Detecting An Error - Canon imageRUNNER 2270 Service Manual

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Protective Circuit Block Configuration Diagram

9.4.2 Detecting an Error

As part of its protective mechanism, the machine checks for the following error conditions:

The fixing temperature

fails to increase.

In the course of start-up control, the thermistor

reading is less than 30 deg C 1 sec after the start

of power supply or is less than 70 deg C 2 sec

after the start of power supply; the machine will

identify an error condition if any of the

foregoing continues for 200 msec or more.

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