Lexmark X940e Owners Manual

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Rear lower cooling fan 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 lower printer engine card bracket assembly. See “Lower printer...

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9. Remove the CMY developer drive motor assembly (A).
CMYK PC cartridge drive motor assembly removal 
Warning:  Ensure that all four PC cartridges are concealed from all sources of light, or damage will occur.
1. Remove the four PC cartridges from the machine.
2. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
3. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
4. Remove the rear upper...

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13. Remove the 24V LVPS card bracket assembly. See “24V LVPS card bracket assembly removal” on 
page 4-95.
14. Remove the CMYK transfer HVPS card assembly. See “CMYK transfer HVPS card assembly removal” 
on page 4-103
15. Remove the K developer transport drive motor assembly. See “K developer / transport drive motor 
assembly removal” on page 4-106.
16. Remove the two connectors from the CMYK PC cartridge drive motor assembly (A).
17. Release the hook...

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7. Remove the fuser cooling fan.
Main power switch actuator 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 screw securing the main power switch actuator (A) to the machine.
5. Release the hook securing the main power switch actuator (A) to...

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CMYK toner add 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...

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9. Remove the CMYK transfer HVPS card assembly (A).
Warning:  When reinstalling the CMYK transfer HVPS card assembly (A), ensure that the four high voltage 
cables are properly hooked up to the CMYK transfer HVPS card assembly (A) or print quality problems will 
occur..
Printhead assembly removal 
Warning:  When removing the printhead assembly, be careful not to drop it, or damage will occur.
Warning:  Always perform color registration adjustment when...

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9. Gently pull the printhead assembly (A) from the machine.
Replacement warning:  When replacing the printhead assembly, perform the color registration (RegCon) 
setup and adjustment. See “” on page 4-264.
Transfer belt waste toner auger assembly removal 
1. Remove the transfer belt unit assembly. See “Transfer belt unit assembly removal” on page 4-16.
2. Remove the two screws securing the transfer belt waste toner auger assembly (A).
3. Detach the...

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5. Remove the transfer belt waste toner auger assembly (A) from the machine. 
K developer / transport drive motor assembly removal 
1. Remove the fuser unit assembly. See “Fuser unit assembly removal” on page 4-15.
2. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
3. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
4. Remove the MPF feed unit assembly. See “MPF feed unit assembly removal”...

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15. Gently remove the K developer transport drive motor assembly (A).
A
Connector
Frame clamp
Connector
Clamp
ConnectorsClampsClampsB 

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K developer clutch removal 
1. Remove the duplex unit assembly. See “Duplex unit assembly removal” on page 4-10.
2. Remove the fuser unit assembly. See “Duplex controller card assembly removal” on page 4-14.
3. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
4. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
5. Remove the MPF feed unit assembly. See “MPF feed unit assembly removal” on page...