Lexmark X940e Owners Manual

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Replacement warning:  If reusing an existing developer unit assembly, ensure that all traces of old carrier 
(B) are removed from the developer unit assembly, or print quality issues may occur.
B 

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To install the new carrier (B):
Warning:  Ensure that the carrier is installed evenly and uniformly in the assembly, or spillage may occur.
1. Open the appropriate bag, and dump the appropriate carrier into the appropriate assembly.
2. Rotate the gears in the assembly to evenly distribute the carrier (B).
Warning:  Ensure that the two seals are properly positioned in the assembly before replacing the top cover 
(A), or spillage may occur which may lead to...

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Photoconductor (PC) unit assembly removal
Warning:  Ensure that all four PC cartridges are concealed from all sources of light, or damage will occur.
Note:  This procedure can be applied to either the C, M, Y, or K PC unit assemblies.
1. Open the printer front door assembly.
2. Press the button on the transfer belt lift latch (A).
3. Raise the transfer belt lift latch (A) to its upper-most position.
4. Lower the transfer belt lift handle (B) to its...

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5. Pull the appropriate PC unit assembly (C) from the machine.
Note:  When the PC unit assembly (C) is removed, ensure that it is stored in the position as shown in the 
graphic below.
Replacement warning:  When replacing the PC unit assembly (C), ensure that the rail on the PC unit 
assembly (C) is properly inserted into the metal track or physical binding and damage will occur. In the  

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event that the PC unit assembly (C) becomes bound, it can be removed by twisting it in a clockwise 
direction while pulling it from the machine. 
Transfer belt lift latch 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...

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9. Remove the transfer belt lift latch assembly (A).
A 

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Transfer belt steering motor 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. Remove the sensor (waste toner cartridge full). See “Sensor (waste toner cartridge full) removal” on 
page 4-50.
5. Remove...

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12. Gently raise the rear of the appropriate CMY erase lamp assembly (B) to detach the mounting hook from the 
machine.
13. Remove the appropriate CMY erase lamp assembly (B).
K erase lamp assembly removal 
Warning:  Ensure the transfer belt assembly unit is removed, or damage will occur.
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...

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13. Gently raise the rear of the K erase lamp assembly (B) to detach the mounting hook from the machine.
14. Remove the K erase lamp assembly (B).
Connector
A
B
C 

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Printhead shutter motor assembly 
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 printer left door assembly. See “Printer left door assembly removal” on page 4-36.
5. Remove the registration transport roll assembly. See “Registration /...