10Replace the other three cartridges as well.

11Close the toner access cover.

Cleaning the Color Toner Density (CTD) Sensor

Clean the CTD sensor only when an alert for the CTD sensor is shown on the Status Monitor or operator panel.

1Ensure that the printer is turned off.

2Push the rear cover release handle and open the rear cover.

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Maintaining Your Printer

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Dell 1355cnw, 1355CN manual Cleaning the Color Toner Density CTD Sensor, 448