Monitor Troubleshooting - Digital Equipment CELEBRIS Pentium PC Service Maintenance Manual

Tr oubl eshoot i ng

Monitor Troubleshooting

Problem
Monitor power
indicator is not
on
No screen
display
C
E
L
E
No monitor
B
display while
R
loading
Windows video
drivers
S
Distorted-
rolling-or
5
flickering
8 screen display-
or
6
wrong/uneven
color
Color monitor
displaying
monochrome
Monitor fails to
switch to high-
resolution mode
Monitor display
not centered
while loading
Windows video
drivers
74
Possible Cause
Monitor is turned off.
No power at wall outlet.
Power indicator is defective.
Configuration error.
Monitor brightness and contrast
controls are incorrectly set.
Monitor type incorrectly set.
Monitor incorrectly adjusted.
Monitor signal cable incorrectly
installed.
Computer was turned on before
the monitor was turned on.
Video jumper incorrectly set.
Appropriate high-resolution
video drivers are not installed or
incorrectly installed.
Monitor type incorrectly set.
D i gi t al C ELEBRI S Pent i um PC
Action
Turn on the monitor.
Use another outlet.
Replace the failed component.
Run the BIOS Setup Utility to configure the
computer for VGA operation.
Set the jumper for VGA operation.
Refer to "Main Logic Board Jumpers".
Adjust the monitor brightness and contrast
controls.
Set the correct monitor type.
Refer to appropriate video driver documentation.
Adjust accordingly.
Straighten any bent connector pins and then
reconnect.
Turn off the computer, turn on the monitor, then
turn the computer back on.
Set the jumper for VGA operation.
Correctly install all appropriate high-resolution
video drivers. Refer to the documentation
supplied with the monitor and/or video drivers.
Set the correct monitor type.
Refer to appropriate video driver documentation.
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