Introduction_ 19Understanding the LEDThe color of the LEDs indicates the machine's current status.LED Status Description(TonerLED)Orange Blinking • Small amount of toner is left in thecartridge. The estimated cartridge lifeaa. Estimated cartridge life means the expected or estimated toner cartridgelife, which indicates the average capacity of print-outs and is designedpursuant to ISO/IEC 19752. The number of pages may be affected byoperating environment, printing interval, graphics, media type and mediasize. Some amount of toner may remain in the cartridge even when redLED is on and the printer stops printing.of toner is close. Prepare a newcartridge for replacement. You maytemporarily increase the printingquality by redistributing the toner. (See"Redistributing toner" on page 44.)On • A toner cartridge has almost reachedits estimated cartridge lifea. It isrecommended to replace the tonercartridge. (See "Replacing the tonercartridge" on page 53.)Off • All Toner cartridges is at normalcapacity.(StatusLED)Off • The machine is off-line.Green Blinking • When the LED slowly bilnks, themachine is receiving data from thecomputer.• When the LED rapidly blinks, themachine is printing data.On • The machine is on-line and can beused.Red Blinking • A minor error has occurred and themachine is waiting for the error to becleared. When the problem is cleared,the machine resumes.On • The cover is opened. Close the cover.• There is no paper in the tray. Loadpaper in the tray. (See"Loading paperin the tray" on page 27.)• The machine has stopped due to amajor error.Orange On • A paper jam has occurred.(See "Clearing paper jams" onpage 45.)Samsung does not recommend using non-genuine Samsung tonercartridge such as refilled or remanufactured. Samsung cannotguarantee non-genuine Samsung toner cartridge's quality. Service orrepair required as a result of using non-genuine Samsung tonercartridges will not be covered under the machine warranty.You also can resolve the error with the guideline from the computers’sSamsung Printer Status or Smart Panel program window. If theproblem persists, call for service.Turning on the machine1. Plug in the power cord.2. Press (power button) on the control panel.