IBM ThinkPad G40 Series, Service And Troubleshooting Manual

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Message Solution
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.
0280: Previous boot
incomplete
Your computer was previously unable to complete the boot process.
Turn the computer off; then turn it on to start the IBM 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.
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 Have the computer serviced.
02F6: Software NMI
failed
Have the computer serviced.
02F7: Fail-safe timer
NMI failed
Have the computer serviced.
1802: Unauthorized
network card is plugged
in - Power off and
remove the miniPCI
network card.
The Mini-PCI network card is not supported on this computer. Remove it.
1803: Unauthorized
daughter card is plugged
in - Power off and
remove the daughter
card.
The daughter card is not supported on this computer. Remove it.
1804: Unauthorized
battery is detected-
Replace it with a battery
of the correct model.
You cannot use the attached battery with this computer. Replace it with a
battery of the correct model.
Solving computer problems
Chapter 2. Solving computer problems
15