IBM x 340 Series, Hardware Maintenance Manual

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© Copyright IBM Corp. 2000
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Symptom-to-FRU index
This index supports xSeries 340 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.
Beeps Description
1-2-3 • One beep
• A pause (or break)
• Two beeps
• A pause (or break)
• Three Beeps
4 Four continuous beeps
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 checksum
failed)
1. System Board
1-2-1 (Programmable Interval
Timer failed)
1. System Board
1-2-2
(DMA initialization failed) 1.
System Board
1-2-3 (DMA page register write/read
failed)
1. System Board
1-2-4 (RAM refresh verification
failed)
1. DIMM
2. System Board
1-3-1
(1st 64K RAM test failed) 1.
DIMM
1-3-2 (1st 64K RAM parity test
failed)
1. DIMM
2. System Board
2-1-1 (Secondary DMA register
failed)
1. System Board