16. Paper feed section
Theory of Operation Ver. 8.0 Jun. 2008
11
2
Composition/Operation
(3) During a print cycle
• When the amount of paper decreases as the machine continues printing, a tray will grad-
ually go down making the upper limit sensor of tray3 unblocked or that of the tray4
blocked. The lift-up motor starts rotating again and lifting up the tray.
• When the upper limit sensor of tray3 is unblocked or that of tray4 is blocked, the lift- up
motor stops and finishes lifting up the tray.
• The sequence of these operations is repeated to keep constant the pressure between
the pick-up roller and paper stack (paper take-up pressure) regardless of the amount of
paper still available for use.
A00JT2C296AA
Tray3 upper limit sensor (PS22)
Tray4 upper limit sensor (PS27)
Theory of Operation Y107522-3
