7.7 <Troubleshooting>Understanding display messagesMessages appear on the Smart Panel program window or on the controlpanel display to indicate machine status or errors. Refer to the tablesbelow to understand the messages meaning to correct the problem, ifnecessary.NoteWhen you call for service, it is very convenient to provide theservice representative with the contents of the display message.Status display Explanation SolutionOPEN The covers is notcompletely closed.Press the covers until itclicks.LED blinksThere is a problemin the machine.Unplug the power cordand plug it back in. If theproblem persists, contactthe servicerepresentatives.LED blinks There is no paper inthe tray.Load paper in the tray.(Page 4.5)LED blinksIn the paper feedarea and rear themachine.Clear the jam. (Page 7.1)Rear and Inside themachine.Clear the jam. (Page 7.3)In the exit area. Clear the jam. (Page 7.5)LED blinksslowlyThe correspondingtoner cartridge isalmost empty.Take out thecorresponding tonercartridge and thoroughlyshake it. By doing this,you can temporarilyreestablish printingoperations. (Page 6.3)LED blinksrapidlyReplace the toner cartridge with a new one. (Page6.5)The toner cartridgeis installedimproperly, or notinstalled.Reinstall the tonercartridge two or threetimes. If the problempersists, the tonercartridge is not beingdetected. Please contactthe servicerepresentatives. (Page6.5)T1 The toner cartridgewhich the arrowindicates is notsuitable for yourmachine.Install the a Samsung-genuine toner cartridgedesigned for yourmachine.T2 The lifespan of thetoner cartridgewhich the arrowindicates is reached.This message appearswhen the toner iscompletely empty, andyour machine stopsprinting. Replace thecorresponding tonercartridge with a Samsung-genuine cartridge.(Page 6.5)T3 The toner cartridgewhich the arrowindicates is not aSamsung-genuinecartridge.Replace thecorresponding tonercartridge with a Samsung-genuine cartridge.(Page 6.5)Status display Explanation Solution