AMPTRON 19" series, User Manual, Page: 9 / 10

TROUBLE SHOOTING
Check the information in this section to see if the problems can be solved before
requesting repair.
Note
：
The consumers are only allowed to solve the problems described as below.
Any unauthorized product modification, or failure to follow instructions
supplied with the product will end the warranty immediately.
No image Make sure power button is ON.
Check whether the LCD monitor and computer power cords are plugged and
whether there is a supply of power.
No Signal Input
Check the signal connection between the computer and LCD monitor.
“Out Of Range” Check the computer image output resolution and frequency and compare the value
with the preset values (Please refer to [Appendix-Display Mode]).
Fuzzy image Adjust Phase.
Image too bright
Image too dark Adjust brightness and contrast by OSD.
Irregular image Check the signal connection between the computer and LCD monitor.
Perform Auto Adjust.
Distorted image Reset the LCD monitor. (perform the “Recall” function by OSD)
Take off extra accessories (such as signal extension cord).
Image is not centered
Size is not appropriate
Use OSD Image Menu to adjust H. Position and V. Position.
Check image size setting.
Perform Auto Adjust.
Uneven color
Color too dark
Dark area distorted
White color is not white
Use OSD Color Menu to adjust color setting.
Can’t adjust LCD monitor
with the buttons in the
front.
The other problem
Please contact the stores where you purchased the unit or service center listed at
your warranty card.
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