Hardware Maintenance Manual
Page 46
... not working. 1. The hard disk is set in the computer. DIMM. 2. System battery is cleared. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 0251 System CMOS checksum bad-Default configuration used. System board. 0270 Real-time clock error. 1. Replace...hard-disk drive. 2. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 0252 Password checksum bad - Symptom-to reset the time and date. (continued) 42 ThinkPad A21e The shadow RAM failure at offset nnnn. Run IBM BIOS Setup Utility to -FRU index ...
... not working. 1. The hard disk is set in the computer. DIMM. 2. System battery is cleared. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 0251 System CMOS checksum bad-Default configuration used. System board. 0270 Real-time clock error. 1. Replace...hard-disk drive. 2. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 0252 Password checksum bad - Symptom-to reset the time and date. (continued) 42 ThinkPad A21e The shadow RAM failure at offset nnnn. Run IBM BIOS Setup Utility to -FRU index ...
Hardware Maintenance Manual
Page 47
.... 02F4 EISA CMOS not writable. 02F5 DIMM test failure. 02F6 Software NMI failure. 02F7 Fail-safe timer NMI failure. 1801 Attached docking station is not supported. System board. 1. External FDD cable. 3. Replace the backup battery. 3. DIMM. 2. Diskette drive. 2. Shut down the computer and remove it from the docking station ThinkPad A21e 43 FRU or...
.... 02F4 EISA CMOS not writable. 02F5 DIMM test failure. 02F6 Software NMI failure. 02F7 Fail-safe timer NMI failure. 1801 Attached docking station is not supported. System board. 1. External FDD cable. 3. Replace the backup battery. 3. DIMM. 2. Diskette drive. 2. Shut down the computer and remove it from the docking station ThinkPad A21e 43 FRU or...