Removing The Drum Position Sensor Assembly (Phaser 840 Printer) - Xerox Phaser 840 Service Manual

Remove the three screws securing the drum position sensor assembly housing to the
9.
print engine. Insert the gap tool to hold the encoder wheel in position. Slide the
assembly off the drum shaft. If necessary, use the small flat-blade screwdriver to push
the encoder disk hub along the shaft as you remove the assembly.
Fig 7-12 Removing the drum position sensor assembly
(Phaser 840 printer)
Reverse these steps to reinstall the drum position sensor assembly. The drum must be in
the same position relative to the drum position encoder wheel when the drum position
sensor assembly was removed. This ensures that the stripper fingers contact the drum in
the same location as before; otherwise, print artifacts will result.
Install the encoder wheel on the drum shaft, precisely aligning the home flag to
I
the alignment mark drawn on the shaft.
Use the encoder wheel gap tool to space the encoder wheel to the drum position
I
sensor.
Slide the
retaining spring
out of the
groove
Drum position
sensor
assembly
Screws
Removal and Replacement Procedures
Groove
840-4-18
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