IBM 8479 Hardware Maintenance Manual - Page 97

Symptom-to-FRU index This index supports xSeries 200 servers. Notes: 1. Check the configuration before you replace a FRU. Configuration problems can cause false errors and symptoms. 2. The default configuration can be loaded by starting the system and then pressing the reset button four times, waiting 15 seconds between each press. Once the configuration has reset to the default, it must be saved in Setup to be stored in CMOS. 3. For IBM devices not supported by index, refer to the manual for that device. 4. Always start with "General checkout" on page 1. 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. Beeps 1-2-3 4 Note: One beep after successfully completing POST indicates the system is functioning properly. Description v One beep v A pause (or break) v Two beeps v A pause (or break) v Three Beeps Four continuous beeps Beep/Symptom FRU/Action Repeating Beeps 1. DIMM (endless loop) (memory error) 2. System Board One Long and Three Short Beeps (video error) 1. Video adapter (if present) 2. System Board One Long and Two Short Beeps (video error) 1. Video adapter (if present) 2. Reseat monitor cable 3. System Board © Copyright IBM Corp. 2001 89