Xerox Phaser 840 Service Manual page 213

If you use the removal tool, rotate the removal tool's plastic leg into its up position.
9.
Slide the removal tool's standoff locks inward.
Place a sheet of transparency film or 10 sheets of paper between the printhead and the
10.
drum to protect the drum surface.
If you use the printhead removal tool, carefully, lower it onto the printhead. Rotate
11.
the process motor to tilt the printhead forward about 2.5 cm (1 inch).
If you use the removal tool, slide the standoff locks outward to secure the tool to the
12.
printhead. Loosen the two mounting screws securing the printhead in place.
Carefully lift on the plastic posts at each end of the printhead to remove the printhead
13.
and place it on a flat surface. If you are using the removal tool, lift and remove the
printhead. Lower the removal tool's leg to safely rest the printhead on a flat surface.
Mounting screw
Fig 7-16 Removing the printhead
Removal and Replacement Procedures
Lift printhead by
the plastic posts
at each end
Mounting screw
840-4-89
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