Canon MultiPASS C50 Service Manual page 179

6.2.7 Faculty tests
The faculty tests are selected by pressing the 6 button from the test mode menu. These tests test the
following faculties of this fax.
Test type
Sensor tests
Operation panel test
Line signal reception test
a) Sensor tests
The sensor test is selected by pressing the 3 button from the faculty test menu. In this test, you can
check the status of each sensor of this fax in item 1 on the display.
You can also check if sensors that use actuators and microswitches are operating correctly by moving
the actuator or microswitch.
The sensor tests cannot be used to test all of the sensors. The following sensors cannot
be tested with the sensor tests:
Home position sensor, paper edge sensor, and ink detection sensor.
NOTE
If any of these sensor are faulty, an error message or service error code will appear to
indicate the faulty sensor.
Overview
Test whether the sensors are operating correctly.
Tests whether the button switches on the control panel are
operating correctly.
Tests whether the NCU board signal sensor and frequency
counter are operating correctly.
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Chapter 3: Maintenance & Service