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F&n-time error messages (continued)
Countdown message
Number
Error Tone Codes
If power-on diagnostic tests detect an error but cannot display
an error message, the computer sounds an error tone code. The
tone code is a distinct pattern of beeps that identifies the error,
such as one beep-two beeps-one beep. If the error is serious
(fatal) the computer locks up, but if the error is not serious
(non-fatal) you can continue using your computer.
Error
n u m b e r M e s s a g e
Unresolved bustime-out
986
NMI
987
Bustime-out NMI; dot n
988
Software NMI
970
Unexpected software
interrupt
971
Unexpected hardware
interrupt
Solution
The option card is
defective; replace the
card and run the ECU;
contact your dealer or
servicer if the problem
persists
Run the ECU; contact
your dealer or servicer if
the problem persists
Run the ECU; contact
your dealer or servicer if
the problem persists
An error has occurred in
a software utility; turn the
system off and back on
again; contact your
dealer or servicer if the
problem persists
Indicates that any of a
variety of hardware
problems has occurred;
check all cables,
connections, jumpers,
and option card settings
run the ECU; contact
your dealer or servicer if
the problem persists
Troubleshooting
A - 1 5
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