Sanyo plc-wu3800 Service Manual

Also see for PLC-WU3800: Dimensional drawing Manual Manual Command list Specification sheet

Contents

-10-MaintenanceCleaningCleaning with air sprayRemove the cabinet top following to“ Mechanical Disassembly”. Clean up the LCD panel and polarizing plate byusing the air spray from the cabinet top opening.Caution:Use a commercial (inert gas) air spray designed for cleaning camera and computer equipment. Use a resin-basednozzle only. Be very careful not to damage optical parts with the nozzle tip. Never use any kind of cleanser on theunit. Also, never use abrasive materials on the unit as this may cause irreparable damage.Disassembly CleaningDisassembly cleaning method should only be performed when the unit is considerable dirty and cannot besufficiently cleaned by air spraying alone.Be sure to readjust the optical system after performing disassembly cleaning.1. Remove the cabinet top and main units following to“ Mechanical Disassembly”.2. Remove the optical base top following to “Optical Unit Disassembly”. If the LCD panel needs cleaning, removethe LCD panel unit following to“ LCD panel replacement”.3. Clean the optical parts with a soft cloth. Clean extremely dirty areas using a cloth moistened with alcohol.Caution:The surface of the optical components consists of multiple dielectric layers with varying degrees of refraction.Never use organic solvents (thinner, etc.) or any kind of cleanser on these components.Since the LCD panel is equipped with an electronic circuit, never use any liquids (water, etc.) to clean the unit. Useof liquid may cause the unit to malfunction.After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarizedglass, lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit.Remove dust and other particles using air spray. If dirt cannot be removed by air spray, disassemble and cleanthe optical unit.Cleaning the Projector CabinetCleaning the Projection LensUnplug the AC power cord before cleaning.Gently wipe the projection lens with a cleaning cloth thatcontains a small amount of non-abrasive camera lenscleaner or use a lens cleaning paper or commerciallyavailable air blower to clean the lens.Avoid using an excessive amount of cleaner. Abrasivecleaners, solvents or other harsh chemicals might scratchthe surface of the lens.Unplug the AC power cord before cleaning.Gently wipe the projector body with a soft dry cleaningcloth. When the cabinet is heavily soiled, use a smallamount of mild detergent and finish with a soft dry cleaningcloth. Avoid using an excessive amount of cleaner. Abrasivecleaners, solvents or other harsh chemicals might scratchthe surface of the cabinet.When the projector is not in use, put the projector inan appropriate carrying case to protect it from dust andscratches.