Troubleshooting Monitor Problems - Digital Equipment 300 Series AXP Reference Manual

Monitor If you are having trouble with your monitor, locate the problem
Problems in Table 7–2.
Table 7–2 Troubleshooting Monitor Problems
Symptom
No display appears on the
monitor screen.
Display is distorted.
Possible Cause
Monitor is not turned on.
Wall socket may not be
operative.
Contrast and brightness
controls are set too low to
see the screen display.
System module or graphics
board failure.
Monitor video cable is not
connected.
System did not pass startup
test.
Monitor is defective.
Your color monitor has six
connectors, three marked
Video In, and three marked
Video Out.
Using the Troubleshooting Tables
Corrective Action
Check that the monitor on/off switch
is on. Check that the monitor power
cord is connected at both ends.
Try a different wall socket, or try
an electrical device that you know
works in the wall socket.
Adjust the contrast and brightness
controls. Refer to the monitor guide
for more information.
Refer to Chapter 4 for information
on running diagnostic tests.
Check that the monitor cable is
connected at both ends.
If the problem persists, contact your
Digital service representative.
Refer to Chapter 4 and Chapter 8 for
information on running diagnostic
tests or contact your Digital service
representative.
Contact your Digital service
representative.
Ensure that the monitor video cable
is connected to the three Video In
connectors.
7–5