NCR 5965 - Condition: Image Position; Condition: Image Appearance; Condition: Sparkling on the Display; Condition: LCD DIM;Contrast too Light or Dark

4-4 Chapter 4: Problem Isolation Procedures
Condition: Image position
If it is impossible to position the image correctly, i.e. the image adjustment controls will
not move the image far enough, then test using another graphics card.
Condition: Image appearance
A faulty panel can have blank lines, failed sections, flickering or flashing display. An
incorrect graphics card refresh rate, resolution, or interlaced mode can cause the image to
be the wrong size, to scroll, to flicker badly, or have no image.
Condition: Sparkling on the display
Faulty LCD panel or LVDS signal cable.
Condition: LCD Dim/Contrast too Light or Dark
1. Unit is cold. Wait 15 minutes for unit to reach operating temperature before measuring
brightness or contrast. Do not expose the unit to operating temperatures below 5° C.
2. Unit in direct sunlight. For best display quality, keep the unit out of direct sunlight or other
bright light sources.
3. The OSD controls may have been misadjusted. Enter the On Screen Display menu and
check that the Brightness and Contrast controls are properly set. You may wish to perform
Factory Reset from the OSD menu to establish the default settings for these controls.
4. One of the LCD’s backlight tubes may have failed, or the LCD’s backlight tubes may be
near the end of their useful life. Replace the LCD panel. Recalibrate Touch Screen.
5. The Backlight inverter may be damaged. Replace the backlight inverter board if necessary.
6. If the problem persists, replace the main Controller Board and then perform the
Calibration procedure.
Condition: Lines in LCD Display
1. The display may need to be calibrated. Enter the OSD menu and perform Autoadjust.
2. The external VGA cable may be loose. Check the VGA cable for bent pins and ensure that
the VGA cable is securely fastened at both ends.
3. The Internal LCD harness running between the main Controller Board and the LCD panel
may be loose. Re-seat the connectors at both ends of this wiring harness.
4. While very unlikely, it is possible that the LCD panel could have failed. Try replacing the
LCD panel & recalibrate the Touch Screen. If this does not correct the problem reinstall
the old LCD panel and replace the main Controller Board and then perform the
Calibration procedure.