IBM 4500R Hardware Maintenance Manual - Page 119

Symptom-to-FRU index This index supports Netfinity 4500R servers. The Symptom-to-FRU lists symptoms, errors, and the possible causes. The most likely cause is listed first. Use this Symptom-to-FRU index to help you decide which FRUs to have available when servicing the computer. The POST BIOS displays POST error codes and messages on the screen. Beep symptoms Beep symptoms are short tones or a series of short tones separated by pauses (intervals without sound). See the following examples. Note: One beep after successfully completing POST indicates the system is functioning properly. 1-2-3 Beeps 4 • One beep • A pause (or break) • Two beeps • A pause (or break) • Three Beeps Four continuous beeps Description Beep/Symptom FRU/Action 1-1-2 (Processor register test failed) 1. Optional Processor (if installed) 2. Processor 1-1-3 (CMOS write/read test failed) 1. Battery 2. System Board 1-1-4 (BIOS EEPROM 1. System Board checksum failed) 1-2-1 (Programmable Interval Timer failed) 1. System Board 1-2-2 (DMA initialization failed) 1. System Board 1-2-3 (DMA page 1. System Board register write/read failed) 1-2-4 (RAM refresh 1. DIMM verification failed) 2. System Board 1-3-1 (1st 64K RAM 1. DIMM test failed) © Copyright IBM Corp. 2000 111