Epson AcuLaser C2900N Service Manual page 475

Chapter 3 Removal and Replacement Procedures Revision B
[Replacement]
Note: Use the wrist strap to protect the PWB from the electrostatic.
1) Mate the holes of the PWBA MCU with
the tabs of the printer, attach it.
2) Secure the PWBA MCU to the printer
with the six screws (silver, 6mm).
3 - 221 Confidential
Epson AcuLaser C2900N