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5. Adjust the sensor to read the mark (method two). This is recommended for
206
Operating the InfoPrint 4100
a. Measure the width of the mark (2) that the lower mark sensor will be
reading. In step (e) this measurement will be used to center the sensor light
on the mark.
b. Open the upper mark sensor assembly (7) by raising the upper mark sensor
assembly lever (8).
c. Place the printed mark above the lower sensor by using Forms Feed buttons
(3) and the mark sensor positioning knob (6). Position the lower mark
sensor light near the center of the mark.
d. Turn the mark sensor positioning knob (6) to the right until the brightness
reading begins to increase (about five points). The lower mark sensor light
is now at the edge of the mark.
e. Turn the mark sensor positioning knob (6) to the left until it is half the
measurement taken in step (a) from the edge of the mark One full turn of
the mark sensor positioning knob (6) moves the sensor 10mm (0.4 inch). For
example if the mark is 10mm wide then you would turn the mark sensor
positioning knob (6) a half of a rotation to place the sensor light in the
center of the mark. The brightness reading should now be at its lowest
point.
f. Close the upper mark sensor assembly (7).
g. Press and hold the orange UP button until the displayed numbers blink
twice then release the UP button. The display will alternate between a
brightness (1) / mark threshold (2) reading similar to this
and this display
h. Perform step 6 and then perform step 5.
thick papers where the Look Up sensor light is not visible from above.
.
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