• To remove stubborn smudges, moisten a soft, lint-free cloth with lens cleaner and gently wipe the
projection window.
Warning: Do not use a lens cleaner that contains flammable gas. The high heat generated by the
projector lamp may cause a fire.
Caution: Do not use canned air, or the gases may leave a flammable residue.
Parent topic: Projector Maintenance
Related tasks
Turning Off the Projector
Cleaning the Obstacle Sensor
Clean the projector's obstacle sensor glass (circled in red) periodically, or if you see a message telling
you to remove any obstacles that are interfering with the projection area.
• To remove dust or smudges, gently wipe the obstacle sensor glass with lens-cleaning paper.
• To remove stubborn smudges, moisten a soft, lint-free cloth with lens cleaner and gently wipe the
obstacle sensor glass.
Warning: Do not use a lens cleaner that contains flammable gas. The high heat generated by the
projector lamp may cause a fire.
259