78 Service Manual
4039-1XX
HVPS Removal
1. Unplug the power cord.
2. Remove the left cover
3. Remove the fuser input guide.
4. Remove the transfer roll housing.
5. Remove the fuser cover.
6. Disconnect the cable from the HVPS connector.
7. Remove the power switch rod.
8. Remove the ground screw [B].
9. Remove the mounting screws [C].
10. Pull the ground strap through the hole [D].
11. The power supply is held in place by two latches on the left side.
To release the latches:
•Push one latch [E] in and raise one of the studs [F] to release
the latch.
•Push the other latch [E] in and raise the other stud [F] to
release the latch.
12. Lift the power supply until the studs [F] align with the large
openings, then move the power supply to the right to release it
from the frame.
13. Move the front of the power supply to the right (to clear the fuser
power wires).
14. Tilt the front of the power supply up and lift it out of the machine