What you can safely clean

• Projection screen surface: fixed-frame, pull-down, tripod, or portable. Use a soft method to avoid micro-scratches.
• Outer projector lens glass: dust and fingerprints on the outside only.

What NOT to clean (at home)

• Internal LCD panels / polarizers / prisms: opening the optical block risks permanent damage and voided warranty.
• Coated optics inside the projector: solvents can strip coatings or leave haze. Seek professional service.

Rule: clean the screen and the outer lens. Leave the inside to service centers.

Materials checklist

• Microfiber cloths (two or more, clean & lint-free)
• Bulb blower (or compressed air used sparingly, upright)
• Distilled water in a small spray bottle
• Mild dish soap (1–2 drops in 250 ml distilled water) for screens
• Lens cleaner labeled safe for multi-coated optics (for the outer lens only)
• Soft brush for edges/bezels
• Gloves (optional) to avoid fingerprints

Avoid harsh chemicals, paper towels, window cleaners, and high-strength alcohol on screens or coated optics.

How to clean a projection screen (step-by-step)

1. Power down nearby devices and ensure the screen is cool and stable.
2. Dry dust: use a clean microfiber or soft brush; wipe in straight, gentle passes.
3. Spot clean: lightly mist a microfiber with the soap solution (don’t soak the screen). Dab—not rub—on smudges.
4. Wipe & dry: follow with a second microfiber slightly dampened with distilled water; finish with a dry microfiber.
5. Stubborn marks: repeat light passes. If the surface is specialty (ALR/ambient-light-rejecting), check the manufacturer’s care guide.

How to clean the projector outer lens

1. Unplug & cool down the projector fully.
2. Blow off dust with a bulb blower (or short bursts of upright compressed air).
3. Lens cleaner: apply a drop to a microfiber; never drip directly on the lens. Wipe in small circles from center outward.
4. Dry & inspect: use a fresh, dry microfiber; check under light for streaks.

Do not open the projector or touch internal LCD/polarizer assemblies at home.

Dust & maintenance tips

• Use a dust cover when not in use; keep the room clean and ventilated.
• Place the projector on a stable shelf; avoid fabric surfaces that shed lint.
• Replace/clean filters as per the manual; keep vents clear.
• If you see persistent spots/bands/colors after cleaning, seek service (could be internal dust or panel damage).

বাংলা টিপস

কি পরিষ্কার করবেন: প্রোজেক্টর স্ক্রিন (ফিক্সড/পুল-ডাউন/ট্রাইপড) ও প্রোজেক্টরের বাইরের লেন্স। কি পরিষ্কার করবেন না: ভেতরের LCD প্যানেল/পোলারাইজার/অপটিক্স — এগুলো সার্ভিস সেন্টারেই করা উচিত।

স্ক্রিন পরিষ্কার: মাইক্রোফাইবারে হালকা সাবান-পানি (ডিস্টিলড) স্প্রে করে দাগে ড্যাব করুন; পরে ডিস্টিলড পানি ও শুকনো কাপড়ে মুছে নিন। লেন্স: বাল্ব ব্লোয়ার দিয়ে ধুলো সরিয়ে লেন্স-সেফ ক্লিনার দিয়ে হালকা করে মুছুন।

References

• Projection screen materials
• Optical coatings (why gentle cleaners matter)
• LCD basics