Dell U2720Q Users Guide - Page 56

Product Specific Problems Problem Screen image is too small Cannot adjust the monitor with the buttons on the front panel What you experience Image is centered on screen, but does not fill entire viewing area OSD does not appear on the screen Possible solutions • Check the Aspect Ratio setting in the Display menu OSD. • Reset the monitor to factory settings. • Turn off the monitor, unplug the monitor power cable, plug it back, and then turn on the monitor. No Input Signal when user controls are pressed No picture, the • Check the signal source. Ensure the computer is LED light is white not in the power saving mode by moving the mouse or pressing any key on the keyboard. • Check whether the signal cable is plugged in properly. Connect the signal cable again, if necessary. • Reset the computer or video player. The picture does The picture not fill the entire cannot fill the screen height or width of the screen • Due to different video formats (aspect ratio) of DVDs, the monitor may display in full screen. • Run the built-in diagnostics. No image Black screen when using USB Type-C connection to computer, laptop, and so on • Verify if the USB Type-C interface of the device can support DP alternate mode. • Verify if the device required more than 90 W power charging. • USB Type-C interface of device cannot support DP alternate mode. • Set Windows to Projection mode. • Ensure that the USB Type-C cable is not damaged. No charging No charging when using USB Type-C connection to computer, laptop, and so on • Verify if the device can support one of 5 V/9 V/15 V/20 V charging profiles. • Verify if the Notebook requires a >90 W power adaptor. • If the Notebook requires a >90 W power adaptor, it may not charge with the USB Type-C connection. • Ensure that you use only Dell approved adapter or the adapter that comes with the product. • Ensure that the USB Type-C cable is not damaged. 56 | Troubleshooting