Troubleshooting Guide

Troubleshooting Guide www.hp.com 2–21
Troubleshooting Without Diagnostics
The picture is broken up,
rolls, jitters, or flashes.
The monitor connections
may be incomplete or
the monitor may be
incorrectly adjusted.
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.
Monitor needs to be
degaussed.
Degauss the monitor. Refer to the
documentation that came with the
monitor for instructions.
Image is not centered. Position may need
adjustment.
Press the Menu button to access the
OSD menu. Select
ImageControl/ Horizontal
Position or Vertical Position to
adjust the horizontal or vertical
position of the image.
“No Connection, Check
Signal Cable” displays on
screen.
Monitor video cable is
disconnected.
Connect the video cable between
the monitor and computer.
Ä
Ensure that the computer
power is off while connecting
the video cable.
“Out of Range” displays on
screen.
Video resolution and
refresh rate are set
higher than what the
monitor supports.
Restart the computer and enter Safe
Mode. Change the settings to a
supported setting then restart the
computer so that the new settings
take effect.
Vibrating or rattling noise
coming from inside a CRT
monitor when powered on.
Monitor degaussing coil
has been activated.
None. It is normal for the
degaussing coil to be activated
when the monitor is powered on.
Solving Display Problems (Continued)
Problem Cause Solution