Read Sharp XG-PH70X (serv.man4) Service Manual online
XG-PH70X/XG-PH70X-N
4 – 10
Input signal setting check
Is the input menu selected properly?
NO
Select the proper menu.
YES
Are the connectors connected properly?
NO
Connect the connectors properly.
YES
End
Checking of Sync signal
Is the vertical sync signal applied to
the pin 11 of IC8012?
NO
Go to “Input signal setting check”.
The periphery of SC8001 is defective.
YES
Is the horizontal sync signal applied
to the pin 5 of IC8012?
to the pin 5 of IC8012?
NO
Go to “Input signal setting check”.
The periphery of SC8001 is defective.
YES
Is the vertical sync signal applied to
TL8016?
TL8016?
NO
IC8012 is defective.
YES
Is the horizontal sync signal applied
to TL8015?
to TL8015?
NO
IC8012 is defective.
YES
Is the timing of vertical and horizon-
tal sync signals correct?
tal sync signals correct?
YES
The sync signal is normal.
NO
Is the signal generator (input
source) correct?
source) correct?
NO
Properly set the signal source.
YES
The periphery of SC8001 is defec-
tive.
tive.
2
1
3
2
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