Chapter 5 Maintenance — MaintenanceENGLISH - 159MaintenanceBefore maintaining the projectorf Make sure to turn off the power before maintaining the projector. (x pages 51, 59)f When switching off the projector, make sure to follow the procedures in “Switching off the projector” (x page 59).MaintenanceOuter caseWipe off dirt and dust with a soft, dry cloth.f If the dirt is persistent, soak the cloth with water and wring it thoroughly before wiping. Dry off the projector with a dry cloth.f Do not use benzene, thinner, or rubbing alcohol, other solvents, or household cleaners. Doing so may deteriorate the outer case.f When using chemically treated dust cloths, follow the instructions written on its packaging.Lens front surfaceWipe off dirt and dust from the front surface of the lens with a soft clean cloth.f Do not use a cloth that is fluffy, dusty, or soaked with oil/water.f Since the lens is fragile, do not use excessive force when wiping the lens.Attentionf The lens is made of glass. Impacts or excessive force when wiping may scratch its surface. Handle with care.Notef If the projector is used in a dusty location, dust may accumulate near the ventilation ports (intake and exhaust) depending on theenvironment and operating conditions. This may adversely affect the ventilation, cooling, and heat dissipation inside the projector, thuscausing reduced brightness.f If brightness is noticeably reduced and the light source does not turn on, ask your dealer to clean inside the projector or replace the lightsource unit.
