HP netserver e 800 Service Manual page 58

Chapter 5
9. If you are using a video screen saver utility and the screen goes blank while using the keyboard,
you may be using an application that turns off the screen even when you are using the
keyboard. Refer to the manual that came with the screen saver utility.
10. Ensure the memory modules (DIMMs) are correctly seated in their slots. You may want to
remove and reinstall each memory module to ensure it does not cause the problem. Verify the
correct type, size, and combinations of modules for this model NetServer are installed.
11. To see if the display is functioning:
a. Turn off the monitor and the server.
b. Disconnect the video cable from the video connector.
c. Turn on the monitor.
Monitor Notes:
When most EGA and VGA monitors are disconnected from the video connector, if the
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monitor is working, the screen is white.
When some monitors (such as HP high-resolution monitors) are disconnected from the video
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connector, the monitor may be working, although the screen is black.
If the display is black or white when it should be in color, check the monitor cable to see if a
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pin is bent. If a pin is bent, slowly but carefully straighten the pin. Replace the cable if the pin
cannot be straightened successfully.
If a monitor tester is available, use it to check the display.
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If you suspect the monitor is faulty, replace it with a known good monitor. Then reinstall the
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original monitor and duplicate the error.
12. Verify the monitor is working by plugging it into a know-good NetServer or computer.
13. Check to see if the monitor connector's pins are bent. If the pins are bent, slowly but carefully
straighten each pin.
14. Connect the monitor cable to the NetServer video connector and turn on the NetServer. If there
is a display, but characters are the wrong size or the display is the wrong color:
a. Check whether the monitor is a color or monochrome monitor.
b. Verify the video cable is properly inserted in the connector on the back of the computer.
c. Check for bent pins on the connectors.
15. If the customer has installed a video board instead of using the built-in video, make sure all
jumpers and switches are set properly on the installed video board. (See the manual for the
video board.)
16. If the monitor displays a badly scrambled image that looks to be the current screen image, then
the monitor is not synchronizing correctly.
If a video board is installed, replace it with a known good one. The video timing setting on
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the board may be bad.
If it is the on-board video, replace the system board.
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17. If a video board is installed and the built-in video is used:
a. Make sure the video board/built-in video combination is supported. Usually, two video
systems (for example, internal video and a video adapter board) cannot be used at the same
time.
b. If there is still a problem, make sure the board is seated correctly.
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Troubleshooting