Lexmark X940e Owners Manual

Diagnostic information2-235
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8Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine card assembly removal” 
on page 4-88.
Perform a print test.
Does the problem remain?Go to step 9. Problem solved.
9Check the printhead assembly for connection.
Is the above component properly connected?Replace the RIP 
card assembly.
Go to “RIP card 
assembly 
removal” on 
page 4-84.Replace the 
connection. Step Check Yes No 

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Horizontal white stripes or bands (side to side direction)
Step Check Yes No
1Check the media condition.
Load new, dry, and recommended media.
Re-print the defective image.
Does the error continue?Go to step 2. Problem solved.
2Are the media transfer route and the media path free of 
contamination and debris?Go to step 3. Remove debris or 
contamination.
3Check the four toner cartridges.
Re-print the defective image.
Is the image density normal?Problem...

Diagnostic information2-237
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8Check the printhead assembly.
Replace the printhead assembly.
Go to “Printhead assembly removal” on page 4-104.
Does the error continue?Go to step 9. Problem solved.
9Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine card assembly removal” 
on page 4-88.
Perform a print test.
Does the error continue?Replace the RIP 
card assembly.
Go to “RIP card 
assembly 
removal” on 
page...

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Vertical stripes (process direction)
Step Check Yes No
1Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?Go to step 2. Problem solved.
2Are the media transfer route and the media path free of 
contamination or debris?Go to step 3. Remove debris 
or 
contamination.
3Check the 2nd transfer roll assembly for contamination 
and wear.
Is the 2nd transfer roll assembly free of excess wear and...

Diagnostic information2-239
7510
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7Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine card assembly removal” 
on page 4-88.
Perform a print test.
Does the error continue?Problem solved. Replace the RIP 
card assembly.
Go to “RIP card 
assembly 
removal” on 
page 4-84. Step Check Yes No 

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Horizontal stripes (side to side direction)
Step Check Yes No
1Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?Go to step 2. Problem solved.
2Check the media transfer route.
Check the media route for contamination or obstacles.Go to step 3. Remove 
obstacles or 
contamination.
3Check the four PC cartridges for proper installation.
Check the PC cartridge connections.
Are the PC cartridge...

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7Check the developer/transfer roll HVPS card assembly. 
Replace the developer/transfer roll HVPS card 
assembly.
Go to “Developer / transfer roll HVPS card assembly 
removal” on page 4-112.
Perform a print test.
Does the problem remain?Go to step 8. Problem solved.
8Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine card assembly removal” 
on page 4-88.
Perform a print test.
Does...

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Partial lack
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.
2Check the four toner cartridges.
Re-print the defective image.
Is the image density normal?Problem solved. Replace any 
empty toner 
cartridges.
3Check the laser beam route.
Check for debris between the printhead assembly and 
the PC drum.
Check the four printhead assembly windows...

Diagnostic information2-243
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8Check the printhead assembly.
Replace the printhead assembly.
Go to “Printhead assembly removal” on page 4-104.
Does the error continue?Go to step 9. Problem solved.
9Check the upper printer engine card assembly.
Replace the upper printer engine card assembly. 
Go to “Upper printer engine card assembly removal” 
on page 4-88.
Perform a print test.
Does the error continue?Problem solved. Replace the RIP 
card assembly.
Go to “RIP card 
assembly...

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Spots
Step Check Yes No
1Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?Go to step 2. Problem solved.
2Check the media transfer route.
Is the media route free of contamination or debris?Go to step 3. Remove debris 
or 
contamination.
3Check the four PC cartridges for spots or other damage 
on the drum surfaces.
Are the PC cartridges free of excess wear and 
contamination?Go to step 4....