Lexmark C 950 Service Manual
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Diagnostic information 2-61 5058-030 Go Back Previous Next 132.04 ATC sensor (C) failure 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 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 C toner dispense motor. Does the above component operate properly? Go to step 6.Go to step 5. Step Action and questions Yes No
2-62 Service Manual 5058-030 Go Back Previous Next 137.01 Upper printer engine PCBA communication error 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 StepAction and questionsYesNo 1POR 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 2-63 5058-030 Go Back Previous Next 140.01 Registration drive motor failure 141.01 Drum drive motor (K) failure StepAction and questionsYesNo 1Check the registration drive 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 Registration motor. Does the above component operate properly (motor rotating)? Go to step 3.Go to step 2. 2Check the registration drive motor for proper connection. Is the above component properly connected? Replace the registration drive motor. Go to “Registration drive motor removal” on page 4-144. 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 StepAction and questionsYesNo 1Check the drum 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 KCMY drum & transfer belt motor. Does the above component operate properly (motor rotating)? Go to step 3.Go to step 2.
2-64 Service Manual 5058-030 Go Back Previous Next 141.02 Drum drive motor (Y/M/C) failure 2Check the drum 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 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 StepAction and questionsYesNo 1Check the drum 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 KCMY drum & transfer belt motor. Does the above component operate properly (motor rotating)? Go to step 3.Go to step 2. 2Check the drum 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 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
Diagnostic information 2-65 5058-030 Go Back Previous Next 146.xx Tray 1 lift motor failure StepAction and questionsYesNo 1Check the sensor (tray 1 media level) on the tray 1 media feeder. Is the sensor properly attached? Go to step 2.Reattach the sensor. 2Check the sensor for proper operation. Navigate to: Diagnostics Menu > SENSOR TESTS > PRINTER SENSOR TESTS > Sensor (tray 1 media level) Does the display on the operator panel change every time the sensing area of the sensor is interrupted or blocked? Go to step 4.Go to step 3. 3Check the sensor for proper connection. Is it properly connected? Replace the sensor. Go to “Sensor (media level) removal” on page 4-151. Reseat the cable. 4Check the tray 1 media feed lift motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. Navigate to: Diagnostics Menu > MOTOR TESTS > PRINTER MOTOR TESTS > Tray1 Feed/Lift Motor Does it operate properly? Go to step 6.Go to step 5. 5Check the motor for proper connection. Is it properly connected? Replace the media feed lift motor. Go to “Media feed lift motor removal” on page 4-118. Reseat the cable. 6POR the machine and perform a print test. Does the error continue? Replace the tray media feeder. Go to “Printer tray 1 feeder removal” on page 4-141. Problem resolved. 7POR the machine and perform a print test. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Problem resolved.
2-66 Service Manual 5058-030 Go Back Previous Next 151.01 Transfer belt motor failure 151.02 First transfer contact/retract failure StepAction and questionsYesNo 1Check the transfer belt 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 Transfer belt motor. Does the above component operate properly (motor rotating)? Go to step 3.Go to step 2. 2Check the transfer belt motor for proper connection. Is the above component properly connected? Replace the transfer belt motor. Go to “PC/developer drive motor removal” on page 4-143. 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 StepAction and questionsYesNo 1Check the sensor (1st transfer rolls retract HP) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch SENSOR TESTS. 3. Touch PRINTER SENSOR TESTS. 4. Touch Sensor (1st transfer rolls retract HP). Does the display on the operator panel change every time the sensing area of the above sensor is interrupted or blocked? Go to step 3.Go to step 2.
Diagnostic information 2-67 5058-030 Go Back Previous Next 151.03 Second transfer contact/retract failure 2Check the sensor (1st transfer rolls retract HP) for proper connection. Is the above component properly connected? Replace the 1st transfer retract clutch assembly. Go to “1st transfer retract clutch assembly removal” on page 4-22. Replace the connections. 3Check the 1st BTR retract 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 1st transfer rollers retract motor (contracted). 5. Touch 1st transfer rollers retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5.Go to step 4. 4Check the 1st BTR retract motor for proper connection. Is the above component properly connected? Replace the 1st BTR retract motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” on page 4-102. Replace the connections. 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 sensor (2nd transfer roll retract HP) for proper operation. 1. Enter the Diagnostics Menu. 2. Touch SENSOR TESTS. 3. Touch PRINTER SENSOR TESTS. 4. Touch Sensor (2nd transfer roll retract HP). Does the display on the operator panel change every time the sensing area of the above sensor is interrupted or blocked? Go to step 3.Go to step 2. Step Action and questions Yes No
2-68 Service Manual 5058-030 Go Back Previous Next 154.01 Developer (Y/M/C) motor failure 2Check the sensor (2nd transfer roll retract HP) for proper connection. Is the above component properly connected? Replace the printer left duplex door assembly. Go to “Printer left duplex door assembly removal” on page 4-139. Replace the connections. 3Check the 2nd transfer roller retract motor for proper operation. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch PRINTER MOTOR TESTS. 4. Touch 1st transfer roller retract motor (contracted). 5. Touch 1st transfer roller retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5.Go to step 4. 4Check the 2nd transfer roller retract motor for proper connection. Is the above component properly connected? Replace the printer left duplex door assembly. Go to “Printer left duplex door assembly removal” on page 4-139. Replace the connections. 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 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 (motor rotating)? Go to step 3.Go to step 2. Step Action and questions Yes No
Diagnostic information 2-69 5058-030 Go Back Previous Next 155.01 Toner dispense motor (K) failure 2Check 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 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 StepAction and questionsYesNo 1Replace the toner cartridge. Does the error remain? Go to step 2.Problem resolved 2Check the toner smart chip PCB. Is the above component properly connected? Go to step 3.Replace the connections. 3Check 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 (motor rotating)? Go to step 5.Go to step 4. 4Check 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. 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
2-70 Service Manual 5058-030 Go Back Previous Next 156.01 Toner dispense motor (C) failure 157.01 Toner dispense motor (M) failure StepAction and questionsYesNo 1Replace the toner cartridge. Does the error remain? Go to step 2.Problem resolved 2Check the toner smart chip PCB. Is the above component properly connected? Go to step 3.Replace the connections. 3Check 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 C toner dispense motor. Does the above component operate properly (motor rotating)? Go to step 5.Go to step 4. 4Check 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. 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 1Replace the toner cartridge. Does the error remain? Go to step 2.Problem resolved 2Check the toner smart chip PCB. Is the above component properly connected? Go to step 3.Replace the connections.