31Some of the more common errormessages appear below. Foradditional error messages, seeìError Messagesî underìTroubleshootingî in your on-lineUserís Guide.XXX TONER SENSOR ERRORAppears on the second line of thedisplay to indicate that the lever forthe toner cartridge color indicatedis not pushed all the way back.What to DoOpen the cover. Push the lock levertoward the back of the printer asfar as it will go. Close the cover. Ifthis does not clear the message,call your local service dealer.XXX TONER LOWAppears on the second line of thedisplay to indicate that color xxxtoner cartridge is getting low.Note: If you have changed theLOW TONER item in theSYSTEM CONFIG MENU toSTOP, the ATTENTION lightwill blink and you musteither replace the tonercartridge immediately orpress the ON LINE button tocontinue printing.What to DoBe sure you have a replacementtoner cartridge (see page 2) onhand.INSTALL NEW TONERnnn: XXXX TONER EMPTYThe toner cartridge indicated (xxx)has run out of toner.What to DoReplace the toner cartridge.XXXX DRUM NEAR LIFEAppears on the second line of thedisplay to indicate that color xxxx(e.g, black) image drum needs tobe replaced.What to DoReplace the xxxx image drum. (Seethe instructions supplied with thenew image drum.)INSTALL ADDITIONAL MEMORY420: MEMORY OVERFLOWThe amount of data in the file beingprinted has exceeded the printerísmemory.What to Doï Reduce the size of the file beingprinted (e.g., print the file asseparate groups of pages insteadof all the pages at one time).ï Install additional memory in theprinter (see your on-line UserísGuide for more information).Error Messages