BY-PASS TRAY hp Color 9850mfp 7. BY-PASS TRAY 7.1 roller and the feed roller Replacing the paper feed A. Periodically replaced parts/cycle • Paper feed roller: Every 800,000 copies in actual replacement count • Feed roller: Every 125,000 copies in actual replacement count B. Procedure 1. Pull out the ADU. (See " 10.1 Removing and reinstalling the ADU .") 2. Remove 6 screws [1] and then remove the paper feed solenoid cover [2]. [1] III DIS./ASSEMBLY [1] [2] 3. Remove the stop ring [1]. [1] [2] 4. Remove the bearing [2] and then remove the paper feed roller unit [3]. [3] 3-68