Epson WF-C5790 Service Manual page 69

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a
To prevent the next document from being fed while the previous document is
being reversed inside the ADF, the drive of the Pickup Assy drive gear is shut
off by the Planet Gear and Solenoid so that the Pickup Assy does not move
until the reverse operation is finished.
In addition to that, the Pickup Assy includes a Cam and Clutch inside it to
enable its upward/downward movements and switching of Pickup Roller
rotation according to the rotational direction of the Pickup Assy Drive Gear.
Pickup Roller
Pickup Assy Drive
Gear
Solenoid
Planet Gear
Figure 3-54. Pickup Roller / Separation Roller
Configuration and operating principles
Separation Roller
Cam / Clutch
ADF Motor
Operating principles
The drive path from the ADF Motor to the Pickup Assy Drive Gear is as
follows.
If the Solenoid is energized, then the Plunger pushes up the protruding lever.
The drive from the ADF Motor is conveyed through the Spur Gear 28.9 to the
connected Planet Gear Holder, and the Planet Gear Holder rotates clockwise.
As a result, the drive from the Planet Gear is conveyed to the LD Gear, rotating
the Pickup Assy Drive Gear.
If the Solenoid is no longer energized, then the Plunger will retract, with the
lever returning the Planet Gear Holder to its original location, disconnecting
the Planet Gear drive.
Planger
Solenoid
Lever
Planet Gear Holder
Planet Gear
Spur Gear 28.9
Figure 3-55. Drive Path to the Pickup Assy Drive Gear
Revision A
Pickup Assy Drive
Gear
LD Gear
ADF Motor
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