Microtek CX4 - Manual (Page 41)

Cleaning the Lens
Any dirt or stains on the lens surface should be cleaned off immediately with
a piece of soft, dry cloth not made of cotton or velvet material. You may also
clean the projector by wiping gently the lens surface with a soft cloth
moisten with a mixture of water and a neutral detergent.
Cleaning the Projector Case
Unplug the power cord of the projector before cleaning the projector case.
Then, wipe away any dirt or stains with a soft, non-cotton or non-velvet
cloth. If the dirt or stains are not able to be removed, use a cloth moisten
with a mixture of water and a neutral detergent. Do not use any alcohol,
benzene, thinners, or any other chemical detergents. They will cause
damage or overheating to the projector.
Cleaning the Air Filter
The air filter located at the bottom of the projector should be cleaned once
every 100 working days. Without regular cleaning, the projector will be
blocked by dust, and it will cause the projector to overheat due to poor
ventilation.
The Steps of Cleaning the Air Filter
1. Turn off the power and unplug the power cord.
2. Stand the projector up with the handle at the top so that easy access
can be made to the air filter.
3. Take off the filter cover.
4. A small size vacuum cleaner for computer or office use can be used for
cleaning the filter, or a piece of dry, non-cotton or non-velvet cloth can
be used in the cleaning process.
Attention: If the clogged dirt is difficult to clean away or if the filter is
old, a replacement of a new filter is required. Please contact the
dealer of this projector for this part.
5. After the filter is cleaned, put it back to the original place, and put the
filter cover on properly making sure the screws are secured.
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