Lexmark C760 Service Manual
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Repair information4-25 5060-4xx 13.Disconnect the spring clip (J) from the pick arm. Be sure not to let the spring come off of the lower frame. Also identify which pegs the spring clip is sitting on. These pegs are typically marked with white paint. 14.Leaving the pick arm down, lift the pick assembly and slide it toward the back of the machine and drop it through the holes located next to the brackets.
4-26Service Manual 5060-4 xx 15.Put the new pick assembly into the printer. Make sure the pick motor connector is placed through the holes before you insert the brackets. Make sure the boss (K) on the pick arm is on top of the bellcrank so it can raise and lower the arm. 16.Lift the pick assembly to insert the brackets up through the appropriate openings. Once the pick assembly brackets are through their openings, slide the assembly toward the front of the machine until the half moon on the bracket is against the locator pin (L). L
Repair information4-27 5060-4xx 17.Reattach the spring clip to the pick arm. Make sure the pick arm rotates freely from top to bottom in the machine. 18.Once the pick assembly is in place, put the four screws for the pick assembly back into place. Placing the front side screw in first makes it easier to put in the rest of the screws. When starting the front screw, push the pick assembly towards the front of the printer. 19.Reconnect the connectors. 20.Reattach the paper lever sensor (three screws). 21.Position the mylar piece using two screws or one cable tie. When you place the mylar piece, make sure you place it back under the metal bar (M) under the inner deflector. if a cable tie is used to secure the mylar piece, make sure that the blue cable running under the mylar piece is retained by the cable tie. M
4-28Service Manual 5060-4 xx BOR drive assembly See “Motor assembly, Lift/BOR” on page 7-27 for part numbers. 1.Open the front cover. 2.Remove the yellow toner cartridge. 3.Remove the front right light shield cover. See “Front right light shield” on page 4-34. 4.Remove the BOR housing assembly screw (A) type “323” on page 4-3 and remove the assembly. Note: Gear (B) can easily fall from the assembly. Be careful not to drop the gear.
Repair information4-29 5060-4xx Cartridge contact assembly Go to “Cartridge contact assembly” on page 7-28 for part numbers. Warning: Do not remove printheads. 1.Open the front cover. 2.Remove the toner cartridges. 3.Remove the ITU assembly. See “ITU assembly” on page 4-44. 4.Remove the top cover assembly. See “Top cover assembly” on page 4-6. 5.Remove the developer HVPS board. See “Developer HVPS board” on page 4-31. 6.Remove the cartridge rail front and rear mounting screws and remove the rail of selected cartridge assembly. 7.Press the cartridge contact assembly (yellow shown) retaining tabs (A) and remove the assembly. 8.Remove the screw (B) from the front of the printhead. 9.Remove the screws for the contact assembly you are removing.
4-30Service Manual 5060-4 xx Cartridge drive assembly Note: Drive assemblies must be removed in the following order until the desired assembly can be removed: Black Magenta Cyan Ye l l o w Go to “Cartridge drive assembly, cyan/magenta/black (one drive assembly per package)” on page 7-29 for part number. 1.Remove inner system board shield. See “Inner system board shield” on page 4-43 . 2.Remove the cartridge drive assembly mounting screws (A). Black is shown. 3.Disconnect the cable (B) from the cartridge drive assembly. 4.Remove the cartridge drive assembly.
Repair information4-31 5060-4xx Developer HVPS board Go to “Developer HVPS board” on page 7-34 for part numbers. 1.Remove inner system board shield. See “Inner system board shield” on page 4-43 . 2.Remove four top machine screws (A) type “323” on page 4-3 and four bottom screws (B) type “121” on page 4-2 from the developer HVPS board. 3.Remove all connectors (C) from the left board. C
4-32Service Manual 5060-4 xx 4.Remove connectors (D) from the right board. 5.Remove the developer HVPS boards. Note: If you have a one piece Developer HVPS board, you can ignore steps 5 and 6. 6.Reconnect the HVPS boards. Installation note: 1. Disconnect the cable between boards. Note: You have a one piece Developer HVPS board. 2.Install the large board by attaching the bottom screws loosely, attach the top screws, then tighten the bottom screws. 3.Connect the boards 4.Install the small board in the same manner as the large board. Note: When replacing the developer HVPS, whether one piece or two piece, verify the TMC switches are properly functioning by performing the Base Sensor Test for the black, cyan, yellow and magenta sensors. See “BASE SENSOR TEST” on page 3-30 . If a sensor fails the test, realign the developer HVPS boards and rerun the test. D
Repair information4-33 5060-4xx Friction buckler Go to “Friction buckler” on page 7-19 for part numbers 1.Press the multipurpose feeder (MPF) latch to disconnect the MPF. 2.Use needlenose pliers to remove the buckler housing (A). 3.Replace the friction buckler (B).
4-34Service Manual 5060-4 xx Front right light shield Go to “Front right light shield cover” on page 7-3 for part numbers 1.Open the top cover. 2.Remove the front right light shield screws (A) and (B). 3.Unlatch the alignment stud (C).