IBM N51 Series

Symptom/Error FRU/Action
“ERROR: Invalid
command!”
1. Retry the command.
2. Try another copy of the
software or have the
customer contact the
software manufacturer
or dealer and report
the problem.
3. System Board
“ERROR: Keyboard not
responding or not
connected!”
1. Check keyboard
connections.
2. Keyboard
3. System Board
“ERROR: Memory parity
failure!”
1. Run Advanced
Diagnostics Memory
Test to check base
and extended
memory.
2. Memory Module
3. System Board
“ERROR occurred while
reading Boot Sector.”
1. Advanced
Diagnostics diskette
“ERROR occurred while
reading FAT table.”
1. Advanced
Diagnostics diskette
“ERROR occurred while
reading root directory.”
1. Advanced
Diagnostics diskette
“ERROR: Please replace
the backup battery!”
1. If backup battery was
recently replaced, run
Setup program to
configure computer.
2. Backup Battery
3. System Board
“Error programming FLASH
Device. Retrying.”
1. System Board
“ERROR: RAM failure!
Address: XXXX”
1. Inspect memory
modules for proper
installation.
2. Swap the installed
memory modules with
known good modules.
3. Memory Board
4. System Board
“ERROR: RAM failure!
SIMM module: XXXX”
1. Inspect the memory
modules for proper
installation.
2. Swap the installed
memory modules with
known good modules.
3. Memory Board
4. System Board
58 IBM Mobile Systems HMM - Volume 1