Epson RX580 - Stylus Photo Color Inkjet, Service Manual

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EPSON Stylus PHOTO RX560/580/590 Revision A
Operating Principles Overview 16
2.1 Overview
This Chapter describes the operating principles of the mechanism and electric circuits
of Stylus PHOTO RX560/580/590.
2.1.1 Mechanical Components
The printer of Stylus PHOTO RX560/580/590 consists of the following major
mechanisms:
The units and circuit boards constituting Stylus PHOTO RX560/580/590 are as
follows:
Figure 2-1. Schematic Printer Mechanism
Table 2-1. Mechanical Components 1
Mechanism Function/Description
CR Assy
Moves on the CR Guide Shaft right and left and performs printing on paper.
The Carriage Assy incorporates the Printhead, PW Sensor, and CR Encoder.
The drive source is the CR Motor.
APG Assy
Controls the platen gap in four stages.
Detects the current height of the carriage with the APG Sensor, and moves
the carriage up and down, driven by the PF Motor.
PF Assy Driven by the PF Motor to turn the PF Roller Shaft for feeding paper.
ASF Assy Driven by the PF Motor to load paper into the Printer Mechanism.
Eject Assy
Driven by the PF Motor to eject the paper (CD-R Tray).
As the Stacker is moved up and down (by manual operation), the paper eject
frame moves up and down so that its height can be adjusted to the media.
I/S Assy
Located in the right end of the mechanism, performs capping the Printhead,
while it is not used, and sucking waste ink. The waste ink is sent to the Waste
Ink Tray via the Waste Ink Tube.
Table 2-2. Mechanical Components 2
Unit /Circuit Board Function/Description
Main Board
Located on the Middle Housing, incorporating the USB I/F (x2), card
reader, and infrared communication function.
Power Supply Board
Located on the Lower Housing. The power cable can be plugged in and
unplugged.
Panel Board Consists of two pieces located on the Middle Housing.
Scanner Unit CIS consisting of 1200 dpi CCD for reflection (light source: LED)
ASF Assy
CR Motor
APG Assy
I/S Assy
CR Lock Lever
Eject Roller Shaft
Printhead
PF Motor
CR Assy
PW Sensor
PF Encoder
LD Roller
APG Sensor
Eject Frame
CD-R Guide
Sensor
CR Encoder
PE Sensor
Cap Assy
CR Guide
Shaft
PF Roller Shaft
CD-R Tray
Sensor