Daktronics COLORSMART BB-3146 User manual

201 Daktronics Drive
Brookings, SD 57006-5128
www.daktronics.com/support
800.325.8766
COLORSMART®
INDOOR LED SCOREBOARDS
SERVICE MANUAL
P1763
DD2507404
Rev 07
25 August 2021
Models
BB-3101 BB-3114 BB-3146
BB-3102 BB-3115 BB-3147
BB-3103 BB-3121 SD-3101
BB-3104 BB-3123 SD-3102
BB-3105 BB-3124 SD-3103
BB-3106 BB-3125 SD-3106
BB-3107 BB-3126 TI-3103
BB-3108 BB-3142

Copyright © 2013-2021
All rights reserved. While every precaution has been taken in the preparation of this manual, the publisher assumes no
responsibility for errors or omissions. No part of this book covered by the copyrights hereon may be reproduced or copied
in any form or by any means—graphic, electronic, or mechanical, including photocopying, taping, or information
storage and retrieval systems—without written permission of the publisher.
Daktronics trademarks are property of Daktronics, Inc. All other trademarks are property of their respective companies.
FCC Statement
Supplier Declaration of Conformity (SDoC)
This product complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
Note: This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against
harmful interference when the equipment is operated
in a commercial environment. This equipment
generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance
with the instruction manual, may cause harmful
interference to radio communications. Operation of
this equipment in a residential area is likely to cause
harmful interference in which case the user will be
required to correct the interference at their own
expense.
Warning: The user is cautioned that changes and
modications made to the equipment without the
approval of manufacturer could void the user’s
authority to operate this equipment.
Industry Canada Regulatory Information
This Class A digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe A est conforme à
la norme NMB-003 du Canada.
Inquiries
Contact Daktronics with any questions regarding our
product compliance.
Mail:
Daktronics
201 Daktronics Dr.
Brookings, SD 57006 USA
Phone:
800-325-8766
Website:
www.daktronics.com

– i –
Table of Contents
1 Introduction���������������������������������������������������������������������������������������������������������������������������1
Important Safeguards ..........................................................................................................................1
Specications Label .............................................................................................................................1
Resources ..............................................................................................................................................1
Daktronics Nomenclature ...................................................................................................................2
Product Safety Approval .....................................................................................................................2
2 Troubleshooting ��������������������������������������������������������������������������������������������������������������������3
Troubleshooting Table..........................................................................................................................3
Component Locations and Access ...................................................................................................5
Replacing Digits....................................................................................................................................5
LED Drivers .............................................................................................................................................6
Replacing a Driver����������������������������������������������������������������������������������������������������������������������������7
Setting the Driver Address ���������������������������������������������������������������������������������������������������������������7
Multiple Drivers ���������������������������������������������������������������������������������������������������������������������������������8
Radio Connections...............................................................................................................................8
Radio Interference����������������������������������������������������������������������������������������������������������������������������9
Segmentation and Digit Designation...............................................................................................10
Schematics..........................................................................................................................................10
Replacement Parts.............................................................................................................................10
3 TNMC and Electronic Caption Troubleshooting ��������������������������������������������������������������12
Display Overview ................................................................................................................................12
Initialization Information at Startup...................................................................................................12
Troubleshooting ..................................................................................................................................13
Power and Signal Summary ..............................................................................................................13
Component Locations and Access .................................................................................................14
Replacing a Component ..................................................................................................................14
Display Maintenance.........................................................................................................................15
Replacement Parts.............................................................................................................................15
4 Daktronics Exchange and Repair & Return Programs ����������������������������������������������������16
Exchange Program ............................................................................................................................16
Repair & Return Program...................................................................................................................17
Daktronics Warranty & Limitation of Liability ...................................................................................17
A Specications����������������������������������������������������������������������������������������������������������������������19
B Schematics��������������������������������������������������������������������������������������������������������������������������21
C Drawings������������������������������������������������������������������������������������������������������������������������������23
D Daktronics Warranty & Limitation of Liability��������������������������������������������������������������������25

