UBI EasyCoder 501 – Service Manual10114. SENSOR KIT14.2InstallationRibbon Low Sensor:• Open the right hand door.• Turn off the power and remove the left-hand cover.• From the paper compartment side, insert the connector and cablethrough the square hole in the centre-line wall.• Insert the sensor under the code disk of the ribbon unwind unit sothe disc will run in the U-shaped slot between the receiver andtransmitter.• Attach the sensor to the centre-line wall by means of one #T10Torx screw. Check that the code disc can rotate freely.• Connect the cable to P-605 on the CPU board, see chapter 17.4.• Continue by fitting the paper low sensor.Paper Low Sensor:• Remove the three #T20 Torx screws holding the large crescent-shaped guide plate that surrounds the paper supply unit, seechapter 5.1. Remove the guide plate.• Fit the sensor under the code disc of the upper supply unit usingthe same method as with the ribbon low sensor.• Connect the cable to P-602 on the CPU board, see chapter 17.4.• Fit back the guide plate and the left-hand cover.Note!The ribbon unwind unit and the papersupply unit are shown dismounted inthe drawing only to improve visibility.In reality, the only part that requiresdismounting is the guide plate.Guide Plate(remove)Ribbon Unwind Unit(do not remove)Paper Supply Unit(do not remove)Sensor#T10 Torx screw#T20 Torx screw (3x)Sensor#T10 Torx screw