POST error codesEach time you power-on the system, it performs a series of tests that check theoperation of the system and some options. This series of tests is called thePower-On Self-Test, or POST. POST does the following operations.v Checks some basic system-board operationsv Checks the memory operationv Starts the video operationv Verifies that the diskette drive is workingv Verifies that the hard disk drive is workingIf the POST finishes without detecting any problems, a single beep sounds and thefirst screen of the operating system or application program appears.Note:Type 2254, 2256, 2257, 6336, 6337, 6339, 6341, 6342, 6346, 6347, and 6348 computers defaultto come up quiet (no beep and no memory count and checkpoint code display) when noerrors are detected by POST.To enable beep and memory count and checkpoint code display when a successful POSToccurs, do the following:1. Select Start Options in the Configuration/Setup Utility program (see “Setup Utilityprogram” on page 10).2. Set Power-On Self-Test to Enhanced.If the POST detects a problem, an error message appears on the screen. A singleproblem can cause several error messages to appear. When you correct the cause ofthe first error message, the other error messages probably will not appear on thescreen the next time you turn on the system.In the following index, X can represent any number.POST Error Code FRU/Action000SCSI Adapter not enabled 1. Verify adapter device and Bus Masterfields are enabled in PCI configurationprogram. See documentation shippedwith computer.02X 1. SCSI Adapter08XCheck SCSI terminator installation. 1. SCSI Cable2. SCSI Terminator3. SCSI Device4. SCSI Adapter101System board interrupt failure 1. System Board102System board timer error 1. System Board106 1. System Board110System board memory parity error 1. Memory Module2. System BoardChapter 6. Symptom-to-FRU Index 93
