HP Color 9850mfp Service Manual - Page 520

Q3224A 1 (9) Remove the four hexagon socket head bolts to remove the upper knife. Caution 1: Remove the upper knife holding the two handles. Caution 2: Take care not to drop the upper knife or chip the knife by hitting a solid component. Hexagon socket head bolts Handles 1 (11) Remove the four hexagon socket head bolts to remove the lower knife. Caution 1: Remove the lower knife holding the fitting at the front and the corner at the back. Caution 2: Take care not to drop the lower knife or chip the knife by hitting a solid component. Caution 3: To install the lower knife, insert it with its holes aligned with the four guide pins. Lower knife Rear side corner 3 DIS./ASSEMBLY Upper knife 1 (10) Turn down the conveyance guide plate. Then, insert a small shaft such as a screw (longer than M4 x 16) into the stopper hole to prevent the guide plate from returning to the original position. Caution: Do not touch the three screws that should not be removed. Screws that should not be removed Fitting Hexagon socket head bolts Stopper screw Conveyance guide plate Stopper hole Guide pins 1 (12) Reinstall the above parts following the removal steps in reverse. 3-2