5501i shifting image

[Copystar Tech]

I have a 5501i that occasionally, and I mean very occasionally, will shift the copied image 4 inches up the page (towards the back of the machine). It seems to occur only on copies or scans through the doc feeder. All trays are affected, and all pages in a job. I have seen it happen once, and the tray and doc feeder were registering the proper size. A month or so ago, it threw a C 9000 error (DP Comm error). I flashed the machine and didn't think much of it till now. Kyo tech support said maybe bad DIMMS, but I'm leaning towards DP main PWB. Thought I would see if anyone has an opinion on this before I start stabbing in the dark with parts orders.

[Tonerkiller]

I would start with the adf size det. board

[blackcat4866]

Very common! Here is the database record:

Scanned original image is cut off on Letter R originals only. Resulting PDF image was scanned as 5 1/2" x 8 1/2" statement-R. Scan to email. Original tray width sensor incorrectly reads original width. Clean the brush and detection PWB, and apply conductive grease to the brush.

=^..^=

[tmaged]

Size detection board should cut off, not shift up the image. I'd go with DIMM's as well. If it was the second side on a single pass feeder, then ADF pwb. The machine is doing the processing of the front side image, so the adf is just transporting the document through.