Carriage Movement Mechanism - Epson LX-300 Service Manual

Operating Principles

2.1.2 Carriage Movement Mechanism

movement mechanism consists
belt, driven pulley, HP sensor, etc. The CR motor assembly drives tie tifig belt. me carriage
assembly is
shows the carriage movement mechanism.
determining the carriage home position. The HP sensor informs the CPU of the carnage home
carriage actives the sensor to indicate the carriage home position, which toggles the sensor to OFF.
Table 2-1. CR Motor Assembly Specifications
Category
Type
Drive Voltage
Coil Resistance
Drive Pulse Frequency
Excitation Method
Figure 2-2. Carriage Movement Mechanism
2-2
of the carriage assembly, CR motor assembly, timing
Requirement
4-phase, 48-pole, PM-type stepping motor
31.5 -38.5 VDC
180 ohms * (per phase, at 25° C, 77° F)
1320 p~
Normal Mode Draft
1980
Color Mode Draft
Constant-voltage 2-2 phase excitation
1-2 phase excitation
CARRIAGE ASSY.,
TIMING BELT