10-6 Solving System ProblemsPost Error MessagesMessage ResolutionOff Board Parity Error Parity error in an expansion slot. Contact your NECComputers service representative to be sure that thememory module is installed correctly.The error format is:OFF BOARD PARITY ERRORADDR(HEX) = (XXXX)XXXX is the hex address where the error occurred.On Board Parity Error Parity error in system board memory. Contact yourNEC Computers service representative for service.Parity Error ???? Parity error in system memory at an unknown address.Contact your NEC Computers service representativefor service.Beep CodesFatal errors that occur during POST are communicated through a series of beeps. Allbeep code errors, except beep code 8, are fatal errors and do not allow the system tocontinue to boot.If beep codes occur during POST, check the items in the Problem Checklist (at the startof this chapter), verify that all the hardware is set up properly and securely connected,and try rebooting. If you still get a beep code, go to the section ìIf You NeedAssistanceî at the end of this chapter.Beep Codes are listed in the table that follows.Beep CodesNumber ofBeepsError Description1 Refresh Failure The memory refresh circuitry on themotherboard is faulty.2 Parity Error Parity error in the first 64 KB ofmemory.3 Base 64 KB MemoryFailureMemory failure in the first 64 KB.4 Timer Not Operational Memory failure in the first 64 KB ofmemory or Timer 1 on themotherboard is not functioning.
