IBM THINKPAD G40 Series Service And Troubleshooting Manual page 36

Solving computer problems
Message
01C9: More than one
Ethernet devices are
found. Remove one of
them. Press <Esc> to
continue.
0200: Hard disk error
021x: Keyboard error
0230: Shadow RAM error The shadow RAM failed. Test your computer's memory with PC-Doctor. If
0231: System RAM error
0232: Extended RAM
error
0250: System battery
error
0251: System CMOS
checksum bad
0260: System timer error
14
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ThinkPad G40 Series Service and Troubleshooting Guide
Solution
Your ThinkPad computer has a built-in Ethernet feature, and you cannot
add another such feature by installing an Ethernet device. If this error
message is displayed, remove the Ethernet device that you installed.
Otherwise press Esc to ignore the warning message. If this does not solve
the problem, have the computer serviced.
The hard disk is not working. Make sure that the hard disk drive is attached
firmly. Run the IBM BIOS Setup Utility; then make sure the hard disk drive
is not disabled in the Startup menu.
Make sure that there are no objects placed on the keyboard, or if you have
one, the external keyboard. 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
does, have the external keyboard serviced.
v Make sure that the external keyboard is connected to the correct
connector.
Test the computer by using PC-Doctor.
v If the computer stops during the test, have the computer serviced.
you added a memory module just before turning the computer on, reinstall
it. Then test the memory with PC-Doctor.
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.
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.
Recharge the battery for one hour by connecting the ac adapter to the
computer and run IBM BIOS Setup Utility to verify the configuration. If you
still have a probelm, replace the battery and run IBM 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 IBM BIOS Setup Utility to
reconfigure the settings. If you still see the same error code, have the
computer serviced.
Have the computer serviced.