Error messages
Symptomor error FRUor action, in sequence
Deviceaddress conflict. 1. Load“Setup Defaults”in
IBMBIOS Setup Utility.
2. Backupbattery.
3. Systemboard.
Allocationerror for device. 1. Load“Setup Defaults”in
IBMBIOS Setup Utility.
2. Backupbattery.
3. Systemboard.
Failingbits: nnnn. 1. DIMM.
2. Systemboard.
Invalidsystem configuration
data. 1. DIMM.
2. Systemboard.
I/Odevice IRQ conflict. 1. Load “Setup Defaults”in
IBMBIOS Setup Utility.
2. Backupbattery.
3. Systemboard.
Operatingsystem not found. 1. Checkthat the operating
systemhas no failure and is
installedcorrectly.
2. EnterIBM BIOS Setup
Utilityand see whether
thehard-disk drive and
thediskette drive are
properlyidentified.
3. Reseatthe hard-disk drive.
4. Reinstallthe operating
system.
5. Diskettedrive.
6. Hard-diskdrive.
7. Systemboard.
Hibernationerror. 1. Restore the system
configurationto what it
wasbefore the computer
enteredhibernation mode.
2. Ifmemory size has been
changed,re-create the
hibernationfile.
Fanerror. Fan.
Thermalsensing error. Systemboard.
Symptom-to-FRUindex
52 ThinkPad T20, T21, T22, T23 (MT 2647/2648)