Sharp XG-PH70X Service Manual page 55

Component input (except 408i) check
Feed the component signal to
INPUT1.
Select INPUT1 by using the panel key
or remote control.
Is a picture sent?
4
YES
Are colors normal?
NO
Is the Signal Type set to Component?
Execute the process adjustment.
4
SOG circuit check
Measure TL8017 with an oscilloscope.
Is the composite sync signal reproduced at the right timing?
Measure land of C8149 with an oscilloscope.
Is the Y signal including sync signal available?
The SOG sync separation circuit (periphery of IC8015) is defective.
NO Go to "SOG circuit check".
YES Is the contour displayed properly?
Component is normal.
End.
NO Set the Signal Type to Compo-
nent.
NO
YES
XG-PH70X/XG-PH70X-N (1st. Edition)
YES
YES SOG circuit is normal.
End.
NO Go to "Input signal setting check".
4 – 13
NO IC8017 or IC8025 is defective.
4