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3. Changing the X rollers
The estimated life of a set of rollers is about 500 working hours. To change rollers,
simply remove the hex bolts using a size 3 Allen key as shown below.
Notice that the roller has a wider side and a narrower side. The narrower side should be
closer to the pen carriage.
When installing the new rollers, make sure that we push the roller set towards the pen carriage
so that it is positioned against the lens carriage and then tighten the bolts.
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