The first column of the two-column tables in this index lists error codes ormessages, and the last column lists one or more suggested actions or FRUs toreplace. Take the action (or replace the FRU) that is suggested first in the list, andthen try the server again to see whether the problem has been corrected.Note: Try reseating a suspected component or reconnecting a cable beforereplacing the component.The POST BIOS code displays POST error codes and messages on the screen.Beep symptomsBeep symptoms are short tones or a series of short tones separated by pauses(intervals without sound). See the examples in the following table.Beeps Description1-2-3 v One beepv A pause (or break)v Two beepsv A pause (or break)v Three beeps4 Four continuous beepsOne beep after successfully completing POST indicates the system is functioningproperly.Note: See “System replaceable units” on page 144 to determine which components should be replaced by a fieldservice technician.Beep/symptom FRU/action1-1-2(Microprocessor register test failed) 1. Optional microprocessor (if installed)2. Microprocessor3. System board1-1-3(CMOS write/read test failed) 1. Battery2. Clear CMOS. See “Erasing a lost or forgotten password (clearing CMOSmemory)” on page 99.3. System board1-1-4(BIOS EEPROM checksum failed) 1. Recover BIOS2. System board1-2-1(Programmable Interval Timer failed) v System board1-2-2(DMA initialization failed) v System board1-2-3(DMA page register write/read failed) v System board1-2-4(RAM refresh verification failed) 1. DIMM2. System board104 xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide
