Acer X191 User Guide - Page 9

Troubleshooting Problem Power LED is not ON y y No picture y y y y Picture shows y inappropriate colors Picture bounces or a y wave pattern is y present in the picture Image is not sized or y centered properly y Possible Solutions Check to see if the power switch is in the ON position. Ensure that the Power Cord is connected. Check to see if the power switch is in the ON position. Ensure that the power cord is connected. Ensure the video cable is securely connected to the back of the monitor and the computer. Move the mouse or press any key on the keyboard to bring the monitor out of "active off" mode. See color adjustment (p. 8) to adjust RGB color. Move or switch off electrical devices that may be causing interference. Inspect the monitor's video cable and ensure that none of the pins are bent. Press select/auto key and the monitor will automatically optimize the position of your display. See horizontal and vertical position adjustment (p. 7). Caution: Do not attempt to service or open the monitor or computer yourself. Please refer all servicing to qualified service personnel if the "Troubleshooting" section cannot solve your problems. 9