JVC DLA-RS66 Manuel D'instructions page 20

Precautions during Mounting
Securing (mounting) the projector
.
When this unit is to be mounted to a fixed position for
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use, install it horizontally.
Make sure to secure the main unit to prevent
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accidents such as during an earthquake.
Securing with screws
Air Inlets
.
Remove the four feet at the bottom, and fasten using the
screws (M5 screws, 13 to 23 mm).
* Using screws other than those designated may cause
the unit to break down.
* Leave a clearance of at least 10 mm from the bottom
surface of the unit to allow it to take in cool air.
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4 Locations
Securing the projector (ceiling mount)
.
Special expertise and techniques are required for
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mounting this unit to the ceiling. Make sure that you
get the authorized dealer or a specialist to install it.
Take the necessary actions to prevent the main unit
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from falling off such as during an earthquake.
Regardless of the warranty period, JVC is not liable
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for any product damage caused by mounting the unit
with non-JVC ceiling fittings or to an environment that
is not suited for ceiling mount.
When using the unit with it suspended from a ceiling,
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pay attention to the surrounding temperature. When
a heater is in use, the temperature around the ceiling
may be higher than expected.