EPSON Stylus COLOR C70/C80
Revision A
Operating Principles
Overview
39
2.1.3 Carriage Mechanism
The carriage mechanism consists of Carriage motor (CR motor), Carriage unit
(including printhead), CR timing belt, CR guide shaft, CR guide frame etc. In contrast
to previous models, this model has no HP sensor, so that when the carriage unit goes
out of step at right side, it is judged to be at the home position. The carriage mechanism
moves the carriage back and forth according to the drive from the carriage motor. The
following stepping motor is mounted to drive CR mechanism. (See the table below.)
Table 2-1. Carriage Motor Specification
The drive from CR motor is transferred to the CR unit via CR timing belt. And the CR
home position is detected when firmware judges the carriage is going out of step at
right side. Previous products, this printer have the PG adjustment value (1.35mm).
The PG lever selections that can be carried out by the customer are shown in the
following table.
Figure 2-4. Carriage Mechanism (Top view)
CR home position is detected by the feed back signal from the Linear Scale. This is
normally signal (1), but when the HP is out of step, it becomes (2).
Figure 2-5. CR home position
Items
Specifications
Type
DC motor
Drive Voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
22.3
Ω
+/ - 15% (per phase at 25 degree)
Inductance
17.3mH +/ - 25%(1KH 1VmA)
Drive Method
PWM drive (PWM means Pulse Width Moduration.)
Driver IC
A3974 (Same to PF motor)
CR Guide shaft
CR Timing belt
PE Actuator
CR Motor
CR unit
CR Encoder
Linear Scale
1
2
Содержание Stylus Color C70
Страница 1: ...EPSONStylusColorC70 C80 Color Inkjet Printer SEIJ01 004 SERVICE MANUAL ...
Страница 5: ...Revision Status Revision Issued Date Description A July 31 2001 First Release ...
Страница 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 35: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 60: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 96: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 137: ...C H A P T E R 5 ADJUSTMENT ...
Страница 169: ...C H A P T E R 6 MAINTENANCE ...
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