v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, Type 4364, 4365, or 4366 server,” on page 15 to determine whichcomponents are customer replaceable units (CRU) and which components are field replaceable units(FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.Error code Description Action178x Fixed disk error.Note: x is the drive that has the error 1. Run the hard disk drive diagnostic tests on drivex (see “Running the diagnostic programs” in theProblem Determination and Service Guide on theIBM System x Documentation CD).2. Reseat the following components, depending onthe server model:v Hot-swap models: Hard disk drivev Simple-swap models:a. Hard disk drive xb. Hard disk drive x cable3. Replace the following components one at a time,depending on the server model, in the ordershown, restarting the server each time:v Hot-swap models:a. Hard disk drive xb. Hard disk drive backplanec. (Trained service technician only) Systemboardv Simple-swap models:a. Hard disk drive xb. Hard disk drive x cablec. (Trained service technician only) Systemboard1800 Unavailable PCI hardware interrupt. 1. Run the Configuration/Setup Utility program andadjust the adapter settings.2. Remove each adapter one at a time, restartingthe server each time, until the problem is isolated.1801 An adapter has requested memoryresources that are not available 1. Run the Configuration/Setup Utility program andmake sure that sufficient memory is installed inthe server.2. Run the Configuration/Setup Utility program anddisable some other resources to make morespace available.3. Replace the following components one at a time,in the order shown, restarting the server eachtime:a. Each adapterb. (Trained service technician only) SystemboardChapter 5. Diagnostics 75