Epson EPL-N4000 - Lift up Motor 1 and Lift up Motor 2; Motor Control

EPSON EPL-N4000/EPL-N4000+ Chapter 2 Operating Principles
Rev.B 55
2.1.2.3 Lift Up Motor 1 and Lift Up Motor 2
When a Paper Tray is installed in the printer, the MCU PWB switches
on the Lift Up Motor. Each tray has a square metal shaft runnin
g
alon
g
one side of the tray. Attached to the shaft is an L shaped metal ton
g
ue.
1. When the tray is inserted into the paper feeder, a pin at the end of
the shaft en
g
a
g
es the Lift Up Motor
g
ear.
2. When the MCU detects that the tray is inserted, MCU PWB switches
on the Lift Up Motor.
3. Then, the motor rotates the square shaft and the square shaft shifts
the attached metal ton
g
ue, which in turn raises the tray Bottom
Plate which raises the paper stack.
4. As the paper stack raises, it pushes up on the No Paper Actuator,
which in turn switches the No Paper Sensor.
Figure 2-3. Lift Up Mechanism Motor Control
2.1.2.4 Motor Control
The MCU PWB provides power for and controls the operation of the
Main Motor, the Lift Up Motors, and the Offset Motor. All motors are
+24VDC motors. The Main Motor is a stepper motor. The MCU si
g
nals
step the Main Motor throu
g
h a 360° rotation. The MCU PWB provides
both forward and reverse control of the Offset Motor.
Figure 2-4. Motor Control
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