Sharp MX-M4070 User Manual - Page 200

BEFORE USING THE MACHINE►MAINTENANCE REPLACEMENT OF TONER CARTRIDGE Always replace the toner cartridge after the "Change the toner cartridge." message appears. You should keep one set of replacement toner cartridges on hand so that you can replace a toner cartridge immediately when toner runs out. Replacement message Toner Low (Do not replace cartridge until requested) When this message appears, prepare a toner cartridge for replacement. If you continue printing, the following message appears. When this message appears, prepare a toner cartridge for replacement and replace it. In this state, printing is possible. However, this message does not appear during printing. Change the toner cartridge. OK Ready to scan for copy. (Change the toner cartridge.) If you continue to use the machine, the following message will appear when the toner runs out. Once the machine enters this status, printing cannot be carried out until the toner cartridge is replaced. Change the toner cartridge. 1-197