Navitar 637MCZ275 User manual

Installation of Navitar/ NuView Series 637 lens on NEC model MT860,
MT1060, MT1065 & MT1075 projectors
TOOLS REQUIRED: PHILLIPS HEAD SCREWDRIVER, 2.5mm LONG ARM ALLEN
WRENCH.
Disassembly:
1. Disconnect unit from power source and place projector with lens facing up. Remove
two (2) screws from bottom of lens cover. Remove cover and set aside for
reinstallation.
2. Remove four 3/32” hex head screws holding prime lens in place, disconnect two wire
harness connectors and remove prime lens.
Assembly:
1. Separate your Navitar lens and adapter (except on MCZ275) by gently rotating the
lens counterclockwise while holding the adapter. DO NOT place undo pressure on
the lens to separate as this may result in damage to the nylon drive pin.
2. Using the four (4) fillister head screws supplied, install the adapter correct side up
into the projector
3. Replace the front cover of the projector removed in step 1, above.
4. To focus, gently twist the front of lens. To zoom, loosen thumbscrew and twist
knurled ring (zoom lenses only, of course). Re-tighten thumbscrew. CAUTION: Do
not twist entire lens out of adapter! On MCZ275 models twist the inner knurled ring
to zoom and twist the outer knurled ring to focus the lens.