EPSON AcuLaser C3800 User's Guide
4. Raise the transfer unit and pull it up out of the printer.
5.Take the new transfer unit from its package.
6.Lower the transfer unit inside the printer making sure that the posts on the transfer unit into the guides, then pull down the transfer unit.
7. Remove the protective material from both sides of the transfer unit.
cCaution:
Do not touch the transfer belt on the transfer unit to avoid damaging it.
Replacing Consumable Products 240