IBM 865951Y Hardware Maintenance Manual - Page 160

Symptom-to-FRU index This index supports Netfinity 5000 - Type 8659 servers. Notes 1. Check the configuration before you replace a FRU. Configuration problems can cause false errors and symptoms. 2. For IBM devices not supported by index, refer to the manual for that device. 3. Always start with "General Checkout" on page 5. 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 indicated the system is functioning properly. Beeps 1-2-3 4 Beep/Symptom 1-1-2 (Processor register test failed) 1-1-3 (CMOS write/read test failed) 1-1-4 (BIOS EEPROM checksum failed) 1-2-1 (Programmable Interval Timer failed) 1-2-2 (DMA initialization failed) Description One beep A pause (or break) Two beeps A pause (or break) Three beeps Four continuous beeps FRU/Action 1. Optional Processor (if installed) 2. Processor 1. Battery 2. System Board 1. DIMM 2. System Board 1. System Board 1. System Board 152 Netfinity Server HMM