3com 3cr13500 User Guide

Interface Connections and First Time Start-Up

The following tables list POST error beep codes. Before system video 
initialization, the BIOS and BMC use these beep codes to inform users on 
error conditions.

1-5-1-1 

FRB failure (processor failure)

1-5-2-1

Empty Processor

1-5-2-2 

No Processor

1-5-4-2 

Power fault: DC power unexpectedly lost (power 
control failures)

1-5-4-3

Chipset control failure

1-5-4-4 

Power control failure

1 

Refresh timer failure 

The memory refresh circuitry on the 
motherboard is faulty.

2 

Parity error 

Parity can not be reset.

3

 Base memory failure 

Base memory test failure. See Table 53. 
POST Memory Error 3-Beep Codes for 
additional error details.

4 

System timer

 System timer is not operational.

5 

Processor failure 

Processor failure detected.

6 

Keyboard controller Gate 
A20 failure

The keyboard controller may be bad. The 
BIOS cannot switch to protected mode.

7 

Processor exception 
interrupt error 

The CPU generated an exception 
interrupt.

8 

Display memory read/write 
error

The system video adapter is either 
missing or its memory is faulty. This is 
not a fatal error.

9 

ROM checksum error 

System BIOS ROM checksum error.

10 

Shutdown register error 

Shutdown CMOS register read/write 
error detected.

11 

Invalid BIOS 

General BIOS ROM error.