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Chapter 4 Troubleshooting
Problems Possible cause and remedy
5. Afterimages appear. • Use a screen saver or off timer function for a long-time
image display.
• Afterimages are particular to LCD monitors. Avoid
displaying the same image for a long time.
6. Green/red/blue/white dots or defective dots remain
on the screen.
• This is due to LCD panel characteristics and is not a
failure.
7. Interference patterns or pressure marks remain on
the screen.
• Leave the monitor with a white or black screen. The
symptom may disappear.
8. Noise appears on the screen. • When entering the singnals of analog input, change
the setting to “On” in <Signal Filter> from the <Screen>
menu.
• When entering the signals of HDCP system, the normal
images may not be displayed immediately.
• When using the long DVI cable, adjust the DVI input
level using [DVI Input Level]. (see page 29)
9. Display position is incorrect.
• Adjust image position so that it is displayed properly
within the display area using [Position]. (see page 16)
• If the problem persists, use the graphics board’s utility if
available to change the display position.
10. Vertical bars appear on the screen or a part of the
imageisickering.
• Adjust using [Clock]. (see page 15)
11. Wholescreenisickeringorblurring.
• Adjust using [Phase]. (see page 15)
12. Upper part of the screen is distorted as shown
below.
• This is caused when both composite sync (X-OR)
signal and separate vertical sync signal are input
simultaneously. Select either composite signal or
separate signal.
13. The <Smoothing> icon on the Adjustment menu
<Screen> cannot be selected.
• Smoothing setting may not be required depending on the
display resolution. (You cannot choose the smoothing
icon.)
• <Smoothing> is disabled when the screen is displayed in
the following resolutions.
• 1920 × 1200
• 960 × 600
• Select [Enlarged] during <Screen Size> in the
resolution of 1600 × 1200
• Select [Normal] during <Screen Size>.
14. The adjustment menu does not appear. • Check whether the operation lock function works.
(see page 25)
15. The auto adjust function does not work correctly. • This function does not work when digital signal is input.
• This function does not work correctly with some graphics
boards.
16. No audio output. • Check whether the mini jack cable is correctly connected.
• Check whether volume is set to 0.
• Check the setting of the PC and the audio playback
software.