Service manual

Chapter 5 Troubleshooting
65
B. Refer to the manual provided with the screen saver utility.
8. Verify the memory modules are correctly seated in the slots.
You may want to remove and reinstall the memory modules to ensure this is not causing the
problem.
9. Ensure you have at least one pair of like memory modules installed.
10. To see if the display is functioning:
A. Turn off the monitor and the NetServer.
B. Disconnect the video cable from the video connector.
C. Turn on the monitor first, then turn on the NetServer.
Monitor Notes:
à
àà
à If the display is black or white when it should be in color, check the monitor cable to see if a
pin is bent. If a pin is bent, slowly but carefully straighten the pin.
à
àà
à If a monitor tester is available, use it to check the display.
à
àà
à If you suspect the monitor is faulty, if possible, replace it with a known good monitor. Then
reinstall the original monitor and duplicate the error.
12. Check the monitor connector's for bent pins. If the pins are bent, slowly but carefully straighten
them.
13. Connect the monitor connector to the 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 the monitor's type: Color or Monochrome.
B. Verify the video cable is properly inserted in the connector on the back of the computer.
C. Check the connector for bent pins.
15. If the monitor displays a badly scrambled image that looks to be the current screen image, then
the monitor is not syncing correctly.
à
àà
à If a video board is installed, replace it with a known good one. The video timing setting on
the board may be bad.
16. If a video board is installed:
A. Ensure the video board is supported.
B. If there is still a problem, ensure the board is seated correctly.
17. Once a suspect part has been found, verify it is the problem by reinstalling the part and
duplicating the error.
The monitor On-Off Led will not light
NOTE If you disconnect the monitor from the video connector, ensure the monitor is
reconnected to the video connector before you turn on the NetServer again.
1. Review the Troubleshooting Checklist before you continue.
2. Check the contrast and brightness controls to ensure the controls are adjusted.
3. Verify the video and power cables are connected.
4. Ensure there is adequate power:
A. Verify the display is turned on.