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Troubleshooting Flowcharts
7-4
Troubleshooting Flowcharts
Main Check
118
Use the following flowcharts to troubleshoot errors that occur during operation.
Error
PWR indicator lit?
Yes
RUN indicator lit?
Yes
ERR indicator
flashing?
Not lit
Is I/O sequence
normal?
Yes
Operating
environment normal?
Yes
Replace the CPU
Board.
No
Check power supply. (See page 119.)
No
Operation stopped. Check for fatal errors.
(See page 120.)
Flashing
Check for non-fatal errors. (See page 121.)
No
Check I/O. (See page 122.)
No
Check operating environment. (See page 124.)
Section
7-4
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