Paper Loading Operation - Epson Stylus PHOTO 890 Service Manual
Color ink jet printer
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Also See for Stylus PHOTO 890:
- Basic manual (118 pages) ,
- Product information (13 pages) ,
- Specifications (2 pages)
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EPSON Stylus Photo 890/1280/1290
2.1.4.2 Paper Loading Operation
Multiple paper loading prevention mechanism is included in the ASF unit to ensure
steady paper loading. To prevent any paper from falling from the paper set position
into the paper path, the paper return lever pushes paper that may have fallen off back
onto the hopper. After this motion is completed, the LD roller starts loading paper. The
paper loading mechanism, including the multiple paper loading prevention mechanism,
is described in the following steps.
1) When the printer power is turned on, the ASF/Pump motor rotates
counterclockwise to detect ASF home position. Then it rotates clockwise specified
steps to set the LD roller and paper return lever in their standby status. (See
"Standby State" in Figure 2-1.)
2) When the paper loading signal is sent from the PC and the Load/Eject button is
pressed, the ASF/Pump motor turns counterclockwise to let the LD roller start
loading paper. (See "Paper Pick Up State" in Figure 2-1.)
3) When the paper is transported to the PF roller, the LD roller stops where it loses
friction. (See "PF Roller Paper Feed State" in Figure 2-1.)
4) When the next print signal is sent and Load/Eject button is pressed*, the ASF/
Pump motor rotates clockwise specified steps to set the LD roller and the paper
return lever in standby status. (See "Standby State" in Figure 2-1.)
* If the printer does not receive any print signal for TBD seconds in step 4, the LD
roller and the paper return lever automatically return to the standby state.
OPERATING PRINCIPLES
Hopper
Hopper Spring
LD Roller
Cam
Pad Spring
Paper Return
Pad
Lever
Standby State
Flowchart 2-1. Multiple Paper Loading Prevention Mechanism
Overview
2
3
PF Roller Paper
Paper Load State
Feeding State
Revision C
Pinch Roller
41
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