4-10 Maintenance and Troubleshooting
Table Section 4-6 Problems and Solutions
Problem
Symptom
Solution
Keyboard or mouse
malfunction
Monitor has prompt, but
cannot input data.
1
. Check that keyboard/mouse is plugged
in.
2
. Check password (see Section 2).
3
. Disable password (see Section 2).
4
. Replace keyboard (or mouse).
5
. Replace system board.
Monitor
malfunction
Unable to synchronize
display.
1
. Adjust the monitor's synchronization
controls.
2
. Check that the monitor's resolution
matches the video setting or the video
driver used (see Section 1).
3
. Check that the utility is not selecting a
refresh rate/resolution that is not
supported by the monitor.
4
. Check that the driver used matches the
capabilities of the video board and
WRAM.
Wavy display.
1
. Check that the computer and monitor
are not near motors or electric fields.
Blank display.
1
. Press any key or move mouse to
ensure power management has not
blanked the display
2
. Check that the VGA connector is
attached to the video board at the rear of
the system.
3
. Check that the monitor power ON/OFF
switch is ON.
4
. Check cable connections between the
AC power supply and monitor.
5
. Adjust brightness and contrast controls
on the monitor.
6
. Check cable connections between the
monitor connector and the system board
(or optional video board).
7
. Replace video board.
8
. Replace monitor.
