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Lexmark X940e Owners Manual

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    							Repair information4-109
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    15. Remove the K developer clutch (D).
    AC drive card bracket assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Remove the developer / transfer roll HVPS card assembly. See “Developer / transfer roll HVPS card 
    assembly removal” on page 4-112.
    4. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
    5. Remove the 24V LVPS card bracket assembly. See “24V LVPS card bracket assembly removal” on 
    page 4-95.
    6. Remove the CMYK transfer HVPS card assembly. See “CMYK transfer HVPS card assembly removal” 
    on page 4-103.
    7. Remove four screws securing the AC drive card bracket assembly (A) to the machine.
    8. Disconnect the six connectors from the AC drive card bracket assembly (A).
    9. Remove the five faston connectors from the AC drive card bracket assembly (A).
    10. Remove the three screws securing the AC drive card bracket assembly (A) to the machine.
    11. Release the plastic retainer securing the AC drive card bracket assembly (A) to the machine. 
    						
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    12. Remove the AC drive card bracket assembly (A).
    Noise filter assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Remove the developer / transfer roll HVPS card assembly. See “Developer / transfer roll HVPS card 
    assembly removal” on page 4-112.
    4. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
    5. Remove the 24V LVPS card bracket assembly. See “24V LVPS card bracket assembly removal” on 
    page 4-95.
    6. Remove the CMYK transfer HVPS card assembly. See “CMYK transfer HVPS card assembly removal” 
    on page 4-103.
    7. Remove the AC drive card assembly. See “AC drive card bracket assembly removal” on page 4-109.
    8. Disconnect the heavy gauge connector from the circuit breaker.
    9. Remove the screw securing the noise filter assembly (A) to the machine.
    10. Release the two plastic retainers with needle nose pliers securing the noise filter assembly (A) to the 
    machine.  
    						
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    11. Remove the noise filter assembly (A).
    Rear upper cooling fan bracket assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Disconnect the connector from the rear upper cooling fan bracket assembly (A).
    3. Remove the two screws securing the upper cooling fan bracket assembly (A) to the machine.
    4. Remove the rear upper cooling fan bracket assembly (A).
    Rear upper cooling fan removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Disconnect the connector from the rear upper cooling fan (A).
    Connector 
    						
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    4. Remove the rear upper cooling fan (A) from the rear upper cooling fan bracket.
    Developer / transfer roll HVPS card assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Loosen the screw securing the ground wire (A) to the machine.
    4. Remove the ground wire (A).
    Warning:  The connector P572 and P502 are permanently attached to the developer / transfer roll HVPS 
    card assembly (B); do not attempt to remove these connectors, or damage will occur.
    5. Disconnect the five connectors from the developer / transfer roll HVPS card assembly (B).
    6. Remove the three screws securing the developer / transfer roll HVPS card assembly (B) to the machine.
    Note:  The developer / transfer roll HVPS card assembly (B) can be supported by the plastic support (C) by 
    attaching it to the hook on the machine.
    7. Lower the developer / transfer roll HVPS card assembly (B).
    8. Remove the connector from the developer / transfer roll HVPS card assembly (B).
    9. Release the harnesses from the clamps.
    10. Lift the right side of the developer / transfer roll HVPS card assembly up (B).
    ConnectorA 
    						
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    11. Remove the developer / transfer roll HVPS card assembly (B).
    Charge roll HVPS card assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Remove the developer / transfer roll HVPS card assembly. Go to “Developer / transfer roll HVPS card 
    assembly removal” on page 4-112.
    4. Remove the two screws securing the charge roll HVPS card assembly (A) to the assembly.
    5. Release the hooks securing the charge roll HVPS card assembly (A) to the assembly.
    Connectors
    A
    B
    C 
    						
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    6. Remove the charge roll HVPS card assembly (A). 
    MPF / transport drive motor assembly removal 
    1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    2. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly 
    removal” on page 4-111.
    3. Remove the developer / transfer roll HVPS card assembly. See “Developer / transfer roll HVPS card 
    assembly removal” on page 4-112.
    4. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
    5. Remove the 24V LVPS card bracket assembly. See “24V LVPS card bracket assembly removal” on 
    page 4-95.
    6. Remove the CMYK transfer HVPS card assembly. See “CMYK transfer HVPS card assembly removal” 
    on page 4-103.
    7. Disconnect the connector from the MPF transport drive motor assembly (A).
    8. Remove the three screws securing the MPF/transport drive motor assembly (A) to the machine.
    A
    Hooks 
    						
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    9. Remove the MPF/transport drive motor assembly (A).
    Feed roll removal 
    1. Remove the media tray. 
    2. Move the feed unit front guide (A) in the direction of the arrow.
    3. Release the hook securing the feed roll (B) to the shaft (C).
    4. Remove the feed roll (B).
    Note:  Do not touch the rubber surface of the feed roll (B).
    A
    Connector
    Front
    A HookC
    B 
    						
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    Pick roll removal 
    1. Remove the media tray. 
    2. Move the media feed unit front guide (A) in the direction of the arrow. 
    3. Release the hook securing the pick roll (B) to the shaft (C). 
    4. Remove the pick roll (B). 
    Note:  Do not touch the rubber surface of the feed roll (B). 
    Replacement note:  Before reinstalling, do not touch the rubber surface of the pick roll (B).
    C
    B Hook
    A
    Front 
    						
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    Separation roll removal 
    1. Remove the media tray. 
    2. Move the feed unit front guide (A) in the direction of the arrow. 
    3. Release the hook securing the separation roll (B) to the shaft (C). 
    4. Remove the separation roll (B). 
    Note:  Do not touch the rubber surface of the feed roll (B). 
    Replacement note:  Before reinstalling, do not touch the rubber surface of the separation roll (B).
    Sensor (RFID toner cartridge) removal
    Note:  This removal applies to the sensor (RFID K toner cartridge), (RFID C toner cartridge), (RFID M toner 
    cartridge) and (RFID Y toner cartridge).
    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 K toner add assembly. See “K toner add assembly removal” on page 4-58.
    8. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
    9. Remove the right cover assembly. See “Right cover assembly removal” on page 4-4.
    10. Remove the top cover assembly. See “Top cover assembly removal” on page 4-4.
    11. Remove the main power switch actuator. See “Main power switch actuator removal” on page 4-102.
    12. Remove the CMYK toner add motor assembly. See “CMYK toner add motor assembly removal” on 
    page 4-103.
    13. Release the hooks securing the appropriate sensor (RFID toner cartridge) (A) to the assembly.
    A
    C
    B Front 
    						
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    14. Remove the appropriate sensor (RFID toner cartridge) (A).
    15. Remove the connection from the sensor (RFID toner cartridge) (A). 
    Fuser exit roll assembly removal 
    1. Open the printer left door assembly.
    2. Remove the E-clip securing the fuser exit roll assembly (A) to the machine.
    3. Remove the bushings (B).
    4. Remove the fuser exit roll assembly (A).
    MPF media out actuator 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. Remove the two screws securing the upper frame cover (A).
    5. Remove the upper frame cover (A).
    6. Using a prying tool, gently pry the MPF media out actuator (B) from the upper frame cover (A).
    A
    B
    E-clip 
    						
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