Epson Stylus Color - Epson STYLUS COLOR 480 Service Manual

EPSON Stylus COLOR 480

Following figures show you the ASF paper loading sequence and the operation of the
each mechanism.
When the paper is advanced with
the PF roller, Change lever push
down the Clutch lever as right
figure and the Clutch lock tooth is
disengaged from the Clutch gear.
As the result, the drive from the PF
motor is interrupted and the LD
roller dose not rotate.
This position is the ASF home
position.
The Paper return plate is set to
avoid that the paper is slipped
down from the paper set position.
The PF motor pinion gear rotates
CW direction and the drive from the
PF motor is transmitted to the ASF
LD roller shaft through the Clutch
lock tooth and the Clutch gear.
The ASF hopper release lever rotates
with the ASF LD roller and release
the ASF Hopper. The ASF hopper is
pushed with the Compression spring
2.67 and the paper is picked up with
the ASF LD roller.
Operating Principles
Step 1
LD roller
LD roller shaft
Paper return plate
Clutch gear
Change lever
Clutch lever
PF motor pinion
Step 3
gear CW rotation
ASF Hopper
release lever
LD roller shaft
PF motor pinion
ASF hopper
gear CW rotation
release lever
Figure 2-12. ASF Paper Loading Sequence
Hopper
Printer front side
Clutch lock tooth
Clutch
PF motor pinion
gear CCW rotation
Compression
spring 2.67
ASF Frame
PF motor pinion
gear CW rotation
Overview
Step 2
When the paper is loaded (pick up) from
the ASF unit, the Change lever moves to
the printer front side with the CCW
rotation of the PF motor pinion gear and
Tension spring 0.143
releases the Clutch lever. As the result,
the Clutch turns back to the engagement
position by the tension force of the
Tension spring 0.143.
And the Clutch lock tooth is engaged
with the Clutch gear as right figure.
Step 4
The ASF LD roller rotates CW direction
moreover and the Paper return plate is
stored under the ASF frame.
The paper is advanced up to the PF roller.
and the ASF LD roller & the clutch rotate
to the "Step1" position. The Clutch lever
is locked with the Change lever.
The drive from the PF motor is
Paper return plate
interrupted and the drive is transmitted to
the PF roller side.
Revision B
39