Breakage Of The Boss Of The Idler Gear Due To Wrongly Assembled Pick-Up Roller - Canon imageRUNNER ADVANCE C3330 Series Troubleshooting Manual

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Breakage of the boss of the idler gear due to wrongly assembled
pick-up roller
[Symptom]
Boss of the idler gear [1] located between the pick-up roller shaft [2] and the feed roller shaft [3] in cassette pick-up assembly
may break.
[Cause]
When the paper cassette is pulled out and pushed in with the wrongly assembled pick-up roller, the paper cassette interferes
with the pick-up roller causing the pick-up roller to interfere with the idler gear, resulting in the above symptom.
[Service work]
When installing a pick-up roller, be sure that the pick-up roller shaft sticks out of the pick-up roller [a].
Fig. [A], the pick-up roller is properly installed.
Fig. [B], the pick-up roller is improperly installed. The two securing nails are not properly engaged [b].
[Note] Even when the two nails are not properly engaged, it may feel like the pick-up roller "clicks". This is because a part of the
securing nails clicks.
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