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Introduction
1
1 Introduction
This manual explains the troubleshooting and service of Daktronics ColorSmart®Indoor
LED Scoreboards, Game/Shot Clocks, Statistics Panels, and Timing Displays. For additional
information regarding safety, installation, operation, or service, refer to the telephone
numbers listed in Section 4: Daktronics Exchange and Repair & Return Programs (p�16).
This manual is not specic to a particular installation.
Important Safeguards
• Read and understand all instructions before servicing the display�
• Disconnect the display power when not in use or when servicing�
• Disconnect the display power before servicing power supplies to avoid electrical
shock� Power supplies run on high voltage and may cause physical injury if touched
while powered�
• Do not modify the structure or attach any panels or coverings to the display without
the express written consent of Daktronics�
• Do not disassemble control equipment or electronic controls of the display; failure to
follow this safeguard will make the warranty null and void�
• Do not drop the control equipment or allow it to get wet�
Specications Label
Power specications as well as serial and model number information can be found on an
ID label afxed to the top of the display, similar to the one shown in Figure 1.
Note: If something mounted above the display obscures this label, a copy of this label
can be found behind the PRIMARY DRIVER access panel.
DAKTRONICS 201 DAKTRONICS DR. BROOKINGS, SD PHONE [phone]
SUITABLE FOR SERVICING ONLY WHEN DE-ENERGIZED
PUET FAIRE L'OBJET D'UN ENTRETIEN UNIQUEMENT S'IL EST HORS TENSION
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO
CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE AND (2) THIS DEVICE MUST
ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION
CONFORMS TO
UL STD 48
CERTIFIED TO CSA
STD C22.2 NO. 207
17800
BB-3101-CS-UV-120
RMN: DAKT-0405-00
120 V ~: 50/60Hz
MAX AMPS AC: V ~: 1A
MAX WATTS AC: 100W
0A-1763-0001 HRev: 00
SN: 1001
05/22/19
3219728 0001
Product Number Model Number
Figure 1: Specications Label
Please have the assembly number, model number, and the date manufactured on hand
when calling Daktronics customer service to ensure the request is serviced as quickly as
possible. Knowing the facility name and/or job number will also be helpful. Note that the
Product Number(s) are sometimes used to distinguish different generations of displays
that have the same model number.
Resources
Figure 2 illustrates a Daktronics drawing label.
This manual refers to drawings by listing the last
set of digits. In the example, the drawing would
be referred to as DWG-1007804. All references to
drawing numbers, appendices, gures, or other
manuals are presented in bold typeface.
Drawing Number
Figure 2: Drawing Label

Introduction
2
Any drawings referenced in a section are listed at the beginning of it as shown below:
Reference Drawings:
System Riser Diagram....................................................................................... DWG-1007804
Daktronics identies manuals by the DD or ED number located on the cover page.
Listed below are drawing types commonly used by Daktronics, along with the information
typically provided. All drawings referenced in this manual are found in the appendices.
• Schematic Drawings: describe internal power and signal wiring as well as
interconnections between display sections; they may also include digit designations
and driver addressing information
• Shop Drawings: describe mounting methods to structural elements, access method
(front or rear), and power and signal entrance points
• System Riser Diagrams: describe power/signal connections between components
and the control location; they may also include control room layout and schematic
• Final Assembly Drawings: describe internal display component locations and
detailed product appearance with part numbers and quantities
Project-specic information takes precedence over any other general information found
in this manual. Ensure all applicable materials have been gathered before servicing.
Contact a Daktronics sales coordinator or project manager.
Daktronics Nomenclature
Most display components have a white label that lists the part
number (Figure 3). Part numbers will also appear on certain drawings.
If a component is not found in the Replacement Parts (p�10), use
the label to order a replacement. Refer to Section 4: Daktronics
Exchange and Repair & Return Programs (p�16) if replacing or
repairing any display component.
Main Component Labels
Part Type Part Number
Individual circuit board 0P-XXXX-XXXX
Assembly; a collection of
circuit boards 0A-XXXX-XXXX
Wire or cable W-XXXX
Fuse F-XXXX
Transformer T-XXXX
Metal part 0M-XXXXXXX
Fabricated metal assembly 0S-XXXXXX
Specially ordered part PR-XXXXX-X
Product Safety Approval
Daktronics indoor displays are ETL-listed, tested to CSA standards, and CE-labeled.
Contact Daktronics with any questions regarding testing procedures.
0P-1127-0024
SN: 2465
02/19/12 Rev. 1
Figure 3: Part Label
Accessory Labels
Component Label
Termination block for
power or signal cable TBXX
Grounding point EXX
Power or signal jack JXX
Power or signal plug for
the opposite jack PXX

