Dell Precision T7610 Owner's Manual

Also see for Precision T7610: Technical specifications

Contents

Dell Precision T7610 Owner's Manual Manual pdf 67 page image

6Troubleshooting Your ComputerYou can troubleshoot your computer using indicators like Diagnostic Lights, Beep Codes, and Error Messages during theoperation of the computer.Diagnostic LEDsNOTE: The diagnostic LEDs only serve as an indicator of the progress through the Power-On Self Test (POST)process. These LEDs do not indicate the problem that caused the POST routine to stop.The diagnostic LEDs are located on the front of the chassis next to the power button. These diagnostic LEDs are onlyactive and visible during the POST process. Once the operating system starts to load, they turn off and are no longervisible.Each LED has two possible states of OFF or ON. The most significant bit is labeled with the number 1, and the other threeare labeled 2, 3, and 4, as you go down or across the LED stack. The normal operating condition after POST is for all fourLEDs to be ON and then turn off as the BIOS hands control over to the operating system.NOTE: The diagnostic lights will blink when the power button is amber or off, and will not blink when it is white.Table 13. POST Diagnostic LED PatternsDiagnostic LEDs• The computer is either turned offor is not receiving power• The computer is booted andoperating normally.• If the computer is turned off ,connect the AC power-supply andpower-on the computer.PCI device configuration activity is inprogress or PCI device failure wasdetected.• Remove all peripheral cards fromthe PCI and PCI-E slots and rebootthe computer. If the computerboots, add the peripheral cardsback one by one until you find thebad one.A possible processor failure hasoccurred. • Re-seat the processor.Memory modules are detected, but amemory power failure has occurred. • If two or more memory modulesare installed, remove the modules,then reinstall one module and re-start the computer. If thecomputer starts normally,continue to install additionalmemory modules (one at a time)until you have identified a faultymodule or reinstalled all moduleswithout error. If only one memorymodule is installed, try moving it toa different DIMM connector andre-start the computer.67