Sanyo PLC-XF45, Service Manual, Page: 25 / 147

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Improvement of the Optical parts
1. When the garbage adheres to the surface basically about all optical parts,it is desirable to
clean in air spray and so on.
2. When the above way can not be removed,wipe the dry cleaning with wiping cloth
and the wiper there is little time dust and so on.
3. When the above way can not be removed,soak a few medicines in the cloth as follows and wipe
up them lightly. After that,always wipe the dry cleaning cloth.
Optical parts Medicines Remark
LCD panel
Iso-propyl-alcohol
In case of cleaning,pay attention
to the static electricity and specifical-
ly,don't touch the terminal of FPC.
Polarized glass
(Glass with plastics sheet)
Methanol
Synthetic detergent
Iso-paraffin liquid
Wipe up lightly.
Because there is fear that the film
comes off the substrate when wiping
up by the strong power.
Dichroic mirror
Optical filter
(Glass with the surface coat)
Alcohol
(methanol:ethel=8:2)
Lens kind
Condenser lens
Integrator lens
Prism
Ethanol
The list of the medicine to recommend
Disassembly Cleaning
Disassembly cleaning method should only be performed when the unit is considerable
dirty and cannot be sufficiently cleaned by air spraying alone.
Be sure to readjust the optical system after performing disassembly cleaning.
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.
Use of liquid may cause the unit to malfunction.
After long 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 other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean the optical
unit.
Caution:
Use a commercial (inert gas) air spray designed for cleaning camera and computer equipment.
Use a resinbased nozzle only. Be very careful not to damage optical parts with the nozzle tip.
Never use any kind of cleanser on the unit. Also, never use abrasive materials on the unit as this
may cause irreparable damage.