Lexmark Optra C710 User's Guide - Page 135

Warning! If you are installing the black print cartridge, make sure you install the coating roll when you replace the print cartridge. To prevent damage to your printer or its components, some supply items will not permit the printer to operate when the item is exhausted. When this occurs, you must install the appropriate new supplies before you can continue printing. Replacing print cartridges UTILITIES MENU CHANGE TONER 1 Menu 2 Select 3 Return 4 Your printer monitors the toner level and life of your print cartridges. When the toner in your print cartridge is getting low, the printer will display 88 Color Low on the printer display under the Supplies Menu. This message indicates it is time for you to replace one or more specified print cartridges. To replace one or more cartridges: 1 Press and release Menu> or or