IBM P96 Mode D'emploi page 27

Symptom
Screen image is not centered
or sized properly
Edges of the image are
curved
White lines show red or blue
shadows at edges
Picture is fuzzy
Picture bounces or has wavy
oscillations
Picture is flickering
Picture appears to be
ghosting
Wavy or elliptical (moire)
pattern is visible
Two fine horizontal lines
(wires) are visible
IMAGE RESTORATION
function does not operate
OPT I ON
AVA I L AB L E
A F T ER
WARM– UP
COLOR
RE T URN
Hum is heard right after the
power is turned on
• If the problem persists, call the IBM HelpCenter.
In the US. call 1-800-772-2227
In Canada call 1-800-565-3344
• Note the model name and the serial number of your monitor. Also note the make and name of your computer and graphic
board.
Check these items
• Press button (page 5).
• Adjust the size or centering (page 7).
Some video modes do not fill the screen to the edges. This problem tends to occur with
certain graphic boards.
• Adjust the geometry (page 8).
• Adjust the convergence (page 10).
• Adjust the contrast and brightness (page 6).
• Degauss the monitor (page 11).
If you place equipment which generates a magnetic field, such as a loudspeaker, near
the monitor, or you change the direction of the monitor, color may lose uniformity.
The degauss function demagnetizes the metal frame of the CRT to obtain a neutral
field for uniform color reproduction. If a second degauss cycle is needed, allow a
minimum interval of 20 minutes for the best result.
• If red or blue shadows appear along the edges of images, adjust the convergence
(page 10).
• Select MOIRE ADJUST and adjust the moire cancellation effect (page 12).
• Isolate and eliminate any potential sources of electric or magnetic fields. Common
causes for this symptom are electric fans, fluorescent lighting, or laser printers.
• If you have another monitor close to this monitor, increase the distance between them
to reduce the interference.
• Try plugging the monitor into a different AC outlet, preferably on a different circuit.
• Try the monitor on a different computer in a different room.
• Set the refresh rate on the computer to obtain the best possible picture by referring to
your computer's manual.
• Eliminate the use of video cable extensions and/or video switch boxes if this symptom
occurs. Excessive cable length or a weak connection can produce this symptom.
• Select MOIRE ADJUST and adjust the moire cancellation effect (page 12).
The moire may be modified depending on the connected computer.
• Change your desktop pattern. Due to the relationship between resolution, monitor dot
pitch and the pitch of some image patterns, certain screen backgrounds sometimes
show moire.
• These wires stabilize the vertically striped aperture grille (page 16). This aperture grille
allows more light to pass through to the screen giving the Trinitron CRT more color
and brightness.
• 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 IMAGE
RESTORATION function, see "Restoring the color" on 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.
• When the power is turned on, the auto-degauss cycle is activated. While the auto-
degauss cycle is activated, a hum may be heard. The same hum is heard when the
monitor is manually degaussed. This is not a malfunction.
Getting Started Additional Information
Additional Information
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