Dell S5840cdn User Manual page 38

Maintaining the printer
3
Remove the imaging kit.
4
Remove the toner cartridges.
5
Unpack the new imaging kit, and then remove the packing material.
Note: The imaging kit includes the imaging kit and the cyan, magenta, and yellow developer units.
6
Remove the black imaging unit.
Warning—Potential Damage: Do not expose the photoconductor unit to direct light for more than 10
minutes. Extended exposure to light may cause print quality problems.
Warning—Potential Damage: Do not touch the shiny photoconductor drum under the imaging unit.
Doing so may affect the quality of future print jobs.
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