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PG-M20X
Checking of Video Input
Feed the composite video signal to
INPUT 3. Select INPUT 3 using the
set's key or the remote controller.
Does the picture appear?
No
Is the video signal including sync
signal inputted to pin (3) of SC3001
on the input PWB?
No
Is the video signal including sync
signal inputted to pin (7) of SC3502
on the input PWB?
No
Check IC3502 and its peripheral
circuit.
Yes
Is the picture disturbed?
1
Check IC8016 (video decoder)
Yes
of PC board and its periphery.
Check Q8002.
Yes
Check Q3512 and Q3513 on
the input PWB.
No
Feed the S-video signal to INPUT 2.
Select INPUT 2 using the set's key
or the remote controller. Does the
picture appear?
Is the color normal?
End
32
Are pin(5) (horizontal) and
Yes
pin(10) (vertical) signals
inputted to IC8363 on the
PC I/F unit?
No
1
Yes
No
Yes
No
Yes
Check IC8363 and
IC8025 (CVIC2) and
their periphery.
Yes
Is the C signal inputted
to pin (11) of SC3001?
No
Check Q3502 on the
input PWB.
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