Daktronics BB-2140, Display Manual

Troubleshooting

9

Replacing a Driver

If the driver status indicators do not appear to be working correctly, it may be necessary 

to replace the driver.

1� 

Open the control enclosure by removing the 6 screws and swinging the door open.

2� 

Disconnect all plugs from the driver by squeezing together the locking tabs and 

pulling the connectors free. It may be helpful to label the cables or take a picture to 

know which plug goes to which jack when connecting the replacement driver.

3� 

Remove the 4 nuts securing the driver to the control enclosure door.

4� 

Carefully lift the driver from the enclosure and place it on a clean, flat surface.

5� 

Position a new driver over the screws and tighten the nuts.

6� 

Reconnect all plugs to their mating jacks on the driver. The connectors are keyed 

and will attach in one way only. Do not force the connections.

7� 

Ensure the new driver is set to the correct address. This will be the same address of the 

old driver being replaced. Refer to 

Setting the Driver Address (p�9)

.

8� 

Close and secure the enclosure door, then power up and test the display to verify the 

issue has been resolved.

Setting the Driver Address

Reference Drawings:

Schematic: Control Enclosure- 120/240V AC ..................................................

DWG-216653

Since the same LED drivers can be used for many display 

models, each driver must be set to receive the correct signal 

input, or address, for the model in which it is being used. 

This address is set with jumper wires in a 12-pin plug which mates 

with jack 

J1

 on the driver (

Figure 5

). After replacing the driver 

in the control enclosure, be sure to use an Address 1 plug in 

jack 

J1

. In most cases, the same plug can be reused from the 

driver that was replaced; otherwise, one may be ordered from 

Daktronics (part # 0A-1150-0122).

Note: 

For BB-2150 and BB-2151 to display 1/10 of a second, switch 8 of DIP switch 

S3

must be set to ON. Refer to 

DWG-216653

 for additional DIP switch settings.

Replacement Parts

The following table contains display components that may require replacement. Many of 

the other display components will have attached part number labels.

Description

Part Number

Address 1 Plug

0A-1150-0122

LED Light Strip, 28.875" (BB-2140)

0A-1322-0008

LED Light Strip, 20.5" (BB-2141)

0A-1322-0009

Cable; 6-pin to 6-pin, 30'

0A-1322-0011

Horn Enclosure Assembly

0A-1322-0015

Cable Holder Assembly

0A-1322-0016

Horn Interface Card

0P-1192-0399

7" Four-Digit w/ Colon, Dual-Sided, Amber (BB-2140 & BB-2150)

0P-1322-0001

13" 7-Segment, Dual-Sided, Red (BB-2140)

0P-1322-0002

HAZARDOUS VOLTAGE

BEFORE SERVICING

DISCONNECT POWER

Driver Status 

Indicators 

Shot Clock Driver

Horn Interface Card

Transformers

Figure 5: 

Address Jack J1