Dell Dimension 8400 Owner's Manual - Page 38

www.dell.com | support.dell.com I F Y O U H A V E P R O B L E M S W I T H A D E L L I E E E 1 3 9 4 D E V I C E - Contact Dell (see page 123). I F Y O U H A V E P R O B L E M S W I T H A N O N - D E L L I E E E 1 3 9 4 D E V I C E - Contact the manufacturer of the IEEE 1394 device. Keyboard Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CHECK THE KEYBOARD CABLE - • Ensure that the keyboard cable is firmly connected to the computer. • Shut down the computer (see page 59), reconnect the keyboard cable as shown on the setup diagram for your computer, and then restart the computer. • Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins. • Remove keyboard extension cables and connect the keyboard directly to the computer. TE S T T H E K E Y B O A R D - Connect a properly working keyboard to the computer, and try using the keyboard. R U N T H E H A R D W A R E TR O U B L E S H O O T E R - See page 58. Lockups and Software Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. The computer does not start up 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 page 49. ENSURE THAT THE POWER CABLE IS FIRMLY CONNECTED TO THE COMPUTER AND TO THE ELECTRICAL OUTLET 38 Solving Problems