Dell Precision Workstation 450 User Manual

Also see for Precision Workstation 450: System information guide System information guide Setup and quick reference guide Setup and quick reference guide Setup and quick reference guide

Contents

Dell Precision Workstation 450 User Manual Manual pdf 145 page image

Power ProblemsFill out the Diagnostics Checklist as you complete these checks.Printer Problems1 link integrity light2 network activity lightRestart the computer and try to log on to the network againCheck your network settings — Contact your network administrator or the person who set up your network to verify that your networksettings are correct and that the network is functioning.Check for interrupt request conflicts — See "Resolving Software and Hardware Incompatibilities."CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.Adjust the Power Properties — Your computer may be in standby or hibernate mode. For information on power conservation modes, seeyour operating system documentation.If the power light is green and the computer is not responding — See "Diagnostic Lights."If the power light is blinking green — The computer is in standby mode. Press a key on the keyboard or move the mouse to resume normaloperation.If the power light is off — The computer is either turned off or is not receiving power.l Reseat the power cable into both the power connector on the back of the computer and the electrical outlet.l If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power stripis turned on.l Ensure that the electrical outlet is working by testing it with another device, such as a lamp.l Bypass power protection devices, power strips, and power extension cables to verify that the computer turns on.l See "Diagnostic Lights."l If the problem persists, contact Dell.If the power light is steady amber — The computer is receiving electrical power, but an internal power problem might exist.l Ensure that the microprocessor power cable is securely connected to the system board.l See "Diagnostic Lights."l If the problem persists, contact Dell.If the power light is blinking amber — A device might be malfunctioning or incorrectly installed.l Remove and then reinstall the memory modules.l Remove and then reinstall any cards.l Remove and then reinstall the video card, if applicable.l See "Diagnostic Lights."l If the problem persists, contact Dell.Eliminate interference — Electrical appliances on the same circuit or operating near the computer can cause interference. Other causes ofinterference are:l Power extension cablesl Keyboard and mouse extension cablesl Too many devices on a power stripl Multiple power strips connected to the same electrical outletNOTE: Dell does not cover the printer's warranty. If you need technical assistance for your printer, call the printer's manufacturer. See the printerdocumentation for the correct phone number.Check the printer documentation — See the printer documentation for setup and troubleshooting information.Ensure that the printer is turned on — See the printer documentation for power button information.Verify the printer cable connections —l See the printer documentation for cable connection information.l Ensure that the printer cables are securely connected to the printer and the computer.