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Installation of Navitar/NuView Series 633 lens on Sharp model PG-C45, 
XG-C50, C55, C58, C60 & C68 projectors. 

                                                               

 

TOOLS REQUIRED: PHILLIPS HEAD SCREWDRIVER, SMALL FLATHEAD 
SCREWDRIVER 
 

Disassembly: 
 

1.  Disconnect unit from power source and place projector with lens facing you.  Place 

flathead screwdriver in cover slot about three inches behind lens front and gently 
depress retainer. Lens cover should slide forward with ease. Remove cover and set 
aside for reinstallation. 

 

2.  Gently depress center section of lower lens cover and remove. Set cover aside for 

reinstallation. 

 

3.  Remove four Phillips head screws holding prime lens in place and remove prime 

lens.  

 
Assembly: 
 

1.  Ensure that your NuView lens and its adapter are separate. Using four (4) Phillips 

head screws removed in (3), above, install the adapter correct side up into the 
projector. 

 
2.  Replace the front lower and upper cover of the projector removed in step 1 and 2, 

above. 

 

3.  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! 

 

 

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