Brother LX-900 Owner's Manual page 29

(4) Remove the film cartridge from the machine.
Note
Use scissors or
jammed film and remove the film cartridge, if
necessary.
(5) Remove the document from the film slit of the
cartridge.
Note
Do not pull the document from the opposite
side.
(6) Remove any excess laminating film by cutting
along the engraved "cutting line" on the
cartridge before reinserting the cartridge.
Note
Make sure that the shutter of the cartridge is
closed. If open, push the shutter button to close
the shutter.
(7) Set the film cartridge into the machine.
Note
Make sure that the film is set properly.
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button to extract the