My Apple Laserwriter II NT prints a test page fine, and also prints the
first page of a document. However, on a multiple page document, it
stops after the first page and gives me a "out of paper" light. I am
wondering how to check if this is a pick up roller problem, or a paper
sensor arm, or something more serious. Any suggestions?

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My Apple Laserwriter II NT prints a test page fine, and also prints the
first page of a document. However, on a multiple page document, it
stops after the first page and gives me a "out of paper" light. I am
wondering how to check if this is a pick up roller problem, or a paper
sensor arm, or something more serious. Any suggestions?

Take the lid off and watch the mechanism go through the cycle. You
should be able to tell what's going on when it stops.

If it's a rubber roller, sometimes you can rejuvenate them with
sandpaper, by removing the glaze.

BTW, those printers are tanks. They're not fast, but the output is clean
and they run forever. Worth a little effort to fix, IMO.

Isaac