Lexmark C 950 Service Manual
Have a look at the manual Lexmark C 950 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 166 Lexmark manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
Diagnostic information 2-51 5058-030 Go Back Previous Next 121.09 Fuser temperature lag error 3Replace the fuser assembly. See “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 4.Problem resolved 4Check the fuser driver for poor connection or damaged connector. Is the fuser driver properly connected? Go to step 5.Replace the connection. 5Replace the fuser driver. See “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 6.Problem resolved 6Check the sub-LVPS for poor connection or damaged connector. Is the component properly connected? Go to step 7.Replace the connection. 7Replace the sub-LVPS. See “Sub LVPS PCBA removal” on page 4-161. Does the error remain? Go to step 8.Problem resolved 8Check the LVPS for poor connection or damaged connector. Is the component properly connected? Go to step 9.Replace the connection. 9Replace the LVPS. See “LVPS PCBA removal” on page 4-109.Call the next level of support.Problem resolved StepAction and questionsYesNo 1Check the fuser assembly. Is the above component properly connected? Go to step 2.Remove foreign particles, and replace the connections. 2Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 3.Problem resolved Step Action and questions Yes No
2-52 Service Manual 5058-030 Go Back Previous Next121.10 Heat belt rotation failure 121.11 Fuser temperature recovery failure 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Check the fuser assembly. Is the above component properly connected? Go to step 2.Remove foreign particles, and replace the connections. 2Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Problem resolved StepAction and questionsYesNo 1Check the fuser assembly. Is the above component properly connected? Go to step 2.Remove foreign particles, and replace the connections. 2Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved Step Action and questions Yes No
Diagnostic information 2-53 5058-030 Go Back Previous Next 121.12 Fuser failure 121.13 Fuser thermostat failure 126.01 Fuser driver interface failure StepAction and questionsYesNo 1POR the machine. Does the error continue? Go to step 2.Problem resolved 2Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error continue? Replace the fuser drive PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error continue? Problem resolved StepAction and questionsYesNo 1Check the fuser assembly. Is the above component properly connected? Go to step 2.Remove foreign particles, and replace the connections. 2Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved
2-54 Service Manual 5058-030 Go Back Previous Next 126.02 Fuser driver to upper engine PCBA interface failure 126.03 Fuser driver communication failure 126.04 Fuser driver freeze failure StepAction and questionsYesNo 1Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2POR the machine. Does the error continue? Go to step 3.Problem resolved 3Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Does the error continue? Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Problem resolved StepAction and questionsYesNo 1Remove the sub LVPS PCBA. Go to “Sub LVPS PCBA removal” on page 4-161. Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Remove the sub LVPS PCBA. Go to “Sub LVPS PCBA removal” on page 4-161. Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections.
Diagnostic information 2-55 5058-030 Go Back Previous Next 126.05 Fuser driver high voltage error 126.06 Fuser driver low voltage error 126.07 Fuser driver surge failure 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Remove the fuser cooling fan. Go to “Fuser cooling fan removal” on page 4-81. Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 2.Problem resolved 2POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Remove the fuser cooling fan. Go to “Fuser cooling fan removal” on page 4-81. Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 2.Problem resolved 2POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1POR the machine. Does the error continue? Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Problem resolved Step Action and questions Yes No
2-56 Service Manual 5058-030 Go Back Previous Next 126.08 IGBT high temperature error 126.09 IGBT temperature sensor failure 126.12 Input low current error StepAction and questionsYesNo 1Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Remove the sub LVPS PCBA. Go to “Sub LVPS PCBA removal” on page 4-161. Check the fuser driver PCBA. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” on page 4-87. Does the error remain? Go to step 3.Problem resolved
Diagnostic information 2-57 5058-030 Go Back Previous Next 132.01 ATC sensor (K) failure 3Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 4.Problem resolved 4POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Check the path from the toner cartridge to the developer. Is the above component free from obstacles? Go to step 2.Remove the toner blockages, including internal clogs inside the developer and toner cartridge. 2Check the ATC sensor PCB. Is the above component properly connected? Go to step 3.Replace the connections. 3Remove the ATC sensor PCB. Go to “ATC sensor PCB removal” on page 4-26. Does the error remain? Go to step 4.Problem resolved 4Check the toner dispense motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch K toner dispense motor. Does the above component operate properly? Go to step 6.Go to step 5. 5Check the toner dispense motor for proper connection. Is the above component properly connected? Replace the toner dispense motor. Go to “Toner dispense motor removal” on page 4-166. Replace the connections. Step Action and questions Yes No
2-58 Service Manual 5058-030 Go Back Previous Next 132.02 ATC sensor (Y) failure 6Check the developer motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch Developer motor. Does the above component operate properly? Go to step 8.Go to step 7. 7Check the developer motor for proper connection. Is the above component properly connected? Replace the PC/developer drive motor. Go to “PC/developer drive motor removal” on page 4-135. Replace the connection. 8POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 9. Problem resolved 9POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved StepAction and questionsYesNo 1Check the path from the toner cartridge to the developer. Is the above component free from obstacles? Go to step 2.Remove the toner blockages, including internal clogs inside the developer and toner cartridge. 2Check the ATC sensor PCB. Is the above component properly connected? Go to step 3.Replace the connections. 3Remove the ATC sensor PCB. Go to “ATC sensor PCB removal” on page 4-26. Does the error remain? Go to step 4.Problem resolved Step Action and questions Yes No
Diagnostic information 2-59 5058-030 Go Back Previous Next 4Check the toner dispense motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch Y toner dispense motor. Does the above component operate properly? Go to step 6.Go to step 5. 5Check the toner dispense motor for proper connection. Is the above component properly connected? Replace the toner dispense motor. Go to “Toner dispense motor removal” on page 4-166. Replace the connections. 6Check the developer motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch Developer motor. Does the above component operate properly? Go to step 8.Go to step 7. 7Check the developer motor for proper connection. Is the above component properly connected? Replace the PC/developer drive motor. Go to “PC/developer drive motor removal” on page 4-135. Replace the connection. 8POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 9. Problem resolved 9POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Problem resolved Step Action and questions Yes No
2-60 Service Manual 5058-030 Go Back Previous Next 132.03 ATC sensor (M) failure StepAction and questionsYesNo 1Check the path from the toner cartridge to the developer. Is the above component free from obstacles? Go to step 2.Remove the toner blockages, including internal clogs inside the developer and toner cartridge. 2Check the ATC sensor PCB. Is the above component properly connected? Go to step 3.Replace the connections. 3Remove the ATC sensor PCB. Go to “ATC sensor PCB removal” on page 4-26. Does the error remain? Go to step 4.Problem resolved 4Check the toner dispense motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch M toner dispense motor. Does the above component operate properly? Go to step 6.Go to step 5. 5Check the toner dispense motor for proper connection. Is the above component properly connected? Replace the toner dispense motor. Go to “Toner dispense motor removal” on page 4-166. Replace the connections. 6Check the developer motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch Developer motor. Does the above component operate properly? Go to step 8.Go to step 7.