Designjet T520 - roll not feeding - obstruction

[webstersltd]

Hi all, wonder if you could help me please.

Our Designjet T520 printer was afflicted with the infamous blue screen problem.

I ordered a replacement chip off ebay, and fitted it.  No problem.  Printer put back together and starts up this time.

The bad news.....One of the screws is missing, and I think I have inadvertently dropped it into the feed mechanism.  Because when I try to feed the paper in off the roll, the printer doesn't accept it, and the paper crinkles at the area where I think the screw is.  Looking down at the top of the printer, it's like a line of plastic rollers, and I think the screw is sitting under one of these rollers.

I've downloaded the service manual, but I can't work out what this part is called, and how I remove it so I can retrieve the screw? I thought maybe it's the starwheel, but I think this is further on in the printer after the paper is gripped?

Any ideas please?

Thanks

Alex

[Valsimot]

Use a sheet of heavier paper and try to move the screw by pushing a sheet of paper under rollers from front to back ( opposite of the normal paper path direction ). Like flossing teeth, maybe you will be able to push the screw back sou ut can be easily removed.

[webstersltd · Accepted solution]

Thanks for your suggestion.  That didn't work, but I was able to flip open the roll cover, reach down with a torx screwdriver and undo 4 bolts which released the paper feed guide.  I was then able to remove this from the printer and locate the screw.  Reassembled and it's working great now!