Lenovo E31 Numeric error codes continued, System NV7 Volume checksum bad- Default configuration

Table 2. Numeric error codes (continued)

Symptom or error (beeps, if any)	FRU or action, in sequence
0230	System board.
Shadow RAM error—Shadow RAM fails at offset nnnn.
(two short beeps)
0231	1.	DIMM.
System RAM error—System RAM fails at offset nnnn.	2.	System board.
(two short beeps)
0232	1.	DIMM.
Extended RAM error— Extended RAM fails at offset nnnn.	2.	System board.
(two short beeps)
0250	1.	Charge the backup battery for more than 8 hours
System battery error—System battery is dead.		by connecting the ac adapter.
(two short beeps)	2.	Replace the backup battery and run BIOS Setup
		Utility to reset the time and date.
0251	1.	Charge the backup battery for more than 8 hours
System CMOS checksum bad— Default configuration		by connecting the ac adapter.
used.	2.	Replace the backup battery and run BIOS Setup
(two short beeps)		Utility to reset the time and date.
0254	Turn off the computer and discharge CMOS. Then
System NV7 Volume checksum bad- Default configuration	restart the computer.
used
(two short beeps)
0260	1.	Charge the backup battery for more than 8 hours
System timer error.		by connecting the ac adapter.
(two short beeps)	2.	Replace the backup battery and run BIOS Setup
		Utility to reset the time and date.
	3.	System board.
0270	1.	Charge the backup battery for more than 8 hours
Real-time clock error.		by connecting the ac adapter.
(two short beeps)	2.	Replace the backup battery and run BIOS Setup
		Utility to reset the time and date.
	3.	System board.
0271	Run BIOS Setup Utility to reset the time and date.
Date and time error—Neither the date nor the time is set
in the computer.
(two short beeps)
0280	1.	Load “Setup Default” in BIOS Setup Utility.
Previous boot incomplete— Default configuration used.	2.	DIMM.
(two short beeps)	3.	System board.
02D0	1.	CPU.
System cache error.	2.	System board.
(two short beeps)
02F0	1.	CPU.
CPU ID:xx Failed.	2.	System board.
02F5	1.	DIMM.
DMA test failed.	2.	System board.
(two short beeps)
02F6	1.	DIMM.
Software NMI failed	2.	System board.
(two short beeps)

36Hardware Maintenance Manual