Samsung SCX-5639FR User Manual (user Manual) (ver.1.01) (English) - Page 94

Available maintenance parts 3. Maintenance 94 To purchase maintenance parts, contact the source where you bought the machine. Replacing maintenance parts can be performed only by an authorized service provider, dealer, or the retailer where you bought the machine. The warranty does not cover the replacement of any maintenance 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 life span of each item has been met. parts Average yielda Document feeder rubber pad Approx. 20,000 pages Transfer roller Approx. 100,000 pages Fuser unit Approx. 90,000 pages Pickup roller Approx. 90,000 pages Retard roller Approx. 60,000 pages a. It will be affected by the operating system used, computing performance, application software, connecting method, media , media size and job complexity.