IBM ThinkPad X22 Service & Troubleshooting Manual page 25

Solution: The EEPROM checksum is not correct (block # 0 and 1, or block #
6). 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 UUID needs to be reinstalled. Have the
computer serviced.
Message: 0190: Critical low-battery error
Solution: The computer turned off, because the battery is low. Connect the ac
adapter to the computer and charge the battery pack, or replace the battery
pack with a fully charged one.
Message: 0194: The computer is carried through the security gate
Solution: The computer has been carried through the security portal gate.
Enter the supervisor password to return your computer to the normal
operation.
Message: 0200: Hard disk error
Solution: The hard disk is not working. Make sure the hard disk drive is
attached firmly. Run the BIOS Setup Utility; then make sure the hard disk
drive is not disabled in the Startup menu.
Message: 021x: Keyboard error
Solution: Make sure that no object is placed on the keyboard or on the
external keyboard, if you have one. Turn off the computer, and turn off all
attached devices. Turn on the computer first; then turn on the attached
devices.
If you still see the same error code, do the following:
If an external keyboard is connected, do the following:
v Turn off the computer and disconnect the external keyboard; then turn on
the computer. Make sure that the built-in keyboard operates correctly. If it
was, have the external keyboard serviced.
v Make sure that the external keyboard is connected to the correct connector.
Test the computer by using PC-Doctor.
v If the computer stops during the test, have the computer serviced.
Chapter 2. Solving computer problems
13