The waste toner container
is full or installed incorrectly. replace or reseat the waste toner container.
 Turn the printer off, then wait a few minutes
for the printer to cool.
 Open the front cover.
 Pull the waste toner container out of
the printer using its handle.
 Remove the containers cap from the left
side of the container as shown, and use it to close the waste toner container
opening.
 Take a new waste toner container out
of its package.
 Insert the new container into position
and then push it to make sure that it is firmly seated in place.
 Close the front cover firmly.
 Turn the printer on.
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