Lexmark X940e Owners Manual

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Deletions
Step Check Yes No
1Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the problem remain?Go to step 2. Problem solved.
2Replace the transfer belt unit assembly. Go to 
“Transfer belt unit assembly removal” on page 4-16.
Does the problem remain?Go to step 3. Problem solved.
3Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine...

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High frequency bands
Step Check Yes No
1Check the four PC cartridges for proper installation.
Check the PC cartridge connections.
Are the PC cartridge connections free of excess wear 
and contamination?Go to step 2. Correct and 
clean 
contaminated 
pins, or replace 
the appropriate 
PC cartridge or 
connector.
2Replace the four developer units and four developer 
carriers. Go to “Developer unit assembly removal” 
on page 4-63 and “Developer carrier removal...

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Diagonal banding
Step Check Yes No
1Perform a print quality suite test to produce solid fill for 
each color.
Replace the appropriate developer unit assembly for the 
color that is producing the diagonal banding. 
Go to 
“Developer unit assembly removal” on page 4-63.
Did this fix the problem?Problem  solved. Contact the next 
level of support. 

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ADF & Scanner Related Troubleshooting
Note:  First, get a printout as a base, and follow the symptom table to identify the possible failing FRU’s. 
Image quality symptoms: 
•
Dark print — “Faint print (Low contrast)” on page 2-229.
•Vertical stripes— “Vertical stripes (process direction)” on page 2-238.
•Horizontal stripes— “Horizontal stripes (side to side direction)” on page 2-240.
•Spots— “Spots” on page 2-244.
•Skew—“Skew” on page 2-249.
•Media damage—...

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ADF & Scanner Image Quality 
Dark image quality (using ADF or Scanner)
Before starting, check the media route for foreign objects, such as staples, clips, and scraps, in the media path. 
Step Check Yes No
1Check the large and small platen glass on the scanner 
unit assembly.
Is the large and small platen glass contaminated?Clean both sides 
of the large and 
small platen 
glass.Go to step 2.
2Check the three mirrors in the scanner unit assembly.
Are...

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Vertical lines (process direction using the ADF)
Step Check Yes No
1Check the small platen glass on the scanner unit 
assembly.
Is the large and small platen glass contaminated or 
damaged?Clean or replace 
the small platen 
glass.
Go to “Large 
platen glass 
removal” on 
page 4-124.Go to step 2.
2Check the three mirrors in the scanner unit assembly.
Are the three mirrors contaminated or show signs of 
dust?Clean the three 
mirrors in the 
scanner unit...

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Spots (using flatbed scanner)
Step Check Yes No
1Check the large platen glass on the scanner unit 
assembly.
Is the large platen glass contaminated or damaged?Clean or replace 
the large platen 
glass.
Go to “Large 
platen glass 
removal” on 
page 4-124.Go to step 2.
2Check the three mirrors in the scanner unit assembly.
Are the three mirrors contaminated or show signs of 
dust?Clean the three 
mirrors in the 
scanner unit 
assembly.Go to step 3....

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Skew (using ADF)
The printed image is not paralleled with both sides of the media.
Step Check Yes No
1Check printer installation placement.
Check the installation surface for irregularities. 
Check for damaged printer caster. 
Is the setup surface normal?Go to step 2. Correct the 
installation 
placement.
2Properly load document into the ADF unit assembly and 
ensure all guides are set correctly. 
Re-print the defective image. 
Does the error continue?Go to...

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Media damage (using ADF)
Step Check Yes No
1Properly load document into the ADF unit assembly and 
ensure all guides are set correctly. 
Re-print the defective image. 
Does the error continue?Go to step 2. Problem solved.
2Check for obstructions in the area of the media feed 
path in the ADF.
Is the media feed path free from any obstructions?Go to step 3. Remove 
obstructions.
3Is the ADF left cover assembly properly and evenly 
closed.Go to step 4....

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Select a menu or menu item for more details.
Paper Menu
Paper Source
Paper Size
Paper Type
Custom Types
Output Bin
Configure Bins
Overflow Bin
Assign Type/Bin
Substitute Size
Configure MP
Paper Texture
Paper Weight
Paper Loading
Universal SetupSupplies Menu
 Toner
Oiler
Waste Bottle
Finishing Menu
Duplex
Duplex Bind
Copies
Blank Pages
Collation
Separator Sheets
Separator Source
Hole Punch
Offset Pages
Staple Job
Staple Prime Src
Multipage Print
Multipage...