Epson AcuLaser C2900N Service Manual page 451

Chapter 3 Removal and Replacement Procedures Revision B
9) Engage all the connectors of the
PWBA ESS SFP.
10) Mate the five bosses of the printer
with the holes of the SHIELD ASSY
ESS, secure it with the eleven screws
(silver, 6mm).
3 - 197 Confidential
Epson AcuLaser C2900N