Compaq AP200 - Professional - 128 MB RAM Reference Manual page 111

Solving Display Problems
Problem
Blank screen ( continued ) The RGB (Red, Green, Blue)
Monitor does not function
properly when used with
energy saver features
Video colors are wrong
Dim characters
Continued
Cause
input switch on the back of the
monitor is incorrectly set.
System ROM is bad; system is
running in Failsafe Boot Block
mode (indicated by one long
beep and three short beeps).
You are using a fixed-sync
monitor and it won't sync at the
resolution chosen.
Monitor without energy saver
capabilities is being used with
energy saver features enabled.
This indicates that either the
cabling or monitor impedance
is incorrect.
The brightness and contrast
controls are not set properly.
Cables are not properly
connected.
Compaq Professional Workstation AP200 Reference Guide
Solution
Set the monitor's RGB input switch
to 75 ohms and, if there is a sync
switch, set it to External.
Reflash the ROM using a ROMPaq
diskette. See the "Failsafe Boot
Block ROM" section of Chapter 2 for
more information.
Be sure that the monitor can accept
the same sweep rate as the
resolution chosen.
Disable monitor energy saver
feature.
1. If you are using BNC cables,
be sure that the Red, Green,
and Blue BNC cables are
connected to the
corresponding monitor
connectors.
2. Be sure your monitor's RGB
inputs are set to 75 ohms.
Adjust the monitor brightness and
contrast controls.
Check that the video cable is
securely connected to the video
card and the monitor.
6-9
Continued