Dell 2130cn Service Manual page 463

Chapter 3 Removal and Replacement Procedures (RRPs)
5) Rotate the four stoppers of the PHD
UNIT (PL4.1.21) to the counter clock wise
direction, to release the lock.
6) Remove the PHD UNIT toward you by
pulling it by the left and right handles.
7) Lift up the PHD Unit from the printer.
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