Lexmark X 850 Owners Manual
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Diagnostic information2-63 7500-XXX 5 Check the sensor (tray 2 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor test. 4. Touch Tr a y 2 . 5.To u c h Media out. Open the printer left lower door assembly and check it. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area?Go to step 7. Go to step 6. 6 Check the sensor (tray 2 feed-out) connection. Is the sensor (tray 2 feed-out) properly connected?Replace the sensor (tray 2 feed-out). Go to “Sensor (tray 2 feed-out) removal” on page 4-83.Replace the connection. 7 Check the sensor (pre-feed), in tray 2, for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor test. 4. Touch Tr a y 2 . 5. Touch Pre-feed. Remove the media tray assembly and check it. Does the display, on the operation panel, change every time a white piece of paper is placed over the sensing area?• Ensure the media feed unit front guide is installed properly. • Go to step 9.Replace the sensor (pre-feed). 8 Check the sensor (pre-feed) connection. Is the sensor (pre-feed) properly connected?Replace the sensor (pre-feed). Replace the connection. 9 Check the MPF/transport drive motor. Perform the MPF/transport drive motor test. Open the ADF left cover assembly. Remove the rear motor cover. Go to “Rear motor cover removal” on page 4-11. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Printer Motor Tests. 4. Touch MPF/Transport mtr Does the MPF/transport motor operate properly?Go to step 11. Go to step 10. 10 Check the MPF/transport drive motor for connection. Is the above motor connected properly?Replace the MPF/ transport drive motor. Go to “MPF/ transport drive motor assembly removal” on page 4-82.Replace the connection. Step Check Yes No
2-64MFP Service Manual 7500-XXX 242.02 Sensor (registration) on jam (tray 2 feed) 11 Perform a print test. Does the error continue?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. Step Check Yes No 1 Check the media condition. Is the media, in the tray, crumpled or damaged?Replace the media with new; ensure it is dry.Go to step 2. 2 Check the media size setup. Does the media size, in use, match the size set for tray 2?Go to step 3. Replace the media or change the media size setup. 3 Check the roll for tray 2. Remove tray 2 and check it. Are the feed roll, separation roll, and pick roll free of excess wear and contamination?Go to step 4. Clean or replace the feed roll, separation roll, and pick roll. Go to “Feed roll removal” on page 4-45, “Separation roll removal” on page 4-49, and “Pick roll removal” on page 4-51. 4 Check the media position. Open the printer left door assembly and visually check it. Does the media touch the sensor (registration)?Remove the media.Go to step 5. 5 Check the media position. Open the printer left lower door assembly and visually check it. Does the media touch the sensor (tray 2 feed-out)?Remove the media.Go to step 6. 6 Check the sensor (registration) for proper operation. Open the printer left door assembly and check it. 1. Enter the Diagnostics Menu. 2. Touch BASE SENSOR TEST. 3. Touch Media Path. 4. Touch Registration. Open the printer left door assembly and check it. Does the display, on the operator panel, change every time the sensor actuator is operated? Go to step 8. Go to step 7. Step Check Yes No
Diagnostic information2-65 7500-XXX 7 Check the sensor (registration) connection. Is the sensor (registration) properly connected?Replace the sensor (registration). Go to “Sensor (registration) removal” on page 4-81.Replace the connection. 8 Check the sensor (tray 2 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 2 . 5. Touch Feed-out. Open the printer left lower door assembly, and check it. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area?Go to step 10. Go to step 9. 9 Check the sensor (tray 2 feed-out) connection. Is the sensor (tray 2 feed-out) properly connected?Replace the sensor (tray 2 feed-out). Go to “Sensor (tray 2 feed-out) removal” on page 4-83.Replace the sensor (tray 2 feed-out). 10 Check the MPF/transport drive motor. Perform the MPF/transport drive motor test. Open the ADF left cover assembly. Remove the rear motor cover. Go to “Rear motor cover removal” on page 4-11. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Printer Motor Tests. 4. Touch MPF/Transport mtr Does the MPF/transport motor operate properly?Go to step 12. Go to step 11. 11 Check the MPF/transport drive motor for connection. Is the above motor connected properly?Replace the MPF/ transport drive motor. Go to “MPF/ transport drive motor assembly removal” on page 4-82.Replace the connection. 12 Perform a print test. Does the error continue?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. Step Check Yes No
2-66MFP Service Manual 7500-XXX 242.03 Sensor (tray 2 feed-out) static jam 243.00 Sensor (pre-feed) on jam (tray 3 media feed) Step Check Yes No 1 Check the media position. Does the media touch the sensor (tray 2 feed-out)? Open the printer left lower door assembly, and visually check it. Remove the media.Go to step 2. 2 Check the sensor (tray 2 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 2 . 5. Touch Feed-out. Open the printer left lower door assembly, and check it. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area? Go to step 4. Go to step 3 3 Check the sensor (tray 2 feed-out) connection. Is the sensor (tray 2 feed-out) properly connected? Replace the sensor (tray 2 feed-out).Replace the connection. 4 Perform a print test. Does the error continue?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. StepCheckYe sNo 1Check the media condition. Is the media in the tray crumpled or damaged?Replace the media.Go to step 2. 2Check the media size setup. Does the media size in use match the size set for tray 3?Go to step 3.Replace the media, or change the media size setup. 3Check the tray 3 rolls. Pull out tray 3, and check it. Are the feed roll, separation roll, and pick roll for transport free of excess wear and contamination?Go to step 4.Clean or replace the feed roll, separation roll, and pick roll. Go to “2000-sheet dual input (TTM)– feed roll removal” on page 4-259, “2000-sheet dual input (TTM)– separation roll removal” on page 4-263, and “2000-sheet dual input (TTM)–pick roll removal” on page 4-266.
