Daktronics AB-1600-1.5,2.5 - Manual (Page 14)

Introduction 1-8
In addition, when using Daktronics drawings, it may also be helpful to know the following.
“F” denotes a fuse (F1, F2, F3…)
“T” denotes a transformer (T1, T2, T3)
“TB” denotes a termination block – power or signal.
“A” denotes an assembly. These are divided according to
power or signal.
A 2 0 3
First number denotes module line number.
The top line of modules is line 1.
Last two numbers denote position in that row,
counting left to right.
Used to differentiate display face if system has more than
one viewing face. "A" denotes first face, "B" the second, etc.
Figure 16: Module Numbering Detail