Brother MFC-3340CN Service Manual page 300

SERIAL NUMBERING SYSTEM
Individual machines have a serial number label for the machine itself and a property label for the
head/carriage unit. Individual ink cartridges also have a serial number label.
This section lists the coding information for those serial numbers and property codes.
(1) Serial number label for the machine itself
Location
Lower cover
Serial number
Barcode
Serial number label
App. 1-1
Product item code
Serial number (6-digit)
Factory
Production year
(Example) 4 : 2004
5 : 2005
Production month
A : January G : July
B : February H : August
C : March J : September
D : April K : October
E : May L : November
F : M : December
June
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