Sony GDM-5502 Mode D'emploi page 20

Symptom
Picture is ghosting
Picture is not centered or sized
properly
Edges of the image are curved
Wavy or elliptical pattern (moire)
is visible
Color is not uniform
White does not look white
Letters and lines show red or blue
shadows at the edges
Monitor buttons do not operate
( appears on the screen)
COLOR RETURN function does
not operate
: PRESET
COLOR
COLOR
RETURN
AVA I LABLE
AFTER
WARM UP
1 6 0 0 x 1 2 0 0 / 8 5 H z
A hum is heard right after the
power is turned on
* 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.
20
Check these items
• Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are firmly seated in their sockets.
• Set the AUTO ( ) function to OK (on) in the SIZE/CENTER menu (page 11).
• Adjust the size or centering (page 11). Note that with some input signals and/or graphics
boards the periphery of the screen is not fully utilized.
• Adjust the geometry (page 12).
• Adjust the degree of moire cancellation until the moire is minimal (page 13).
xProblems caused by the connected computer or other equipment
• Change your desktop pattern.
• 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 13).
• Adjust the color temperature (page 14).
• Adjust the convergence (page 12).
• If the control lock is set to ON, set it to OFF (page 16).
• 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 15.
• 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.
• This is the sound of the auto-degauss cycle. When the power is turned on, the monitor is
automatically degaussed for a few seconds.