HP P Class 733/800/866MHz / 1GHz, User Manual

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Chapter 3 63
Troubleshooting Your HP Visualize Linux Workstation
If Your Workstation Has a Hardware Problem
If Your Workstation Has a Hardware Problem
This section describes what to do if you have problems with your display,
disk drives, printer, accessory boards, keyboard, or mouse.
Display Does Not Work Properly
If Your Display Is
Blurred or
Unreadable If you have selected the wrong display type in your operating system, the
display screen may become blurred or unreadable. To correct this
problem, select the correct display by using the procedures in the
operating system on your Workstation. Refer to your Workstation’s
operating system documentation for details.
If Nothing Is
Displayed On the
Screen If nothing is displayed on the screen, but the Workstation starts and the
keyboard, disk drives, and other peripheral devices seem to operate
properly:
• Check your Workstation’s LCD screen to help you diagnose the
problem.
• Make sure that the display is plugged in and switched ON.
• Check that the brightness and contrast controls are properly set.
• Ensure that the display video cable is correctly connected.
• 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.
• Check that the video upgrade is properly installed if you have one.
• If the display works correctly during the Power-On-Self-Test (POST),
but then goes blank, check to see if you have enough memory for the
video mode you have selected.
• If your screen’s refresh rate is set too high, the screen might be blank.
Check the refresh settings to ensure they are not too high.
Other Display
Problems If the display image is not aligned with the screen, use the display’s
controls to center the image (refer to the display manual for
instructions). If the screens generated by the applications do not appear
to be correct, check the application’s manual to find out which video