FSG/MTM/001 060511
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3.16 Adjustment of Original Sensors
The Original Sensors are located under the End Cover at the Operator Panel end of the
scanner.
3.16.1 Adjustment of Switch Point
See Fig. 3-29, page 77.
To adjust the Original Sensors:
• Remove the Guard Plate over the Optical Interrupter Board
• Loosen the screws that hold the bracket with the Optical Interrupter Board
Adjust the switch point by shifting the OIB-Board up/down until the peak of the curved
Original Sensor Actuator is:
3.9 mm +/- 0.5 mm above the top of the Feed Rollers
Note that the Shutter must rest on top of the one leg of the Optical Interrupter.
All Original Sensor Actuators must be within the above tolerance.
Check:
• That the Original Sensor Shutter moves freely in the gap of the opto-interrupter, when the
Sensor Actuator is activated.
• That the Entry Original Sensor Shutter does not touch the press nut for the Glass Plate
bearing, when the Sensor Actuator is activated.
• That the Torsion Springs are correctly mounted.
3.16.2 Functional Test
SCANtest 6: Test 4, Original Sensor Test
3.16.3 Hints
The Exit Sensor determines the Start of Scan position of the original. The original is first
moved forward to activate the Exit Sensor and after that moved a pre-defined distance
backwards to the Start of Scan position.
End of Scan is determined by a pre-defined distance form the position where the original
releases the Entry Sensor.
The points of Start of Scan and End of Scan may be offset from WIDEimage (Scanner Setup /
Media Offset).
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