hp Color 9850mfp PROCESS UNIT 4.6 brush unit Replacing the belt cleaning A. Periodically replaced parts/cycle • Belt cleaning brush unit: Every 600,000 copies B. Procedure 1. Remove the transfer belt unit. (See " 4.5 Remov- ing and reinstalling the transfer belt unit.") 2. Remove 2 screws [2] while holding the belt cleaning unit [1] by hand, and then remove the belt cleaning unit. [2] [2] 3. Replace the belt cleaning brush unit with a new one. 4. Reinstall the above parts following the removal steps in reverse. Note: [1] • The belt cleaning unit is made up of the belt cleaning brush unit and the parts listed below.
III DIS./ASSEMBLY (For details of these parts, see " 4.7 Replacing the belt cleaning blade " and " 4.8 Replacing Belt cleaning blade : 1 piece the toner collection sheet /1 .") Blade spring : 2 pieces [3] Stop ring : 2 pieces Blade fulcrum shaft : 1 piece Toner collection sheet 1 : 1 piece Toner collection sheet 2 : 1 piece Screw : 3 pieces • Before installing the belt cleaning unit, apply the setting powder on the portion [3] on the transfer belt. • When reinstalling it, set the guide sections provided on both sides below the belt clean- ing unit to the pins of the transfer belt unit, and then attach the screws. 3-37