Finisher - Lexmark X850e Service Manual

7500-XXX

Finisher

• Sensor (finisher media entrance)
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A photo-reflective sensor detects whether media is fed from the bridge unit assembly to the finisher
—
It turns high (+5 V dc) while media is present within the sensing area.
—
When the level turns high due to the first media of the second set during multi-set printing, this sensor
activates the buffer diverter solenoid to switch the buffer diverter gate so that the media goes in the
buffer roll assembly's circumferential direction.
• Sensor (diverter gate)
—
A photo-reflective sensor that detects the leading edge of the media
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It turns low (0 V) when the front end reaches the sensing area.
• Sensor (lower media exit)
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A photo-interrupter sensor that detects whether media passes through the sensor (lower media exit)
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It turns high (+5 V) (light receiving) when the actuator is driven out of the sensing area by the media.
—
When the level turns high, this sensor 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
• Sensor (compiler media present)
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A photo-interrupter sensor that detects whether media is present or not on the compiler unit assembly.
—
While media is present, the actuator is outside the sensing area, and the sensor turns high (+5 V dc)
(light receiving).
• Sensor (buffer path)
—
A photo-interrupter sensor that detects whether media is fed toward the buffer roll assembly
—
While media is present, the actuator is outside the sensing area, and the sensor turns at high (+5 V dc)
(light receiving).
• Sensor (upper media exit)
—
A photo-interrupter sensor that detects whether media is fed to the upper media exit roll assembly top at
the exit side of the upper media bin
—
When the media is fed, the actuator leaves from the sensing area, and the sensor turns high (+5 V dc).
• Sensor (upper media bin full)
A photo-reflective sensor that detects the stack volume of media in the upper media bin
Sensor (diverter gate)
Sensor (finisher
media entrance)
From bridge unit
Sensor (buffer path)
1-12
MFP Finisher Service Manual
Sensor (upper media exit)
Sensor (upper media bin full)
Sensor (compiler media in)
Sensor (lower media exit)