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NO COLOR
(Autoprograming, Picture OK)
Are the R-Y, B-Y signal of pin29, 30
of IC501 normal?
Are the R-Y, B-Y signal of pin31, 32
of IC501 normal?
Are R, G, B signal of pin19, 20, 21
of IC501 normal?
Check/Replace P901A, P901B,
IC901
NO TELETEXT
Abnormal
Check the 5V line to be
correct.
NO
Check/Replace IC501
Yes
Yes
Yes
Check the voltage 5V of
pin1 of IC805
Check video signal at the
pin38 of IC501
Check/Replace Q506,
Q1101, C709
Check/Replace IC701,
X701, L701, R702, C713
NO
Check/Replace IC501,
X501, X502
NO
Check/Replace IC502.
Check 12V line, R-Y, B-Y
line
NO
Check/Replace IC501
48.~5.2V
NO
Check video signal pin9
Check I
Yes
Check pin16, 17, 18, 20
Abnormal
D505~508, C516~518
of IC701
Yes
2
C BUS lines
(SDA, SCL)
OK
of IC701
Check/Replace
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