Daktronics DF-12xx - Manual (Page 16)

1-6 Introduction
Mirror/slave: receives power and a digit harness from the master but does not have
a driver.
Power Supply: Converts AC line voltage from the load center to low DC voltage
for one or more digit circuit boards.
Protocol plug: The protocol 4-plug is inserted in the 5-pin protocol jack to select the
host driver for a set of host-client displays.
1.5 Daktronics Nomenclature
To fully understand some Daktronics drawings, such as schematics, it is necessary to
know how various components are labeled in those drawings. You will find this
information useful when trying to communicate maintenance or troubleshooting
efforts.
The following labeling formats might be found on various Daktronics drawings:
• “TB _ _” denotes a termination block for power or signal cable.
• “E _ _” denotes a grounding point.
• “J _ _” denotes a power or signal jack.
• “P _ _” denotes a power or signal plug for the opposite jack.
Finally, Daktronics part numbers are commonly found on drawings. Those part
numbers can be used when requesting replacement parts from Daktronics Customer
Service. Take note of the following part number formats. (Not all possible formats
are listed here.)
• “0P- _ _ _ _- _ _ _ _” denotes an individual circuit board, such as a driver
board.
• “0A-_ _ _ _ - _ _ _ _” denotes an assembly, such as a circuit board and the
plate or bracket to which it is mounted. A collection of circuit boards
working as a single unit may also carry an assembly label.
• “W- _ _ _ _ ” denotes a wire or cable. Cables may also carry the assembly
numbering format in certain circumstances. This is especially true for
ribbon cables.
Most circuit boards and components within this display carry a label that lists the
part number of the unit. If a circuit board or assembly is not listed in the
Replacement Parts List in Section 4.6, use the label to order a replacement. A
typical label is shown in
Figure 3 . The part number is in bold.
Figure 3: Typical Label