Canon LBP-2000, Service Manual

Page: 108 / 222

2 - 69
CHAPTER 2
Basic Sequence of Operation
•
3 paper feeders, pickup from bottommost; A4
PF3 pickup clutch
PF3 pickup motor
PF3 cassette
paper sensor
PF2 pickup motor
STBY
INTR
PRINT
(unit: sec)
0.59 (approx.)
PF2 cassette
paper sensor
PF1 pickup motor
PF1 cassette
paper sensor
Registration paper
sensor (PI101)
/PRNT signal IN
0.61 (approx.)
0.54 (approx.)
0.92 (approx.)
0.54 (approx.)
0.92 (approx.)
0.92 (approx.)
Figure 2-7-4
• 3 paper feeder, pickup from bottommost; A3
PF3 pickup clutch
PF3 pickup motor
PF3 cassette
paper sensor
PF2 pickup motor
STBY
INTR
PRINT
(unit: sec)
PF2 cassette
paper sensor
PF1 pickup motor
PF1 cassette
paper sensor
Registration paper
sensor (PI101)
/PRNT single IN
0.59 (approx.)
0.61 (approx.)
0.92 (approx.)
0.54 (approx.)
0.54 (approx.)
0.91 (approx.)
0.92 (approx.)
1.1 (approx.)
1.2
Figure 2-7-5
N o t e : If three paper feeders are used and, in addition, the bottommost is used for large-side
paper, the leading edge of paper will not be able to leave the PF3 feeding roller after
registration, possibly resulting in a registration stationary jam. To prevent this, the PF3
pickup motor is driven for 1.2 sec while moving the paper after registration to rotate the
PF3 feeding roller.