HP laserjet 3390, 3392 all-in-one Service Manual

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8.
Close the rear output bin, and then open the duplex-path door on the back of the all-in-one.
Figure 6-28
  Jams in the duplex path (8 of 10)
9.
With both hands, grasp the portion of the media that is the most visible (this includes the middle),
and carefully pull it free from the all-in-one.
Figure 6-29
  Jams in the duplex path (9 of 10)
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Chapter 6   Troubleshooting
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