Dell 2135cn Service Manual page 610

Chapter 3 Removal and Replacement Procedures (RRPs)
35) Remove the one screw (silver, M4,
6mm) that fixes the rear side of the
DISPENSER ASSY.
36) Remove the one screw (silver, tap,
8mm) that fixes the left side of the printer
frame.
37) Remove the UPPER UNIT.
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Version 2 2008.03.31