Lexmark X940e Owners Manual
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Repair information4-79 7510 Go Back Previous Next Replacement warning: When reinstalling the printhead shutter motor assembly (A), ensure that the plastic arm is inserted into the printhead shutter (B). Switch (printer front door interlock) removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4. 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4 or “Rear cover assembly removal” on page 4-5. 4. Remove the connector form the switch (printer front door interlock) (A). 5. Release the hooks securing the switch (printer front door interlock) (A) to the machine. 6. Remove the switch (printer front door interlock) (A) from the machine. A B Connectors
4-80Service Manual 7510 Go Back Previous Next Sensor (printer left lower door interlock) removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6. 3. Remove the MPF feed unit assembly. See “MPF feed unit assembly removal” on page 4-8. 4. Release the hooks securing the sensor (printer left lower door interlock) (A) to the machine. 5. Remove the sensor (printer left lower interlock (A). 6. Disconnect the connector from the sensor (printer left lower door interlock) (A). RIP card cooling fan cover assembly removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 5. Disconnect the connector from the RIP card cooling fan cover assembly (A). 6. Remove the four screws securing the controller box top over assembly (A) to the machine. 7. Move the RIP card cooling fan cover assembly (A) toward the front of the machine.
Repair information4-81 7510 Go Back Previous Next 8. Remove the RIP card cooling fan cover assembly (A). Controller box assembly removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 5. Remove the controller box top cover assembly. See “RIP card cooling fan cover assembly removal” on page 4-80. 6. Remove the switch (main power). See “Switch (main power) removal” on page 4-82. 7. Loosen the screw securing the ground wire (A). 8. Remove the ground wire (A). 9. Disconnect the connector (B), and rotate it 90°. 10. Remove the connector (B). 11. Remove the four screws securing the controller box assembly (C) to the machine. Note: When lifting the controller box assembly (C), the bridge card assembly (D) and the upper printer engine card assembly (E) will become detached. 12. Lift the controller box assembly (C). Connector A A Connector A CB D
4-82Service Manual 7510 Go Back Previous Next Switch (main power) removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4. 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Detach the metal rod (A) from the switch (main power) (B). 5. Release the two hooks securing the switch (main power) (B) to the machine. 6. Remove the switch (main power) (B). 7. Disconnect the connector from the switch (main power) (B). 8. Disconnect the two large connectors from the switch (main power). Connector A Large connectors B
Repair information4-83 7510 Go Back Previous Next Bridge card assembly removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 5. Remove the controller box top cover assembly. See “RIP card cooling fan cover assembly removal” on page 4-80. 6. Remove the switch (main power). See “Switch (main power) removal” on page 4-82. 7. Remove the controller box assembly. See “Controller box assembly removal” on page 4-81. 8. Remove the three screws securing the bracket (A) to the controller box assembly (B). 9. Remove the bracket (A). 10. Remove the four screws securing the bridge card assembly (C) to the bracket (A). 11. Remove the bridge card assembly (C). Replacement warning: Ensure that the bridge card assembly (C) and the lower printer engine card (D) are connected. B A C C Connector D
4-84Service Manual 7510 Go Back Previous Next RIP card access cover removal 1. Using your finger, lift the RIP card access cover (A) by the notch. 2. Remove the RIP card access cover (A). RIP card assembly removal 1. Remove the two screws securing the RIP card assembly (A) to the machine. 2. Pull the two knurled thumb screws to remove the RIP card assembly (A) from the machine. 3. Remove the RIP card assembly (A) from the machine.
Repair information4-85 7510 Go Back Previous Next Fax interface card (modem) assembly removal 1. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 2. Remove the two screws securing the fax interface card (modem) assembly (A) to the assembly. 3. Disconnect the connectors from the fax interface card (modem) assembly (A). 4. Remove the fax interface card (modem) assembly (A). Hard drive removal 1. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. Warning: Do not drop the RIP card assembly, or damage will occur. 2. Remove the fax interface card (modem) assembly. See “Fax interface card (modem) assembly removal” on page 4-85. 3. Remove the two connectors from the hard drive (A). 4. Remove the four screws securing the hard drive (B) to the side of the RIP card assembly (A). 5. Remove the hard drive (B). Warning: Do not drop the hard drive, or damage will occur. A
4-86Service Manual 7510 Go Back Previous Next Interconnect card assembly removal Warning: In the event of replacement of any one of the following components: •RIP card assembly •Interconnect card assembly Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more of the components listed above without a POR after installing each one, or the printer will be rendered inoperable. Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a machine, it cannot be used in another machine. It must be returned to the manufacturer. 1. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. Warning: Do not drop the RIP card assembly, or damage will occur. 2. Gently pull the interconnect card assembly (A) from the RIP card assembly (B). 3. Remove the interconnect card assembly (A). A B
Repair information4-87 7510 Go Back Previous Next Upper printer engine card bracket assembly removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 5. Remove the controller box top cover assembly. See “RIP card cooling fan cover assembly removal” on page 4-80. 6. Remove the switch (main power). See “Switch (main power) removal” on page 4-82. 7. Remove the controller box assembly. See “Controller box assembly removal” on page 4-81. 8. Disconnect the thirteen connectors from the upper printer engine card assembly (A). 9. Release the harnesses from the clamps. 10. Remove the four screws securing the upper printer engine card bracket assembly (A) to the machine. Note: When removing the upper printer engine card bracket assembly (A), the upper printer engine card assembly (B) and the lower printer engine card assembly (C) will become detached. 11. Lift the upper printer engine card bracket assembly (A). 12. Remove the upper printer engine card bracket assembly (A).
4-88Service Manual 7510 Go Back Previous Next Replacement warning: Ensure that the upper printer engine card (B) assembly and the lower printer engine card assembly (C) are connected. Upper printer engine card assembly removal 1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5. 2. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4 3. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4. 4. Remove the RIP card assembly. See “RIP card assembly removal” on page 4-84. 5. Remove the controller box top cover assembly. See “RIP card cooling fan cover assembly removal” on page 4-80. 6. Remove the switch (main power). See “Switch (main power) removal” on page 4-82. 7. Remove the controller box assembly. See “Controller box assembly removal” on page 4-81. 8. Remove the upper printer engine card bracket assembly. See “Upper printer engine card bracket assembly removal” on page 4-87. 9. Remove the six screws securing the metal cover (A) to the upper printer engine card assembly (B). 10. Remove the metal cover (A). 11. Remove the five screws securing the upper printer engine card assembly (B) to the bracket (C). 12. Remove the upper printer engine card assembly (B). A CConnectorB WARNING When reinstalling the upper printer engine card assembly, ensure that the NVM board from the defective upper printer engine card assembly is installed on the replacement upper printer engine card assembly, or the machine will not function. Go to page 4-90.