Lenovo X120E Turn off the computer and discharge CMOS. Then, Restart the computer, 02D0, 02F0

Table 2. Numeric error codes (continued)

Symptom or error (beeps, if any)	FRU or action, in sequence
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 (ThinkPad Setup for ThinkPad X120e) to reset
		the time and date.
0254	Turn off the computer and discharge CMOS. Then
System NV7 Volume checksum bad—Default	restart the computer.
configuration 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 (ThinkPad Setup for ThinkPad X120e) 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 (ThinkPad Setup for ThinkPad X120e) to reset
		the time and date.
	3.	System board.
0271	Run BIOS Setup Utility (ThinkPad Setup for ThinkPad
Date and time error— either the date nor the time is set in	X120e) to reset the time and date.
the computer.
(two short beeps)
0280	1.	Load “Setup Default” in BIOS Setup Utility
Previous boot incomplete—Default configuration used.		(ThinkPad Setup for ThinkPad X120e).
(two short beeps)	2.	DIMM.
	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)
02F7	1.	DIMM.
Fail-safe timer NMI failed	2.	System board.
(two short beeps)
1802	1.	Remove the Mini PCI network card.
Unauthorized network card is plugged in—Turn off and	2.	System board.
remove the miniPCI network card.
(two short beeps)
1804	1.	Remove the wireless WAN card.
Unauthorized WAN card is plugged in—Power off and	2.	System board.
remove the WAN card.

Chapter 4. Related service information 35