Diagnostic information2-67 7500-XXX 4Check the media position. Open the 2TM/TTM left door assembly, and visually check it. Does the media touch the sensor (pre-feed) of the tray 3 media feed unit assembly?Remove the media.Go to step 5. 5Check the tray 3 sensor (pre-feed) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 3 . 5. Touch Feed-out. Remove the media tray assembly. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area of the above sensor?Go to step 7.Go to step 6. 6Check the tray 3 sensor (pre-feed) for proper connection. Is the above sensor connected properly?Replace the sensor (pre-feed). Go to “2000-sheet dual input (TTM)– sensor (pre-feed) removal” on page 4-256.Replace the connection. 7Check the connection between the 2TM/TTM controller card assembly and the printer engine card assembly. Are the above cards connected properly?Go to step 8.Replace the connection. 8Check the tray 3 media feed lift motor for proper operation. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Printer Motor Test. 4. Touch Tray 3 feed mtr. Does the above motor rotate normally?Go to step 11. Go to step 9. 9Check the tray 3 media feed lift motor for proper connection. Is the above motor connected properly?Go to step 10.Replace the connection. 10Check the tray 3 media feed lift motor for proper operation. Replace the media feed lift motor for tray 3 with that from tray 4. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Printer Motor Test. 4. Touch Tray 3 feed mtr. Does the above motor rotate normally?Reinstall the media feed lift motor for tray 4 as it previously was, and replace the media feed lift motor for tray 3 with a new one. Go to “2000-sheet dual input (TTM)– media feed lift motor removal” on page 4-248.Replace the 2TM/ TTM controller card assembly. Go to “2000-sheet dual input (TTM)– 2TM/TTM controller card assembly removal” on page 4-274. StepCheckYe sNo
2-68MFP Service Manual 7500-XXX 243.01 Sensor (tray 3 feed-out) on jam (tray 3 media feed) 11Perform a print test. Does the error still occur?Replace the 2TM/ TTM controller card assembly. Go to “2000-sheet dual input (TTM)– 2TM/TTM controller card assembly removal” on page 4-274. Go to step 12.Problem solved. 12Perform a print test. Does the error still occur?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. StepCheckYe sNo 1Check the media condition. Is the media in the tray crumpled or damaged?Replace the media.Go to step 2. 2Check the media size setup. Does the media size in use match the size set for tray 3?Go to step 3.Replace the media, or change the media size setup. 3Check the tray 3 rolls. Pull out tray 3, and check it. Are the feed roll, separation roll, and pick roll for transport free of excess wear and contamination?Go to step 4.Clean or replace the feed roll, separation roll, and pick roll. Go to “2000-sheet dual input (TTM)– feed roll removal” on page 4-259, “2000-sheet dual input (TTM)– separation roll removal” on page 4-263, and “2000-sheet dual input (TTM)–pick roll removal” on page 4-266. 4Check the media position. Open the 2TM/TTM left door assembly, and visually check it. Does the media touch the tray 3 feed-out sensor or the sensor (pre-feed) of the tray 3 media feed unit assembly?Remove the media.Go to step 5. StepCheckYe sNo
Diagnostic information2-69 7500-XXX 5Check the sensor (tray 3 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 3 . 5. Touch Feed-out. Open the 2TM/TTM left door assembly, and visually check it. Does the display on the operator panel change every time the actuator on the above sensor operates?Go to step 7.Go to step 6. 6Check the sensor (tray 3 feed-out) for proper connection. Is the above sensor connected properly?Replace the sensor (tray 3 feed-out). Go to “2000-sheet dual input (TTM)– sensor (tray 3 feed- out) removal” on page 4-247.Replace the connection. 7Check the connection between the 2TM/TTM controller card assembly and the printer engine card assembly. Are the above cards connected properly?Go to step 8.Replace the connection. 8Check the tray 3 sensor (pre-feed) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 3 . 5. Touch Feed-out. Remove the media tray assembly. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area of the above sensor?Go to step 10.Go to step 9. 9Check the tray 3 sensor (pre-feed) for proper connection. Is the above sensor connected properly?Replace the sensor (pre-feed). Go to “2000-sheet dual input (TTM)– sensor (pre-feed) removal” on page 4-256.Replace the connection. 10Perform a print test. Does the error still occur?Replace the 2TM/ TTM controller card assembly. Go to “2000-sheet dual input (TTM)– 2TM/TTM controller card assembly removal” on page 4-274. Go to step 11.Problem solved. StepCheckYe sNo
