Xerox 7750DXF - Phaser Color Laser Printer Service Manual page 236

Replacement Procedure
Note
Ensure the developer assemblies are fully and evenly seated when
reinstalling the imaging unit plate assembly. There is a locating pin at the
back of each developer housing assembly.
Lightly tug the wires to ensure that they are not pinched by the plate or
developers while reinstalling.
Center the connectors flat against the wire guide with the yellow developer
connector further to the right.
Caution
Be very careful not to catch any of the wires on the left-hand side of the plate
while re-installing. There are two locating holes in the imaging unit plate
assembly that correspond to locating pins on the frame of the printer. Failure
to align the holes with the pins prior to tightening screws could result in
bending the plate.
Imaging Unit Rail Assembly
1. Remove the waste cartridge.
2. Remove the imaging units and protect them from light.
3. Remove the imaging unit plate cover, see page 8-22.
4.
Raise the main lever and loosen but do not remove the screw holding the front
rail retaining bracket.
5. Disconnect the erase lamp.
6. Lower the main lever, bias the front rail retaining bracket towards the front of the
printer and then remove the rail.
7. When installing the replacement rail, make sure both tabs are in the slots in the
front and rear mounting brackets.
8-24 Phaser 7750 Printer Service Manual