Your projector needs little maintenance to keep working at its best.
You may need to clean the projector lens periodically, and clean the air filter and air vents to prevent the projector from overheating due to blocked ventilation.
The only parts you should replace are the air filter and remote control batteries. If any other part needs replacing, contact Epson or an authorized Epson servicer.
If you have to send your projector in for service, you should reset your projector settings. See the link below.
This projector uses a sealed laser light source which does not need servicing and cannot be replaced.