Acer ED270R User Manual - Page 30

Troubleshooting Before sending your LCD monitor for repair, go through the troubleshooting checklist below to see if you can diagnose the problem. (DP mode) Problem No picture Picture abnormal Abnormal sound (only Audio input model) (optional) Status Solution LED lights up • Press the standby button to turn on. LED off • Check the power switch. • Ensure that the AC power adapter is properly connected to the monitor. LED flashes • Check that the video signal cable is properly connected to the back of the monitor. • Check whether the computer system's power is on. • Picture is unstable Check whether the graphics card specifications meet the monitor requirements. If they do not, the input signal frequency may not match. • When the full screen image disappears, The display disappears, use the OSD to select another resolution or vertical frequency. cannot be • Before changing or disconnecting the centered, or the is signal cable or turning off the monitor, too large or small. resize the image and wait for a few seconds. No audio, or the volume is too low • Check whether the audio cable is connected to the PC. • Check if the volume of the PC is set to minimum, and try to increase the volume. 20