NEC DayLite Series, Инструкция по обслуживанию и справочник

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Troubleshooting 7-5
Post Error Messages
Message Resolution
Off Board Parity Error Parity error in an expansion slot. Check that the memory module
is installed correctly.
The error format is:
OFF BOARD PARITY ERROR
ADDR(HEX) = (XXXX)
XXXX is the hex address where the error occurred.
On Board Parity Error Parity error in main board memory.
Parity Error Parity error in system memory at an unknown address.
Beep Codes
Fatal errors that occur during POST are communicated through a series of beeps. All beep code
errors, except beep code 8, are fatal errors and do not allow the notebook to continue to boot.
If beep codes occur during POST, check the items in the Problem Checklist (at the start of 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 “If You Need Assistance” at the end of
this chapter.
Beep Codes are listed in the following table.
Beep Codes
Number of
Beeps
Error Description
1 Refresh Failure The memory refresh circuit on the
main board is faulty.
2 Parity Error Parity error in the first 64 KB of
memory.
3 Base 64 KB Memory
Failure Memory failure in the first 64 KB.
4 Timer Not Operational Memory failure in the first 64 KB of
memory or Timer 1 on the main board
is not functioning.
5 Processor Failure The CPU on the main board
generated an error.
6 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 The ROM checksum value does not
match the value encoded in the BIOS.