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Symptom
Color is not uniform
You cannot adjust the monitor
with the buttons on the front
panel
White does not look white
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
Hum is heard right after the
power is turned on
Check these items
• Degauss the monitor (page 15).
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.
• Adjust the landing (pages 13 – 14).
• If the control lock function is set to on, set it to off using the OPTION OSD (page 16).
• Adjust the color temperature (pages 12 – 13).
• Check that the 5 BNCs are connected in the correct order (from left to right: Red–Green–
Blue–HD–VD) (page 6).
• Press the ASC button (page 7).
• Adjust the size or centering (page 10).
• Some video modes do not fill the screen to the edges. This problem tends to occur with
certain video boards.
• Adjust the geometry (page 11).
• Adjust the convergence (pages 13 – 14).
• Adjust the contrast and brightness (page 9).
• Degauss the monitor (page 15).
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
(pages 13 – 14).
• If the moire is cancelled, the picture may become fuzzy. Decrease the moire cancellation
effect (pages 13 – 14).
• 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 the
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.
• Cancel the moire (pages 13 – 14).
The moire may be modified depending on the connected computer.
• Due to the relationship between resolution, monitor dot pitch and the pitch of some image
patterns, certain screen backgrounds sometimes show moire. Change your desktop pattern.
• These wires stabilize the vertically striped aperture grille (page 19). This aperture grille
allows more light to pass through to the screen giving the Trinitron CRT more color and
brightness.
• When the power is turned on, the auto-degauss cycle is activated. While the auto-degauss
cycle is activated (3 seconds), a hum may be heard. The same hum is heard when the
monitor is manually degaussed. This is not a malfunction.
Getting Started
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