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* If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result. A humming noise may be heard, but this is not a
malfunction.
Displaying this monitor’s name, serial number,
and date of manufacture.
While the monitor is receiving a video signal, press and hold the
button for more than five seconds to display this monitor’s
information box.
If the problem persists, call your service representative and give
the following information.
• Model name: GDM-5402
• Serial number
• Name and specifications of your computer and graphics board.
Picture is ghosting • Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are firmly seated in their sockets.
Picture is not centered or sized
properly
• Press the button (page 7).
• Adjust the size (page 10) or centering (page 10). Note that some video modes do not fill
the screen to the edges.
Edges of the image are curved • Adjust the geometry (page 10).
Wavy or elliptical pattern (moire)
is visible
• Set CANCEL MOIRE to ON and adjust the degree of moire cancellation until the moire is
at a minimum (page 11).
xProblems caused by the connected computer or other equipment
• Change your desktop pattern.
Color is not uniform • Degauss the monitor* (page 13). If you place equipment that generates a magnetic field,
such as a speaker, near the monitor, or if you change the direction the monitor faces, color
may lose uniformity.
• Adjust the landing (page 11).
White does not look white • Adjust the color temperature (page 12).
Letters and lines show red or blue
shadows at the edges
• Adjust the convergence (page 11).
Monitor buttons do not operate
( appears on the screen)
• If the control lock is set to ON, set it to OFF (page 13).
COLOR RETURN function does
not operate
• Before using this function, the monitor must be in normal operation mode (green power
indicator on) for at least 30 minutes. For more information on using the COLOR
RETURN function, see page 13.
• Adjust the computer’s power saving settings to keep the monitor in normal operation
mode for more than 30 minutes.
• The monitor may gradually lose its ability to perform this function due to the natural aging
of the picture tube.
A hum is heard right after the
power is turned on
• This is the sound of the auto-degauss cycle. When the power is turned on, the monitor is
automatically degaussed for two seconds.
Symptom Check these items
EASY EXPERT s BGR
5000K 6500K 930 K0
50 K00
COLOR
RETURN
AVAILABLE
AFTER WARM UP
COLOR
SER NO
:
1234567
MODEL
:
GDM 5402
MANUFACTURED
: 1999-52
INFORMATION
Example
b