Gear Train Change With Hopper Installed - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000

2.1.1.9 Gear Train Change with Hopper installed

Gear train of Stylus Pro5000 is controlled so that it is not until the user
install the paper tray that the motive power becomes available for the lifter
gear train. However, if the user removes the paper tray while the printer is
performing the paper loading, the lifter which has been lifted up, returns to
the reset position. Also, if the paper tray is not installed, C228 main control
board prevents the lifter from being lifted up by the feedback signal from
the logical line in order to avoid accidents. Figure2-14 shows all parts
which changes their conditions, when the hopper is installed.
Sun Gear
Protrusion Part
1
Slider Plate:
Moves to the right side
when the paper tray is installed.
Figure 2-14. Gear Train Transmission(1)
Rev. A
Small Cam Gear
rotates left.
Gear part also moves
to right side.
[Explaining the operation]
Flag, which collides with paper tray, is sticking out in the mechanism
frame.
By installing the paper tray to the printer body, this flag moves to rear side
(to right direction in the figure2-14). Along with this, the slider plate moves
to right side. (See in the figure2-14) On this plate, the small cam gear
always engages with the notched part, which looks like the gear teeth.
(See in the figure2-14). This cam gear is located under the sun gear,
and is usually located behind planetary gear 2(Refer to figure2-13).
Therefore, when the slider plate moves to the right side, cam gear rotates
left . As a result, the protrusion side of the cam gear faces upward.
Chapter2 Operating Principles
2-14