Digital Equipment STARION 20 Series, Service Maintenance Manual

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Digital STARION 9xx & 20xx PC Troubleshooting
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Monitor Troubleshooting
Problem Possible Cause Action
Monitor power
indicator is not
on Monitor is turned off.
No power at wall outlet.
Power indicator is defective. Turn on the monitor.
Use another outlet.
Replace the failed component.
No screen
display Configuration error.
Monitor brightness and contrast
controls are incorrectly set.
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.
No monitor
display while
loading
Windows video
drivers Monitor type incorrectly set. Set the correct monitor type. Refer to appropriate
video driver documentation.
Distorted-
rolling-or
flickering
screen display-
or
wrong/uneven
color
Monitor incorrectly adjusted.
Monitor signal cable incorrectly
installed.
Adjust accordingly.
Straighten any bent connector pins and then
reconnect.
Color monitor
displaying
monochrome Computer was turned on before
the monitor was turned on.
Video jumper incorrectly set.
Turn off the computer, turn on the monitor, then
turn the computer back on.
Set the jumper for VGA operation.
Monitor fails to
switch to high-
resolution mode Appropriate high-resolution
video drivers are not installed or
incorrectly installed. Correctly install all appropriate high-resolution
video drivers. Refer to the documentation supplied
with the monitor and/or video drivers.
Monitor display
not centered
while loading
Windows video
drivers Monitor type incorrectly set. Set the correct monitor type.
Refer to appropriate video driver documentation.