Lexmark X940e Owners Manual
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Diagnostic information2-225 7510 Go Back Previous Next Tray 3 media type mismatch error 3Check the sensor (transparency detect) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch BASE SENSOR TESTS. 3. Touch Media path. 4. Touch Transparency detect Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked?Go to step 5. Go to step 4. 4Check the sensor (transparency detect) for proper connection. Is the above component properly connected?Replace the sensor (transparency detect). Go to “Sensor (transparency detect) removal” on page 4-48.Replace the connection. 5Perform a POR. Does the error remain when the power is turned off/on?Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal” on page 4-91.Problem solved. 6Perform a POR. Does the error remain when the power is turned off/on again?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No 1Check the media tray assembly 3 for the correct media type. Does the above tray contain the correct type of media?Go to step 2. Install the correct media. 2Check the media tray assembly 3 for the transparencies. Does the media tray 1 assembly contain transparencies?Ensure that the media tray assembly is supposed to be configured for transparencies or replace them with standard media.Go to step 3. Step Check Yes No
2-226Service Manual 7510 Go Back Previous Next Tray 4 media type mismatch error 3Check the sensor (transparency detect) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch BASE SENSOR TESTS. 3. Touch Media path. 4. Touch Transparency detect Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked?Go to step 5. Go to step 4. 4Check the sensor (transparency detect) for proper connection. Is the above component properly connected?Replace the sensor (transparency detect). Go to “Sensor (transparency detect) removal” on page 4-48.Replace the connection. 5Perform a POR. Does the error remain when the power is turned off/on?Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal” on page 4-91.Problem solved. 6Perform a POR. Does the error remain when the power is turned off/on again?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No 1Check the media tray assembly 4 for the correct media type. Does the above tray contain the correct type of media?Go to step 2. Install the correct media. 2Check the media tray assembly 4 for the transparencies. Does the media tray 1 assembly contain transparencies?Ensure that the media tray assembly is supposed to be configured for transparencies or replace them with standard media.Go to step 3. Step Check Yes No
Diagnostic information2-227 7510 Go Back Previous Next 3Check the sensor (transparency detect) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch BASE SENSOR TESTS. 3. Touch Media path. 4. Touch Transparency detect Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked?Go to step 5. Go to step 4. 4Check the sensor (transparency detect) for proper connection. Is the above component properly connected?Replace the sensor (transparency detect). Go to “Sensor (transparency detect) removal” on page 4-48.Replace the connection. 5Perform a POR. Does the error remain when the power is turned off/on?Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal” on page 4-91.Problem solved. 6Perform a POR. Does the error remain when the power is turned off/on again?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
2-228Service Manual 7510 Go Back Previous Next Image quality trouble Printer 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 • Faint print (low contrast)— “Faint print (Low contrast)” on page 2-229. •Blank print (no print)— “Blank print (no print)” on page 2-231. •Solid black— “Solid black” on page 2-233. •Vertical blank lines (White stripes in media transport direction)— “Vertical lines and bands (process direction)” on page 2-234. •Horizontal band—“Horizontal white stripes or bands (side to side direction)” on page 2-236 •Vertical stripes— “Vertical stripes (process direction)” on page 2-238. •Horizontal stripes— “Horizontal stripes (side to side direction)” on page 2-240. •Partial lack— “Partial lack” on page 2-242. •Spots— “Spots” on page 2-244. •Afterimage— “After image” on page 2-245. •Background (fog)— “Background (fog)” on page 2-247. •Skew—“Skew” on page 2-249. •Media damage— “Media damage” on page 2-251. •No fuse—“No fuse” on page 2-253. •Color mis-registration—Go to “Color misregistration” on page 2-254. •Deletions—Go to “Deletions” on page 2-255. •High frequency bands—Go to “High frequency bands” on page 2-256. •Diagonal banding—Go to Go to “Diagonal banding” on page 2-257. Note: When horizontal lines and/or spots occur periodically, it is possibly caused by a particular roll. In this case, measure the interval on the print test, and check the relation to the roll in the printer. The interval does not necessarily match circumference of the roll.
Diagnostic information2-229 7510 Go Back Previous Next Image Quality Faint print (Low contrast) 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 media condition. Load new, dry, recommended media, and perform a print test. Is the image density normal?Problem solved. Go to step 2. 2Check the four toner cartridges. Re-print the defective image. Is the image density normal?Problem solved. Replace any empty toner cartridges. 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. 5Check 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 6. Remove debris or clean the printhead assembly window. Leading edge Trailing edge
2-230Service Manual 7510 Go Back Previous Next 6Check the toner add motor assembly. Replace the toner add motor assembly. Go to “CMYK toner add motor assembly removal” on page 4-103. Does the error continue.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. 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 problem remain?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
Diagnostic information2-231 7510 Go Back Previous Next Blank print (no print) Check the media path for foreign objects such as staples, clips, scraps of media. Step Check Yes No 1Check the four toner cartridges. Re-print the defective image. Is the image density normal?Problem solved. Replace any empty toner cartridges. 2Check the 2nd transfer roll assembly for contamination and wear. Is the 2nd transfer roll assembly free of excess wear and contamination?Go to step 3. Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. 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. 4Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45.Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45.Replace the 2nd transfer roll assembly. Go to “2nd transfer roll assembly removal” on page 4-45. 5Check the toner add motor assembly. Replace the toner add motor assembly. Go to “CMYK toner add motor assembly removal” on page 4-103. Does the error continue.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.
2-232Service Manual 7510 Go Back Previous Next 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. 8Check the printhead assembly for connection. Is the above component properly connected?Go to step 9. Replace the connection. 9Check 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 10. Problem solved. 10Replace the printhead assembly. Go to “Printhead assembly removal” on page 4-104. Does the error continue?Go to step 11. Problem solved. 11Check 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?Replace the RIP card assembly. Go to “RIP card assembly removal” on page 4-84.Problem solved. Step Check Yes No
Diagnostic information2-233 7510 Go Back Previous Next Solid black Check the media path for foreign objects such as staples, clips, scraps of media. 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. 2Check the charge roll HVPS card assembly connections Is the above component properly connected?Go to step 3 Replace the connection. 3Replace the charge roll HVPS card assembly. Go to “Charge roll HVPS card assembly removal” on page 4-113. Perform a print test. Does the error continue?Go to step 4. Problem solved. 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.
2-234Service Manual 7510 Go Back Previous Next Vertical lines and bands (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. 2Is the media transfer route and the media path clear of debris?Go to step 3. Remove debris or contamination. 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 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. 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. 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. 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. Leading edge Trailing edge