Deck Lifter; Detecting The Presence/Absence Of Paper - Canon iR2200 Service Manual

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CHAPTER 8 PAPER DECK-L1

1.3 Deck Lifter

The lifter of the deck is connected to a reel by means of a cable, and is driven by the deck

lifter motor (M2D), whose direction of rotation changes the direction (up/down) of the

movement of the lifter.

When the compartment is slid inside the deck, the deck open detecting switch (SW1D) is

pushed; the deck then starts to move up when the deck open sensor (PS9D) detects the light-

blocking plate. It will stop to move up when the deck lifter position sensor (PS4D) detects

the top face of the stack of paper placed on it.

If, for some reason, the lifter fails to stop moving up after the sensor lever blocks the deck

lifter position sensor, the deck lifter upper limit sensor (PS3D) will go ON to stop it and

thereby to prevent image.

When the deck open switch (SW100D) is pushed, on the other hand, the lifter starts to

move down, and continues to move down until it leaves the sensor lever of the deck paper

supply position sensor (PS8D; falling edge of the sensor output).

When supplied, the paper pushes the lever of the deck paper supply position sensors, and

the lifter will move farther down until the stack of paper leaves the sensor lever.

Each time paper is supplied, the lifter repeats its descent movement until the deck lifter

lower limit detecting switch (SW2D) is pushed (point of maximum paper supply).

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CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

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Ir2800 Ir3300