Sharp PG-M20XU Service Manual page 34

PG-M20S
PG-M20X
Checking of DTV
(480i Component Input)
Feed the 480i component signal in INPUT 1.
Select INPUT 1 using the set's key or the remote controller.
Select 480i among the special modes on the user
menu screen.
Is picture outputted?
Yes
Is the color normal?
Yes
Does the contour of picture
appear clear.
Yes
End
Confirmation of synchronization.
No
Is Y signal including sync signal
inputted to pin (3) of IC3502?
No
Is the signal type set to the
component?
No
Set the signal type.
In case of monitor output,
disconnect the monitor output
cable.
Set the monitor output.
Check the monitor output
equipment and cable.
No
Is 480i selected among the special
modes?
Yes
IC8025 is defective.
34
Go to "Checking of
Low-pass Filter Circuit"
Yes
Yes
Check IC3501 and its
periphery.
Abnormal
Restored to normal condition
No
Select 480i.
Yes
Check IC8016
(Video decoder).
No