Numeric Error Codes - Lenovo ThinkPad T550 Hardware Maintenance Manual

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 38.
Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the
manual for that device.

Numeric error codes

Table 1. Numeric error codes
Symptom or error
0177
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
0183
Bad CRC of Security Settings in EFI Variable. Enter the
ThinkPad Setup program.
0187
EAIA data access error—The access to EEPROM is failed.
0188
Invalid RFID Serialization Information Area.
0189
Invalid RFID configuration information area—The
EEPROM checksum is not correct.
0190
Critical low-battery error
0191
System Security—Invalid Remote Change requested.
0199
System Security— Security password retry count
exceeded.
0270
Real Time Clock Error.
0271
Check Date and Time settings..
1802
Unauthorized network card is plugged in—Turn off and
remove the network card.
1820
More than one external fingerprint reader is attached.
Power off and remove all but the reader that you set up
within your main operating system.
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Hardware Maintenance Manual
FRU or action, in sequence
System board
1. Run the ThinkPad Setup program, and then save
current setting by pressing F10.
2. System board
System board
System board
System board
1. Charge the battery.
2. Battery
1. Run the ThinkPad Setup program, and then save
current setting by pressing F10.
2. System board
1. Run the ThinkPad Setup program, and then save
the current setting by pressing F10.
2. System board
System Real Time Clock is not functional. Have
the computer serviced.
Neither the date nor the time is set in the computer.
Enter ThinkPad Setup and set the date and time.
1. Remove wireless network card.
2. System board
Remove all but the reader that you set up for the
authentication.