Lenovo ThinkPad i Series 1124 ThinkPad 240 User's Reference that shipped with - Page 101
Error codes or messages, In the charts, can be any character.
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Troubleshooting charts Error codes or messages Note: In the charts, x can be any character. Problem 0200 (hard disk error) 021x (keyboard error) 0220 (monitor type error) 0230 (shadow RAM error) 0231 (system RAM error) 0232 (extended RAM error) 0250 (system battery error) Action 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 properly identified. Make sure no object is placed on the keyboard or on the external keyboard, if you have one. Power off the computer and power off all attached devices. Power on the computer first; then power on the attached devices. If you still have a problem, do the following: If an external keyboard is connected: - Power off the computer and disconnect the external keyboard; then power on the computer. Make sure that your keyboard operation is correct. If it is, have the external keyboard serviced. Otherwise, have the computer serviced. - Make sure that the external keyboard is connected to the correct connector if connected to computer using the keyboard/mouse cable. Test the computer by using the PC Doctor. - If the computer stops during the test, have the computer serviced. The monitor type does not match the CMOS. Run the BIOS setup utility to verify the configuration. The shadow RAM failed. Test your computer's memory with the PC Doctor. If you have increased memory just before powering the computer on, reinstall the DIMM. Then test the memory with the PC Doctor. The system RAM failed. Test your computer's memory with the PC Doctor. If you have increased memory just before powering the computer on, reinstall the DIMM. Then test the memory with the PC Doctor. The extended RAM failed. Test your computer's memory with the PC Doctor. If you have increased memory just before powering the computer on, reinstall the DIMM. Then test the memory with the PC Doctor. The system battery is dead. Replace the battery and run the BIOS setup utility to verify the configuration. If you still have a problem, have the computer serviced. Chapter 4. Solving computer problems 89