NEC NC900C, Руководство по установке

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39
Setting Up Your Projector
2-5. Mounting the Lens Unit
This device can use 5 types of lens units (sold separately).
MODEL Magnifying
NP-9LS14Z 1.36–1.63
NP-9LS16Z 1.63–2.03
NP-9LS20Z 2.03–2.72
NP-9LS27Z 2.72–4.07
NP-9LS40Z 4.07–6.34
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.
• Turn off the power and wait for the cooling fan to stop and turn off the main power switch before mounting or
removing the lens.
• When dismounting the lens from the projector, return the lens position to the center position before turning off
the power. Failure to do so may prevent the lens from being mounted or dismounted because of narrow space
between the projector and the lens.
• 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 the dust cap on the projector to prevent
dust or dirt from getting inside.
Preparation: Remove the front cover. (page 25)
NOTE
If you remove the front cover, the following error message is displayed on the LCD screen of the main unit operat-
ing panel by the tamper detection circuit.
“Tamper Fail”, “Service Door Tamper”
Encrypted contents cannot be displayed while an error message is being displayed. Refer to “3-2. Recovering
from Tamper Errors” (page 47) for the recovery procedure.
1
Remove the dust cap from the projector.
2
Remove the lens cap on the back of lens.
NOTE
Mounting the lens with lens cap on its back to the projector can cause malfunction.