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Chapter 5 Troubleshooting
5-1. No Picture
Problem
1. No picture
• Power indicator does not light up.
• Power indicator is lighting white.
• Power indicator is lighting orange.
• Power indicator is flashing orange
and white.
2. The message below appears.
• This message appears when no
signal is input.
Example:
• The message shows that the
input signal is out of the specified
frequency range.
Example:
• This message shows that a device
that is not compatible with DP Alt
Mode is connected to the USB-C
connector.
Example:
28
Chapter 5 Troubleshooting
Possible cause and remedy
• Check whether the power cord is connected properly.
• Turn on the main power switch on the rear side of the monitor.
• Touch
.
• Turn off the main power switch on the rear side of the monitor, and
then turn it on again a few minutes later.
• Increase "Brightness", "Contrast", or "Gain" in the Setting menu (see
"Color Adjustment" (page
• Switch the input signal.
• Turn the setting "On" for "Compatibility Mode" on the "Administrator
Settings" menu (see
"Compatibility Mode" (page
• Move the mouse or press any key on the keyboard.
• Check whether the PC is turned on.
• Turn off the main power switch on the rear side of the monitor, and
then turn it on again.
• This symptom may occur during DisplayPort input.
- Use a signal cable recommended by us for the connection. Turn
the monitor off and on.
• This symptom may occur during USB-C input.
- Disconnect and connect the USB cable that is plugged in to the
upstream port (USB-C).
- Turn off the main power switch on the rear side of the monitor, and
then turn it on again.
This message appears when the signal is not input correctly even
though the monitor is functioning properly.
• The message shown left may appear, because some PCs do not
output the signal immediately after power-on.
• Check whether the PC is turned on.
• Check whether the signal cable is connected properly.
• Switch the input signal.
• Turn off the main power switch on the rear side of the monitor, and
then turn it on again.
• Check whether the PC is configured to meet the resolution and
vertical scan frequency requirements of the monitor (see
Supported Resolutions" (page
• Reboot the PC.
• Select an appropriate setting using the graphics board's utility. Refer
to the User's Manual of the graphics board for details.
• Check whether a signal cable recommended by us is used.
• Check whether the connected device is compatible with DP Alt
Mode. Contact the device manufacturer for information about
compatibility with DP Alt Mode.
19)).
26)).
10)).
"1-3.
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