Dell Dimension E520 Owner's Manual - Page 45

Video and Monitor Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTE: See the monitor documentation for troubleshooting procedures. If the screen is blank CHECK THE MONITOR CABLE CONNECTION - • Ensure that the graphics cable is connected as shown on the setup diagram for your computer. • If you are using a graphics extension cable and removing the cable solves the problem, the cable is defective. • Swap the computer and monitor power cables to determine whether the power cable is defective. • Check the connector for bent or broken pins. (It is normal for monitor cable connectors to have missing pins.) C H E C K T H E M O N I T O R P O W E R L I G H T - If the power light is off, firmly press the button to ensure that the monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light is blinking, press a key on the keyboard or move the mouse. TE S T T H E E L E C T R I C A L O U T L E T - Ensure that the electrical outlet is working by testing it with another device, such as a lamp. C H E C K T H E D I A G N O S T I C L I G H T S - See "Diagnostic Lights" on page 47. If the screen is difficult to read C H E C K T H E M O N I T O R S E T T I N G S - See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor self-test. M O V E T H E S U B W O O F E R A W A Y F R O M T H E M O N I T O R - If your speaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the monitor. M O V E T H E M O N I T O R A W A Y F R O M E X T E R N A L P O W E R S O U R C E S - Fans, fluorescent lights, halogen lamps, and other electrical devices can cause the screen image to appear "shaky." Turn off nearby devices to check for interference. ROTATE THE MONITOR TO ELIMINATE SUNLIGHT GLARE AND POSSIBLE INTERFERENCE Solving Problems 45