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.
Summary of Contents for VERSA ULTRALITE
Page 42: ...3 Disassembly and Reassembly Required Tools and Equipment Disassembly Reassembly...
Page 58: ...5 Illustrated Parts Breakdown Illustrated Parts Breakdown Parts List...
Page 65: ...7 Troubleshooting Problem Checklist Startup Problems Diagnostics...
Page 73: ...8 NEC Computers Information Services Service and Support Functions Technical Support...
Page 76: ...9 Specifications System Components Memory Map Interrupt Controllers...
