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09-20-2012 10:05 PM
You may want to see if there is any obvious packaging tapes or foreign debris (debris from first paper jam) in the paper path & if so clear them. You may also want to verify if the cleanout (or duplexor) is fitted properly. Another thing you may consider is to try other paper brands & see if that helps.
If not, since this is bought recently & I suppose covered by warranty, I'd suggest you've it return to HP for further support & help.
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