Exit roller 1 Remove all covers, the RFI shield, and the printer door. 2 Pry in the tab at the lower end of the left exit roller bushing and pull it inward. 3 Release the exit roller by rotating the tab up. Figure 39. Exit roller removal 4 EN www.GovTechMedia.com Remove the exit roller by lifting up the left end; the right end follows easily.
Delivery assembly 1 Remove all covers, the RFI shield, the printer door, and the exit roller. 2 Remove the cartridge guide by pressing in the tab (callout 1) and sliding the guide toward the front of the HP LaserJet 3100/3150 product (callout 2). 2 2 1 Figure 40. Delivery assembly removal (1 of 2) 112 Removal and replacement www.GovTechMedia.
Use the magnetic screwdriver to remove the two (2) screws (callout 1). 2 1 Figure 41. Delivery assembly removal (2 of 2) 4 Note EN www.GovTechMedia.com Rotate the rear of the delivery assembly up and forward and lift it out of the printer. Upon reinstallation, the tabs on the front end of the delivery assembly must fit under the sheet metal fuser plate below to correctly reseat the delivery assembly.
Fuser pressure plate 1 Remove all covers, the RFI shield, the printer door, the exit roller, and the delivery assembly. 2 Remove the two (2) screws (callout 1). 3 Press the fuser plate retainer clips out (callout 2) to release the pressure plate. 4 Rotate the plate around and toward the back (callout 3) and lift up to remove it. 2 2 3 2 1 Figure 42. Fuser pressure plate removal 114 Removal and replacement www.GovTechMedia.
To reinstall The fuser pressure plate is held in place by four locking mechanisms in each corner. Place the rear slits in the plate over the rear brackets that hold the fusing assembly (callout 1). Lower the plate over the retaining clips, pressing on both sides of the fuser pressure plate (callout 2). It is important that the spring is placed over the positioning pin (callout 3) because inadequate pressure will cause fusing problems. Replace the screws. Figure 43. Fuser pressure plate replacement EN www.
Front casing Note 1 Remove all covers, the RFI shield, and the printer door. 2 Remove the two (2) screws (callout 1) from the right hinge holder. The lower screw on each of the hinge holders secures a small metal grounding plate. Upon reinstallation, make sure the grounding plates are in the correct position. 2 1 Figure 44. Front casing removal 3 Lift the right hinge holder from the frame. 4 Repeat the procedure to remove the left hinge holder.
Heating element 1 Remove all covers, the RFI shield, the printer door, the exit roller, the delivery assembly, the fuser pressure plate, and the front casing. 2 Disconnect the AC voltage to the heating element by releasing the connector located on the ECU. Press down on the connector release with the small flatblade screwdriver (callout 1). (Because this is a small space, it is much easier to reach the connector with a screwdriver.) Pull the connector straight out (callout 2). 2 1 2 Figure 45.
4 Disconnect the thermistor feedback connector (callout 1) in the left, front side of the fusing assembly. 2 1 Figure 46. Heating element removal (2 of 2) 5 Lift the heating element out. To reinstall Make sure the connectors are properly reattached and that the thermistor feedback cable is routed behind the face-up/face-down lever. 118 Removal and replacement www.GovTechMedia.
Pressure roller 1 Remove all covers, the RFI shield, the printer door, the exit roller, the delivery assembly, the fuser pressure plate, the front casing, and the heating element. 2 Remove the pressure roller guide by lifting the edge (callout 1) and then rolling it gently backward (callout 2). 2 1 2 Figure 47. Pressure roller guide removal 3 Note The right end of the pressure roller is greased. 4 Note EN www.GovTechMedia.
Face-up/face-down lever 1 Remove all covers, the RFI shield, the printer door, the exit roller, the delivery assembly, the fuser pressure plate, the front casing, the heating element, and the pressure roller. 2 Rotate the lever forward 90 degrees (past the spring) and pull it straight out the front of the printer. To reinstall 1 Make sure the lever arm is on the left and is initially pointing downward. 2 Pull the spring forward using needlenose pliers.
Fuser exit roller assembly 1 Remove all covers, the RFI shield, the printer door, the exit roller, the delivery assembly, the fuser pressure plate, the front casing, the heating element, the pressure roller, and the face-up/facedown lever. 2 Remove the gear from the left end of the roller shaft by pressing down on the catching mechanism with the small flatblade screwdriver and pulling the gear away.