EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Operating Principles Printer Mechanism Components 136
TRANSMISSION OF DRIVE TO ASF UNIT
1. The DE Lock Lever is moved to the right end by moving the Carriage Unit 
to the right end of the Carriage Shaft.
Figure 2-35. Switching Drive Transmission Path (1)
2. The ASF/Pump Motor rotates by the required step number in the 
counterclockwise direction as seen from the Motor Pinion Gear side.
3. By rotation of the ASF/Pump Motor in the counterclockwise direction, the 
Planetary Lever inside the DE mechanism raises in the direction of the 
Combination Gear, 12, 22.4, and the Spur Gear, 15.2, of the Planetary 
Lever engages with the Combination Gear, 12, 22.4.
4. The DE Lock Lever fixes the Planetary Lever in place when the Carriage 
Unit moves the required step number to the left from the Carriage Shaft 
right.
Figure 2-36. Switching Drive Transmission Path (2)
5. When the drive transmission path is switched by Step 1 through Step 4, 
drive power of ASF/Pump Motor is transferred to the ASF Unit by the path 
shown in Figure 2-32.
DE Lock Lever
1
2
Fixing Location