Sanyo PLC-SU70 Service Manual

Also see for PLC-SU70: Owner's manual

Sanyo PLC-SU70 Service Manual Manual pdf 49 page image

-49-CleaningCleaning with air spray1. Remove the cabinet top following to “MechanicalDisassemblies”.2. 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 forcleaning camera and computer equipment. Use aresin-based nozzle only. Be vary careful not to damageoptical parts with the nozzle tip. Never use any kind ofcleanser on the unit. Also, never use abrasive materialson the unit as this may cause irreparable damage.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.Disassembly CleaningDisassembly cleaning method should only be per-formed when the unit is considerable dirty and cannotbe sufficiently cleaned by air spraying alone.Be sure to readjust the optical system after per-forming disassembly cleaning.1. Remove the cabinet top and main units following to“Mechanical Disassemblies”.2. Remove the optical base top following to “OpticalUnit Disassemblies”. If the LCD panel needscleaning, remove the LCD panel unit following to“LCD panel replacement”.3. Clean the optical parts with a soft cloth. Cleanextremely dirty areas using a cloth moistened withalcohol.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 kindof cleanser on these components.Since the LCD panel is equipped with an electroniccircuit, never use any liquids (water, etc.) to clean theunit. Use of liquid may cause the unit to malfunction.