Canon LBP1760P, Service Manual

Page: 82 / 394

D. Multi-purpose Tray Pick-up
The presence of paper on the multi-purpose tray is detected by the multi-purpose tray paper
sensor (PS105).
When the engine controller receives the /PRNT signal from the video controller, the printer
starts the initial rotation. When the initial rotation ends (main motor warm-up, scanner motor
warm-up, high-voltage control sequence, and fixing unit warm-up are completed), the multi-
purpose tray pick-up solenoid (SL102) is turned ON.
As a result, the cam rotates, the lifter that paper is loaded is lifted, and the paper comes in
contact with the multi-purpose tray pick-up roller. At the same time, the multi-purpose tray
pick-up roller makes one rotation and a sheet of paper on the multi-purpose tray is picked up.
The separation pad removes the unnecessary sheets, and the picked up paper is fed to the top
of page sensor (PS103) when SL102 is turned back ON again.
The paper then reaches the registration arm where its skew is corrected, goes through trans-
fer, separation, fixing, and delivery unit, and is delivered to the tray.
• Multi-purpose tray pick-up timing
Figure 2-5-5
2 - 44
CHAPTER 2
/PRNT signal
Main motor (M1)
Scanner motor
Pick-up solenoid (SL102)
Pick-up roller
Pre-feed sensor (PS102)
Top of page sensor (PS103)
STBY INTR PRINT
About 0.75
About 0.7
About 0.15
About 1.5
(Unit : Second)