Troubleshooting
3
2 Troubleshooting
Disconnect power before doing any repair or maintenance work on the display�
Permitonlyqualiedservicepersonneltoaccessinternaldisplayelectronics.
Disconnect power when not using the display�
Troubleshooting Table
This section lists potential problems with the system, indicates possible causes, and
suggests corrective action. This list does not include every possible problem, but it does
represent some of the more common situations that may occur.
Problem Possible Cause Solution/Items to Check
Display does not light,
and console does not
work
No power to the display
Check that the main circuit breaker for the
display is on.
Check that the display is receiving 120
VAC power.
No power to the control
console
Ensure the console is plugged into a 120
VAC power supply.
Exchange the console with a working one,
and enter the correct sport code and/or
radio settings to test. Replace console if
necessary.
Display digits do not
light, but console works
No wired signal from
control console
Check that the display is receiving 120
VAC power.
Check that the red DS2 LED on the driver
lights up when sending commands from
the controller; see LED Drivers (p�6).
No radio signal from
control console
Verify that both the console and display
antennas are securely tightened and in a
vertical position.
Keep the console 20–500' (6–152 m) away
from the display. Check that the green
POWER and amber RADIO IN RANGE
indicators on the radio receiver in the
display light up when the control console is
powered on. Move the console 20–30' (6–9
m) from the display and test again.
Replace the radio receiver.
No signal to driver
Check that the display is receiving 120
VAC power.
Check that the red DS2 LED on the driver
lights up when sending commands from
the controller. See LED Drivers (p�6).
Exchange the driver with a working one of
the same part #. Replace if necessary. See
LED Drivers (p�6).
No power to driver
Check that the green DS1 LED on the driver
remains lit up when the display is powered
on. See LED Drivers (p�6).

Troubleshooting
4
Problem Possible Cause Solution/Items to Check
Display digits light, but
not in the correct order
Incorrect sport code
Ensure the correct sport code is being used
for the display model. Refer to the All Sport
5500 Control Console Operation Manual
(ED-16809).
Incorrect driver address
Ensure all drivers are set to the correct
address. See Setting the Driver Address
(p�7).
Digits light, console
works, but nothing
displays
No wired signal from
control console (see solution on previous page)
No radio signal from
control console (see solution on previous page)
Bad/damaged eld
wiring
Check that the red DS2 LED on the driver
lights up when sending commands from
the controller. See LED Drivers (p�6).
Display works, but some
LEDs always stay on
Short in digit or indicator
circuit
Exchange the digit/indicator with a
working one of the same part # to verify
the problem. Replace if necessary. See
Replacing Digits (p�5).
Display works, but some
LEDs do not light or they
blink
Bad connection Verify the connector on the back of the
digit circuit board is secure.
Bad digit or driver
Exchange the digit or driver with a
working one of the same part # to verify
the problem. Replace if necessary. See
Replacing Digits (p�5) or LED Drivers
(p�6).
Display works, but some
digits do not light
Bad digit or driver (see solution above)
Incorrect sport code (see solution above)
Incorrect driver address (see solution above)
Wrong console
controlling the
scoreboard
Another console’s radio signal may be
transmitting to the display. For example,
two basketball scoreboards in different
gyms that are within 500' (152 m) of
each other. Change the radio settings as
described in Radio Connections (p�8).
Radio Interference
There may be other radio transmissions in
the area that overpower the console.
If it is not possible to disable the interfering
device, it may be necessary to run a wired
signal connection instead.
Display works, but one
section of digits does
not light
Bad multi-section
connection
Verify power/signal interconnects between
display sections are properly connected.
Refer to appropriate schematic drawings.
Bad transformer
Exchange the transformer with a working
one of the same part # to verify the
problem. Replace if necessary.

