Epson Stylus Pro 9500 Service Manual page 211

EPSON Stylus Pro 9500
PF ENCODER SENSOR INSTALLATION POSITION ADJUSTMENT
This adjustment is performed to set the distance between the PF roller shaft
(grid roller) and PF encoder sensor in the proper position. Through this
adjustment, the position of the PF encoder sensor's emitter and receptor are
set properly with respect to the slits in the loop scale for the PF motor.
1. Loosen the 2 PF encoder sensor installation screws, then set the tool,
#F764 on the round hole side of the PF roller shaft, fitting the notched end
against the PF encoder sensor's emitter (outside).
2. Move the PF encoder sensor up and down so that it is in a position where
the clearance between the outside part of the PF encoder sensor and the
notch in the tool, #F764 becomes uniform, then tighten the 2 PF encoder
sensor installation screws.
Check the clearance at
PF Encoder Sensor
Installation Screws
Figure 5-21. PF Encoder Sensor Installation Position Adjustment
Adjustment
this part.
Exclusive tool #F764
PF ENCODER SENSOR INSTALLATION POSITION ADJUSTMENT 2
This adjustment shifts and adjusts the PF encoder sensor on each installation
frame so that the loop scale on the PF roller shaft is positioned virtually in the
center between the PF encoder sensor's receptor and emitter. Through this
adjustment, it becomes possible to read the slits on the loop scale more
accurately.
1. Loosen the 2 PF encoder assembly installation frame installation screws,
then set the tool #F765 in the PF encoder sensor's emitter side (outside)
position.
PF Encoder Assembly
Installation
Figure 5-22. PF Encoder Sensor Installation Position Adjustment 2
2. Turn the PF roller one time by hand (use the reduction belt), then check if
loop scale is touching the front end of the tool, #F765. If it is found to be
touching, shift the PF encoder sensor installation frame gradually toward
the printer's outside to a position where the loop scale does not touch it in
even a full rotation, then tighten the 2 installation screws.
Adjustment Steps
Revision A
Exclusive tool #F765
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