Compaq D51s Troubleshooting Guide - Page 29

Solving Display Problems, Problem, Cause, Solution, Stand, Stand

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Troubleshooting Without Diagnostics Solving Display Problems If you encounter display problems, see the documentation that came with your monitor and to the common causes and solutions listed in the following table. Solving Display Problems Problem Blank screen. Cause Monitor is not turned on and the monitor light is not on. The cable connections are not correct. The energy saver feature has been enabled. The RGB (Red, Green, Blue) input switch on 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. Computer is in Stand By mode. Solution Turn on the monitor and check that the monitor light is on. Check the cable connection from the monitor to the computer and to the electrical outlet. Press any key or click the mouse button and, if set, type your password. 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 the Desktop Management Guide for more information. Be sure that the monitor can accept the same sweep rate as the resolution chosen. Press the power button to resume from Stand By mode. Troubleshooting Guide 2-15

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Troubleshooting Guide
2–15
Troubleshooting Without Diagnostics
Solving Display Problems
If you encounter display problems, see the documentation that came
with your monitor and to the common causes and solutions listed in
the following table.
Solving Display Problems
Problem
Cause
Solution
Blank screen.
Monitor is not turned
on and the monitor light
is not on.
Turn on the monitor and check that
the monitor light is on.
The cable connections
are not correct.
Check the cable connection from
the monitor to the computer and to
the electrical outlet.
The energy saver
feature has been
enabled.
Press any key or click the mouse
button and, if set, type your
password.
The RGB (Red, Green,
Blue) input switch
on the monitor is
incorrectly set.
Set the monitor’s RGB input switch
to 75 ohms and, if there is a sync
switch, set it to external.
System ROM is bad;
system is running in
Failsafe Boot Block
mode (indicated by one
long beep and three
short beeps).
Reflash the ROM using a ROMPaq
diskette. See the “Failsafe Boot
Block ROM” section of the
Desktop
Management Guide
for more
information.
You are using a
fixed-sync monitor and
it won’t sync at the
resolution chosen.
Be sure that the monitor can accept
the same sweep rate as the
resolution chosen.
Computer is in
Stand
By
mode.
Press the power button to resume
from
Stand By
mode.