Troubleshooting
5
Component Locations and Access
All internal electronic components and digits are reached by opening a digit panel on
the front of the display.
Digit panels are typically held in place on the
display face by screws. To remove a digit,
simply unfasten the screws and carefully lift it
from the cabinet. The power/signal plug can
then be removed from the connector on the
back of the digit to completely free the digit
and access internal components.
Component location varies with each model, but drivers and power and signal
components are typically mounted inside the cabinet behind a digit panel. To locate
the driver(s), look for a warning label similar to that shown in Figure 4.
Replacing Digits
LEDs are embedded in a circuit board that is mounted to the back of the digit panel.
Do not attempt to remove individual LEDs. In the case of a malfunctioning LED or digit
segment, replace the entire digit circuit board. To replace a digit circuit board (Figure 5):
Stud Standoff
Digit Panel Digit Circuit
Board
Light Diffuser
Assembly
Power/
Signal IN
Nut
Figure 5: UniView Digit Assembly
1� Open the digit panel as described in Component Locations and Access (p�5).
2� Disconnect the 9-pin plug from the back of the digit by squeezing the locking tabs
together and pulling the connector free.
3� Use a 9/32" nut driver to remove the nuts securing the digits to the aluminum
standoffs, and then lift the digit off the standoff/diffuser assembly.
4� Position a new digit over the standoffs, and then tighten the nuts. It may be necessary
to also tighten the standoffs if they became loose while removing the nuts.
5� Reconnect the 9-pin plug. This is a keyed connector and it will attach in one way
only. Do not force the connection.
6� Secure the digit panel to the display face with the four screws, and then power up
and test the display to verify the issue has been resolved.
BEHIND THIS PANEL
DRIVER IS LOCATED
PRIMARY
Figure 4: Power Warning Label

Troubleshooting
6
LED Drivers
Reference Drawings:
4 Column LED Driver II; Specications .............................................................. DWG-123783
Specications; Driver, MCAST, 16 Col............................................................... DWG-284554
LED drivers perform the task of switching digits on and off within the display. LED drivers
are mounted to a driver tray. Refer to Figure 6 to view the location and components of a
driver tray.
TRANSFORMER
105
BRNTAN
94
PNK
72
ORG
83
61
WHTBLU
83
TRANSFORMER
PNK
BRN
105
TAN
94
WHTBLU
72
ORG
61
CR1
AC
AC
AC
AC
1
RED BLK
2
PNK
3
TAN
4
SIGNAL OUT
SIGNAL IN
CUR. LOOP
SIGNAL
TB-31
POWER IN
J-3
J-1
HORN OUT
CR2
1
BLU ORG
2
PNK
3
TAN
4
POWER
TB-42 POWER
1234
BEFORE SERVICING.
DISCONNECT POWER
AT EXPOSED TERMINALS.
HAZARDOUS VOLTAGE
TENSION DANGEREUSE
À TERMINAUX EXPOSÉS.
DÉBRANCHEZ L'ÉLECTRICITÉ
AVANT L'ENTRETIEN.
H L
012
3
4
5
6
7
8
9
A
B
C
D
EF
012
3
4
5
6
7
8
9
A
B
C
D
EF
H L
012
3
4
5
6
7
8
9
A
B
C
D
EF
012
3
4
5
6
7
8
9
A
B
C
D
EF
ColorSmart
Driver Tray
Signal Terminal BlockPower Terminal Block
Horn Interface
Card
Transformers Multicast
LED Driver
Driver Status
Indicators
Driver Status
Indicators
16-Column
LED Driver
Signal Terminal Block
Transformers
PanaView/UniView
Driver Tray
PanaView/UniView
Driver Tray (19 VDC)
Driver Status
Indicators
16-Column
LED Driver
Signal Terminal
Block
Power Terminal
Block
Figure 6: Driver Tray Components
All ColorSmart scoreboards and ColorSmart-compatible statistics displays use 16-column
Multicast drivers, while some smaller displays use 4-column drivers. Several models
contain more than one driver to accommodate all of the digits and indicators. Refer
to the drawings attached to the product specication sheets listed in Appendix A to
determine the type and number of drivers for a particular scoreboard model. Also refer
to Appendix B for schematic drawings.
When troubleshooting driver problems, several LEDs provide diagnostic information. The
number of LEDs and their function depends on the driver type.
Note: While it is necessary to have the display powered on to check the LED status
indicators, always disconnect power before servicing.
LED Color Function Operation Summary
DS1
DS2 Green Power Steady on DS1 (16-column) / DS2 (4-column) will be on and steady to indicate the driver has power.
DS2
DS1 Red Signal RX Steady on or blinking
DS2 (16-column) / DS1 (4-column) will be on or
blinking when the driver is receiving a signal and
off when there is no signal.
DS3 Amber Status Blinking
DS3 (16-column) will be blinking at one second
intervals to indicate the driver is running (not
available on 4-column LED drivers).
• Refer to DWG-284554 in Appendix C for detailed driver pin out/switch specications
of 16-column drivers.
• Refer to DWG-123783 in Appendix C for detailed driver pin out/switch specications
of 4-column drivers.

