Canon LBP5000 Series, Service Manual

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Chapter 2
2-22
F-2-26
The presence of paper in the manual feeder slot is checked by the manual feeder paper sensor (SR3), and paper in the cassette is checked by the cassette paper sensor
(SR2).
The machine's various feed rollers are controlled by the DC controller PCB through control of 3 motors (main motor M1, fixing/delivery motor M2, pickup motor
M3) and 3 solenoids (SL1, SL2, SL3).
The paper path is equipped with 3 photointerrupters (SR1, SR4, SR5) to find out whether paper has reached or moved past a specific point of the path.
In addition to these sensors, 2 photointerrupters are used to check the locking/unlocking of the fixing assembly (SR9) and the width of print paper (SR8).
The following is a diagram showing the various motors, solenoids, and sensors: