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• Message: 0230: Shadow RAM error.
Solution: The shadow RAM failed. Refer to “Diagnosing problems” on page 113 for a diagnostic test of
the computer memory. If you added a memory module just before turning the computer on, reinstall it.
Then test the memory with Lenovo Solution Center.
• Message: 0231: System RAM error.
Solution: The system RAM failed. Refer to “Diagnosing problems” on page 113 for a diagnostic test of
the computer. If you added a memory module just before turning the computer on, reinstall it. Then test
the memory with Lenovo Solution Center.
• Message: 0232: Extended RAM error.
Solution: The extended RAM failed. Refer to “Diagnosing problems” on page 113 for a diagnostic test of
the computer memory. If you have added a memory module just before turning the computer on, reinstall
it. Then test the memory with Lenovo Solution Center.
• Message: 0250: System battery error.
Solution: The backup battery, which is used to preserve the conguration information, such as the date
and time, while the computer is tuned off, is depleted. Replace the battery and run ThinkPad Setup to
verify the conguration. If you still have a problem, have the computer serviced.
• Message: 0251: System CMOS checksum bad.
Solution: The system CMOS might have been corrupted by an application program. The computer uses
the default settings. Run ThinkPad Setup to recongure the settings. If you still see the same error code,
have the computer serviced.
• Message: 0260: System timer error.
Solution: Have the computer serviced.
• Message: 0270: Real time clock error.
Solution: Have the computer serviced.
• Message: 0271: Date and time error.
Solution: Neither the date nor the time is set in the computer. Set the date and time, using ThinkPad
Setup.
• Message: 0280: Previous boot incomplete.
Solution: Your computer was unable to complete the boot process.
Turn the computer off; then turn it on to start ThinkPad Setup. Verify the conguration and then restart the
computer either by choosing the Exit Saving Changes option under the Restart item or by pressing F10.
If you still see the same error code, have the computer serviced.
• Message: 02D0: System cache error.
Solution: The cache is disabled. Have the computer serviced.
• Message: 02F4: EISA CMOS not writable.
Solution: Have the computer serviced.
• Message: 02F5: DMA test failed.
Solution: Have the computer serviced.
116 User Guide