3COM Security Switch 6200 Hardware and Software Users Guide 3-5Interface Connections and First Time Start-UpPOST ErrorBeep CodesThe following tables list POST error beep codes. Before system videoinitialization, the BIOS and BMC use these beep codes to inform users onerror conditions.BMC Generated POST Beep CodesBIOS Generated POST Error Beep CodesCode Description1-5-1-1 FRB failure (processor failure)1-5-2-1 Empty Processor1-5-2-2 No Processor1-5-4-2 Power fault: DC power unexpectedly lost (powercontrol failures)1-5-4-3 Chipset control failure1-5-4-4 Power control failureBeeps Error message Description1 Refresh timer failure The memory refresh circuitry on themotherboard 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 foradditional error details.4 System timer System timer is not operational.5 Processor failure Processor failure detected.6 Keyboard controller GateA20 failureThe keyboard controller may be bad. TheBIOS cannot switch to protected mode.7 Processor exceptioninterrupt errorThe CPU generated an exceptioninterrupt.8 Display memory read/writeerrorThe system video adapter is eithermissing or its memory is faulty. This isnot a fatal error.9 ROM checksum error System BIOS ROM checksum error.10 Shutdown register error Shutdown CMOS register read/writeerror detected.11 Invalid BIOS General BIOS ROM error.