38 Troubleshooting
Is the prompt on the display illuminated in orange?
If the LED is illuminated in orange, the power management mode is active. Press any button
on the computer keyboard or move the mouse. If that does not help, check the signal cable
connectors. If any pin is bent or broken off, please contact your dealer to get necessary
support.
Is the prompt on the display not illuminated at all?
Check the power supply mains socket, the external power supply and the mains switch.
The image is distorted, flashes or flickers:
Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and
then
select the correct resolution, refresh rate and make adjustments based on these instructions.
You are running the monitor at its native resolution, but the image is still distorted.
Images from different input sources may appear distorted or stretched on the monitor
running at its native resolution. To have the optimal display performance of each type of
input sources, you can use the "Display Mode" function to set a proper aspect ratio for the
input sources. See
Display Mode on page 28
for details.
The image is displaced in one direction:
Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then
select the correct resolution, refresh rate and make adjustments based on these instructions.
The OSD controls are inaccessible:
•
To unlock the OSD controls when the OSD is preset to be locked, press and hold the “MENU”
key for 15 seconds to enter the “OSD Lock” option and make changes.
•
Alternatively, you may use the
or
keys to select “NO” in the “OSD Lock” submenu
from the “OSD Settings” menu (under SYSTEM), and all OSD controls will be accessible.
No sound can be heard from the built-in speakers:
•
Check whether Line In is properly connected.
•
Increase the volume (volume may be muted or too low).
•
Remove your headphone and/or external speakers. (If they are connected to the monitor, the
built-in speakers are automatically muted.)
No sound can be heard from the connected external speakers:
•
Remove your headphone (if the headphone is connected to the monitor).
•
Check whether the headphone jack is properly connected.
•
If the external speakers are USB-powered, check whether the USB connection is OK.
•
Increase the volume (volume may be muted or too low) on the external speakers.
The light sensor of the monitor does not work well.
The light sensor is located at the front bottom of the monitor. Please check:
•
If the Eye Protect function is set to ON. Check Ergonomics > Eye Protect.
•
If there are any obstacles in front of the sensor that keep the sensor from detecting the light
properly.
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