LG DR165 Service Manual page 69

Recognition Fail Case 1:
CD-ROM Fail
Check Pickup Read Power
was 1.3 ~1.7mW?
YES
Does Focus Servo
operate normally?
YES
Check Pickup
RF signal LIC121(Pin81)
RFOUT was 2~2.5V?
YES
Check EQOUTP
waveform (LIC121 Pin 74) was
1.75~2.3V?
YES
Check after replacing LIC201.
It is OK?
YES
OK
NO
Go to "LD CHECK".
NO
Go to "Focus Servo is unstable".
NO
Check the Pick-up FFC and LPM101.
Replace the Pick-up.
NO
Replace LIC121.
NO
Go to "Tracking Servo is unstable".
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