Troubleshooting Flowcharts
Non-fatal Error Check
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ERR indicator flashing.
Determine the cause of the error
with a Programming Device.
Yes
Is a non-fatal error
indicated?
No
Replace the CPU
Board.
Section 9-4
Identify the error, eliminate its
cause, and clear the error.
Flashing
Is the ERR
indicator flashing?
Not lit
End