Cd Reading Check - LG XA66 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

12. CD READING CHECK

Check connector locking CN1, CN500, CN503
YES
Does sled motor move?
YES
Does the laser move?
YES
Does laser light?
YES
Does the spindle motor rotate?
YES
Is reading OK?
NO
Check CN500 pin3, 4 (SL+, SL-)
Defective pick-up or U502, U504
NO
Check CN503 pin13,16 (F+, F-)
Defective pick-up or U502, U504
NO
Check CN503 pin10 (LD)
Defective pick-up or Q501
NO
Check CN500 pin1, 2 (SP+, SP-)
Defective pick-up or U502, U504
NO
Check CN503 pin14,15 (T+, T-)
Defective pick-up or U502, U504
3-11
NO
NO
NO
NO
NO