Lexmark X940e Owners Manual
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Diagnostic information2-245 7510 Go Back Previous Next After image The ghost appears on the media which, may be the image from the previous page or part of the page currently printing.7 Check the printhead assembly. Replace the printhead assembly. Go to “Printhead assembly removal” on page 4-104. Does the error continue?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 the error continue?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. 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 four toner cartridges. Re-print the defective image. Is the image density normal?Problem solved. Replace any empty toner cartridges. 3Check the heat roll and the pressure roll. Remove the fuser unit assembly. Caution: Allow the fuser unit assembly to cool down. Is there contamination or cracks on the heat roll and/or pressure roll?Replace the fuser unit assembly. Go to “Fuser unit assembly removal” on page 4-15.Go to step 4. Step Check Yes No Leading edge Trailing edge
2-246Service Manual 7510 Go Back Previous Next 4Check 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 4-84.Problem solved. Step Check Yes No
Diagnostic information2-247 7510 Go Back Previous Next Background (fog) 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 path free of contamination or debris.Go to step 3. Remove debris or contamination. 3Check 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 4. Correct and clean contaminated pins, or replace the appropriate PC cartridge or connector. 4Check the 2nd transfer roll assembly for contamination and wear. Is the 2nd transfer roll assembly free of excess wear and contamination?Go to step 5. Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. 5Replace the four developer units and four developer carriers. Go to “Developer unit assembly removal” on page 4-63 and “Developer carrier removal and replacement” on page 4-67. Does the problem remain?Go to step 6. Problem solved. 6Check 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 7. Problem solved. Leading edge Trailing edge
2-248Service Manual 7510 Go Back Previous Next 7Check the printhead assembly. Replace the printhead assembly. Go to “Printhead assembly removal” on page 4-104. Does the error continue?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 the error continue?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
Diagnostic information2-249 7510 Go Back Previous Next Skew 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 media into the media tray assembly and ensure all guides are set correctly. Properly install the media tray assembly into the printer. Re-print the defective image. Does the error continue?Go to step 3. Problem solved. 3Check for obstructions in the area of the media feed units. Are the media feed unit assembly free from any obstructions?Go to step 4. Remove obstructions. 4Is the printer left door assembly properly and evenly closed.Go to step 5. Open then properly close the printer left door assembly. 5Check the 2nd transfer roll assembly for contamination and wear. Is the 2nd transfer roll assembly free of excess wear and contamination?Go to step 6. Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. Leading edge Trailing edge
2-250Service Manual 7510 Go Back Previous Next 6Check the registration/transport roll assembly. Are all drive rolls on the registration/transport roll assembly free of contamination, wear and damage?Go to step 7. Replace registration/ transport roll assembly. Go to “Registration / transport roll assembly removal” on page 4-46. 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?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
Diagnostic information2-251 7510 Go Back Previous Next Media damage Step Check Yes No 1Check printer installation placement. Check the installation surface for irregularities. Check for missing printer foot. Is the setup surface normal?Go to step 2. Correct the installation placement. 2Check the media feed. Remove the media tray assembly. Properly load media in the media tray assembly. Properly install the media tray assembly in the printer. Re-print the defective image. Does the error continue?Go to step 3. Problem solved. 3Check the media condition. Load new, dry, recommended media. Re-print the defective image. Does the error continue?Go to step 4. Problem solved. 4Check the 2nd transfer roll assembly for contamination and wear. Is the 2nd transfer roll assembly free of excess wear and contamination?Go to step 5. Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. 5Check the registration/transport roll assembly. Are all drive rolls on the registration/transport roll assembly free of contamination, wear and damage?Go to step 6. Replace registration/ transport roll assembly. Go to “Registration / transport roll assembly removal” on page 4-46. Leading edge Trailing edge
2-252Service Manual 7510 Go Back Previous Next 6Check the heat roll and pressure roll. Remove the fuser unit assembly. CAUTION: Allow the fuser unit assembly to cool down. Is there contamination or cracks on the heat roll and/or pressure roll?Replace the fuser unit assembly. Go to “Fuser unit assembly removal” on page 4-15.Inspect the machine for obstructions in the media path. Step Check Yes No
Diagnostic information2-253 7510 Go Back Previous Next No fuse Step Check Yes No 1Check the fuser unit assembly installation. Check that the levers, on both sides of the fuser unit assembly, are pushed down. Re-print the defective image. Does the error continue?Go to step 2. Problem solved. 2Check the media condition. Load new, dry, recommended media. Re-print the defective image. Does the problem remain?Go to step 3. Problem solved. 3Check the heat roll and pressure roll. Remove the fuser unit assembly. CAUTION: Allow the fuser unit assembly to cool down. Is there contamination or cracks on the heat roll and/or pressure roll?Replace the fuser unit assembly. Go to “Fuser unit assembly removal” on page 4-15.Go to step 4. 4Check the connections on the AC drive card assembly. Replace the AC drive card assembly. Go to “AC drive card bracket assembly removal” on page 4-109 Does the error continue?Go to step 5. Problem solved. 5Check 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 4-84.Problem solved. Leading edge Trailing edge
2-254Service Manual 7510 Go Back Previous Next Color misregistration Step Check Yes No 1Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the error remain?Go to step 2. Problem solved. 2Replace the transfer belt steering motor. Go to “Transfer belt unit assembly removal” on page 4-16. Does the error remain?Go to step 3. Problem solved. 3Adjust the color registration (Regcon). Go to “” on page 4-264.Go to step 4. Problem solved. 4Replace the printhead. Go to “Printhead assembly removal” on page 4-104.Go to step 5. Problem solved. 5Re-adjust the color registration (Regcon) for the new printhead. Go to “” on page 4-264. Does the error remain?Go to step 6. Problem solved. 6Check 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 4-84.Problem solved.