3-10
FOCUS ON?
Check
the focus error moving the
lens up and down.
(IC201 Pin
21
)
Does the
TTL level change at IC206
Pin
78
and
13
moving
the lens?
Does the disc turn?
IC206 Pin
16
is "High"?
Is OK the track jump.
Does the signal
pulse input at IC700 Pin
27
,
28
, and
29
?
Does the screen appear?
OPEN/CLOSE
Replace µ-COM or IC206.
Replace IC206.
Check IC201 Pin
52
,
53
,
54
,
55
in DVD Mode
Check IC201 Pin
58
,
59
,
60
,
61
in CD Mode
Fig.3. FOCUS ERROR waveform
IC201 no output : Pick-up is defective.
Check IC206 and IC403 when the Pin
4
is abnormal
Check CON404 Pin4, 6 Motor
turn when the Pin4 is less than 1.6V
Check A
Video Par is defective.
Check "5.MPEG Circuit."
Check "7.OSD/Video Circuit."
Replace IC700.
µ-COM part is
defective. Check
"2.µ-COM Circuit."
DISC IN
C.
END
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
w
w
w
.
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t
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.
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