From Punch To Upper Media Bin; Functions Of Sensors Along The Media Path; Bridge Unit Assembly - Lexmark C950 Service Manual

The media eject shaft assembly is driven by the media eject motor assembly to transfer media to the stacker
media bin.
After media is transferred to the stacker media bin, it is held by the clamp paddle attached to the media eject
shaft assembly.

From punch to upper media bin

The media to be ejected to the upper media bin is switched in the media path by the finisher diverter gate
located behind the punch and fed in the upper media transport roll assembly direction.
The finisher diverter gate is switched by the finisher diverter gate solenoid. While the solenoid is activated,
media is fed in the upper media transport roll assembly direction.
The two upper media transport roll assemblies driven by the motor (buffer/transport) feed media to the upper
media exit roll assembly top at the top of the finisher.
The upper media exit roll assembly top driven by the drive motor (exit) ejects the media to the upper media bin.
The upper media exit roll assembly decelerates after a specified period of time from the following trigger events.

Functions of sensors along the media path

Bridge unit assembly

• Sensor (bridge unit media entrance)
A photo-interrupter sensor that detects whether media is fed from the printer to the bridge unit assembly.
–
It turns high (+5 V dc) (light receiving) when media enters the bridge unit assembly.
–
• Sensor (bridge unit media exit)
A photo-interrupter sensor that detects whether media passes through the bridge unit assembly.
–
– It turns high (+5 V dc) (light receiving) when media reaches this sensor, and turns low (0 V dc) when
media exits from the bridge unit assembly.
• Sensor (bridge unit top cover interlock)
A photo-interrupter sensor that detects open/close of the bridge top cover assembly of the bridge unit
–
assembly.
It turns high (+5 V dc) (light receiving) when the bridge top cover assembly opens.
–
Bridge media
entrance sensor
Bridge unit assembly
Transport rolls
Bridge exit sensor
Decurler roll
5058-030
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