Troubleshooting
7
Replacing a Driver
1� Open the digit panel nearest the driver as described in Component Locations and
Access (p�5).
2� Disconnect all plugs from the driver by squeezing the locking tabs together 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 nuts securing the driver to the driver tray.
4� Carefully lift the driver from the display and place it on a clean, at 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�7).
8� Close and secure the access panel, and then power up and test the display to verify
the issue has been resolved.
Setting the Driver Address
Reference Drawings:
Address Table, 1 Through 128............................................................................ DWG-115078
Address Table; Driver, MCAST, Address Jack .................................................. DWG-284771
Address Table; Driver, MCAST, Add DIP Switch............................................... DWG-284772
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. Addresses are set through the S1 DIP switch on the
driver (Figure 7) using a pen or small, pointed object.
When setting the driver address, rst refer to the tables
on the following page to determine the correct address
setting of the driver(s) in a particular scoreboard model.
Then see DWG-284772 in Appendix C for addressing
information for driver addresses 1 – 128.
ColorSmart and 4-column LED drivers also have the option of
setting the address using jumper wires in a 12- or 16 pin plug
which mates with jack J19 on the driver (Figure 8). It may be
possible to reuse the same address plug from the driver that
was replaced. If not, rst refer to the tables on the following
page to determine the correct address setting of the driver(s)
in a particular scoreboard model. Then see DWG-284771 in
Appendix C for a listing of the wire/pin connections for driver
addresses 1 – 128 for ColorSmart drivers, or refer to DWG-
115078 for 4-column LED drivers.
Figure 7: Driver Address DIP Switch
Figure 8: J19 Address Jack

Troubleshooting
8
Model Driver #
& Address
BB-3101
BB-3102
BB-3103
BB-3104
BB-3105
BB-3106
BB-3107
BB-3108
BB-3121
BB-3125
BB-3126
BB-3142
BB-3146*
BB-3147*
A1 17
BB-3123 BB-3124 A1 17
A2 14
* These displays are composed of scoreboards and LED message centers. Refer to the
message center manual for more information on specications, operation, and servicing.
Multiple Drivers
Displays that require multiple drivers operate using a primary/secondary driver
conguration. The two drivers have been designed to simply plug into one another, and
this is done at the factory, so no additional on-site connection is necessary.
If it appears as though only a certain group of digits on the scoreboard is not functioning,
there may be a problem with the secondary driver(s) or the power/signal connection
from the other driver(s).
Radio Connections
To determine the radio connection settings between the display and control console,
rst power off any radio-equipped consoles in the area, then cycle power to the display,
and watch for the radio settings. These settings appear in different locations based on
the scoreboard layout:
• When using the All Sport 5500 console, the
display will show “bX CY” where X is the
Broadcast group number and Y is the Channel
number. The default is b1C1.
• If there is a clock, the settings appear in the
rst four clock digits (Figure 9).
• If there is no clock, the settings should appear
in the Home and Guest score digits, but this
may vary by scoreboard model.
If these settings do not appear, the radio receiver may need to be repaired/replaced.
To make sure the console radio settings match the receiver in
the display, refer to the appropriate control console manual.
Model Driver #
& Address
SD-3101
SD-3102
Left (Home):
A1 23
A2 24
Right (Guest):
A1 25
A2 26
BB-3114 A1 2
BB-3115 A1 1
TI-3103 A1 1
Model Driver #
& Address
SD-3103
Left (Home):
A1 23
A2 27
A3 24
Right (Guest):
A1 25
A2 28
A3 26
SD-3106 A1 15
daktronics
PERIOD GUESTHOME
BB
daktronics
PERIOD GUESTHOME
BB
All Sport / RC-200 / DAK Score
RC-100
Figure 9: Radio Settings in Clock Digits
RADIO SETTINGS
BCAST 1 CHAN 01

