5.1.2 Imaging Problems (for both digital and analog)
Problem Possible cause and remedy
1. The screen is too bright or too dark.
• Use BRILLIANCE in the Adjustment menu to adjust
it. (The LCD monitor backlight has a limited life span.
When the screen becomes dark or begins to flicker,
contact Alphatron Marine)
2. The screen suddenly became dark. / The
“Brilliance” value in the Adjustment menu cannot be
increased.
• The monitor always monitors its internal temperature.
If the internal monitor reaches a high temperature
and exceeds the specified value, the monitor will
automatically enter the following state to decrease the
temperature.
• The “Brilliance” setting is lowered
• The “Brilliance” setting cannot be increased
• This state will return to the original when the internal
temperature decreases.
If the internal temperature increases further even after
the “Brilliance” setting is decreased, a “WARNING”
message is displayed and the monitor power is
automatically turned off. (Power indicator flashes
green.)
3. Characters are blurred.
• Check whether the PC is configured to meet the
resolution and vertical scan frequency requirements
of the monitor. (“Compatible Resolutions” in the Setup
Manual.)
• Use OUTLINE ENHANCER in the Adjustment menu to
adjust it (see Enhancing Image Outline on page 17).
4. After images appear.
• After images are particular to LCD monitors. Avoid
displaying the same image for a long time.
• Use the screen saver or power saving function to avoid
displaying the same image for extended periods of
time.
5. Green/red/blue/white dots or defective dots remain
on the screen.
• This is due to LCD panel characteristics and is not a
failure.
6. Interference patterns or pressure marks remain on
the screen.
• Leave the monitor with a white or black screen. The
symptom may disappear.
7. Noise appears on the screen.
• When entering the signals of HDCP system, the
normal images may not be displayed immediately.
49 | Maintenance
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