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Troubleshooting Guide
10
10 Troubleshooting Guide
Not Optimum Mode is displayed. This message appears if the signal from the 
graphics card exceeds the maximum resolution or 
frequency for the product.
Change the maximum resolution and frequency to 
suit the product performance, referring to 
Standard Signal Mode Table (91page).
The images on the screen look distorted. Check the cable connection to the product (Refer 
to "3.2 Connecting and Using a PC")
The screen is not clear. The screen is blurry. Adjust Coarse(57page) and Fine(58page).
Remove any accessories (video extension cable, 
etc.) and try again.
Set the resolution and frequency to the 
recommended level. (Refer to "11.1 General")
The screen appears unstable and shaky. Check that the resolution and frequency for the 
PC are within the range of resolution and 
frequency compatible with the product. Next, if 
required, change the settings, referring to 
Standard Signal Mode Table (91page) in this 
manual and the INFORMATION menu on the 
product.
There are shadows or ghost images left on the 
screen.
The screen is too bright. The screen is too dark. Adjust Brightness(52page) and 
Contrast(53page).
Screen color is inconsistent. Change the COLOR settings. 
(Refer to " Configuring Tint")
The colors on the screen have a shadow and are 
distorted.
Change the COLOR settings. 
(Refer to " Configuring Tint")
White does not really look white. Change the COLOR settings. 
(Refer to " Configuring Tint")
There is no image on the screen and the power 
LED blinks every 0.5 to 1 second.
The product is operating in power-saving mode.
Press any key on the keyboard or move the 
mouse to return to normal operating mode.
Sound issue
There is no sound.  Check the connection of the audio cable or adjust 
the volume. 
Check the volume.
Screen issue