TA Triumph-Adler CLP 4416 - Manual (Page 122)

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Maintenance
+ Push down on the top of the toner container to install it firmly in place.
+ Pull the blue lock lever on the toner container back towards the locked symbol as far as it will go.
+ Use the same procedure to replace the other color toner containers.
+ Close the top cover.
Replacing the Waste Toner Box
Replace the waste toner box when the Check waste toner box message is displayed. A new waste toner
box is included with the toner kit. The printer will not operate without replacing the waste toner box.
Lock Lever