Troubleshooting
9
Radio Interference
If it has been determined that a nearby display’s radio signal is interfering, the settings of
the radio receiver inside the display(s) must be changed.
1� To locate the radio receiver, simply look for the black antenna sticking out the front
of the display. Component Location drawings also show the exact position where the
radio receiver will be mounted.
2� Open the access panel to which the
receiver is attached as described in
Component Locations and Access (p�5).
3� The radio receiver has a plastic cover with a
window to view status indicators (Figure 10).
Note: While it is necessary for the display
to be powered on to check the
indicators, always disconnect power
before servicing.
4� Remove the four screws in each corner using
a #2 Philips screwdriver and lift off the cover.
5� The process of changing the radio settings
depends on the generation of the radio.
Refer to the instructions below and Figure 11.
• Gen V (blue label): Use a small athead screwdriver to set the CHAN switch to a
new channel (1-8). Move the jumper wire on the J4 or J5 BCAST jacks to a new
broadcast group (1-4) as needed.
• Gen VI (gray label): Use a small athead screwdriver to set the CHAN and BCAST
switches to a new channel and broadcast group (1-8) as needed. Be sure to
always leave FUNC set to “1”.
6� Screw the cover back on and securely close the access panel.
7� Enter the correct sport code and new radio settings into the console to test the radio
control (refer to the appropriate control console manual).
Refer to the Gen V Radio Installation Manual (ED-13831)or Gen VI Radio Installation
Manual (DD2362277)for more information.
2.4GHZ
LL-2567
REV 01
POWER
RADIO IN RANGE
DATA OUT
DAKTRONICS
WIRELESS RECEIVER
Status Indicators
Remove Cover to
Access Switches
Figure 10: Radio Receiver w/ Cover
FUNC CHAN BCAST
X1
X2
J4
0
0
0
1
1
1
CHAN
GEN V GEN VI
BCAST
CHAN
FUNC
Jumper may only be set to one
BCAST setting at any time
BCAST 1
BCAST 2
BCAST 3
BCAST 4
Figure 11: Radio Receiver Switches

Troubleshooting
10
Segmentation and Digit Designation
Reference Drawings:
Segmentation, 7 Segment Bar Digit ................................................................... DWG-38532
Segmentation, Color or Mono 7 Segment Digit.............................................. DWG-308053
In each digit, certain LEDs always go on and off together. These groupings of LEDs are
referred to as segments. DWG-38532 and DWG-308053 in Appendix C detail which
connector pin is wired to each digit segment and the wiring color code used throughout
the display.
The drawings attached to the product specication sheets listed in Appendix A also
specify the driver connectors controlling the digits. Numbers shown in the upper half of
each digit indicate which connector is wired to that digit.
Schematics
For advanced troubleshooting and repair, it may be necessary to consult the schematic
drawings. Listed in Appendix B, schematic drawings show detailed power and signal
wiring diagrams of internal display components such as drivers, horn interface cards,
and transformers as well as optional components like TNMCs, radio receivers, and end of
period (EOP) lighting.
Replacement Parts
The following table contains display components that may require replacement. Many of
the other components will have attached part number labels.
Description Part Number
Horn, 120V with capacitor 0A-1152-0332
Digit, 13" UniView, red LED, 7-seg 0P-1230-0027
LED driver, MCAST, 16-column 0P-1388-0100
LED driver, MCAST, 4-column 0P-1388-0101
Digit, 7" ColorSmart, red LED, 7-seg 0P-1388-1018
Digit, 7" ColorSmart, amber LED, 7-seg 0P-1388-0020
Digit, 7" ColorSmart, multicolor LED, 7-seg 0P-1388-1017
Digit, 7" ColorSmart, red LED, 2-seg 0P-1388-1030
Digit, 7" ColorSmart, amber LED, 2-seg 0P-1388-0032
Digit, 7" ColorSmart, multicolor LED, 2-seg 0P-1388-1029
Digit, 10" ColorSmart, red LED, 7-seg 0P-1388-1303
Digit, 10" ColorSmart, amber LED, 7-seg 0P-1388-0304
Digit, 10" ColorSmart, multicolor LED, 7-seg 0P-1388-1302
Digit, 10" ColorSmart, red LED, 2-seg 0P-1388-1307
Digit, 10" ColorSmart, amber LED, 2-seg 0P-1388-0308
Digit, 10" ColorSmart, multicolor LED, 2-seg 0P-1388-1306
Digit, 13" ColorSmart, red LED, 7-seg 0P-1388-1311
Digit, 13" ColorSmart, amber LED, 7-seg 0P-1388-0312
Digit, 13" ColorSmart, multicolor LED, 7-seg 0P-1388-1310
Digit, 13" ColorSmart, red LED, 2-seg 0P-1388-1315
Digit, 13" ColorSmart, amber LED, 2-seg 0P-1388-0316

