Canon Satera LBP-3910 User Manual page 65

10
If a paper jam occurs when performing 2-sided printing,
perform the following procedure.
If you are not performing 2-sided printing, proceed to the next step.
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64
Raise the black transport guide a, then remove any jammed paper b.
b
CAUTION
Do not take your hands off the transport guide. The transport guide may
snap back to its original position, and this may result in personal injury.
a