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Message Solution
021x: Keyboard error 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, using PC-Doctor.
v If the computer stops during the test, have the computer serviced.
0220: Monitor type error The monitor type does not match the type specified in CMOS. Run the IBM
BIOS Setup Utility to make sure that your monitor type matches the type
specified in the utility.
0230: Shadow RAM error The shadow RAM failed. Test your computer’s memory with PC-Doctor. If
you added a memory module just before turning the computer on, reinstall
it. Then test the memory with PC-Doctor.
0231: System RAM error The system RAM failed. Test your computer’s memory with PC-Doctor. If
you added a memory module just before turning the computer on, reinstall
it. Then test the memory with PC-Doctor.
0232: Extended RAM
error
The extended RAM failed. Test your computer’s memory with PC-Doctor. If
you increased memory just before turning the computer on, reinstall it. Then
test the memory with PC-Doctor.
0250: System battery
error
The system battery is dead. Replace the battery and run IBM BIOS Setup
Utility to verify the configuration. If you still have a problem, have the
computer serviced.
0251: System CMOS
checksum bad
The system CMOS might have been corrupted by an application program.
The computer uses the default settings. Run IBM BIOS Setup Utility to
reconfigure the settings. If you still see the same error code, have the
computer serviced.
0260: System timer error Have the computer serviced.
0270: Real time clock
error
Have the computer serviced.
0271: Date and time error Neither the date nor the time is set in the computer. Set the date and time,
using the IBM BIOS Setup Utility.
02D0: System cache error The cache is disabled. Have the computer serviced.
02F4: EISA CMOS not
writable
Have the computer serviced.
Solving computer problems
14
ThinkPad
®
A22 Service and Troubleshooting Guide