Read Sharp XG-PH70X (serv.man4) Service Manual online
XG-PH70X/XG-PH70X-N
4 – 13
Component input (except 408i) check
Feed the component signal to
INPUT1.
INPUT1.
Select INPUT1 by using the panel key
or remote control.
or remote control.
Is a picture sent?
NO
Go to "SOG circuit check".
YES
Are colors normal?
YES
Is the contour displayed properly?
NO
IC8017 or IC8025 is defective.
NO
YES
Component is normal.
End.
End.
Is the Signal Type set to Component?
NO
Set the Signal Type to Compo-
nent.
nent.
Execute the process adjustment.
SOG circuit check
Measure TL8017 with an oscilloscope.
Is the composite sync signal reproduced at the right timing?
YES
SOG circuit is normal.
End.
End.
NO
Measure land of C8149 with an oscilloscope.
Is the Y signal including sync signal available?
NO
Go to "Input signal setting check".
YES
The SOG sync separation circuit (periphery of IC8015) is defective.
4
4
4
Click on the first or last page to see other XG-PH70X (serv.man4) service manuals if exist.