Lexmark CX310 User Manual page 146

Maintaining the printer
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Note: When replacing the black imaging kit, save the cyan, magenta, and yellow developer units. Dispose only
the black developer unit.
10
Gently shake the yellow, cyan, magenta, and black developer units side‑to‑side.
11
Remove the red packing strip and the attached fabric from the developer units.
12
Gently insert the yellow, cyan, magenta, and black developer units.
"Recycling Lexmark products" on page 132.
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