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 > Isolation Touch Start.
Does the motor run? | Go to step 3. | Go to step 5. |
Step 3 Manually turn the isolation unit input rollers. Is there binding or uneven movement when turning the rollers? | Go to step 4. | Go to step 5. |
Step 4 Replace the isolation unit. See Isolation unit removal. Does the problem remain? | Go to step 5. | The problem is solved. |
Step 5 Check the cable on the motor and on the JMTR1 connector on the controller board for proper connection. Is the cable properly connected at both ends? | Go to step 7. | Go to step 6. |
Step 6 Reconnect the cable. Does the problem remain? | Go to step 7. | The problem is solved. |
Step 7 Check the cable for damage, and replace if necessary. Does the problem remain? | Go to step 8. | The problem is solved. |
Step 8 Replace the controller board. See Controller board removal. Does the problem remain? | Contact the next level of support. | The problem is solved. |