Daktronics AB-1600-1.5,2.5 - Manual (Page 62)

Maintenance & Troubleshooting 4-18
Vertical Shift Boards
A vertical shift board is found on the back on the left-most
lampbank in each row. It routes signal from the line receiver down
each row of lampbanks.
A vertical shift board is illustrated in Figure 59. The following is
a description of the connections on the vertical shift board.
J1 – Data Out: Signal is sent from this connector to the next
lampbank in a row.
J2 – Input: This connector receives signal from the line receiver
or the vertical shift board above it.
J3 – Output: Signal is sent from this connector to the vertical
shift board below.
Complete the following steps to remove a vertical shift board.
1. Remove the appropriate lens/reflector assembly as explained in Section 4.3.
2. Disconnect any remaining signal cables from the vertical shift board.
3. Remove the nut holding the board in place.
4. The board is now free to be removed from the lampbank.
4.12 Troubleshooting the Data Distributor
Reference Drawing:
Schematic; Col. Dir. Pwr. Supply ............................................................Drawing A-119453
If the display has a data distributor, this sub-section describes the functions of various components
within it. If the display has a line receiver, refer to Section 4.11. For a description of data distributors
and line receivers, refer to Section 1.2.
The receiver board and output cards in a data distributor work together to route display data from the
controller computer to the column director boards within the display. Figure 60 illustrates the receiver
board and outputs cards as they might appear in the data distributor.
Figure 59: Vertical Shift Board
Figure 60: Data Distributor – Receiver Board and Output Cards