Canon NP6251 Service Manual page 480

Step
10 Pull the toner bottle in the left upward
direction, and remove it upward.
11 Close the hopper cover.
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Work
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 9 INSTALLATION
Remarks
9-25