Samsung CLP 500N - Manual (Page 128)

M AINTAINING Y OUR P RINTER 6.10
7 Make sure that the color of the toner cartridge matches the
color slot and then slide the new toner cartridge into the
printer. Using both hands, grip the cartridge to insert into
the slot. Then hold the handle to slide the cartridge in.
•When the toner cartridges are correctly installed the yellow
and black cartridges are not fully inserted. These will be
pushed into place when you close the left cover.
8 Close the left cover. Make sure that the cover is securely
latched, and then turn the printer on.
If you have installed the toner cartridges wrongly, the left
cover will not close properly. Check again to make sure the
cartridge colors correspond to those marked on the right
hand side. Never use force to close the cover.