I F T H E P O W E R L I G H T I S B L I N K I N G A M B E R The computer is receiving electrical power, but an internal power problem may exist.

Ensure that the voltage selection switch is set to match the AC power at your location (if applicable).

Ensure that all components and cables are properly installed and securely connected to the system board (see "System Board Components" in your User’s Guide).

I F T H E P O W E R L I G H T I S S T E A D Y A M B E R A device may be malfunctioning or incorrectly installed.

Remove and then reinstall all memory modules (see "Removing the Front Panel" in your User’s Guide).

Remove and then reinstall any expansion cards, including graphics cards (see "Cards" in your User’s Guide).

E L I M I N A T E I N T E R F E R E N C E Some possible causes of interference are:

Power, keyboard, and mouse extension cables

Too many devices connected to the same power strip

Multiple power strips connected to the same electrical outlet

Printer Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTE: If you need technical assistance for your printer, contact the printer’s manufacturer.

C H E C K T H E P R I N T E R D O C U M E N T A T I O N See the printer documentation for setup and troubleshooting information.

E N S U R E T H A T T H E P R I N T E R I S T U R N E D O N

C H E C K T H E P R I N T E R C A B L E C O N N E C T I O N S

See the printer documentation for cable connection information.

Ensure that the printer cables are securely connected to the printer and the computer.

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.

VE R I F Y T H A T T H E P R I N T E R I S R E C O G N I Z E D B Y W I N D O W S

Windows XP:

1Click StartControl PanelPrinters and Other HardwareView installed printers or fax printers.

2If the printer is listed, right-click the printer icon.

Quick Reference Guide

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Dell T7400 manual Printer Problems, If the printer is listed, right-click the printer icon