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02F4
EISA CMOS not writable.
1. Load Setup Defaults in
IBM BIOS Setup
Utility.Replace the backup
battery.
2. 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.
Error messages
Symptom or error FRU or action, in sequence
Device address conflict
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. Backup battery.
3. System board.
Allocation error for device
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. Backup battery.
3. System board.
Failing bits: nnnn
1. DIMM.
2. System board.
Invalid system configuration
data
1. DIMM.
2. System board.
I/O device IRQ conflict
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. Backup battery.
3. System board.
Operating system not found
1. Enter IBM BIOS Setup
Utility and see whether
the hard disk drive and
the diskette drive are
properly identified.
2. Diskette drive.
3. Hard disk drive.
4. System board.
50 ThinkPad X20, X21, X22, X23, X24