If you experience the error codes 6901 or 6910, disabling IPv6 on the printer may help to resolve the issue.  Follow the steps below to disable IPv6.
 

1. Press the Setup  button.
    
2. Use the  button to select Device settings, then press the OK button.
    
3. Use the  button to select LAN settings, then press the OK button.
    
4. Use the  button to select Other settings, then press the OK button.
    
5. Use the  button to select TCP/IP settings, then press the OK button.
    
6. Use the  button to select IPv6, then press the OK button.
    
7. The message [LAN communication may be disabled. Press [OK] to continue] will scroll across the display. Press the OK button.
    
8. Use the  button to select Enable/disable IPv6, then press the OK button
    
9. Use the  button to select Inactive, then press the OK button.