Message Cause and action
0230: Shadow RAM error The shadow RAM failed. Testyour 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. Testyour 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 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 the 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 may have been corrupted by an application program.
The computer uses the default settings. Run the 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.
02F5: DMA test failed Havethe computer serviced.
02F6: Software NMI
failed Have the computer serviced.
02F7: Fail-safe timer NMI
failed Have the computer serviced.
1801: Attached docking
station is not supported
–shut down computer
and remove from
docking station
The computer is attached to a docking station that it does not support. Turn
off the computer and detach it from the docking station.
The power-on password
prompt appears. A power-on password or a supervisor password is set. Typethe password
and press Enter to use the computer. If the power-on passwordis not
accepted, a supervisor password may have been set. Type the supervisor
password and press Enter. If you still see the same errormessage, have the
computer serviced.
Solving computer problems
12 ThinkPad
®
A22e Service and TroubleshootingGuide