Canon IR2800, IR3300, IR2200 manual Controlling the Deck Lifter Motor M2D, 12 P

CHAPTER 8 PAPER DECK-L1

1.5.2 Controlling the Deck Lifter Motor (M2D)

The deck lifter motor control circuit is found on the side deck driver PCB. F08-105-02 is a block diagram of the PCB.

The combination circuit found in the figure consists of various logic circuits, and a spe- cific combination is used to rotate the deck lifter motor clockwise or counterclockwise: out- put signals from sensors and deck lifter motor drive command and deck lifter ascent com- mand from the DC controller of the host machine.

If the deck lifter position sensor (PS4D) does not detect the lifter within a specific period of time in spite of the presence of the deck lifter UP signal, an alarm (code: 05) will be indi- cated in service mode: DISPLAY>ALARM1>BODY.

[1] Conditions for Moving Up the Lifter

• The deck is connected to its host machine. → The deck set signal (DECK_MOUNT_SENS) is ‘1’.

•The compartment is closed. → The deck open detection signal (DECK_OPEN_SENS) is ‘1’.

•The compartment is closed. → The deck open detecting switch (DECK_OPEN_SW) is ON.

•The deck upper limit detection signal (LIFT_M_DOWN) is ‘0’.

•The deck lifter UP signal (LIFT_M_UP) is ‘0’.

The above conditions will move up the lifter.

[2] Conditions for Moving Down the Lifter

•The compartment is open. The deck open detection signal (DECK_OPEN_SNS) is ‘0’.

•The deck lifter lower limit detection signal (LIFT_LOW_LIMIT) is ‘0’ and, in addition, the deck lifter position detection signal (PAP_TOP_SENS) is ‘0’.

•The deck lifter motor DOWN signal (LIFT_M_DOWN) is ‘0’.

•The deck lifter UP signal (LIFT_M_UP) is ‘1’.

The above conditions move down the lifter.

8-12 P COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001