Lexmark C 950 Service Manual
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Diagnostic information 2-71 5058-030 Go Back Previous Next 158.01 Toner dispense motor (Y) failure 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 M 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. Step Action and questions Yes No
2-72 Service Manual 5058-030 Go Back Previous Next 171.01 Controller cooling fan failure 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 Y 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 1Check the controller cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the controller cooling fan. Go to “Controller cooling fan removal” on page 4-47. Does the error continue? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the lower printer engine PCBA. Go to “Lower engine PCBA removal” on page 4-109. If the error remains 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 2-73 5058-030 Go Back Previous Next 171.02 Fuser cooling fan failure 172.01 Front upper cooling fan failure 173.01 LVPS sub cooling fan failure StepAction and questionsYesNo 1Check the fuser cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser cooling fan. Go to “Fuser cooling fan removal” on page 4-90. Does the error continue? Go to step 3.Problem resolved 3POR the machine. Does the error continue? Replace the lower printer engine PCBA. Go to “Lower engine PCBA removal” on page 4-109. If the error remains 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 front upper cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the front upper cooling fan. Go to “Front upper cooling fan removal” on page 4-88. Does the error continue? 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 LVPS sub cooling fan. Is the above component properly connected? Go to step 2.Replace the connections.
2-74 Service Manual 5058-030 Go Back Previous Next 174.01 Charge roll HVPS cooling fan failure 175.01 Front right cooling fan failure 2Replace the LVPS sub cooling fan. Go to “LVPS sub cooling fan removal” on page 4-121. Does the error continue? 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 charge roll HVPS cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the charge roll HVPS cooling fan. Go to “Charge roll HVPS cooling fan removal” on page 4-41. Does the error continue? 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 front right cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the front right cooling fan. Go to “Front right cooling fan removal” on page 4-86. Does the error continue? 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 Step Action and questions Yes No
Diagnostic information 2-75 5058-030 Go Back Previous Next 175.03 PC/developer drive motor cooling fan failure 175.04 Front left cooling fan failure 175.05 Suction fan failure StepAction and questionsYesNo 1Check the PC/developer drive motor cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the PC/developer drive motor cooling fan. Go to “PC/developer drive motor cooling fan removal” on page 4-142. Does the error continue? 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 front left cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the front left cooling fan. Go to “Front left cooling fan removal” on page 4-84. Does the error continue? 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 suction fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the suction fan. Go to “Suction fan removal” on page 4-173. Does the error continue? Go to step 3.Problem resolved
2-76 Service Manual 5058-030 Go Back Previous Next175.06 Center exhaust fan failure 175.07 Fuser driver PCBA cooling fan failure 175.08 Upper exhaust cooling fan 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 center exhaust fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the center exhaust fan. Go to “Center exhaust fan removal” on page 4-34. Does the error continue? 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 driver PCBA cooling fan. Is the above component properly connected? Go to step 2.Replace the connections. 2Replace the fuser driver PCBA cooling fan. Go to “Fuser driver PCBA cooling fan removal” on page 4-84. Does the error continue? 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 upper exhaust fan. Is the above component properly connected? Go to step 2.Replace the connections. Step Action and questions Yes No
Diagnostic information 2-77 5058-030 Go Back Previous Next 191.01 Lower engine PCBA detect failure 191.02–191.05 Upper engine PCBA fuse blown 2Replace the upper exhaust fan. Go to “Upper exhaust cooling fan removal” on page 4-190. Does the error continue? 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 1POR the machine. Does the error remain? Go to step 2.Problem resolved 2Check the lower engine PCBA. Is the above component properly connected? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Go to step 2. Replace the connections. 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 1POR the machine. 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 Step Action and questions Yes No
2-78 Service Manual 5058-030 Go Back Previous Next 191.06 Lower engine PCBA fuse 2 blown 191.07 Lower engine PCBA fuse 3 blown 191.08 Lower engine PCBA fuse 4 blown StepAction and questionsYesNo 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage. • LED printhead (Y, M, C, K) • Printhead interface contact (Y, M, C, K) Are the current and voltage values normal? Go to step 2.Replace the faulty parts. 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage: • Tray module controller PCBA • HCF Are the current and voltage values normal? Go to step 2.Replace the faulty parts. 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage: • Tray module controller PCBA • HCF Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits. 2POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Problem resolved
Diagnostic information 2-79 5058-030 Go Back Previous Next 191.09 Upper engine PCBA fuse 5 blown 191.10 Lower engine PCBA fuse 6 blown 191.11 Lower engine PCBA fuse 7 blown StepAction and questionsYesNo 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the finisher circuit for overcurrent and overvoltage. Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits. 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage: • Media transport/MPF drive motor • Media feed lift motor • Fuser pressure roll retract motor • Waste toner agitator motor Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits. 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage: • Fuser cooling fan • LVPS cooling fan • Rear left exhaust fan • Rear upper cooling fan • Front right cooling fan Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits.
2-80 Service Manual 5058-030 Go Back Previous Next 191.12 Lower engine PCBA fuse 8 blown 191.13 Lower engine PCBA fuse 9 blown 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the following parts circuits for overcurrent and overvoltage: • MPF tray feeder motor. • Upper redrive motor. • Duplex motor. Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits. 2POR 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 1Warning: Remove the cause of blown fuse before replacing the lower engine PCBA. Check the toner dispense motor (Y, M, C, K) for overcurrent and overvoltage. Are the current and voltage values normal? Go to step 2.Replace the faulty parts, or repair the circuits. 2POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” on page 4-101. Problem resolved Step Action and questions Yes No