Elevator Tray; Elevator Tray Ascent/Descent Mechanism - Develop QC 2235 Plus Service Manual

Mechanical operations
4.4

Elevator tray

• The Elevator Tray moves up or down according to certain conditions.
4.4.1

Elevator tray ascent/descent mechanism

• The Elevator Tray is moved up or down by the Elevator Motor that turns forward or back-
ward.
Condition
Stationary at the upper limit posi-
Standby
tion.
Lowers to the lower limit position
Paper fed into depending on the number of
tray sheets of paper to be fed into the
tray.
Paper removed Moves up to the upper limit posi-
from tray tion.
Overload Moves down and then up after
detected paper has been fed into tray.
Elevator Tray
QC 2235plus Theory of Operation Ver.1.0 Feb. 2004
Elevator Tray
The position at which the Elevator Tray Upper
Limit Sensor PQ (PWB-D FN) detects the Eleva-
tor Tray.
If the Elevator Tray Upper Limit Sensor PQ
(PWB-D FN) is activated while paper is being fed
into the tray, the tray is lowered until the sensor is
deactivated.
If the Elevator Tray Paper Sensor (PC8-FN) is
unblocked when paper is removed from the tray,
the tray is raised until the sensor is blocked.
Lowers the tray for a given period of time, then
raises it to the upper limit position. An overcurrent
is detected in the Elevator Motor during this
period.
Elevator Tray Paper Sensor (PC8-FN)
2-16
Control
Elevator Tray Upper Limit
Sensor PQ (PWB-D FN)
Elevator Motor (M7-FN)