Samsung CLP 500N - Manual (Page 130)

M AINTAINING Y OUR P RINTER 6.12
3 Remove the container’s caps which are attached as shown
below and use them to close the waste toner container.
4 Take a new waste toner container out of the package.
5 Insert the lower of the new container into place and then
push it to make sure that it is seated in place.
6 Make sure that the lock lever latches the container.