Installation & Maintenance Instruction
CET Group Co., Ltd. www.cetgroupco.com
48. Clean the black conductive saddle with a cotton swab, then apply a small amount of
conductive grease into it.
49. Reinstall the saddles and the gear onto the new PCR and PCR cleaning roller.
Wear clean disposable gloves or do not touch the PCR working surface with bare
hands.
50. Reinstall the PCR and the PCR cleaning roller into the holder.
51. Make sure the PCR is moveable and spring loaded.
52. Reinstall the PCR assembly into the drum unit and insert two screws to secure it.
53. Remove the springs and the plastic arms from the old lube bar.
54. Take out the new CET lube bar.
55. The lube bar for the black drum unit and the lube bar for the color drum unit have
different thicknesses (black is thicker).
56. Reinstall the plastic end hubs from the old lube bar onto the new one. You can use a
flat bit screwdriver to remove them from the old lube bar.
57. Reinstall the plastic arms.
58. Attach the tension springs to the plastic arms.
59. Set the proper lube bar springs’ tension by adjusting the clip that links the two springs
together.
60. The OEM recommends higher tension for MP C3003, 3004, 3503, 3504, 4503, 4504.
61. The OEM recommends lower tension for MP C5503, 5504, 6003, 6004.
62. To improve the drum unit performance and life, you may further reduce the tension
by adding a paper clip. Add the paper clip to the smaller end of the clip that holds the
springs together.
63. Reinstall the lube bar assembly into the drum unit.
64. Make sure the latches are securely fixed.
65. Secure the lube bar assembly with two screws.
66. Take out the new CET OPC drum. Leave the protective wrap on it.
67. Remove the retaining ring from the drum axle using a retaining ring pliers.
68. Pull the drum axle from the old OPC drum.
69. Insert the drum axle into the new OPC drum from the non-gear side.
70. Reinstall the retaining ring onto the drum axle using a retaining ring pliers.
71. Remove the protective wrap, then place the OPC drum into the drum unit.
72. Align the notches on the drum unit with the corresponding tabs on the developer
unit.
73. Carefully connect the drum unit and the developer unit sections together.
74. Reinstall the front OPC drum support hub and secure it with two screws.
75. Arrange the toner sensor wires.
76. Reinstall the three white gears and using the needle nose pliers reinstall the clip.
77. Reinstall the rear OPC drum support hub and secure it with three screws.
78. Reinstall the two black gears and each of their clips.
79. Reinstall the rear PCDU cover and secure it with a screw.
80. Make sure the OPC drum rotates smoothly.
81. For correct operation of the rebuilt drum unit, reset the corresponding PM counters
by SP3-701 or by selecting [PM Counter / New Unit Set] from the menu.
82. To find the components used in this video please visit our web site
www.cetgroupco.com
