Digital View 559000105?3 Spezifikationen PDF herunterladen (Seite 22)

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TROUBLESHOOTING

General

A general guide to troubleshooting a flat panel display system it is worth considering the system as

separate elements, such as:

¾ Controller (jumpers)

¾ Panel

¾ Backlight (inverter, cabling, backlight tubes)

¾ Cabling

¾ Video Source

Through step by step cross checking with instruction manuals and a process of elimination to isolate

the problem it is usually possible to clearly identify the problem area.

No image:

¾ If the panel backlight is not working it may still be possible to just see some image on the display.

¾ A lack of image is most likely to be caused by incorrect connection, lack of power, failure to

provide a signal.

Image appearance:

¾ A faulty panel can have blank lines, failed sections, flickering or flashing display

¾ Incorrect jumper settings on the controller may cause everything from total failure to incorrect

image. CAUTION: Do not set the panel power input incorrectly.

¾ Sparkling on the display: faulty panel signal cable.

Backlight:

Items to check include: Power input, Controls, Inverter and Tubes generally in this order.

If half the screen is dimmer than the other half:

¾ Check cabling for the inverter.

¾ For a specific backlight tube check the AC pins orientation (CAUTION: Never reverse any DC

power pins).

Also:

¾ If adjusting brightness control has no effect the chances are that the VR rating or method of

adjusting brightness is not compatible or correctly connected to the inverter.

¾ If system does not power down when there is a loss of signal

Continued failure:

If unit after unit keeps failing consider and investigate whether you are short circuiting the equipment

or doing something else seriously wrong.

Generally after common sense issues have been resolved we recommend step by step substitution of

known working parts to isolate the problem.

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Digital View 559000105?3 Spezifikationen Seite 22