Acer AL1521 AL1521 User Guide - Page 14
Technical Support Faq
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TECHNICAL SUPPORT (FAQ) Problem & Question Power LED is not on No Plug & Play Picture is fuzzy Picture bounces or a wave pattern is present in the picture The power LED is ON (light blue) but there's no video or no picture. Missing one of the primary colors (RED, GREEN, or BLUE) Possible Solution *Check that the Power Switch is in the ON position *Power Cord should be connected *Check that the PC system is Plug & Play compatible *Check that the Video Card is Plug & Play compatible *Check that the D-15 plug pin of Video Cable is not bent. *Adjust the Contrast and Brightness Controls. *Move electrical devices that may cause electrical interference. *The Computer Power Switch should be in the ON position. *The Computer Video Card should be snugly seated in its slot. *Make sure the video cable is properly connected to the computer. *Inspect the video cable and make sure none of the pins are bent. *Make sure the computer is operational by hitting the CAPS LOCK key on the keyboard while observing the CAPS LOCK LED. The LED should either turn ON or OFF after hitting the CAPS LOCK key. *Inspect the video cable and make sure that none of the pins are bent. 41L1500-786-1A 英文 13