ViewSonic VP171 Service Manual page 32

1
Is screen scrolling ?
No
Is screen flickering ?
No
Is LCD line defective ?
No
Bad Uniformity ?
No
Have line bar or noise?
No
Ghost image ?
No
End
Notice :
1. Make sure VGA cable connect to PC directly and not through a “Data transfer” or “Distribution”......After this
action if Ghost image disappear, go to “Yes”; else, go to “No”.
2. Check the compatibility on the computer. If it is compatibility problem, feedback the information to ViewSonic;
else, go to “No”.
ViewSonic Corporation
Change
Yes
VGA Cable
Yes
Yes
Change
Main Board
Yes
Change
Yes
LCD Panel
Yes
Change
Yes
Inverter Board
Yes
Adjust “Fine
Tune” “Sharp-
Yes
ness” or “Auto
Adjustment”
Yes
Refer to
Yes
No
Notice 1
Yes
Change
No
Main Board
Yes
Change
No
LCD Panel
Yes
Change
No
LCD Panel
Yes
Change
No
Main Board
Yes
Adjust “Fine
No
Tune” “Sharp-
ness” or “Auto
Adjustment”
Yes
27
Confidential – Do Not Copy
Refer to
No Change
Notice 2
Main Board
Yes
Yes
VP171/b/s