Lenovo ThinkVision E28u-20 28" 4K HDR Monitor - Manual (Page 19)

Adjusting the Display Image
This section describes the functions of the user controls used to adjust the display
image.
Using Direct Access Controls
When On Screen Display (OSD) is not displayed, you can use direct access
controls.
Icon Control Description
1
Power Power on/off
2
Menu
To access the OSD menu
Press to confirm the selection
Press and hold for 10 seconds to lock the menu/unlock the
menu
Enter
Press to go to the next level/submenu status of the main
menu, or the previous level of the adjustment bar
3
Enable low blue light
Press and hold for 3 seconds to enable low blue light
Disable low Blue light
Press and hold for 3 seconds to disable low blue light
Brightness
Brightness adjustment
Up/Right/
Increase
Downward Browsing Key
Increase the value on the adjustment bar/Adjustment
Press down to move to the next item
4
Volume Adjust the volume level
Down/Left/
Decrease
Upward Browsing Key
Decrease the value on the adjustment bar/Adjustment
Press down to move to the previous item
5
Input source
Signal source switching
Return to previous level in OSD mode
DDC-CI
Press and hold for 10 seconds to enable/disable the DDC-CI
function.
Exit Exit Menu
Attention:
The E28u-20 uses natural low blue light technology to protect your eyes by not only maintaining picture
quality but also reducing harmful blue light at 6500K color temperature. If you cannot confirm whether the
monitor is already in low blue light mode, you can perform the
Restore Factory Settings operation in the
OSD Item Menu Settings → Reset All Settings .
Chapter 2. Adjusting and Using the Display 2-3