Epson Stylus COLOR 880 Service Manual page 54

EPSON Stylus COLOR 880
CR unit encoder sensor
CR unit encoder sensor includes the linear encoder in the CR unit and the
scale plate attached along the CR scanning direction. The minimum
resolution of the sensor is 1/180 inch, (minimum 1/720 inches with all
edges of Phase A and Phase B) and outputs HIGH signals for the black
bands of the scale and LOW signals for the transparent parts to the ASIC.
The printer controls the CR motor based on the signals output from this
sensor. The sensor also detects the CR home position.
Operating Principles Electrical Circuit Operating Principles
Revision A
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