Canon multipass c3000 Service Manual (en)

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Paper feed motor drive switching
Power from the paper feed motor is switched for separation and feed of the
paper, and nozzle cleaning mechanisms by the direction of paper feed motor
rotation, the slide lock pin on the purge unit and swing gear.  When the
carriage moves in front of the purge unit, the carriage pushes the control pin,
and releases the swing gear driven by the paper feed motor.  When the paper
feed motor rotates in the paper feed direction in this state, the swing gear
rotates and moves up to the auto sheet feeder drive gear to drive the auto sheet
feeder.  Alternately, when the paper feed motor rotates in the reverse direction,
the swing gear rotates and moves up to the purge drive gear to drive the purge
unit.
When the control pin is locked, the paper feed roller is driven to feed the paper.
Part 1: Facsimile
2-10
NOTE
Auto sheet  feeder drive state
Swing gear
Purge unit
Control pin
Fixed to swing gear
Paper feed roller
Fed in forward direction by paper feed motor
Paper feed state
Paper feed roller
Fed in reverse direction by paper feed
motor
Control pin
Pushed by carriage to
release swing gear
Swing gear
Coupled with purge unit drive gear
Purge unit drive gear
Cap
Covers BJ cartridge
Pump drive state
Auto Sheet Feeder
drive gear
Pickup roller
Swing gear
Coupled with ASF drive gear
Control pin
Pushed by carriage to
release swing gear
Figure 2-7 Paper Feed Motor Drive Switching