T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)
Page 57
...Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 DIMM. 2. System board. Diskette drive. 2. Replace the backup battery. 3. System ...board. 1. DIMM. 2. System board. 1. System board. Load Setup Defaults in sequence 1. Symptom-to-FRU index Symptom or error 0232 Extended RAM error-Extended RAM fails at offset nnnn. 0250 System battery error-System battery is dead. 0251 System CMOS...
...Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 DIMM. 2. System board. Diskette drive. 2. Replace the backup battery. 3. System ...board. 1. DIMM. 2. System board. 1. System board. Load Setup Defaults in sequence 1. Symptom-to-FRU index Symptom or error 0232 Extended RAM error-Extended RAM fails at offset nnnn. 0250 System battery error-System battery is dead. 0251 System CMOS...
46P4564 - English - Service and Troubleshooting Guide for T23
Page 20
... Otherwise, press Esc to the correct connector. If you still have a problem, have the computer serviced. 0251: System CMOS checksum bad The system CMOS might have the external keyboard serviced. Then test the memory with PC-Doctor. Test the computer, using PC-Doctor. Then...computer serviced. 0270: Real time clock error Have the computer serviced. 12 ThinkPad® T23 Service and Troubleshooting Guide Then test the memory with PC-Doctor. 0250: System battery error The system battery is connected, do the following: If an external keyboard is depleted. ...
... Otherwise, press Esc to the correct connector. If you still have a problem, have the computer serviced. 0251: System CMOS checksum bad The system CMOS might have the external keyboard serviced. Then test the memory with PC-Doctor. Test the computer, using PC-Doctor. Then...computer serviced. 0270: Real time clock error Have the computer serviced. 12 ThinkPad® T23 Service and Troubleshooting Guide Then test the memory with PC-Doctor. 0250: System battery error The system battery is connected, do the following: If an external keyboard is depleted. ...