This function is only working with Windows PC/Laptop which is designed with and has PgUP and PgDn keys. HDMI (designed with MHL function) and USB Mini-B connection are required from the projector to your Windows PC/Laptop.

The maximum distance supported by the wired remote control is 10 meters.

The maximum distance supported by the wired remote control is 10 meters.

Please check the following settings to correct this issue. 

1. If the source gives the correct 3D information to the projector, the projector will switch to 3D automatically.
   If your source is from PC or steaming content, please select the correct 3D format via OSD Display > 3D > 3D mode.
2. Check the user manual and make sure that the resolution of your content supports 3D.
3. Press the DLP Link button on your 3D glasses to resync the projector and 3D glasses.
4. Please try to change the HDMI EDID setting to Standard.
5. Make sure that no other Projectors are sending DLP Link signals in the same room.
6. Watching in a relatively dark environment to avoid being influenced by other light sources.
7. Check the battery level on your DLP 3D Glasses
8. Adjust the watching distance and screen size within a normal range(Specs)
9. Stay in a fixed position, and try not to move too far/quickly on your head/3D glasses.
10. Try to adjust a colorful setting on the projector and avoid external light direct to your 3D glasses/screen.
11. If it's still not working, the issue might be caused by Hardware margin. You can switch to another projector or 3D glasses for a try.

The projector's filter should be replaced. Please replace the filter and reset the timer, and the flashing LED will stop.

This function is only working with Windows PC/Laptop which is designed with and has PgUP and PgDn keys. HDMI (designed with MHL function) and USB Mini-B connection are required from the projector to your Windows PC/Laptop.