digitalview IE-1000 Handbuch - Seite 14

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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:

Controller (jumpers, PC settings)

Panel (Cabling, connection, panel, PC settings)

Backlight (inverter, cabling, backlight tubes)

Cabling

Computer system (display settings, operating system)

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:

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

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

provide a signal or incorrect graphic card settings.

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. This situation can occur with a custom

graphics card that is not close to standard timings or if something is in the graphics line that may be

affecting the signal such as a signal splitter (please note that normally a signal splitter will not have

any adverse effect).

Image appearance:

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

Incorrect graphics card refresh rate, resolution or interlaced mode will probably cause the image

to be the wrong size, to scroll, flicker badly or possibly even no image.

Incorrect jumper settings on the controller & IE-1000 may cause everything from total failure to

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

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:

Check cabling for the inverter.

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

power pins).

Also:

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.

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.

Specifications subject to change without notice

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