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12
Troubleshooting
FAILURE
No Image
No Image
No Image
No Image
No Image
Dim Display
Dim Display
Flickering Pixels;
Uneven Screen
Intensity; Lack
of Non-OSD
Brightness Control
Vertical Bars;
Flickering Pixels
Vertical Bars;
Flickering Pixels
Vertical Bars
POSSIBLE CAUSE
No Power
If the Green LED on the front bezel is illuminated,
it indicates that the power supply is functional and
connected properly. If the LED does not function
properly, continue with the next set of instructions.
Defective AC Cable/
Verify that the power supply is properly connected to
Connection
the LCD monitor and an AC power source (i.e., wall
outlet). Inspect cable for physical damage.
Defective Power
Verify that external power supply is functional.
Supply
No Signal; Incorrect
Verify that a video signal of compatible resolution
Graphic Card
and refresh rate is being provided to the monitor.
Settings
Defective Display,
Contact General Digital Service Department for a
Backlight Inverter or
Return Material Authorization (RMA).
Internal Connection
OSD Settings
Check Brightness and Contrast settings. If either
setting is too low, the display will appear dim.
Half-life of Backlights
Determine how many hours your monitor has been
Reached
running. Backlights will be reduced to 50% original
brightness after approximately 50,000 hours. Contact
General Digital Service Department for a Return
Material Authorization (RMA).
Defective LCD Panel
If adjusting brightness control has no effect, the
or Internal Cable;
VR rating or method of adjusting brightness is not
Improper Pinout
compatible or correctly connected to the inverter.
Contact General Digital Service Department for a
Return Material Authorization (RMA).
Video Cable
Be sure that you are using a quality video cable.
General Digital recommends a shielded three wire
coax (R, G, B) with twisted pair for Hsync and Vsync.
Replace the video cable. Ensure that your video
source supports VESA standards.
OSD Settings
Activate the OSD menu. Select the Auto Setup
function. If this does not correct the problem,
continue. Display a 50% gray pattern on the LCD
display. If vertical bands are evident, activate the
OSD menu. Adjust the Image Size function until the
vertical bands vanish. Use the Tuning function to fine
tune the image.
Quickly Cycling
After powering down the unit, wait for a minimum
Power
of 2 seconds before powering up. This gives the
capacitor a chance to discharge.
Saber PanelMount NVIS 90-3104-005 User's Manual
Page 16
SOLUTION
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