40 Solving Problemsw w w . d e l l . c o m | s u p p o r t . d e l l . c o mNo sound from headphonesVideo and Monitor ProblemsCAUTION: Before you begin any of the procedures in this section, follow the safety instructionslocated in the Product Information Guide.NOTE: See the monitor documentation for troubleshooting procedures.If the screen is blankRE I N S T A L L T H E S O U N D D R I V E R — See page 49.RU N T H E HA R D W A R E TR O U B L E S H O O T E R — See page 49.CH E C K T H E H E A D P H O N E C A B L E C O N N E C T I O N — Ensure that the headphone cable is securely insertedinto the headphone connector (see page 56).AD J U S T T H E WI N D O W S V O L U M E C O N T R O L — Click or double-click the speaker icon in the lower-rightcorner of your screen. Ensure that the volume is turned up and that the sound is not muted.CH E C K T H E M O N I T O R C A B L E C O N N E C T I O N —• 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 isdefective.• Swap the computer and monitor power cables to determine if the power cable is defective.• Check the connector for bent or broken pins. (It is normal for monitor cable connectors to have missingpins.)CH 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 thatthe monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light isblinking, 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 anotherdevice, such as a lamp.CH E C K T H E D I A G N O S T I C L I G H T S — See page 43.C7565bk1.book Page 40 Wednesday, January 26, 2005 1:37 PM
