Lexmark X940e Owners Manual
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Repair information4-49 7510 Go Back Previous Next Waste toner cartridge cover removal 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Lower the waste toner cartridge cover (A) to its lower-most position. 3. Remove the waste toner cartridge. 4. Remove the front left cover. See “Front left cover removal” on page 4-9. 5. Remove the C-clip securing the waste toner cartridge cover (A) to the machine. 6. Move the waste toner cartridge cover (A) to the left. 7. Remove the waste toner cartridge cover (A). Waste toner cartridge sensor assembly removal 1. Remove the front left cover. See “Front left cover removal” on page 4-9. 2. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 3. Remove the screw securing the bracket (A) to the machine. 4. Remove the bracket (A). Note: When removing the waste toner cartridge sensor assembly (B), ensure the plastic bosses are not broken off when they insert into the brackets. Note: If removing the developer units, the waste toner cartridge sensor assembly (B) does not need to be removed from the machine. It may be allowed to gently hang by the harness. 5. Remove the harness from the clamps. 6. Disconnect the connector from the waste toner cartridge sensor assembly (B). A C-clip
4-50Service Manual 7510 Go Back Previous Next 7. Remove the waste toner cartridge sensor assembly (B). Sensor (waste toner cartridge full) removal 1. Remove the front left cover. See “Front left cover removal” on page 4-9. 2. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 3. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 4. Disconnect the connector from the sensor (waste toner cartridge full) (A). 5. Release the hooks securing the sensor (waste toner cartridge full) (A) to the assembly. 6. Remove the sensor (waste toner cartridge full) (A). A B B Connectors
Repair information4-51 7510 Go Back Previous Next Connectors A
4-52Service Manual 7510 Go Back Previous Next Switch (waste toner cartridge interlock) removal 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Release the hooks securing the switch (waste toner cartridge interlock) (A) to the assembly. 6. Remove the switch (waste toner cartridge interlock) (A). A Connectors
Repair information4-53 7510 Go Back Previous Next Inner cover removal 1. Open the printer front door assembly. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Remove the toner waste cartridge. 6. Press the button and raise the transfer belt lift latch assembly (A) to its upper-most position. 7. Move the transfer belt lift handle (B) to the lower-most position. Warning: Ensure that all four PC cartridges are concealed from all sources of light, or damage will occur. 8. Remove the four PC cartridge units. Note: After removing the four PC cartridges, ensure that each cartridge is marked according to its particular color. 9. Remove the four screws securing the inner cover (C) to the machine. 10. Remove the inner cover (C). A B Button C
4-54Service Manual 7510 Go Back Previous Next Waste toner agitator motor assembly removal 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Remove the inner cover. See “Inner cover removal” on page 4-53. 6. Disconnect the connector from the waste toner agitator motor assembly (A). 7. Remove the two screws securing the waste toner agitator motor assembly (A) to the machine. 8. Remove the waste toner agitator motor assembly (A). PC cartridge unit removal Note: The following procedure applies to the C, M, Y, and K PC cartridge units. Warning: When removing or installing the PC cartridge units, do not touch the drum surfaces, or damage will occur. Warning: When removing the PC cartridge units, ensure that the drum surfaces are not exposed to any sources of light, or damage will occur. 1. Open the printer front door. 2. Press the button, and raise the transfer belt lift latch assembly (A) to its upper-most position. 3. Lower the transfer belt lift handle (B) to its lower-most position. 4. Gently pull the appropriate PC cartridge assembly (B) out of the machine. Warning: When placing the PC cartridge units on a level surface, ensure that no part of the OPC drum or any roller comes into contact with the resting surface. AConnector
Repair information4-55 7510 Go Back Previous Next Replacement warning: Ensure that all PC cartridge units are properly seated and aligned before raising the transfer belt lift handle to its upper-most position, or damage will occur. Never force the transfer belt lift handle into its home position, or damage will occur. Image density sensor assembly removal 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Remove the inner cover. See “Inner cover removal” on page 4-53. 6. Remove the waste toner agitator motor assembly. See “Waste toner agitator motor assembly removal” on page 4-54. 7. Remove the screw securing the harness access cover (A) to the machine. A B Button
4-56Service Manual 7510 Go Back Previous Next Warning: Note the orientation of the harnesses to ensure they are not pinched when replacing the harness access cover (A), or damage will occur. 8. Remove the harness access cover (A) from the machine. 9. Disconnect the three connectors from the image density sensor assembly (B). 10. Release the harnesses from the clamps. 11. Remove the screw securing the image density sensor assembly (B) to the machine. Note: Ensure the transfer belt lift handle is in its lower-most position before removing the image density sensor assembly (B). A Connectors B Connectors Clamps
Repair information4-57 7510 Go Back Previous Next 12. Remove the image density sensor assembly (A). Replacement note: Requires color calibration adjustments. Replacement warning: When replacing the harness access cover, ensure that the harnesses are not pinched, or damage will occur. CMY toner add assembly removal 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Remove the inner cover. See “Inner cover removal” on page 4-53. 6. Remove the screw securing the appropriate CMY toner add assembly (A) to the machine. Warning: Pull the appropriate shutters to reduce toner spillage into the machine. Warning: The C, M, and Y toner add assemblies must be removed in this order: Y, M, C, or damage will occur. B
4-58Service Manual 7510 Go Back Previous Next 7. Remove the appropriate CMY toner add assemblies (A). K toner add assembly removal Warning: Ensure the three CMY toner add assemblies are removed before removing the K toner add assembly, or damage will occur. 1. Remove the printer front door assembly. See “Printer front door assembly removal” on page 4-3. 2. Remove the front left cover. See “Front left cover removal” on page 4-9. 3. Remove the waste toner cartridge cover. See “Waste toner cartridge cover removal” on page 4-49. 4. Remove the waste toner cartridge sensor assembly. See “Waste toner cartridge sensor assembly removal” on page 4-49. 5. Remove the inner cover. See “Inner cover removal” on page 4-53. 6. Remove the three CMY toner add assemblies. See “CMY toner add assembly removal” on page 4-57. 7. Remove the screw securing the K toner add assembly (A) to the machine. Warning: Pull the shutter to reduce toner spillage into the machine. 8. Remove the K toner add assembly (A). A Shutter