CD_LD), check the TR Q703, Q705.
3-3. Service hint (Any picture / Remark)
INPUT
(FROM MAIN CHIP)
4-4
OUTPUT
(TO PICK-UP)