Epson SQ-B50/2550 Technical Manual page 210

REV.-A
Step 1 Tighten the screw CB (M2.5 X 4) clamping the TE sensor to the paper guide temporarily.
Step 2 Confirm that the roller moves up and down by holding the right edge of the TE sensor and
moving it forward and backward.
Step 3 Set position alignment tool #693 so that the TE roller shaft and the surface of the platen line
up. (When viewed from the position shown in Figure 4-62, the roller shaft must not be visible
because it should be covered by the position alignment tooL)
Step 4 Adjust the TE sensor roller position by moving the TE sensor set forward or backward so that
the dimension of the projected portion above the platen surface becomes the same as that of
the cutout on the position alignment tool. (First set the TE roller to the lowest position, then
adjust the roller position upward step by step until the roller is stopped by the position alignment
tooL)
Step 5 Tighten the TE sensor set screw and glue it (Refer to section 6). At this time, pay attention to
the orientation of the TE sensor, so that the sensor lever is located at the center of the photo
interrupter.
CB (M2.5
x
4)
TE Sensor set
TE sensor roller
Figure 4-61. Top Edge Sensor
#E693
Figure 4-62. TE Sensor Roller Adjustment
4-48