HP Netserver LP2000r Service Manual page 61

Chapter 5
2. Check the contrast and brightness controls to ensure each is adjusted.
3. Verify the video and power cords are connected to the monitor.
4. Ensure there is adequate power:
a. Verify the display power switch is turned on.
b. Verify the display power cord is connected to an AC power outlet and the video cable
connected to the server's video connector.
c. Plug in a known working device to ensure there is power to the outlet or use the proper
testing device to check the power outlet.
d. Turn the monitor off and on, and if the monitor has an on/off LED, see if it lights.
e. Turn the Clear Configuration switch on the system board to OFF and reboot the Netserver.
Check if the problem persists.
5. Turn on the Netserver and wait a full 2 minutes. Verify the monitor starts displaying normally.
6. If the problem persists, and if the power cord is detachable, try a known good power cord.
7. Unplug the power cord and wait 30 seconds. Plug in the power cord and turn on the Netserver.
Wait a full 2 minutes. Check that the monitor starts displaying normally.
8. Check the monitor display to see if the system memory count takes place correctly.
a. Turn the Netserver off and then on. Check to see if the memory is counted during the
Netserver boot. If no count occurs, go to Step 10.
b. Check to see if the count occurs in the color appropriate for the monitor.
If the count occurs in the wrong color, the problem may be with the video subsystem, the
monitor, or the monitor cable. (Continue with the troubleshooting steps.)
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.
Troubleshooting
55