Canon PC-D320, Service Manual

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PC-D320/PC-D340/FAX-L400 Chapter 4: Maintenance and Service
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6.7 Faculty Tests
The faculty tests are selected by pressing the numeric key 6 from the test mode menu. These
tests test the following faculties of this machine.
Test type Overview
Sensor tests Test whether the sensors are operating correctly.
Operation panel test Tests whether the key switches on the control
panel are operating correctly.
a) Sensor tests
The sensor test is selected by pressing the numeric key 3 from the faculty test menu. In this
test, you can check the status of each sensor of this machine in items 1 to 4 on the display.
You can also check if sensors that use actuators and microswitches are operating correctly
by moving the actuator or microswitch.
a-1) Toner sensor test check method
Use the following methods to test “TN on”, and “TN of”.
"TN on" check
(1) Open the printer cover.
(2) Insert a cartridge containing toner into the machine.
(3) Close the printer cover.
"TN of" check
(1) Open the printer cover.
(2) Insert the empty cartridge into the machine.
(3) Close the printer cover.
If the printer cover is closed without a cartridge being inserted, there will be
“TN on” display.