Omron CPM1A operation manual Troubleshooting Flowcharts, Main Check

Troubleshooting Flowcharts Section 5-6

5-6 Troubleshooting Flowcharts

Use the following flowcharts to troubleshoot errors that occur during operation.

Main Check

Error
		No
PWR indicator lit?			Check power supply. (See page 118.)
	Yes	No	Operation stopped. Check for fatal errors.
RUN indicator lit?
			(See page 119.)
	Yes
		No
ERR/ALM indicator			Check for non-fatal errors. (See page 120.)
flashing?
	Yes
		No
Is I/O sequence			Check I/O. (See page 121.)
normal?
	Yes	No
Operating			Check operating environment. (See page 123.)
environment nor-
mal?
	Yes
Replace the CPU
Unit.

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