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C.
DISC IN
OPEN/CLOSE
FOCUS ON?
YES
Does the disc turn?
YES
Is OK the track jump.
YES
Does the screen appear?
YES
END
Check
NO
the focus error moving the
lens up and down.
(IC2A1 Pin39)
YES
Does the
TTL level change at IC201
Pin121 and 152 moving
the lens?
YES
Replace µ-COM or IC201.
Check IC2M1 Pin21, PMD03
NO
Pin1, 2 turn when the IC2M1
Pin21 is less than 2.2V.
NO
NO
Video Part is defective.
Check "5.MPEG Circuit."
Check "7.OSD/Video Circuit."
Fig.3. FOCUS ERROR waveform
NO
Check IC2A1 Pins47,50,51,52
in DVD Mode
IC201 no output : Pick-up is defective.
NO
Replace IC201.
Check IC201 and IC2M1 when PMD03 Pins1, 2 are abnormal
Does the signal
pulse appear at IC201
Pins150, 151?
YES
Replace µ-COM part.
3-58
NO
IC2A1 is defective.
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