Most of Anycubic Photons maintaince information can be found on their website including some manuals: Photon Photon Zero

Luckily the Photons were made with minimum moving parts so there's not a lot to maintain these machines as long as they stay clean.

* Basic Maintainence

* Cleaning vat after printing

* Replacing FEP Film

* Z-Axis shaking repair

* Replace main LCD screen

*Motherboard swap / Access to inside printer

Is your print still failing? Make sure to re-level the printer and there are no cured resin artifacts on the build plate, vat, or the LCD screen.

MUST EXERCISE EXTREME CAUTION WITH ANY LCD SCREEN ISSUES