COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)II. PICK-UP ASSEMBLYA. Pick-Up from the Cassette1. Pick-Up OperationThe printer unit moves up the paper inside the cassette using a lifter to pick-up posi-tion; then, it brings down a rotating pick-up roller to come into contact with the paper forpick-up.The series of pick-up operations is executed in response to the PRNT* signal, and themain motor is used to bring down the pick-up roller to the stack of paper, while the pick-up motor is used to rotate the pick-up roller.When the printer board1 sends the PRNT* signal to the printer unit, the main motor(M4) and the pick-up motor (M5) start to rotate. When the cassette pick-up solenoid (SL3)turns on, the drive of the main motor is sent to the cassette pick-up cam through gears,and the rotation of the cam moves the lift arm.At the same time, the drive of the pick-up motor is sent through the feeding rollergears to reach the cassette pick-up roller. The rotating cassette pick-up roller movesdown to the stack of paper, and a single sheet of paper is picked up, at the end of whichthe pick-up roller moves to its initial position and stops.When the pick-up motor rotates clockwise, the pick-up roller of the cassette 1, feed-ing roller 1, and separation roller are driven to pick up paper from the cassette 1. Whenthe motor rotates counterclockwise, on the other hand, the pick-up roller of the cassette2, feeding roller 1, and separation roller are driven to pick up paper from the cassette 2.*1: Reader controller PCB (when making prints with the reader unit installed).Figure 5-201CHAPTER 5 PICK-UP/FEEDING SYSTEM5-3Pick-up rollerFeeding roller 1Separation rollerPick-up roller shaftCassette pick-up camMain motorPick-up motorCassette pick-upsolenoid (SL3)Lift-up camLift-up releasing armPick-up roller shaft fixing armPrint paperFeeding roller gearGearLift armCassette holding plateM4M5Download free service manual at http://printer1.blogspot.com
