IBM ThinkCentre 8127 Hardware Maintenance Manual

Contents

Chapter 7. Symptom-to-FRU IndexThe Symptom-to-FRU index lists error symptoms and possible causes. The mostlikely cause is listed first. Always begin with Chapter 3, “General Checkout,” onpage 11. This index can also be used to help you decide which FRUs to haveavailable when servicing a computer. If you are unable to correct the problemusing this index, go to “Undetermined problems” on page 89.Notes:v If you have both an error message and an incorrect audio response, diagnose the errormessage first.v If you cannot run the diagnostic tests or you get a diagnostic error code when running atest, but did receive a POST error message, diagnose the POST error message first.v If you did not receive any error message, look for a description of your error symptomsin the first part of this index.v Check the hard disk drive jumper settings before you replace a hard disk drive.Hard disk drive boot errorA hard disk drive boot error (error codes 1962 and I999030X) can have thefollowing causes.Error FRU/ActionThe start-up drive is not in the bootsequence in configuration.Check the configuration and ensure thestart-up drive is in the boot sequence.No operating system installed on the bootdrive.Install an operating system on the bootdrive.The boot sector on the start-up drive iscorrupted.The drive must be formatted, do thefollowing:1. Attempt to access and recover (back-up)the failing hard disk drive.2. Using the operating systems programs,format the hard disk drive.The drive is defective. Replace the hard disk drive.Power Supply ErrorsIf the power-on indicator is not on, the power supply fan is not running, or thecomputer will not power-off, use the following procedures.Check/Verify FRU/ActionCheck the following for proper installation.v Power Cordv On/Off Switch connectorv On/Off Switch Power Supply connectorv System Board Power Supply connectorsv Microprocessor(s) connectionReseat connectorsCheck the power cord for continuity. Power Cord© Copyright IBM Corp. 2005 47