Sanyo PLC-XC50 Service Manual

Also see for PLC-XC55: Brochure Owner's manual Manual Manual Specification sheet

Contents

-11-MaintenanceHow to check Lamp Used TimeThe LAMP REPLACE indicator will light yellow whenthe total lamp used time (Corresponding value) reaches3,000 hours. This is to indicate that lamp replacementis required.The total lamp used time is calculated by using the be-low expression,Total lamp used time = Teco + Tnormal x Teco: used time in the Eco modeTnormal : used time in the Normal mode and Automode.You can check the lamp used time following to the belowprocedure.1 Press and hold the ON/STAND-BY button on the pro-jector for more than 0 seconds.2 The projector used time and lamp used time will bedisplayed on the screen briefly as follows.CounterProjector 525HLampNormal 150HEco 375HCorresponding value 675HTotal lamp used timeProjector used timeCleaningCleaning with air spray1. Remove the cabinet top following to “Mechanical Dis-assemblies”.. Clean up the LCD panel and polarizing plate by usingthe air spray from the cabinet top opening.Caution:Use a commercial (inert gas) air spray designed forcleaning camera and computer equipment. Use a resin-based nozzle only. Be very careful not to damage opticalparts with the nozzle tip. Never use any kind of cleanseron the unit. Also, never use abrasive materials on theunit as this may cause irreparable damage.After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass,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 clean theoptical unit.Disassembly CleaningDisassembly cleaning method should only be performedwhen the unit is considerable dirty and cannot be suf-ficiently cleaned by air spraying alone.Be sure to readjust the optical system after perform-ing disassembly cleaning.1. Remove the cabinet top and main units following to“Mechanical Disassemblies”.. Remove the optical base top following to “Optical UnitDisassemblies”. If the LCD panel needs cleaning, re-move the LCD panel unit following to “LCD panel re-placement”.3. Clean the optical parts with a soft cloth. Clean ex-tremely dirty areas using a cloth moistened with al-cohol.Caution:The surface of the optical components consists of mul-tiple dielectric layers with varying degrees of refraction.Never use organic solvents (thinner, etc.) or any kind ofcleanser on these components.Since the LCD panel is equipped with an electronic cir-cuit, never use any liquids (water, etc.) to clean the unit.Use of liquid may cause the unit to malfunction.