C.
DISC IN
OPEN/CLOSE
Fig.3. FOCUS ERROR waveform
Check
NONO
the focus error moving theCheck IC2A1 Pins47,50,51,52
FOCUS ON?lens up and down.in DVD Mode
(IC2A1 Pin39)
YESYESIC201 no output : Pick-up is defective.
Does theNO
TTL level change at IC201
Replace IC201.
Pin121 and 152 moving
the lens?
YES
Replace ?-COM or IC201.
NO Check IC2M1 Pin21, PMD03
Does the disc turn?Pin6 turn when the IC2M1 Check IC201 and IC2M1 when PMD03 Pin6 is abnormal
Pin21 is less than 2.2V.
YES
NODoes the signalNO
Is OK the track jump.pulse appear at IC201 IC2A1 is defective.
Pins150, 151?
YESYES
NOVideo Part is defective.
Does the screen appear?Check "5.MPEG Circuit."Replace ?-COM part.
Check "7.OSD/Video Circuit."
YES
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