VL510 User’s Manual
15
Trouble Shooting
B
efore calling an authorized service center, please check that the items below are
properly connected or set.
I
n case of using a non-standard signal, please check the pin assignments and the
signal timing of your adapter with the specifications outlined in sections "Pin
Assignment Table" and "Preset Timing Chart".
Problem
Items to check
No picture
All LED indicators flash
Check the color of the power LED indicator; if it is
orange, then the monitor is in a power saving mode.
Check if the horizontal/vertical frequency are out of
range.
Maximize the Brightness and Contrast controls.
The video card may not be seated properly. Make
sure it is fully seated in its slot.
Make sure the signal cable is connected securely to
the video card or computer.
Display image is not
centered, too small, or
too large
Refer to "Controls & Adjustments." You need to adjust
"Size" and "Position" of the image.
Image is scrolling or
unstable
Make sure the signal cable is connected securely to
the video card or computer.
Picture is fuzzy
Adjust Contrast and Brightness controls.
Picture bounces or a
wave pattern is present
in the picture
Move devices that might be causing electrical
interference away from the monitor. (See "FCC
Information")
