Pump Mechanism - Epson Stylus COLOR 1520 Service Manual

2.2.6.1 Pump Mechanism

1. Switching operation from the paper feed mechanism to the pump mechanism
The PF motor also functions as the pump motor by the switching operation of the PF motor drive
disengage mechanism. When the CR unit returns to the home position, the switch lever in the CR
unit pushes the cam lever. Then the disengage gear switches the torque from the ASF to the pump
mechanism via the gear train. Figure 2-11 illustrates how the torque is transmitted from the paper
feed mechanism to the pump mechanism.
The direction in which the CR moves.
Rev. A
PF Motor Drive Disengage Mechanism
Release Lever
ASF Transmission Gear set Lever
Switch Lever (CR)
Figure 2-10. Release Cam Reset
CR Unit
Switch Lever
Release Cam
Figure 2-11. Paper Feed Mechanism Function
Switch Lever
(CR)
Release Cam Set Lever
PF Motor Drive Disengage Mechanism
Release Cam
Disengage Gear
Torsion Spring
PF Motor Pinion Gear
PF Motor
Disengage Gear
Pump Mechanism
Operating Principles
2-11