Lexmark C720 User's Guide - Page 64

The printer continues to display the Supplies status message until you replace the required supply items. After the Supplies status message appears, the printer continues to monitor the required supply items until the supply is exhausted. The printer displays Low, Empty, Item Exhausted, Item Empty, Item Full or Missing. To prevent damage to your printer or its components, some supply items do not allow 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 toner cartridges Your printer monitors the toner level of your toner cartridges. When the toner in your toner cartridge is getting low, the printer displays 88 Toner Low. This message indicates it is time for you to replace one or more specified toner cartridges. Press Go to clear the attendance message. The Supplies status message appears on the second line of the display to remind you there are supplies that need attention. Open the Supplies Menu to see which toner cartridge is low. The printer continues to display the Supplies message until you replace the toner cartridge or until it is empty. When the life of the toner cartridge has expired, the printer display alternates between the 88 Toner Empty and Open Door Replace messages. You must replace the toner cartridge to continue printing. If you install new toner cartridges before the 88 Toner Empty message appeared, you must manually reset the toner cartridge counter. For more information, see Reset the toner cartridge counter. Use the following steps or the instruction sheet supplied with the toner cartridge to replace toner cartridges. 1 Pull the front door release latch toward the front of the printer. 64