943. MaintenanceAvailable maintenance partsTo purchase maintenance parts, contact the source where you bought the machine. Replacing maintenance parts can be performed only byan authorized service provider, dealer, or the retailer where you bought the machine. The warranty does not cover the replacement of anymaintenance parts once it has reached its “Average yield”.Maintenance parts are replaced at specific intervals to avoid print quality and paper feed problems resulting from worn parts, see table below.The purpose of which is to maintain your machine in top working condition. The maintenance parts below should be replaced when the lifespan of each item has been met.parts Average yield aa. It will be affected by the operating system used, computing performance, application software, connecting method, media ,media size and job complexity.Document feeder rubber pad Approx. 20,000 pagesTransfer roller Approx. 100,000 pagesFuser unit Approx. 90,000 pagesPickup roller Approx. 90,000 pagesRetard roller Approx. 60,000 pages
