Symptom or error FRU or action, in sequence
0270
Real-time clock error.
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
0271
Date and time error — Neither
the date nor the time is set in
the computer.
Run IBM BIOS Setup Utility to
reset the time and date.
02B2
Incorrect drive A type.
1. Diskette drive.
2. External FDD cable.
3. I/O card.
02F4
EISA CMOS not writable.
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. Replace the backup battery.
3. System board.
02F5
DIMM test failure.
1. DIMM.
2. System board.
02F6
Software NMI failure.
1. DIMM.
2. System board.
02F7
Fail-safe timer NMI failure.
1. DIMM.
2. System board.
Symptom-to-FRU index
ThinkPad A20m/p, A21m/p and A22m/p 51