Interior

 
MF8580Cdw / MF8550Cdn / MF8540Cdn
 
MF8280Cw / MF8230Cn

Toner cartridge tray

Install the toner cartridges. Load the Y (yellow), M (magenta), C (cyan), and K (black) toner cartridges in the slots from the rear to the front respectively. How to Replace Toner Cartridges
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