Lenovo ThinkPad X60 1706 Supplementary Manual page 20

Solving computer problems
Message
0232: Extended RAM
error
0250: System battery
error
0251: System CMOS
checksum bad
0260: System timer error
0270: Real time clock
error
0271: Date and time
error
0280: Previous boot
incomplete
02D0: System cache error The cache is disabled. Have the computer serviced.
02F4: EISA CMOS not
writable
02F5: DMA test failed
02F6: Software NMI
failed
02F7: Fail-safe timer
NMI failed
1802: Unauthorized
network card is plugged
in - Power off and
remove the miniPCI
network card.
1803: Unauthorized
daughter card is plugged
in-Power off and remove
the daughter card.
12
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ThinkPad X60 Series Service and Troubleshooting Guide
Solution
The extended RAM failed. Test your computer's memory with PC-Doctor. If
you have increased memory just before turning the computer on, reinstall it.
Then test the memory with PC-Doctor.
The backup battery, which is used to preserve the configuration information,
such as the date and time, while the computer is turned off, is depleted.
Replace the battery and run BIOS Setup Utility to verify the configuration. If
you still have a problem, have the computer serviced.
The system CMOS might have been corrupted by an application program.
The computer uses the default settings. Run BIOS Setup Utility to
reconfigure the settings. If you still see the same error code, have the
computer serviced.
Have the computer serviced.
Have the computer serviced.
Neither the date nor the time is set in the computer. Set the date and time,
using the BIOS Setup Utility.
Your computer was previously unable to complete the boot process.
Turn the computer off; then turn it on to start the BIOS Setup Utility. Verify
the configuration 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.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
The PCI Express Mini Card network card is not supported on this computer.
Remove it.
The daughter card is not supported on this computer. Remove it.