Reading Ok Check (= "No Disc" Display) - LG CM2760 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE OF CD PART

4. READING OK CHECK (= "NO DISC" DISPLAY)

Check connector locking.
(CN100, CN101)
YES
Does sled move?
YES
Does lense move?
(= Up & Down)
YES
Does laser light?
YES
Does spindle rotate?
YES
Is reading OK?
#A
NO Check CN101
pin3, 4 (SL+, SL-).
#B
NO
Check CN100
pin13, 16 (F+, F-).
#C
NO
Check CN100
pin10 (LD).
#D
NO
Check CN101
pin1, 2 (SP+, SP-).
#E
NO
Check CN100
pin14, 15 (T-, T+).
3-18
NO Defective
pick-up or IC101 or IC100.
NO
Defective
pick-up or IC101 or IC100.
NO
Defective
pick-up or IC101 or IC100.
NO
Defective
pick-up or IC101 or IC100.
NO
Defective
pick-up or IC101 or IC100.