DEC a-Series Installation And Setup Manual page 32

Troubleshooting
Table 3-1: System Troubleshooting, continued
Problem
Power is on, but there is no
screen display and no
beeps.
Power is on, but there is no
screen display.
3–4 Installation and Setup Guide
Possible Cause
Monitor brightness and
contrast controls are not
correctly set.
Monitor is off.
Monitor cable or power
cord is incorrectly installed.
Configuration error.
Monitor is defective.
Bad monitor cable.
Defective video controller
module.
Keyboard or video
controller missing or
malfunctioning.
Various possible causes.
Action
Adjust the brightness and contrast
controls.
Ensure AC power cord is plugged in
and turn on the monitor.
Check all monitor connections.
Refer to the video module
documentation for more information.
Try another monitor.
Try another cable.
Replace the video module.
The console tests for keyboard and
video before displaying information.
Check connections.
Listen carefully for computer beep
codes; record the number of beeps and
their patterns and then check the beep
codes below:
1-3-3 No usable memory detected
1-1-4 Firmware in flashROM is
corrupted