Panasonic UF-580 Service Manual page 16

1.3.1. Serial Number Contents
The contents of the 11-digit Serial Number is as follows:
Note:
Model UF-580 / 590 / 780 / 790 will utilize this format starting with first production.
1 2 3 4 5 6 7 8
Sequential Production Number
5-Digit Sequential Production Number
00001 ~ 99999 = 1 ~ 99,999 units
A0001 ~ Y9999 = 100,000 ~ 329,976 units
(Letters "I" and "O" are skipped)
Model Number and Destination Code (Main Unit)
3-Digit number or alphanumeric representation
(Except Letters "I" and "O")
For Example:
2AU = UF-790-AU
2AT = UF-590-AB
3LW = UF-780-AU
35S = UF-580-AB
Production Facility
Production Year
Starting with Year 2001, the last 2-digits of the year is
represented as: A ~ T
A : 01 (2001)
B : 02
C : 03
D : 04
E : 05
F : 06
G : 07
H : 08
I : 09
J : 10 (2010)
Production Month
A : January
B : February
C : March
D : April
E : May
F : June
16
9 10 11
K : 11 (2011)
L : 12
M : 13
N : 14
O : 15
P : 16
Q : 17
R : 18
S : 19
T : 20 (2020)
G : July
H : August
I : September
J : October
K : November
L : December