Troubleshooting
11
Description Part Number
Digit, 13" ColorSmart, multicolor LED, 2-seg 0P-1388-1314
Colon, 1 pos red LED 0P-1388-0319
Colon, 1 pos amber LED 0P-1388-0320
Colon, 1 pos multicolor LED 0P-1388-1318
Indicator, 1 pos red LED 0P-1388-0025
Indicator, 1 pos amber LED 0P-1388-0026
Indicator, 3 pos amber/red 0P-1388-0027
Power supply, 12V, 85-264VAC, 150W A-2855
Transformer, 115/230 V @ 2 A T-1063
Transformer, 115/230 V @ 6.25 A T-1066
Cable, 20' phone plug W-1236
Cable, 50' phone plug W-1237
Cable, 30' phone plug W-1238
Cable, 10' phone plug W-1340
Refer to Section 4: Daktronics Exchange and Repair & Return Programs (p�16) for
information on exchanging or returning parts.

TNMC and Electronic Caption Troubleshooting
12
3 TNMC and Electronic Caption Troubleshooting
Disconnect power before doing any repair or maintenance work on the display�
Permitonlyqualiedservicepersonneltoaccessinternaldisplayelectronics.
Disconnect power when not using the display�
Display Overview
Team Name Message Centers (TNMCs) are programmable LED displays that can show
custom Home and Guest names or messages of about 15 characters in place of static
vinyl captions. TNMCs are typically factory-installed, but they can also be added later,
after the scoreboard has been mounted. Characters are shown on one line using single-
or double-stroke fonts 6" (152 mm) high.
Electronic captions, on the other hand, are pre-programmed to only show specic labels
to match the captions for a particular sport mode, making it much simpler to switch
between sports. Characters are shown on one line using single-stroke fonts.
Primary TNMC matrix size is 8x48 with 0.75” (19 mm) pixel spacing. Figure 12 shows
examples of both TNMCs and electronic captions.
TNMC Electronic
Caption
daktronics
BB
PERIOD
FOULS PLAYER FOUL FOULS
SCORE SCORE
MATCH
BB
PLY FL PTS PLY FL PTS
BEARSTIGERS
Figure 12: Basketball Scoreboard with TNMCs and Electronic Captions
Matrix Size Weight* # of 8x16
Modules Active Display Area Pixel Spacing
8x48 15 lb (7 kg) 3 6" x 36" (152 mm x 914 mm) 0.75" (19 mm)
* Weight shown is for a pair of displays.
Initialization Information at Startup
Each time the display is powered up and there is no All Sport signal present, the display
runs through an initialization process during which it tests all LEDs and addresses. The
message center rst displays the proper address number.
If the entire display fails at startup, power may not be properly connected or the address
setting may not be correct on the display driver. Check both in the event of a failure.

TNMC and Electronic Caption Troubleshooting
13
Troubleshooting
The table below lists potential problems with the display and indicates corrective actions.
This list does not include every symptom that may be encountered, but it does present
several of the most common situations that may occur.
Problem Solution/Items to Check
One or more LEDs on a single
module fails to light or turn off
Check/replace the ribbon cables on the module.
Replace the module. See Replacing a Component
(p�14).
A section of the display is not
working; section extends all the
way to the right side of the display
Replace the rst module on the right side of the rst module
that is not working. See Replacing a Component (p�14).
Replace the second module that is not working. See
Replacing a Component (p�14).
Replace the power supply assembly on the rst module that
is not working. See Replacing a Component (p�14).
Check/replace the ribbon cables running to the rst
module that is not working.
One row of modules does not work
or is garbled.
Replace the rst module. See Replacing a Component
(p�14).
A group of modules which shares
the same power supply assembly
fails to work.
Replace the power supply assembly. See Replacing a
Component (p�14).
Entire display fails to work.
Check for proper line voltage into the power termination
panel.
Check/replace the ribbon cable from the driver to the
modules.
Check the voltage settings on the power supplies.
Check/replace the signal cable to the driver.
Power and Signal Summary
Reference Drawings:
Address Table; Driver- MCAST- TNMC DIP Switch............................................ DWG-284773
Schematic; 3/4” (6”) M-CAST TNMC Set Or Electronic Caption ................. DWG-1133307
Assembly and Pwr/Sig Routing; 3/4” TNMC, MCAST .................................... DWG-1133639
Refer to DWG-1133307 and DWG-1133639 in Appendix C for detailed assembly and
schematic diagrams about display power and signal routing of displays with 3/4" pixel
spacing.
Display signal routing can be summarized as follows:
1� Data from the All Sport console travels via signal cable (or radio) into the scoreboard.
2� The signal then travels through the driver and out to the rst LED module of the Home
display via ribbon cable harness.
3� The signal relays from module to module via ribbon cable in daisy-chain style until it
reaches the last module in the Guest display. In electronic captions, the Home and
Guest displays receive signal from separate drivers.

