Monitor Troubleshooting - Digital Equipment 3100R Series Service Maintenance Manual

Troubleshooting

Monitor Troubleshooting

Problem
Monitor power indicator is
not on.
No screen display.
Distorted, rolling, or
flickering screen display, or
wrong/uneven color.
Color monitor displaying
monochrome.
Monitor fails to switch to
high-resolution mode.
4-24
Possible Cause
Monitor is turned off.
Power cord is not
connected.
No power at wall outlet.
Power indicator is
defective.
Configuration error.
Monitor brightness and
contrast controls are
incorrectly set.
Monitor has failed.
Monitor incorrectly
adjusted.
Monitor signal cable
incorrectly installed.
Server was turned on
before the monitor was
turned on.
Appropriate high-resolution
video drivers are not
installed or incorrectly
installed.
Action
Turn on the monitor.
Connect the power cord to the
server.
Use another outlet.
Replace the monitor.
Run the SCU to configure the
server for video operation.
Adjust the monitor brightness and
contrast controls.
Replace monitor.
Adjust accordingly.
Straighten any bent connector pins
and then reconnect.
Turn off the server, turn on the
monitor, then turn the server back
on.
Correctly install all appropriate high-
resolution video drivers. Refer to
the documentation supplied with the
monitor.