Brother HL 1240 - B/W Laser Printer Service Manual page 298

    4.
Remove the drum unit assembly. Pull any jammed paper up and out of the printer.
Do not remove the drum unit assembly with additional force at this time if you
cannot remove it easily. Instead, pull the edge of the jammed paper from the paper
cassette.
Fig. 4-7 Remove the drum unit assembly
Fig. 4-8 Pull the jammed paper
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