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Troubleshooting Without Diagnostics
Solving Display Problems (Continued)
Problem
Power LED flashes Red six
times, once every second,
followed by a two second
pause, and the computer
beeps six times.
Monitor does not function
properly when used with
energy saver features.
Dim characters.
Blurry video or requested
resolution cannot be set.
The picture is broken up,
rolls, jitters, or flashes.
Vibrating or rattling noise
coming from inside a CRT
monitor when powered on.
Clicking noise coming from
inside a CRT monitor.
D–10
Cause
Pre-video graphics
error.
Monitor without energy
saver capabilities is
being used with energy
saver features enabled.
The brightness and
contrast controls are not
set properly.
Cables are not properly
connected.
If the graphics controller
was upgraded, the
correct video drivers
may not be loaded.
Monitor is not capable
of displaying requested
resolution.
The monitor connections
may be incomplete or
the monitor may be
incorrectly adjusted.
Monitor needs to be
degaussed.
Monitor degaussing coil
has been activated.
Electronic relays have
been activated inside
the monitor.
360201-002
Solution
For systems with a graphics card:
1. Reseat the graphics card.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated
graphics, replace the system board.
Disable monitor energy saver
feature.
Adjust the monitor brightness and
contrast controls.
Check that the graphics cable is
securely connected to the graphics
card and the monitor.
Install the video drivers included in
the upgrade kit.
Change requested resolution.
1. Be sure the monitor cable is
securely connected to the
computer.
2. In a two-monitor system or if
another monitor is in close
proximity, be sure the monitors
are not interfering with each
other's electromagnetic field by
moving them apart.
3. Fluorescent lights or fans may
be too close to the monitor.
Degauss the monitor.
None. It is normal for the
degaussing coil to be activated
when the monitor is powered on.
None. It is normal for some monitors
to make a clicking noise when
turned on and off, when going in
and out of standby mode, and when
changing resolutions.
Service Reference Guide, dc5000
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