Lexmark T420 User Reference page 32

Jams behind the rear output bin door
This jam occurs when print media less than 152.4 mm (6 in.) in length has attempted to exit to the
standard output bin.
1
Open the rear output bin door.
2
Gently remove the jam.
If the print media resists, stop pulling. Remove the print cartridge, and then pull the jam out.
Note: If you cannot find the jam inside the printer, check to see if the print job has exited
to the standard output bin.
3
Leave the rear output bin door open to finish printing any additional pages less than 152.4 mm
(6 in.) in length. Also, set the Paper Length to Short.
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