Lexmark C 950 Service Manual
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Diagnostic information 2-41 5058-030 Go Back Previous Next 115.09 Multiple LED printhead write failure 115.10 Single LED printhead write failure 4POR the machine. Does the error continue? Replace the lower engine PCBA . Go to “Lower engine PCBA removal” on page 4-101. Go to step 5. Problem resolved 5POR 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 LED printhead for proper connections. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the printhead interface contact. 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. 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 LED printhead for proper installation. Is the LED Printhead properly installed? Go to step 2.Install the LED printhead properly. 2Check the LED printhead for proper connections. Is the above component properly connected? Go to step 3.Replace the connections. 3Replace the printhead flat data cable Does the error remain? Go to step 4.Problem resolved Step Action and questions Yes No
2-42 Service Manual 5058-030 Go Back Previous Next 115.11 Multiple LED printhead communication failure 4Replace the printhead interface contact. Does the error remain? Go to step 5.Problem resolved 5Check the PC/developer drive motor assembly. Is the above component properly installed? Go to step 6.Replace connections and re-install the PC/developer drive motor assembly. 6POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 7. Problem resolved 7POR 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 LED printhead for proper installation. Is the LED Printhead properly installed? Go to step 2.Install the LED printhead properly. 2Replace the printhead flat data cable Does the error remain? Go to step 3.Problem resolved 3Replace the printhead interface contact. Does the error remain? Go to step 4.Problem resolved 4POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 5. Problem resolved 5POR 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 2-43 5058-030 Go Back Previous Next 115.12 Single LED printhead communication failure 115.13 Multiple LED printhead clock failure StepAction and questionsYesNo 1Check the LED printhead for proper installation. Is the LED Printhead properly installed? Go to step 2.Install the LED printhead properly. 2Check the LED printhead for proper connections. Is the above component properly connected? Replace the LED printhead. Go to “LED printhead removal” on page 4-99. Go to step 3. Replace the connections. 3Replace the printhead flat data cable Does the error remain? Go to step 4.Problem resolved 4Replace the printhead interface contact. Does the error remain? Go to step 5.Problem resolved 5Check the PC/developer drive motor assembly. Is the above component properly installed? Go to step 6.Replace connections and re- install the PC/developer drive motor assembly. 6POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 7. Problem resolved 7POR 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 LED printhead for proper connections. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the printhead interface contact. Does the error remain? Go to step 3.Problem resolved
2-44 Service Manual 5058-030 Go Back Previous Next 115.14 Single LED printhead clock failure 115.15 Tray module logic failure 3POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. 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 LED printhead for proper installation. Is the LED Printhead properly installed? Go to step 2.Install the LED printhead properly. 2Check the LED printhead for proper connections. Is the above component properly connected? Replace the LED printhead. Go to “LED printhead removal” on page 4-99. Go to step 3. Replace the connections. 3Replace the printhead flat data cable Does the error remain? Go to step 4.Problem resolved 4Replace the printhead interface contact. Does the error remain? Go to step 5.Problem resolved 5POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 6. Problem resolved 6POR 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 tray module PCBA for proper connection. Is the above component properly connected? Go to step 2.Replace the connections. Step Action and questions Yes No
Diagnostic information 2-45 5058-030 Go Back Previous Next 120.01 Fuser motor failure 2Replace the tray module controller PCBA. Go to “Tray module controller PCBA removal” on page 4-209. 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. Go to step 6. 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 fuser 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 Fuser/lower redrive/ 1st transfer retract motor. Does the above component operate properly? Go to step 3.Go to step 2. 2Check the fuser motor for proper connection. Is the above component properly connected? Replace the fuser motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” on page 4-94. Replace the connections. 3POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. 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 Step Action and questions Yes No
2-46 Service Manual 5058-030 Go Back Previous Next 120.02 Fuser pressure roll retract motor failure 121.01 Encoder pulse failure StepAction and questionsYesNo 1Check the fuser pressure roll retract motor. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser pressure roll retract motor. Go to “Fuser pressure roll retract motor removal” on page 4-91. Does the error remain? Go to step 3.Problem resolved 3Check the fuser assembly. Is the above component properly connected? Go to step 2.Replace the connections. 4Replace the fuser assembly. Go to “Fuser assembly removal” on page 4-81. Does the error remain? Go to step 3.Problem resolved 5POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 6. Problem resolved 6POR 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.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
Diagnostic information 2-47 5058-030 Go Back Previous Next 121.02 Encoder pulse failure 121.03 Heat belt (center) disconnection error 121.04 Heat belt (center) overheat error StepAction and questionsYesNo 1Check the fuser assembly. Is the above component properly connected? Go to step 2.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 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 1Enter into invalid engine code and flash the PJL file. Go to support.lexmark.com or go to the following link: http://downloads.lexmark.com/webcontent/kbase/downloads/744_001_00nvm_ver2.zip Does the error remain? Go to step 2.Problem resolved
2-48 Service Manual 5058-030 Go Back Previous Next 121.05 Heat belt (rear) disconnection error 2Check if the fuser assembly is properly connected. Is the fuser assembly properly connected? Go to step 3.Remove foreign particles, and replace the connections. 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. Step Action and questions Yes No
Diagnostic information 2-49 5058-030 Go Back Previous Next 121.06 Heat belt (rear) overheat error 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 1Enter into invalid engine code and flash the PJL file. Go to support.lexmark.com or go to the following link: http://downloads.lexmark.com/webcontent/kbase/downloads/744_001_00nvm_ver2.zip Does the error remain? Go to step 2.Problem resolved 2Check if the fuser assembly is properly connected. Is the fuser assembly properly connected? Go to step 3.Remove foreign particles, and replace the connections. 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. Step Action and questions Yes No
2-50 Service Manual 5058-030 Go Back Previous Next 121.07 Heat belt (center) temperature increase failure 121.08 Heat belt (rear) temperature increase failure 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 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 1Enter into invalid engine code and flash the PJL file. Go to support.lexmark.com or go to the following link: http://downloads.lexmark.com/webcontent/kbase/downloads/744_001_00nvm_ver2.zip Does the error remain? Go to step 2.Problem resolved 2Check if the fuser assembly is properly connected. Is the fuser assembly properly connected? Go to step 3.Remove foreign particles, and replace the connections. Step Action and questions Yes No