Brother DCP-8070D Service Manual page 511

(3) Check the port (USB) that the machine is connected through and click "Serial No."
in the lower box.
Enter the serial number (the last nine digits) of the machine into the box on the
right hand side and click the [OK] button.
A confirmation window opens and shows the serial number. Check that it is correct
and click the [OK] button.
Note;
• Refer to " SERIAL NUMBERING SYSTEM in Appendix 3" to know how to
read the serial number of the machine.
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