Lexmark X940e Owners Manual
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Diagnostic information2-235 7510 Go Back Previous Next 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
2-236Service Manual 7510 Go Back Previous Next 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 solved. Replace any empty toner cartridges. 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 transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the problem remain?Go to step 6. Problem solved. 6Replace 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 7. Problem solved. 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. Leading edge Trailing edge
Diagnostic information2-237 7510 Go Back Previous Next 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 4-84.problem solved. Step Check Yes No
2-238Service Manual 7510 Go Back Previous Next 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 contamination?Go to step 4. Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. 4Check 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 5. Correct and clean contaminated pins, or replace the appropriate PC cartridge or connector. 5Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the problem remain?Go to step 6. Problem solved. 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.Go to step 8. Leading edge Trailing edge
Diagnostic information2-239 7510 Go Back Previous Next 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
2-240Service Manual 7510 Go Back Previous Next 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 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 transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the problem remain?Go to step 6. Problem solved. 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.Go to step 6. Leading edge Trailing edge
Diagnostic information2-241 7510 Go Back Previous Next 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 the error continue?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
2-242Service Manual 7510 Go Back Previous Next 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 for contamination. Is the laser beam route free of debris and the glass window, in the printhead assembly, free of contamination?Go to step 4. Remove debris or clean the printhead assembly window. 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 transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the problem remain?Go to step 6. Problem solved. 6Check the printhead installation. Is the printhead assembly installed properly with two screws?Go to step 8. Go to step 7. 7Check the printhead assembly installation. Install the printhead assembly properly, and perform a print test. Does the problem remain?Go to step 8. Problem solved. Leading edge Trailing edge
Diagnostic information2-243 7510 Go Back Previous Next 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 removal” on page 4-84. Step Check Yes No
2-244Service Manual 7510 Go Back Previous Next 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. 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. 5Check 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 6. 6Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal” on page 4-16. Does the problem remain?Go to step 7. Problem solved. Leading edge Trailing edge