Lexmark C522 - Manual (Page 82)

Replacing the toner cartridges
82
Maintaining the printer
To replace a toner cartridge, see the Replacing a toner cartridge sheet that comes with a replacement cartridge.
Once the toner cartridge is replaced, follow the instructions located in the new toner cartridge box to recycle the used toner
cartridge.
When you return a used toner cartridge, you contribute to a worldwide recycling effort at no cost to you.
For best results, use Lexmark supplies with the printer. Damage caused to the printer by use of third-party supplies is not
covered under your Lexmark printer warranty.
M Magenta
K Black