Canon PD-82K Service Manual page 68

CHAPTER 4
Lower cassette paper out sensor (PS1207)
Upper cassette paper level sensor (PS1205, PS1206)
Upper cassette sensor (PS1202)
Upper cassette paper out sensor (PS1208)
Upper/lower cassette paper size detection switch (SW1601, SW1602, SW1603, SW1604)
5) Check if the LED flashes by moving the sensor levers or the switches.
Do not move more than one sensor lever at the same time. Move them one by one to find
which lever is faulty. Also, be sure not to touch the switches with hand directly.
6) If the LED does not light, the sensor or the switch is faulty.
c. Paper pick-up test
Make the condition of the DIP switches as follows and turn ON the power to start the paper pick-
up test.
SW201-1: ON, SW201-2: OFF, SW201-3: OFF, SW201-4: ON
Once the paper pick-up is started, the test is continued till the paper runs out.
When the SW201-1 is switched OFF, the paper pick-up mode is canceled and the paper pick-
up test is interrupted. The test is re-started by switching SW201-1: ON again.
Notes: 1. Set only one sheet of paper into the tray.
When the paper deck enters the paper pick-up mode and executes the paper pick-up
operation, the printer does not operate. The paper picked up and fed into the print-
er causes a jam. Since the paper pick-up operation is continued until the paper runs
out, placing plural sheets causes the paper jam one after another.
2. Make sure to set all DIP switches OFF at the end of the paper pick-up test.
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