NEC NC2041L, Installation Manual

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78
Setting Up Your Projector
2-7. Mounting the Lens Unit
The lens units that can be attached to this projector are shown in the following table.
Since this is a laser projector, the installation procedure of the lens unit is not disclosed. To install or adjust an optional lens
unit, contact your dealer/distributor.
MODEL Magnifying
NC-50LS12Z 1.13–1.66
NC-50LS14Z 1.30–1.85
NC-50LS16Z 1.45–2.17
NC-50LS18Z 1.63–2.71
NC-50LS21Z 1.95–3.26
L2K-30ZM 2.71–3.89
NOTE
• The other NEC optional lenses are not available on this model.
• The projector and lenses are made of precision parts. Do not subject them to shock or excessive forces.
• Remove the lens unit when moving the projector. If not, the lens could be subject to shock while the projector
is being moved, damaging the lens and the lens shift mechanism.
• When removing or installing the lens unit, return the position of the lens to the center before turning off the
power to the projector. If the position of the lens is not returned to center, the front cover will interfere with the
lens and the cover cannot be removed or installed.
• When installing or removing the lens unit, first confirm that the main power switch to the projector is off, and
then disconnect the AC power supply. After the AC power supply has been disconnected, allow the projector
to sufficiently cool before starting this work.
• Never touch the lens surface while the projector is operating.
• Be very careful not to let dirt, grease, etc., on the lens surface and not to scratch the lens surface.
• Perform these operations on a flat surface over a piece of cloth, etc., to prevent the lens from getting scratched.
• When leaving the lens off the projector for long periods of time, mount Dust-proof cushion on the projector to
prevent dust or dirt from getting inside.
NOTE
• If you remove the lens cover, a tamper event is detected by the tamper detection circuit. When you start the
projector after attaching the cover, the following error message is displayed on the LCD screen of the projector
main unit.
- “IMB: Service Door Tamper” (When NP-90MS01 mounted)
• Encrypted contents cannot be displayed while an error message is being displayed. Refer to “3-2. Recovering
from Tamper Errors” (page 87) for details on how to clear the error message.