Canon imageRUNNER ADVANCE C5255 Series Service Manual page 667

● Diagnosis Time
Diagnosis is completed in approx. 3 minutes.
The result is displayed on the Control Panel.
<When the diagnosis result is normal>
<When an error is detected by diagnosis>
Detailed information is displayed under the judgment result. In detailed information, the name
of the test where an error was detected is indicated.
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Troubleshooting > Controller Self Diagnosis > Controller Self Diagnosis > Controller System Error Diagnosis
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6 Troubleshooting > Controller Self Diagnosis > Controller Self Diagnosis > Controller System Error Diagnosis
<How to view the error result>
The following screen is an enlarged view of the detailed information indicated above.
Explanation of the detailed error information is described.
[no] means that optional PCBs are not mounted.
When [no] is displayed although an optional PCB is mounted, it means that an error has been
occurring.
[NG] means that an error occurred to PCBs mounted as standard.
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