NEC PG Series

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      >> Mechanical Setup Procedure 
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The Adjustments

TOP COVER

Have everything plugged in, and ready to go. A source signal will be required to give the PG something to lock onto. The first step is to open the hood. Loosen the top 2 screws on the cover and hinge it open to it's locked position. Remove the 2 screws on each side of the front bezel (decorative front panel) that surrounds the lenses, and pull the bezel off.

LENSES

Now take a screwdriver and carefully remove the 4 screws that hold each lens in position. On the PG6000 and 9000, these are long black slotted screws that almost look like dowels. On the PG6100/9100 and up, these are plain brass coloured Philips head screws. A magnetic screwdriver is helpful here. The lenses are HEAVY, so be careful.

You should now have all 3 lenses removed, and sitting on a soft cloth. This is a good time to look at the tubes. In a perfect world you should see 3 clean white tube faces, devoid of any markings. Often however, this is not so. Most likely one or more tubes will exhibit some sort of wear, or even burn. If the tubes are worn, a trapezoidal shadow will be visible in one or more tubes. It .should. be in the center of the tube. In many cases it is not. This is a sure indication of improper alignment. I will not go into the details of explaining worn or burned tubes here, as there are other good articles and pictures to demonstrate this. For the purposes of this document, we will assume that all 3 tubes are good.