Table 4. Abbreviated list of POST error codes (continued)v Follow the suggested actions in the order in which they are listed in the Actioncolumn until the problem is solved.v See the parts listing in the Problem Determination and Service Guide to determinewhich components are customer replaceable units (CRU) and which componentsare field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only),” that step mustbe performed only by a trained service technician.Error code Description Action178x Fixed disk error.Note: x is the drive that has theerror.1. Run the hard disk drivediagnostic tests on drive x (see“Running the diagnosticprograms” in the ProblemDetermination and ServiceGuide on the IBM System xDocumentation CD).2. Reseat the followingcomponents, depending on theserver model:v Hot-swap models: Hard diskdrive xv Simple-swap models:a. Hard disk drive xb. Hard disk drive x cable3. Replace the followingcomponents one at a time,depending on the servermodel, in the order shown,restarting the server each time:v Hot-swap models:a. Hard disk drive xb. Hard disk drivebackplanec. (Trained servicetechnician only) Systemboardv Simple-swap models:a. Hard disk drive xb. Hard disk drive x cablec. (Trained servicetechnician only) Systemboard180x A PCI adapter requested aresource that is not available.Run the Configuration/Setup Utilityprogram and make sure that theresources that are needed by thePCI adapter are available.Chapter 5. Solving problems 33