Open/ Close Ng; Reading " Display Check (= Only "Cd" Display) - LG CM2760 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE OF CD PART

2. OPEN/ CLOSE NG

Check connector locking.
(CN102)
YES
Check
voltage IC101(AM5888)
pin8, 19: 5 V.
YES
Check
voltage IC101(AM5888)
pin9: MOT-, pin10: MOT+.
YES
Defective mechanism.

3. " READING " DISPLAY CHECK (= ONLY "CD" DISPLAY)

Check connector locking.
(CN101, CN102)
YES
Check
voltage IC101(AM5888)
pin8, 19: 5 V.
YES
Check voltage
IC200 pin2: 3.3 V.
YES
Check IC201
pin19, 17, 16, 38, 37
(CS, CAS, WE, CLK, CKE)
signal waveform.
YES
Defective IC202.
NO
Defective Main power supply.
NO
Defective IC101.
NO
Defective Main power supply.
NO
Defective IC200.
NO
Check IC202.
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