Video/Monitor Problems - HP server rx4610 Service Manual

Chapter 5

Video/Monitor Problems

Symptoms:
•
Nothing is displayed on the monitor.
•
The monitor is blank.
•
The wrong size characters appear on the monitor.
•
Colors are wrong or there are no colors on the monitor.
If you installed a video board and are not using the built-in video system, go to Step 12. If you have two video
monitors connected, test the monitors to make sure they are working (Step 1-4) then go to Step 10.
1. Review the Troubleshooting Checklist before you continue.
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 HP Server.
Check if the problem persists.
5. Turn on the HP Server 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 HP Server.
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 HP Server off and then on. Check to see if the memory is counted during the HP
Server 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 HP Server 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.
Troubleshooting
66