Epson Stylus color 600, Service Manual, Page: 45 / 154

Chapter2 Operating Principles
Rev. A
2-7
2.1.1.2 Carriage Mechanism
Carriage mechanism is to drive the carriage with print head mounted from left to right or vice versa.
The carriage drive motor in this printer is a 4-phase, 200-pole, stepping motor and is driven by
1-2phase, 2-2phase and W1-2phase drive method. This stepping motor allows the carriage to
move freely to the particular positions which is necessary for various operation, such as paper feeding,
ink absorbing, flashing, ink exchange and cleaning operations. The tables below shows carriage motor
specifications and motor controls at each mode.
Table 2-2. Carriage Motor Specification
Item Description
Motor type 4-phase/200-pole Stepping motor
Drive voltage Range 42VDC ±5%
Internal coil resistance 7.8 ohms ±10%
(per phase under 25°
C
environment)
Driving speed(frequency) range[cps (pps)] 5(60) - 340(4080)
Control method Bi-pola Drive
Table 2-3. Motor Control at Each Mode
Mode Driving speed
[CSP]
Drive frequency
[PPS]
Drive method
High speed skip 340 4080 W1-2, 2-2,1-2phase drive*
Printing(Normal) 200 2400 W1-2phase drive
Printing(SLQ) 100 1200 W1-2phase drive
Capping 80 960 W1-2phase drive
Wiping 40 480 W1-2phase drive
Cap(valve release) 20 240 W1-2phase drive
Withdrawal of cap 5 60 W1-2phase drive
*Note 1): The reason why plural drive methods exist is that following some sequences described below
exist in the each mode and stable carriage operation and printing are performed individually
by different drive methods. This drive method is especially necessary for high speed skip.
•
Acceleration 1 mode
•¨ •
Acceleration 2 mode
•¨ •
Deceleration 1 mode
•¨ •
Deceleration 2 mode
Rotor
A
/A
/B
B
C200 MAIN Board
Connecter CN6(CN7)
Figure 2-7.CR(PF/Pump) Motor Internal Block Diagram