Lexmark X940e Owners Manual

Diagnostic aids3-51
7510
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Repeating defects
Roll Pitch
2nd transfer roll 83.05 mm
Registration roll 62.61 mm 
Developer magnetic roll 33.76 mm 
Developer auger roll 43.89 mm
Fuser hot roll 85.15 mm
Charge roll 43.98 mm 
PC drum 94.25 mm 
Transfer belt 949.00 mm
Fuser
pressure rollFuser hot roll
2nd transfer roll
Registration rollPC drum
Charge roll 

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Repair information4-1
 7510
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4.  Repair information
Warning:  Read the following before handling electronic parts.
Handling ESD-sensitive parts 
Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent 
damage to ESD-sensitive parts, use the following instructions in addition to all the usual precautions, such as 
turning off power before removing logic boards:
•Keep the ESD-sensitive part in its original shipping container (a...

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Removal procedures
Before starting service work
Note:  Some removal procedures require removing cable ties. You must replace cable ties during reassembly to 
avoid pinching wires, obstructing the paper path, or restricting mechanical movement.
Note:  A wide variety of screws are used; make note of their positions during service.
CAUTION:  
Remove the power cord from the electrical outlet before you connect or disconnect any cable 
or electronic board or...

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Printer front door assembly removal 
1. Open the printer front door assembly.
2. Press the tab, and rotate the two flexible supports (A) 90°, and pull from the machine.
3. Remove the two flexible supports (A).
4. Remove the two screws securing the two brackets (B) to the printer front door assembly (C).
5. Remove the two brackets (B).
6. Remove the printer front door assembly (C).
B
ab
A
C
T 

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Right cover assembly removal 
Note:  Detach the finisher if equipped. Refer to the MFP or Printer Finisher Service Manual.
1. Open the transfer belt unit access door (A).
2. Remove the three screws securing the right cover assembly (B) to the machine.
3. Move the right cover assembly (B) down, and pull out.
4. Remove the right cover assembly (B).
Top cover assembly removal 
1. Remove the base machine from the scanner/ADF stand assembly.
2. Open the printer...

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Rear cover assembly removal 
1. Remove the blind cover (A).
2. Remove all connectors and power cords from the rear of the machine.
3. Remove the four screws securing the rear cover assembly (B) to the machine.
4. Remove the rear cover assembly (B).
B
A
Connectors 

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Rear left middle cover removal 
1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
2. Open the printer left door assembly.
3. Remove the screw securing the rear left middle cover (A) to the machine.
4. Remove the rear left middle cover. 
A 

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Rear left upper cover removal 
1. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
Warning:  Ensure that the rear left middle cover is removed before removing the rear left upper cover, or 
damage will occur.
2. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
3. Remove one screw securing the rear left upper cover (A) to the machine.
4. Release the hook securing the rear left upper cover...

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Printer left lower door assembly removal 
1. Remove the media tray 1.
2. Open the printer left lower door assembly.
3. Disconnect the connector from the printer left lower door assembly (A).
4. Release the harness from the clamp.
5. Pull the cap of the hinge pin (B) out with a prying tool to remove the hinge pin (B) from the machine.
6. Remove the hinge pin (B).
7. Remove the printer left lower door assembly (A).
MPF feed unit assembly removal 
1. Remove the...