IBM 343 POST Error Beep Codes

106 xSeries 343 Hardware Maintenance Manual
POST Error Beep Codes
The followingtables list POST error beep codes. Prior to system video initialization,The BIOS and
BMC use thesebeep codes to inform users on error conditions
Table 20. BMC Generated POST Beep Codes
Code Description FRU/Action
1-5-1-1 FRB failure (processor failure) 1. Processor
2. System Board
1-5-2-1 Empty Processor 1. Processor
1-5-2-2 No Processor 1. Processor
1-5-4-2 Power fault: DC power unexpectedly lost (power control failures) 1. Power Supply
2. System Board
1-5-4-3 Chipset control failure 1. System Board
1-5-4-4 Power control failure 1. System Board
Table 21. BIOS Generated POST Error Beep Codes
Beeps Error message Description FRU/Action
1 Refresh timer failure The memory refresh circuitry on the
motherboard is faulty. 1. System Board
2 Parity error Parity cannot be reset. 1. Check DIMMs
2. System Board
3 Base memory failure Base memory test failure. 1. Check DIMMs
4 System timer System timer is not operational. 1. System Board
5 Processor failure Processor failure detected. 1. Processor
6 Keyboard controller
Gate A20 failure The keyboard controller may be bad. The BIOS cannot switch to protected mode. 1. Keyboard
2. System Board
7 Processor exception
interrupt error The CPU generated an exception interrupt. 1. Processor
2. Sytem Board
8 Display memory
read/write error The system video adapter is either missing or its memory is faulty. This is not a fatal
error.
1. Video Adapter
2. System Board
9 ROM checksum error System BIOS ROM checksum error. 1. System Firmware
2. System Board
10 Shutdownregister
error ShutdownCMOS register read/write error detected. 1.System Board
11 Invalid BIOS GeneralBIOS ROMerror. 1. System Firmware
2. SystemBoard