Troubleshooting Flowcharts - Omron CPM1A Operation Manual

Troubleshooting Flowcharts

5-6

Troubleshooting Flowcharts

Main Check
Use the following flowcharts to troubleshoot errors that occur during operation.
Error
PWR indicator lit?
Yes
RUN indicator lit?
Yes
ERR/ALM indicator
flashing?
Yes
Is I/O sequence
normal?
Yes
Operating
environment nor-
mal?
Yes
Replace the CPU
Unit.
No
Check power supply. (See page 128.)
No
Operation stopped. Check for fatal errors.
(See page 129.)
No
Check for non-fatal errors. (See page 130.)
No
Check I/O. (See page 131.)
No
Check operating environment. (See page 133.)
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