Step 1 Reset the printer. Does the problem remain? | Go to step 2. | The problem is solved. |
Step 2  Enter the Diagnostics menu, and then navigate to: Printer diagnostics & adjustments > Motor tests > Duplex/MPF Touch Start.
Does the motor run? | Go to step 3. | Go to step 5. |
Step 3 Open the front door, and then manually turn the duplex/MPF drive gears. Is there binding in the gears? | Go to step 4. | Go to step 5. |
Step 4 Replace the motor. See Motor (duplex/MPF) removal. Does the problem remain? | Go to step 5. | The problem is solved. |
Step 5 Check the motor cable for proper connection and damage, and replace if necessary. Does the problem remain? | Go to step 6. | The problem is solved. |
Step 6 Replace the controller board. See Controller board removal. Does the problem remain? | Contact the next level of support. | The problem is solved. |