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- HP Community
- Printers
- Printer Paper Jams & Feed Issues
- Paper jam in duplex mode - only once a day

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09-11-2022 04:14 PM
My HP LaserJet printer has recently shown a bizarre nuisance behavior in one circumstance.
Has this been seen by anyone in the greater HP community?
Only *once* in a day, *only* on the first duplex/two-sided print, and *only* of the first sheet of paper, there is a failure.
The first sheet of paper is printing the backside.
As it exits the fuser and travels up the printer back interior, the leading edge of the paper finds its path blocked at the very top of the box where the duplex flapper meets the output roller.
Movement continues until a sensor detects the obstruction to stop the motor.
Opening the rear door shows a perfectly wrinkled pattern (washboard) paper sheet which can be gently pulled from some rollers associated with the fuser area.
Power off, then on, restart the duplex job.
Everything functions as expected! And there are never any printing problems during that day even when the machine may be off for hours at a time.
The Service Page Event Log subsection printed from the machine menu shows many entries of Code 13.0916 (Paper jam).
With one-sided printing there has *never* been a jam.
In virtually all other modes and possible configurations, it is, and always has been, free of any flaws.
Model: HP LaserJet 402dn
Installed: February 2016
Total impressions: ~2000