LG DA-W6100A Service Manual page 36

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