Sony CPD-4201M Service Manual page 10

Symptom Check these items
Picture is fuzzy • Adjust the brightness and contrast (page 5).
• Degauss the monitor* (page 9).
• If CANCEL MOIRE is ON, the picture may become fuzzy. Decrease the moire cancellation
effect (page 9) or set CANCEL MOIRE to OFF.
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.
• Check the Graphic Enhancement mode, if you are using a still picture application such as
Excel.
Picture is not centered or sized • Press the Auto Sizing and Centering button (page 5).
properly
• Adjust the size (page 7) or centering (page 7). Note that some video modes do not fill the
screen to the edges.
Edges of the image are curved • Adjust the geometry (page 7).
Wavy or elliptical pattern (moire) is
• Cancel the moire (page 9).
visible
xProblems caused by the connected computer or other equipment
• Change your desktop pattern.
Color is not uniform • Degauss the monitor* (page 9). 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.
White does not look white • Adjust the color temperature (page 8).
Letters and lines show red or blue
• Adjust the convergence (page 8).
shadows at the edges
Monitor buttons do not operate • If the control lock is set to ON, set it to OFF (page 9).
COLOR RETURN does not function • COLOR RETURN does not work unless the monitor has been in normal operation (Green
power indicator) for at least 30 minutes. See page 9 for detailed information about Image
OPTION
Restoration.
• In order to keep the monitor "on", you may need to check the PC's power saving setting.
AVAILABLE
• The monitor may gradually lose its ability to perform this function due to the natural aging of
AFTER
WARM UP the picture tube.
COLOR
RETURN
A hum is heard right after the • This is the normal sound of the auto-degauss cycle. When the power is turned on, the monitor
power is turned on
is automatically degaussed for three seconds.
* 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.
Additional Information
US
13