Common Troubleshooting - INNOCN 27C1U-D Mode D'emploi

Common troubleshooting

The following table contains general information about common monitor problems you might encounter
and the possible solutions.
Common Symptoms
No display after turning monitor
ON (screen is black but power s
upply lights is ON)
No display after turning monitor
ON (not boot, black screen & no
power lights)
Poor Focus. Picture is fuzzy,
blurry, or ghosting
Missing Pixels. LCD screen has
spots
Safety Related Issues
(Visible signs of smoke or sparks)
Image is centered on screen, but
does not fill entire viewing area
The screen appears yellow
Control panel keys do not work
I cannot adjust the brightness/
contrast ratio through OSD
I cannot get higher refresh rate
on my monitor
After plugged in USB Type-C
from computer to monitor,
there is no video
USB interface is not working
Possible Solutions
• Ensure that the video cable connecting the monitor and the computer is properly connected
and secure.
• Make sure if the operating system had entered hibernation, sleep or power-save mode. Press
any key (Enter key / Power key) or move the mouse to wake it up.
• Check for bent or broken pins in the video cable connector.
• Ensure that the correct input source is selected in the Input Source menu.
• Replace other identical signal cable (HDMI / DisplayPort) to take cross-test.
• Verify that the power outlet is functioning properly using any other electrical equipment.
• Make sure the power button on the front panel is normal for boot and pressed fully.
• Check for bent or broken pins in the video cable connector.
• Eliminate video extension cables.
• Reset the monitor to factory settings.
• Change the video resolution to the correct resolution and aspect ratio.
• If the words are still blurry, please try enabling or disabling CLEAR TYPE function from windows
• Cycle power On-Off.
• Pixel that is permanently Off is a natural defect that can occur in LCD technology.
• For more information on Dell Monitor Quality and Pixel Policy, see INNOCN Support site
at: http://www.innocn.com
• Do not perform any troubleshooting steps.
• Contact INNOCN immediately.
• Check the Aspect Ratio setting in the Display menu OSD.
• Check the resolution setting in your PC
• Reset the monitor to factory settings.
• Make sure the device was not set to "Care Eyes mode"
• Check here: OSD→Picture Setting→Contextual mode→Care Eyes mode
• Press only one key at a time.
• Restart the computer
• Make sure to have a valid video signal going through the monitor before
you can turn on the OSD
• Make sure the "contextual mode"is OFF before setting brightness and contrast ratio.
• Check here: OSD→Picture Setting→Contextual mode→off
• Make sure your video card supports that feature.
• Also make sure you are using DisplayPort to connect from your computer to your monitor.
• Not every computer/phone 's USB Type-C port will support video out signals. Please check
your cable and your computer/phone to make sure those will support a video signal.our monitor.
• Check to see if you plugged a USB-B uplink cable(included in the package) from your computer
to the monitor's USB-B port. Without an uplink cable to the computer, the USB ports on the back
of the monitor will not work.
• Check that your monitor is turned On.
• Reconnect the uplink cable to your computer.
• Reconnect the USB peripherals(downstream connector).
• Switch Off and then turn On the monitor again.
• Reboot the computer.
• Some USB devices like external portable HDD require higher electric current; connect the device
directly to the computer system.
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