FRU Disassembly 8-47
1. Remove the Front Duct (page 8-44), but do not remove the Sub Fan from the
duct.
2. Remove the three screws (silver machine with flange, 8 mm) that attach the
Upper Duct.
3. Tilt out the left side of the Upper Duct to clear the connector, and remove the
duct.
4. Release the three cable restraints on the inside of the Front Tie Plate.
5. If a Phillips screwdriver with a shaft at least 6.5 in. (16.5 cm) long is not
available, remove the eight screws (silver machine, 6 mm) attaching the Front Tie
Plate to the frame, and remove the Front Tie Plate.
6. Release the harnesses from two cable clamps on top of the Laser Unit Assembly.
Caution
The printed circuit board on the Laser Unit Assembly is fragile. Support the
circuit board to prevent it from flexing and possibly cracking when
unplugging the connectors in the following step.
Note
Avoid touching the glass LASER window strip with finger tips or anything
that could leave deposits.
7. Unplug the harness connector at P/J 131, and the three connectors, P/J140,
P/J160, and P/J170, from the Laser Unit circuit board.
8. Remove the four screws (black with flange, 8 mm) that attach the Laser Unit
Assembly to the frame.
9. Lift the Laser Unit Assembly out of the printer frame.
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