LaserJet 1536 scan problem w/ vertical line using automatic feed tray

Question

When a document is scanned using the automatic feeder the printout has a vertical line top to bottom.  When scanned using the flat bed scanner there is no vertical line printed.  Is there a separate upper laser scanner in the automatic feed lid that now has some kind of flaw?  New toner/drum cartridge so no lack of toner.  All other features seem to work fine.
Update: after finding other comments on this problem, I re-looked at the scan glass strip and found a pencil dot smudge that normal wiping did not clean off.  The automatic feeder scans from a fixed position while the paper moves past and any type of speck on the strip of scan glass will turn up as a line on the print out.  But when scanning using the flat bed, the laser scanner moves over non moving paper and any specks on the glass turn up just as that, a speck and will not result in a print line up and down the paper.  So, absolute care must be taken when cleaning the narrow scan glass strip. 

Answer 1

To get your issue more exposure I would suggest posting it in the commercial forums since this is a commercial product. You can do this at Commercial Forums.
I hope this helps!
R a i n b o w 7000I work on behalf of HP
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