Epson Stylus Pro 5000, Service Manual, Page: 42 / 780

Stylus Pro5000 Chapter2 Operating Principles
Rev. A
2-3
2.1.1.2 Carriage Mechanism
The carriage unit of Stylus Pro5000 performs on/off of D/E lever not only to
control motive power transmission to the pump mechanism(at “0” digit
side), but also to change the platen gap(at “137” digit side).
D/E Mechanism
for PG change
Head for
Light Colors
Head for
Dark Colors
Figure 2-2. Carriage Mechanism
[Carriage Unit]
3 sensors are mounted on the carriage unit and each sensor detects the
following printer conditions.
Table 2-4. Sensors on the carriage and their function
No. Name of Sensor Function
1 Carriage Home Position Sensor Detects paper jam and
acknowledges the standard
position when the carriage is
driven.
2 Encorder Pulse Sensor PTS compensation signal to
PZT driving trapezoidal
waveform.
3 Paper width sensor Detects the paper width
every time the paper is
loaded. (Prevention of
printing on the platen)