Lenovo 4284WW9PC10B371, W520, T520i manual Numeric error codes

Note: Do the FRU replacement or other actions in the sequence shown in the column headed “FRU or action, in sequence.” If replacing a FRU does not solve the problem, put the original part back in the computer. Do not replace a nondefective FRU.

This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced next.

A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be any number.

If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to “Intermittent problems” on page 43.

Note: For a device not supported by diagnostic codes in the ThinkPad Notebooks, see the manual for that device.

Numeric error codes

Table 2. Numeric error codes

Symptom or error	FRU or action, in sequence
0177	System board
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
0182	1.	Run ThinkPad Setup. Press F9, and Enter to load
Bad CRC2. Enter UEFI BIOS Setup and load Setup		the default setting. Then save the current setting
defaults.—The checksum of the CRS2 setting in the		by pressing F10.
EEPROM is not correct.	2.	System board
0183
Bad CRC of Security Settings in EFI Variable. Enter
ThinkPad Setup.
0187	System board
EAIA data access error—The access to EEPROM is failed.
0188	System board
Invalid RFID Serialization Information Area.
0189	System board
Invalid RFID configuration information area—The
EEPROM checksum is not correct.
0190	1.	Charge the battery pack.
Critical low-battery error	2.	Battery pack
0191	1.	Run ThinkPad Setup, and then save current
System Security—Invalid Remote Change requested.		setting by pressing F10.
	2.	System board
0199	1.	Run ThinkPad Setup, and then save the current
System Security— Security password retry count		setting by pressing F10.
exceeded.	2.	System board
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 ThinkPad Setup
		to reset the time and date.
0271	Run ThinkPad Setup to reset the time and date.
Real-time clock error. Check date and time settings.

40ThinkPad T520, T520i, and W520 Hardware Maintenance Manual