Dell 2135cn Service Manual page 734

Chapter 3 Removal and Replacement Procedures (RRPs)
Replacement 50 COVER ASSY SIDE R (PL10.1.6)
1) Mate the two hooks of the COVER
ASSY SIDE R with the holes of the printer.
2) Shift the COVER ASSY SIDE R to rear
side, secure the front hook of the COVER
ASSY SIDE R to the printer.
3) Secure the COVER ASSY SIDE R to
the printer with the eight screws (silver,
tap, 8mm).
4) Close the COVER WINDOW TNR.
Go to the next replacement step:
Replacement 51 FUSER ASSY (PL6.1.1)
3 - 232
Version 
2008.03.31