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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

117

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Image 128
Omron CPM1A operation manual Troubleshooting Flowcharts, Main Check