Epson Stylus CX1500 ME100 Service Manual page 37

EPSON Stylus CX1500/ME100
When the PF Motor
pinion gear rotates CW
direction (Right side
LD Roller Shaft
view), the Change Lever
pushes down the Clutch
Lever as right figure and
Paper Return Plate
the Clutch lock tooth is
disengaged from the
Torsion Spring 29.1
Clutch Gear. As the result,
ASF Frame
the LD Roller Shaft dose
not rotate at all because
the drive of the PF Motor
is not transmitted. In this
time, the ASF Hopper is
Spur Gear 10.8
also pushed down by the
(PF Roller)
ASF hopper release lever
on the LD Roller Shaft,
and the Paper Return Plate
is set to avoid that papers
are slipped down from the
paper set position.
This position is the ASF
home position.
<PF motor drive transmission path for ASF home position setting>
PF Motor pinion gear (CW) → Spur Gear 10.8 (PF Roller) (CCW) →
Combination Gear 18.28 (CW) → Spur Gear 27.2 (CCW) →
Spur Gear 25.6 (CW) → Change Lever (CW) →
Combination Gear 16.32 (CCW) → Spur Gear 35.2 (CW)
* Above transmission pass = seen from the right side of the printer
OPERATING PRINCIPLES
Step 1 (ASF Home Position)
Hopper & Paper Return Plate Condition
LD Roller ASF Hopper
Release Lever
Hopper
Compression
Spring 2.50
Gear Rotation Direction (Right side view)
Change Clutch Clutch
Lever Lever
Clutch lock tooth
Figure 2-8. ASF Paper Loading Sequence (Step 1, 2)
Hopper & Paper Return Plate Condition
Gear Rotation Direction (Right side view)
Clutch
Gear
<PF Motor driver transmission path for Clutch Lever release>
PF Motor pinion gear (CCW) → Spur Gear 10.8 (PF Roller) (CW) →
Combination Gear 18.28 (CCW) →Spur Gear 27.2 (CW) →
Spur Gear 25.6 (CCW) → Change Lever (CCW) →
Combination Gear 16.32 (CW) → Spur Gear 35.2 (CCW)
* Above transmission pass = seen from the right side of the print
Overview
Step 2
When a paper is loaded
from the ASF Unit, the
Change Lever moves to
the front side of the
printer with the CCW
rotation (right side view)
of the PF Motor pinion
gear and releases the
Clutch Lever. As the
result, the Clutch turns
back to the engagement
position by the tension
force of the Extension
spring 0.143.
To Front side Extension spring
And, the Clutch Gear is
0.143
engaged with the Clutch
lock tooth to transmit the
drive of the PF Motor as
left figure. In this time,
the Change Lever is
locked instantaneously by
the protrusion on the
backside of the Carriage
Unit to change over from
the ASF home position
detection function to the
paper loading function
surely.
Revision A
37