Epson Stylus Color 670

EPSON Stylus COLOR 670 Revision A
Operating Principles Overview 31
2.1 Overview
This section describes the operating principles of the printer mechanism and
electrical circuit boards. The EPSON Stylus COLOR 670 has the following
boards:
o Main board: C301MAIN
o Power supply board: C301PSB/PSE
o Panel board: C209PNL Board
2.1.1 Printer Mechanism
EPSON Stylus COLOR 670 is based on Stylus COLOR 660 and the basic
specifications for its mechanism are almost same as Stylus COLOR 660.
This printer consists of Print Head, Carriage Mechanism, Paper Feeding
Mechanism, Paper Loading Mechanism, Ink System (Pump Mechanism, Cap
Mechanism, and Carriage Lock Mechanism).
Like other EPSON ink jet printers, the EPSON Stylus COLOR 670 is equipped
with two stepping motors; one for ASF/ paper feeding/ pump mechanism, and
one for CR mechanism. ASF unit uses rear entry front eject system; this
design is the same as Stylus COLOR 660.
For cap assembly, EPSON Stylus COLOR 670 uses valveless mechanism; new
design for this model.
Figure 2-1 on page 32 shows the outline of the printer mechanism.
The table below shows the compatibility of the mechanical units among ,
Stylus COLOR 660 and EPSON Stylus COLOR 670.
Table 2-1. Printer Mechanism Comparison
Item Stylus COLOR 660 Stylus COLOR 670
Printhead E-CHIPS E-CHIPS +
CR motor
(coil resistance)
7.8Ω 7.8Ω
PF moto
(coil resistance)
7Ω 7Ω
ASF unit Quiet noise type Quiet noise type
Paper feeding mechanism
Bottom edge: 14m
enabled
Bottom edge:
3mm enabled
Pump unit
Capping unit Valve type Valve less type
Frame parts SC640 Type SC 640 type
Main board C256MAIN-B C301MAIN
PSB/PSE board C206PSB\PSE C301PSB/PSE