2-70MFP Service Manual 7500-XXX 243.02 Sensor (tray 2 feed-out) on jam (tray 3 media feed) 11Perform a print test. Does the error still occur?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. StepCheckYe sNo 1Check the media condition. Is the media in the tray crumpled or damaged?Replace the media.Go to step 2. 2Check the media size setup. Does the media size in use match the size set for tray 3?Go to step 3.Replace the media or change the media size setup. 3Check the tray 3 rolls. Pull out tray 3, and check it. Are the feed roll, separation roll, and pick roll for transport free of excess wear and contamination?Go to step 4.Clean or replace the feed roll, separation roll, and pick roll. Go to “2000-sheet dual input (TTM)– feed roll removal” on page 4-259, “2000-sheet dual input (TTM)– separation roll removal” on page 4-263, and “2000-sheet dual input (TTM)–pick roll removal” on page 4-266. 4Check the media position. Open the printer left lower door assembly, and visually check it. Does the media touch the sensor (tray 2 feed-out)?Remove the media.Go to step 5. 5Check the media position. Open the 2TM/TTM left door assembly, and visually check it. Does the media touch the sensor (tray 3 feed-out)?Remove the media.Go to step 6. 6Check the sensor (tray 2 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 2 . 5. Touch Feed-out. Open the printer left lower door assembly, and visually check it. Does the display on the operator panel change every time a white piece of paper is placed over the sensing area of the above sensor?Go to step 8.Go to step 7. StepCheckYe sNo
Diagnostic information2-71 7500-XXX 243.03 Sensor (registration) on jam (tray 3 media feed) 7Check the sensor (tray 2 feed-out) for proper connection. Is the above sensor connected properly?Replace the sensor (tray 2 feed-out). Go to “Sensor (tray 2 feed-out) removal” on page 4-83.Replace the connection. 8Check the sensor (tray 3 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 3 . 5. Touch Feed-out. Open the 2TM/TTM left door assembly, and visually check it. Does the display on the operator panel change every time the actuator on the above sensor operates?Go to step 10. Go to step 9. 9Check the sensor (tray 3 feed-out) for proper connection. Is the above sensor connected properly?Replace the sensor (tray 3 feed-out). Go to “2000-sheet dual input (TTM)– sensor (tray 3 feed- out) removal” on page 4-247.Replace the connection. 10Check the 2TM/TTM controller card assembly and the printer engine card assembly for proper connection. Are connectors P541 and P413 on the above cards connected properly?Go to step 11.Replace the connection. 11Perform a print test. Does the error still occur?Replace the 2TM/ TTM controller card assembly. Go to “2000-sheet dual input (TTM)– 2TM/TTM controller card assembly removal” on page 4-274. Go to step 11.Problem solved. 12Perform a print test. Does the error still occur?Replace the printer engine card assembly. Go to “Printer engine card assembly removal” on page 4-117.Problem solved. StepCheckYe sNo 1Check the media condition. Is the media in the tray crumpled or damaged?Replace the media.Go to step 2. StepCheckYe sNo
2-72MFP Service Manual 7500-XXX 2Check the media size setup. Does the media size in use match the size set for tray 3?Go to step 3.Replace the media or change the media size setup. 3Check the tray 3 rolls. Pull out tray 3, and check it. Are the feed roll, separation roll, and pick roll for transport free of excess wear and contamination?Go to step 4.Clean or replace the feed roll, separation roll, and pick roll. Go to “2000-sheet dual input (TTM)– feed roll removal” on page 4-259, “2000-sheet dual input (TTM)– separation roll removal” on page 4-263, and “2000-sheet dual input (TTM)–pick roll removal” on page 4-266. 4Check the media position. Open the printer left door assembly, and visually check it. Does the media touch the sensor (registration)?Remove the media.Go to step 5. 5Check the media position. Open the 2TM/TTM left door assembly, and visually check it. Does the media touch the sensor (tray 3 feed-out)?Remove the media.Go to step 6. 6Check the sensor (registration) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch BASE SENSOR TEST. 3. Touch Media Path. 4. Touch Registration. Open the printer left door assembly, and visually check it. Does the display on the operator panel change every time the actuator on the above sensor operates?Go to step 8.Go to step 7. 7Check the sensor (registration) for proper connection. Is the above sensor connected properly?Replace the sensor (registration). Go to “Sensor (registration) removal” on page 4-81.Replace the connection. 8Check the sensor (tray 3 feed-out) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch INPUT TRAY TESTS. 3. Touch Sensor Test. 4. Touch Tr a y 3 . 5. Touch Feed-out. Open the 2TM/TTM left door assembly, and visually check it. Does the display on the operator panel change every time the actuator on the above sensor operates?Go to step 10.Go to step 9. StepCheckYe sNo