Brother MFC-9420CN Service Manual page 321

Individual machines have a serial number label for the machine itself and a property label for the
head/carriage unit.
This section lists the coding information for those serial numbers and property codes.
[ 1 ] Serial No. Descriptions
The descriptions as below show how to read labels on each place.
< ID for production month of Machine >
A: January
B: February
C: March
D: April
< ID for production month of other parts than the machine >
1: January
2: February
3: March
4: April
(1) Machine
<Location>
Right side of the machine
SERIAL NUMBERING SYSTEM
E: May
F: June
G: July
H: August
5: May
6: June
7: July
8: August
U 6 0 1 5 7 L 1 S 1 1 1 1 0 1
(120V)
MODEL NO.
J: September
K: October
L: November
M: December
9: September
X: October
Y: November
Z: December
FACTORY NO.
YEAR
MONTH
App. 1-1
SERIAL NO.
Confidential