Nikon NP64 - Manual (Page 89)

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7. Maintenance
3. Loosen the two screws securing the lamp housing until the phillips screwdriver goes into a freewheeling
condition.
The two screws are not removable.
Remove the lamp housing by holding the handle.
Interlock
NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
Fig. A Fig. B Fig. C
Note: Removing or Inserting the Lamp (Sticking of Packing Ring)
After lamp replacement, a black packing ring may be stuck inside the projector (Fig. A and Fig. B).
If this happens, do the following:
• If the used packing ring does not remain inside the projector (Fig. C), proceed with the new lamp housing in-
stallation.
• If the used packing ring is stuck inside the projector (Fig. B), remove it from inside the projector before install-
ing the new lamp housing. To remove the packing ring, simply pull it off of the stud.
* In other cases where the lamp is removed (other than lamp replacement), pulling out the lamp housing may
also cause the packing ring to stay stuck inside the projector. If this happens, make sure to insert the lamp
housing back in its original position.
CAUTION
• Before removing the used packing ring, be sure to turn off the projector, wait for the cooling fan to stop, dis-
connect the power cable, and allow at least one hour for the lamp to cool.
The projector can become very hot when it is turned on and stay hot immediately after it is turned off.
• Do not install a new lamp with the used packing ring stuck inside the projector as it requires excessive
force to install the new lamp which then may cause damage to the projector.