Dell precision t7400 Quick Reference Manual

Also see for Precision T7400 DCDO: Quick reference guide Specification User guide Specifications Quick reference guide

Contents

46 Quick Reference GuideNetwork ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in theProduct Information Guide.C H E C K T H E N E T W O R K L I G H T O N T H E F R O N T O F T H E C O M P U T E R — If the linkintegrity light is off (see "Controls and Lights" in your User’s Guide), no networkcommunication is occurring. Replace the network cable.C H E C K T H E N E T W O R K C A B L E C O N N E C T O R — Ensure that the network cable isfirmly inserted into the network connector on the back of the computer and thenetwork jack.R E S T A R T T H E C O M P U T E R A N D A T T E M P T T O L O G O N T O T H E N E T W O R K A G A I NC H E C K Y O U R N E T W O R K S E T T I N G S — Contact your network administrator or theperson who set up your network to verify that your network settings are correct andthat the network is functioning.R U N T H E H A R D W A R E T R O U B L E S H O O T E R — See "Restoring Your Operating System"in your User’s Guide.Power ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in theProduct Information Guide.I F T H E P O W E R L I G H T I S G R E E N A N D T H E C O M P U T E R I S N O T R E S P O N D I N G — See"Diagnostic Lights" on page 26.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 G R E E N — The computer is in standby mode.Press a key on the keyboard, move the mouse, or press the power button to resumenormal operation.I F T H E P O W E R L I G H T I S O F F — The computer is either turned off or is not receivingpower.• Reseat the power cable in the power connector on the back of the computer and theelectrical outlet.• Bypass power strips, power extension cables, and other power protection devices toverify that the computer turns on properly.• Ensure that any power strips being used are plugged into an electrical outlet and areturned on.• Ensure that the electrical outlet is working by testing it with another device, such asa lamp.• Ensure that the main power cable and front panel cable are securely connected to thesystem board (see "System Board Components" in your User’s Guide).