Epson 4003353 - Manual (Page 35)

Stylus Color Service Manual Principles
2.2.2 Carriage Drive Mechanism
The timing belt attached to the base of the carriage unit is driven by the carriage motor, causing the
carriage unit to move along the carnage guide shaft left to right, or vice versa. The carriage drive
motor on this printer is a 4-phase, 200-pole, hybrid-type stepping motor mechanism, allowing the
printer to stop the carriage or change the carriage movement at any position. The position of the
carriage is recognized by the home position sensor, and position information is fed back to the
carriage drive control circuit. This carriage motor is driven by the motor driver IC SLA7041 (see
Section 2.3.2.3 for more information).
Table 2-1. Carriage Drive Motor Specifications
I
Item
I
Description
I
Motor Type 4-phase/ hybrid-type stepping motor
I
Drive Voltage VDC 5?40
Coil Resistance’ 10.0
Drive Frequency 960-4800 PPS
Excitation Mode Constant current Drive, Micro Step Driving
I
In the following table, phase means the 1/8 2-2 phase drive control. ( ) is the value of 2-2
phase.
Table 2-2. Drive Terms
CR Speed Frequency Drive Method Deceleration
Step
Mode 1
■ Area: phase + 1-2
4800(2400) phase
Ace. 10(55)
■ Constant Area: 1-2 phase
12(56)
Mode 2
■ Area: phase + 1-2
2400(1200) phase 40(5)+40(20)
■ Constant Area: 1-2 phase
Mode 3 Area: phase
(40 CPS) ■ Constant Area: phase
16(2)
CR Motor
, . . . .
Figure 2-5. Carriage Drive Mechanism
Rev. A
2-5