K400 K500 K600 Series Projector Maintenance Guide

1. How to change the Chinese menu to English menu?

Operation instruction video connection: https://youtu.be/FOW26jquUJk

2. Prompt filter warning, how to operate filter time reset？

First clean the dust off the filter, then follow the video steps below

Operation instruction video connection: https://youtu.be/C4UiR9awb_Y