3-20 Service Manual
5055-01X
• Go into diagnostic mode.
• Finisher tests - Sensor/sw tests
• Input Path - This is the paper exit sensor in the fuser activated
by moving the sensor actuator.
• Paper Register - Activate the paper registration sensor and
observe the display OP - CL.
• Tray 1 Exit - Activate the tray 1 exit sensor OP - CL.
• Tractor Home Pos. - Activate the tractor home sensor by rotating
the green paper clearing knob so that the tractor belt flag
actuates the sensor.
• Paper Full A - Activate the paper full A sensor by operating the
sensor flag while observing the display.
• Paper Detect - Activate the paper detect sensor by placing a
piece of paper into the sensor (photo interrupter)
• Staple Home Position - Activate the staple home position
sensor by rotating the geared wheel inside the stapler
clockwise. If the sensor is working properly, the display should
change from CL to OP at approximately 180° of rotation of the
wheel.
• No Staple - Remove the staple cartridge to activate the no
staple sensor.
• Punch Box Detect - Remove the punch box and activate the
punch box detector sensor level.
• Invert Path - Activate by placing a piece of paper into the sensor
(photo interrupter).
• Tray 2 Exit - Remove tray 2 and activate the tray 2 exit sensor.
• Elev. Upper Limit - Activate by pressing the paper full A and the
paper upper level together. This causes the elevator motor to
operate, allowing the sensor flag to clear the elevator upper limit
sensor, thereby activating the sensor.
• Elevator Lower Limit - Activate by inserting a piece of paper into
the elevator lower limit sensor (photo interrupter).
• Jogging Home Position - Activate by rotating the jogging motor
wheel.
• Pap. Upper Level - Activate by operating the paper upper level
sensor flag.
• Fin. Set Switch - Activate by inserting a non-conductive tool into
the opening below the staple door.
• Staple Cart. Set - Activate by removing then inserting the staple
cartridge.
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