IBM 2254 Hardware Maintenance Manual

Also see for 2254: Hardware Maintenance Manual User guide

Contents

© Copyright IBM Corp. 2000 71Chapter 6. Symptom-to-FRU IndexSDRAM memory errors . . . . . . . . . . . . . . . . . . . . . . 72Hard disk drive boot error. . . . . . . . . . . . . . . . . . . . 72Power Supply Errors. . . . . . . . . . . . . . . . . . . . . . . . . 72Diagnostic error codes . . . . . . . . . . . . . . . . . . . . . . . 74Beep symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91No-beep symptoms . . . . . . . . . . . . . . . . . . . . . . . . . 93POST error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Miscellaneous error messages . . . . . . . . . . . . . . . 107Undetermined problems . . . . . . . . . . . . . . . . . . . . 109The Symptom-to-FRU index lists error symptoms and possible causes. The mostlikely cause is listed first. Always begin with "General Checkout" on page 1. Thisindex can also be used to help you decide which FRUs to have available whenservicing a computer. If you are unable to correct the problem using this index, go to“Undetermined problems” on page 109.Notes:• If you have both an error message and an incorrect audio response, diagnose the errormessage first.• 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.• If you did not receive any error message, look for a description of your error symptoms inthe first part of this index.• Check the hard disk drive jumper settings before you replace a hard disk drive.Important:Some errors are indicated with a series of beep codes (see “Beep symptoms” on page 91).Type 2254, 2256, 2257, 6336, 6337, 6339, 6341, 6342, 6346, 6347, 6348 computers default to comeup quiet (no beep and no memory count and checkpoint code display) when no errors aredetected by POST. To enable beep and memory count and checkpoint code display when asuccessful POST occurs, 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.The processor is a separate FRU from the system board; the processor is not included with thesystem board FRU.