Lenovo ThinkPad T490 Hardware Maintenance Manual page 43

Table 2. Numeric error codes (continued)
Symptom or error (beeps, if any)
0191
System Security - Invalid Remote Change requested.
0199
System Security - Security password retry count
exceeded.
0251
System CMOS checksum bad - Default configuration
used.
0271
Real-Time Clock Error. 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.
2000
ThinkVantage Active Protection sensor diagnostics failed.
2100
Detection error on Main HDD (HDD0)
2101
Detection error on Main HDD (HDD0)
2110
Read error on M.2 Main Slot (HDD0)
2111
Read error on M.2 Main Slot (HDD0)
2200
Machine Type and Serial Number are invalid.
2201
Machine UUID is invalid
2202
Brand Name is invalid.
FRU or action, in sequence
1. Run the ThinkPad Setup program, and then save
current setting by pressing F10.
2. Replace the system board.
1. Run the ThinkPad Setup program. The retry count
will be reset. Then save the current settings by
pressing F10.
2. Replace the system board.
1. Charge the coin-cell battery for more than 8 hours
by connecting the ac power adapter.
2. Replace the coin-cell battery and run the ThinkPad
Setup program to reset the time and date.
1. Run ThinkPad Setup to reset the time and date
2. Replace the coin-cell battery and run the ThinkPad
Setup program to reset the time and date.
1. Remove the network card.
2. Replace the system board.
Remove all but the reader that you set up for the
authentication
Have the computer serviced.
1. Reseat the M.2 solid-state drive.
2. Replace the M.2 solid-state drive.
3. Replace the system board.
1. Reseat the M.2 solid-state drive.
2. Replace the M.2 solid-state drive.
3. Replace the system board.
1. Reseat the M.2 solid-state drive.
2. Replace the M.2 solid-state drive.
3. Replace the system board.
1. Reseat the M.2 solid-state drive.
2. Replace the M.2 solid-state drive.
3. Replace the system board.
Replace the system board.
Replace the system board.
Have the computer serviced.
Chapter 4
.
Related service information
37