Canon LBP-5100 User Manual page 448

7
When installing the printer unit on the paper feeder, gently set
it down so that each surface of the printer unit is flush with
the front or side surfaces of the paper feeder.
Also, match the positioning pins (A) and connector (B) when setting the printer
unit.
IMPORTANT
If the printer unit cannot be placed on the paper feeder properly, lift the printer unit
once, hold it horizontally, and place it again. If you try to set the printer unit
forcefully without lifting it, the connector and positioning pins may be broken.
(A)
(B)
(A)
Paper Feeder 8-13
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