Lenovo 41896HU Hardware Maintenance Manual page 35

Symptom or error
0232
Extended RAM error— Extended RAM
fails at offset nnnn.
0250
System battery error—System battery is
dead.
0251
System CMOS checksum bad— Default
configuration used.
0252
Password checksum bad - Passwords
cleared.
0253
EFI Variable Block Data was destroyed.
0254
System NV7 Volume checksum bad -
Default configuration used.
0260
System timer error.
0270
Real-time clock error.
0271
Check date and time settings.
0280
Previous boot incomplete—Default
configuration used.
Related service information
FRU or action, in sequence
1. DIMM.
2. System board.
1. Charge the backup battery for more
than 8 hours by connecting the AC
adapter.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
1. Charge the backup battery for more
than 8 hours by connecting the AC
adapter.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
1. Reset the password by running
BIOS Setup Utility.
2. Check to see if battery may need
replacement.
1. Use crisis boot to recover system
bios.
2. If the same error reoccurs, contact
your service representative.
1. Load default configuration by running
BIOS Setup Utility.
1. Charge the backup battery for more
than 8 hours by connecting the AC
adapter.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
3. System board.
1. Charge the backup battery for more
than 8 hours by connecting the AC
adapter.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
3. System board.
1. Verify the battery is properly inserted.
If necessary, replace the battery.
2. Set time and date using the Setup
Utility or use into operating system to
set the time and date.
1. Load "Setup Default" in BIOS Setup
Utility.
2. DIMM.
3. System board.
31