If Your Pc Has A Hardware Problem; Display Does Not Work Properly; Other Display Problems - HP Vectra VL series 8 Maintenance Manual

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WARNING

3 Troubleshooting Your PC

If Your PC Has a Hardware Problem

This section describes what to do if you have problems with your disk

drives, printer, accessory boards, keyboard, or mouse.

Be sure to disconnect the power cord and any telecommunication

cables from your computer before you remove the cover to check the

cable connections or jumper settings.

T o avoid electric shock and harm to your eyes by laser light, do not

open the CD-ROM drive enclosure. The CD-ROM drive should be

serviced by service personnel only. Refer to the label on the CD-ROM

for power requirements and wavelength. This PC is a class 1 laser

product. Do not attempt to make any adjustment of the laser unit.

If nothing is displayed on the display at all, but the PC starts and the

keyboard, disk drives, and other peripheral devices seem to operate

properly:

1 Make sure that the display is plugged in and switched ON.

2 Check that the brightness and contrast controls are properly set.

3 Ensure that the display video cable is correctly connected.

4 Switch off the display, and unplug it from the power outlet.

Disconnect the video cable and examine the video cable connector

pins. If the pins are bent, carefully straighten them.

5 Check that the video upgrade is properly installed if you have one.

6 Check that an accessory board doesn't use the same I/O address as

the integrated video interface (03B0h to 03DFh). Refer to the

manual supplied with the accessory for further information.