Main Components; Printer Mechanism - Epson Stylus Color 640 Service Manual

EPSON Stylus Color 440/640/740

1.8 Main Components

Stylus Color 440, 640, 740 have following major units. Also, it is one of
the major characteristics that the bottom of the Printer mechanism
serves as the Lower case at the same time. Each unit from 2) to 5) are
simply explained below:
1) Upper Case

2) Printer Mechanism

3) Main Control Board
Stylus Color 440:C206 Main-B Board, C255 Main Board
Stylus Color 640:C256 Main Board
Stylus Color 740:C257 Main Board
4) Power Supply Board
Stylus Color 440:C206 PSB/PSE Board
Stylus Color 640:C206 PSB/PSE Board
Stylus Color 740:C257 PSB/PSE Board
5) Control Panel Board
Stylus Color 440:C206 PNL Board
Stylus Color 640:C206 PNL Board
Stylus Color 740:C209 PNL Board
Chapter 1 Product Description
1.8.1 Printer Mechanism
Like the previous printer mechanism such as for Stylus Color 400, 600,
and Stylus Photo, one of the major characteristics of Stylus Color 440,
640, 740 is that the printers have no Engage/Disengage mechanism to
change between the pump mechanism and paper feeding mechanism.
In stead, this change-over control is done by the distinction between
turning direction of PF/Pump motor and position of present carriage
unit. Also, another major characteristic is that printhead is on unit
combining black and color.
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