The DC controller notifies the formatter of an error if any of the following conditions exist:
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The memory tag fails to either read to or write from the DC controller
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The RD sensors detect a missing or incorrectly installed print cartridge.
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The accumulated print time reaches a specified time period or the cartridge runs out of toner.
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The toner level in any of the print cartridges drops below a certain level
Developing-roller engagement and disengagement
The product can print in full-color mode or in black-only mode. To print in black-only mode, the product
disengages the developing rollers in the cyan, magenta, and yellow print cartridges. This maximizes the
life of the cartridges.
Figure 5-22 Developing-roller engagement and disengagement control
Four developing units engaged
Only the Bk developing unit engaged
Four developing units disengaged
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ENWW Image-formation system 129
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