Brother DCP-L8400CDN Service Manual page 508

APPENDIX 1 SERIAL NUMBERING SYSTEM
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Serial number labels for the printer itself
Model number
<Location>
Serial number
A 4 J 1 1 1 1 0 1
Serial number (6-digit)
Manufacturing factory No.
Year of manufacture
4: 2014
5: 2015
Month of manufacture
A: January
B: February
C: March
D: April
Fig. App 1-1
Serial number label
Fig. App 1-2
App.1-1
E: May J: September
F: June K: October
G: July L: November
H: August M: December
Serial number label
Fig. App 1-3
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