Epson Stylus Color 1520 Service Manual

Operating Principles
Rev. A
2-
7
2.2.4.1 ASF (Auto Sheet Feeder) Mechanism
Torque from the PF roller is transmitted to the pick up roller in the ASF mechanism via the planetary
gear by the PF motor drive disengage mechanism which switches the torque based on the detected
position of the CR unit. The pick up roller shaft has 2 arms on the right and left ends. The arms push
down the paper support to make the paper surface contact with the pick up roller. The one way clutch
rotates the puck up roller in the specified direction to load paper. The paper loaded is then fed by the
paper feed mechanism and the gear transmission from the planetary gear is disengaged.
ASF Mechanism
Pickup Rollers
Paper
One Way Clutch
Disengage Gear
Pinion Gear
PF Motor
ASF transmission Gear
Paper Support
PF Roller
Front PE Sensor
Arm
Figure 2-6. ASF Mechanism

Epson Stylus Color 1520 Specifications

General

Color	Yes
Maximum resolution	600 x 1200 DPI
Print speed (black, normal quality, A4/US Letter)	- ppm
Maximum input capacity	100 sheets
Envelopes sizes	10, C5, DL
Standard media sizes	4\
Paper tray media types	Envelopes, Labels, Plain paper
Non-ISO print media sizes	Legal
ISO A-series sizes (A0...A9)	A4
ISO B-series sizes (B0...B9)	B5
Power requirements	120V AC, 50/60 Hz
Printing noise level	45 dB
Maximum operating temperature range (T-T)	-20 - 60 °C
Market positioning	Home & office