LG RCT689H Service Manual page 128

Recognition fail case 1 : CD-ROM fail
Check pick-up Read power
was 1.3 ~1.7mW?
YES
Does focus servo
operate normally?
YES
Check pick-up
RF signal LIC101(pin83)
RFOUT was about
400mV?
YES
Check EQOUTP
waveform (LIC101 pin65)
was about 400mV?
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 LIC101.
NO
Go to "Tracking servo is unstable".
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