Canon iR4570 Series Service Manual page 121

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5) Turn the developing assembly pressure lever [1] to
the left and release the pressure.
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6) Remove the one screw [1] and take out the dummy
drum [2].
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F-2-24
7) Remove the package of the drum unit, which is
provided with the product, and remove the two
drum pressure release blocks [1].
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- Do not touch the photosensitive drum surface.
- Do not expose the photosensitive drum surface to
light for a long period of time.
- Do not touch the rowel of the drum.
8) Mount the drum unit [1], which is provided with the
product, to the copier.
Chapter 2
2-11