Step 1  Enter the Diagnostics menu, and then navigate to: Printer diagnostics & adjustments > Sensor tests Find the sensor (Door interlock).
Does the sensor status change while toggling the sensor? | The problem is solved. | Go to step 2. |
Step 2 Check the sensor cable for proper connection. Is the cable properly connected? | Go to step 4. | Go to step 3. |
Step 3 Reconnect the cable. Does the problem remain? | Go to step 4. | The problem is solved. |
Step 4 Remove the motor cover, and then check the interlock cable relay for proper connection. Is the cable properly connected? | Go to step 6. | Go to step 5. |
Step 5 Reconnect the cable. Does the problem remain? | Go to step 6. | The problem is solved. |
Step 6 Check the front door interlock switch actuator for damage. Is the actuator free of damage? | Go to step 8. | Go to step 7. |
Step 7 Replace the duplex outer guide. See Duplex outer guide removal. Does the problem remain? | Go to step 8. | The problem is solved. |
Step 8 Check the toner door interlock switch actuator for damage. Is the actuator free of damage? | Go to step 10. | Go to step 9. |
Step 9 Replace the toner door. See Toner door removal. Does the problem remain? | Go to step 10. | The problem is solved. |
Step 10 Replace the motor cover. See Motor cover removal. Does the problem remain? | Go to step 11. | The problem is solved. |
Step 11 Replace the controller board. See Controller board removal. Does the problem remain? | Contact the next level of support. | The problem is solved. |