Epson AcuLaser C2900N Service Manual page 449

Chapter 3 Removal and Replacement Procedures Revision B
3) Attach the ROM that were removed
from old PWBA ESS SFP on IC sockets
of new PWBA ESS SFP with its notch
aligned with the notch in IC socket.
4) Secure the PLATE IF M to the PWBA
ESS SFP with the two screws (silver,
6mm).
5) Secure the USB connector of the
PWBA ESS SFP to the PLATE IF M with
the one screw (silver, 4mm).
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Epson AcuLaser C2900N