LG GCE-8240B Service Manual page 55

Spindle control is abnormal 2
(CD-ROM Disc)
Is there RRF signal output?
(IC401 pin 85)
YES
Does Tracking Servo
operate normally?
YES
Is there RECD,
signal output normally?
(IC401 pin 37)
YES
Replace the IC301(MICOM).
Spindle control is abnormal 3
Is there WBLIN signal input?
(IC201 pin 132)
YES
Is there DMO signal output?
(IC201 pin 2)
YES
Go to "Spindle operating is abnormal"
NO
Go to "RF output is abnormal"
NO
Go to "Track Servo is unstable"
NO
Go to "RF output is abnormal"
NO
Is there ATFG signal output?
(IC401 pin 38)
YES
Replace the IC401(CXA2638R).
NO
Replace the IC201(OTI-9797).
NO
Go to "RF output is abnormal"
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