Epson R260 Service Manual - Page 23

Overview, 2.1.1 Printer Mechanism, EPSON Stylus Photo R260/R265/R270, R360/R380/R390, Revision B - stylus photo manual

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EPSON Stylus Photo R260/R265/R270, R360/R380/R390 2.1 Overview This chapter describes the operating principles of the printer mechanism and electric circuit boards of Stylus Photo R260/R265/R270 and R360/R380/R390. 2.1.1 Printer Mechanism The main components of the printer mechanism are shown in the table below. Table 2-1. Printer Mechanism Main Components Component Function CR Unit Moves along the CR shaft to print on paper being powered by the CR motor. The unit includes Printhead, PW sensor, and CR encoder sensor. APG Unit Moves the carriage upward/downward to adjust the platen gap being powered by the PF motor. There are 4 preset levels of platen gap and the unit moves the carriage to one of the levels according to the current carriage position detected by the APG sensor. PF Unit Rotates the PF roller shaft to feed paper being powered by the PF motor. ASF Unit Being powered by the PF motor, feeds paper loaded on the ASF into the printer mechanism. EJ Unit Being powered by the PF motor, ejects paper or the CDR tray. The EJ frame moves upward/downward corresponding to the stacker that can be moved manually so that the frame matches with the paper size. Located on the right side of the printer mechanism. Covers the printhead with the Ink System cap holder when the printhead is not used, and draws waste ink out of the printhead. The waste ink is sent to the Waste Ink Tray through the waste ink tube. The main control boards are shown in the table below. Table 2-2. Main Control Boards Board Main Board Power Supply Board (P/S ASSY) Panel Board Function Located on top of the printer mechanism and controls all over the printer operations. Located on the Lower Housing and generates required voltages for the printer using the power supplied from the AC power line. Located inside the Panel Unit and controls the operation panel including the LCD. (R360/R380/R390 are equipped with a LCD.) Revision B Table 2-2. Main Control Boards Board Function Card Board Located on the Middle Housing. Incorporates memory card slots, (R360/R380/R390 only) USB HOST interface, and an infrared communication circuit. USB Board (R260/R265/R270 only) Located on the Middle Housing. Incorporates a USB HOST interface. PF Encoder Sensor APG Sensor CDR Guide Sensor CDR Tray Sensor PW Sensor PF Motor PF Roller Shaft Printhead CR Unit EJ Frame EJ Roller Shaft CR Shaft CR Lock Lever Cap ASSY Ink System APG Unit Figure 2-1. Printer Mechanism Diagram CR Encoder Sensor LD Roller PE Sensor ASF Unit CR Motor Operating Principles Overview 24

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EPSON Stylus Photo R260/R265/R270, R360/R380/R390
Revision B
Operating Principles
Overview
24
2.1
Overview
This chapter describes the operating principles of the printer mechanism and electric
circuit boards of Stylus Photo R260/R265/R270 and R360/R380/R390.
2.1.1
Printer Mechanism
The main components of the printer mechanism are shown in the table below.
The main control boards are shown in the table below.
Figure 2-1.
Printer Mechanism Diagram
Table 2-1.
Printer Mechanism Main Components
Component
Function
CR Unit
Moves along the CR shaft to print on paper being powered by the CR motor.
The unit includes Printhead, PW sensor, and CR encoder sensor.
APG Unit
Moves the carriage upward/downward to adjust the platen gap being powered by
the PF motor. There are 4 preset levels of platen gap and the unit moves the
carriage to one of the levels according to the current carriage position detected by
the APG sensor.
PF Unit
Rotates the PF roller shaft to feed paper being powered by the PF motor.
ASF Unit
Being powered by the PF motor, feeds paper loaded on the ASF into the printer
mechanism.
EJ Unit
Being powered by the PF motor, ejects paper or the CDR tray.
The EJ frame moves upward/downward corresponding to the stacker that can be
moved manually so that the frame matches with the paper size.
Ink System
Located on the right side of the printer mechanism. Covers the printhead with the
cap holder when the printhead is not used, and draws waste ink out of the
printhead. The waste ink is sent to the Waste Ink Tray through the waste ink tube.
Table 2-2.
Main Control Boards
Board
Function
Main Board
Located on top of the printer mechanism and controls all over the
printer operations.
Power Supply Board
(P/S ASSY)
Located on the Lower Housing and generates required voltages for the
printer using the power supplied from the AC power line.
Panel Board
Located inside the Panel Unit and controls the operation panel
including the LCD. (R360/R380/R390 are equipped with a LCD.)
Card Board
(R360/R380/R390 only)
Located on the Middle Housing. Incorporates memory card slots,
USB HOST interface, and an infrared communication circuit.
USB Board
(R260/R265/R270 only)
Located on the Middle Housing. Incorporates a USB HOST interface.
Table 2-2.
Main Control Boards
Board
Function
ASF Unit
CR Motor
APG Unit
Ink System
CR Lock Lever
EJ Roller Shaft
PF Motor
PW Sensor
LD Roller
APG Sensor
CR Encoder
Sensor
PE Sensor
Cap ASSY
CR Shaft
PF Roller Shaft
CDR Guide
Sensor
CDR Tray
Sensor
Printhead
CR Unit
EJ Frame
PF Encoder Sensor