Replacing The Front And Rear Paper Size Sensor - GRAPHTEC CUTTING PRO FC3100-60 Service Manual

4.2.15 Replacing the Front and Rear Paper Size Sensors
(1) Remove the front and rear guides (see Subsection 4.1.2).
(2) As shown in Fig.4-80, disconnect one connector each from the front and rear paper size sensors.
(3) Remove each paper size sensor.
• One M3 x L10 bind screw each
(4) To mount the sensors, reverse the above procedure.
(5) After mounting the sensors, check the operation as follows.
(a) Run the sensor test to check proper switching between the HIGH and LOW states (see Section
5.14 "Testing the Sensor").
(b) After reassembling the plotter, load a single sheet of paper, and then select the SHEET paper
mode (F3 key) to detect the paper size.
(6) If the sensors malfunction during the preceding Step (5)(b), the sensors are possibly incorrectly
positioned with respect to their corresponding holes in the front and rear guides. It also possible that
the rear paper size sensor is too sensitive, causing it to misread the paper position.
Remedy
(a) Manually bend the sensor bracket to correct the position of the sensor relative to its corresponding
guide hole.
(b) As shown in Fig.4-81, cover half of the photoreceptor with black tape (if black tape is not already
attached).
(7) As shown in Fig.82, remove the M3 x L6 bind-head screw to remove the sensor bracket.
* Use a small screwdriver at the rear of the plotter.
Fig. 4-80
Fig, 4-81
Fig. 4-82
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FC3100-60 Service Manual
P/N53802-031T Rev. A