Finisher - Lexmark W840 Finisher Service Manual

Finisher

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Sensor (finisher media entrance)
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A reflective photo-sensor to detect whether media is fed from the bridge unit assembly to the finisher
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It turns "H" (+5 V dc) while media is present within the sensing area.
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When the level turns "H" due to the first media of the second set during multi-set printing, activates
the buffer diverter solenoid to switch the buffer diverter gate so that the media goes in the buffer roll
assembly's circumferential direction.
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Sensor (diverter gate)
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A reflective photo-sensor to detect the media leading edge
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It turns "L" (0 V) when the front end reaches the sensing area.
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Sensor (lower media exit)
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A photo-interrupter to detect whether media passes through the sensor (lower media exit)
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It turns "H" (+5 V) (light receiving) when the actuator is driven out of the sensing area by the media.
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When the level tunes "H", activates the front tamper motor and the rear tamper motor on the compiler
unit assembly.
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This sensor is also used to control on/off of the media eject motor assembly.
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Sensor (compiler media present)
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A photo-interrupter to detect whether media is present or not on the compiler unit assembly.
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While media is present, the actuator is outside the sensing area, and the sensor turns at "H" (+5 V dc)
(light receiving).
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Sensor (buffer path)
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A photo-interrupter to detect whether media is fed toward the buffer roll assembly
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While media is present, the actuator is outside the sensing area, and the sensor turns at "H" (+5 V)
(light receiving).
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Sensor (upper media exit)
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A photo-interrupter to detect whether media is fed to the upper media exit roll assembly Top at the exit
side of the upper media bin
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When the media is fed, the actuator leaves from the sensing area, and the sensor tunes "H" (+5 V).
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Sensor (upper media bin full)
A reflective photo-sensor to detect the stack volume of media in the upper media bin.
Sensor (diverter gate)
Sensor (finisher
media entrance)
From bridge unit
Sensor (buffer path)
Sensor (upper media exit)
Sensor (upper media bin full)
Sensor (compiler media in)
Sensor (lower media exit)
Diagnostic aids
4024-XXX
3-11