Lenovo ThinkPad T550 User Manual page 115

Solution: Checksum of the Security settings in the EFI Variable is not correct. Enter ThinkPad Setup
to check security settings, Press F10 and then press Enter to restart the system. If you still have a
problem, have the computer serviced.
• Message: 0187: EAIA data access error
Solution: The access to EEPROM is failed. Have the computer serviced.
• Message: 0188: Invalid RFID Serialization Information Area
Solution: The EEPROM checksum is not correct (block # 0 and 1). The system board should be replaced,
and the box serial number needs to be reinstalled. Have the computer serviced.
• Message: 0189: Invalid RFID configuration information area
Solution: The EEPROM checksum is not correct (block # 4 and 5). The system board should be replaced,
and the universally unique identifier (UUID) needs to be reinstalled. Have the computer serviced.
• Message: 0190: Critical low-battery error
Solution: The computer turned off, because the battery power is low. Connect the ac power adapter to
the computer and charge the batteries.
• Message: 0191: System Security - Invalid remote change requested
Solution: The system configuration change has failed. Confirm the operation and try again. To clear the
error, enter ThinkPad Setup.
• Message: 0199: System Security - Security password retry count exceeded.
Solution: This message is displayed if you enter a wrong supervisor password more than three times.
Confirm the supervisor password and try again. To clear the error, enter ThinkPad Setup.
• Message: 0270: Real Time Clock Error.
Solution: System Real Time Clock is not functional. Have the computer serviced.
• Message: 0271: Check Date and Time settings.
Solution: Neither the date nor the time is set in the computer. Enter ThinkPad Setup and set the date and
time.
• Message: 1802: Unauthorized network card is plugged in - Power off and remove the network card.
Solution: The wireless network card is not supported on this computer. Remove it.
• Message: 1820: More than one external fingerprint readers are attached.
Solution: Power off and remove all but the reader that you set up within your main operating system.
• Message: 2100: Detection error on HDD0 (Main HDD)
Solution: The hard disk is not working. Have the hard disk serviced.
• Message: 2101: Detection error on SSD1 (M.2)
Solution: The M.2 SSD device is not working. Have the M.2 SSD device serviced.
• Message: 2102: Detection error on SSD2 (M.2)
Solution: The M.2 SSD device is not working. Have the M.2 SSD device serviced.
• Message: 2110: Read error on HDD0 (Main HDD)
Solution: The hard disk is not working. Have the hard disk serviced.
• Message: 2111: Read error on SSD1 (M.2)
Solution: The M.2 SSD device is not working. Have the M.2 SSD device serviced.
• Message: 2112: Read error on SSD2 (M.2)
Solution: The M.2 SSD device is not working. Have the M.2 SSD device serviced.
• Message: 2200: Machine Type and Serial Number are invalid.
Solution: Machine Type and Serial Number are invalid. Have the computer serviced.
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Chapter 8 Troubleshooting computer problems
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