Understanding display messages 964. Troubleshooting• Replace IMG. unit• Replace with new imaging unitThe indicated imaging unit has almostreached its estimated imaging unit life.Estimated imaging unit life meansthe expected or estimatedimaging unit, which indicates theaverage capacity of print-outs andis designed pursuant to ISO/IEC 19752. The number of pagesmay be affected by thepercentage of image area,operating environment, printinginterval, media type and mediasize. Some amount of toner mayremain in the cartridge even whenred LED is turns on and the printerstops printing.• You can choose Stop or Continue as shown on thecontrol panel. If you select Stop, the printer stopsprinting and you cannot print any more withoutchanging the imaging unit. If you select Continue,the printer keeps printing but the printing qualitycannot be guaranteed.Replace the imaging unit for the best print qualitywhen this message appears. Using a imaging unitbeyond this stage can result in printing qualityissues (see "Replacing the imaging unit" on page 63).Samsung does not recommend using non-genuine Samsung imaging unit such asrefilled or remanufactured. Samsung cannotguarantee non-genuine Samsung tonercartridge's quality. Service or repair requiredas a result of using non-genuine Samsungimaging unit will not be covered under themachine warranty.• If the machine stops printing, replace the imagingunit (see "Replacing the imaging unit" on page 63).Message Meaning Suggested solutions