TNMC and Electronic Caption Troubleshooting
14
Display power routing can be summarized as follows:
1� Incoming power from the power cord terminates at the main scoreboard LED driver
tray.
2� Using interconnect harnesses, the power for TNMCs is passed from the driver tray
to the Home display power supply, and then to the Guest display power supply.
In statistic display electronic captions, each power supply receives power from a
separate driver.
3� Power from the power supplies is relayed to all display modules.
4� The modules draw their power directly from the power supply assemblies.
The S2 DIP switch package on the main scoreboard driver sets the display driver address.
Refer to DWG-284773 in Appendix C for the location and functions of the S2 DIP switch.
• For TNMCs, switches 1-4 of S2 are set to OFF, which equals address 221. With Switch 5
off, Home information is displayed. With Switch 5 on, Guest information is displayed.
• For electronic captions, a typical Player-Foul-Points display uses address 223, with
Switch 2 and Switch 5 both on.
Component Locations and Access
To access the internal components of the display, simply remove the screws on either
side of the face panel that secure it to the scoreboard. Carefully remove the face panel
from the scoreboard, as there will be several cables connected to it.
Replacing a Component
Display modules consist of LEDs embedded in a circuit board. One or more circuit boards
are mounted to the back of a display face panel. Do not attempt to remove individual
LEDs. In the case of malfunctioning LEDs, replace the entire module circuit board.
1� Access the internal components as described in Component Locations and Access
(p�14).
2� Disconnect all power/signal cables from the component 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 cable goes to which connector when reattaching.
3� Remove the hardware securing the component to the display face panel.
Note: In order to replace the right-most module circuit board (when viewing the
display from the front), the power supply bracket must be removed rst.
4� Position a new component on the display face panel and tighten the hardware.
5� Reconnect all power/signal connectors.
6� Power up and test the scoreboard/display to verify the issue has been resolved.
Refer to Figure 13 for display assembly, showing the power supply, driver, and modules.
Note: When replacing power supplies built after April 2016, the replacement power
supply will come attached to a mounting plate that mounts to the existing power
supply bracket.

TNMC and Electronic Caption Troubleshooting
15
Module Circuit Board
Display Face Panel
Power Supply
w/ Mounting Plate
Power Supply
Bracket
Power IN
Ribbon Cable
(Signal)
Figure 13: Display Assembly, Top View
Display Maintenance
Complete a yearly inspection to maintain safe and dependable display operation. This
inspection should address the following issues:
• Loose Hardware: Verify that fasteners, such as bolts and rivets, have not come loose.
Check and tighten or replace fasteners as required.
• Excessive Dust Buildup: It may be necessary to occasionally vacuum the inside of the
display cabinet to remove dust/dirt buildup that may interfere with airow.
• Corrosion: Check the paint, and look for possible corrosion.
Make repairs or take corrective action immediately if any of the preceding conditions
are present.
Replacement Parts
The following table contains display components that may require replacement. Many of
the components within the display also have attached part number labels.
Description Part Number
Module; 8x16, Amber (0.75") 0P-1186-0112
Power Supply with Plate (replacement for 3/4" mods after April 2016) 0A-1192-5515
Cable; 18 pos, Ribbon, 6" W-1320
Refer to Section 4: Daktronics Exchange and Repair & Return Programs (p�16) for
information on exchanging or returning parts.

Daktronics Exchange and Repair & Return Programs
16
4 Daktronics Exchange and Repair & Return
Programs
Exchange Program
The Daktronics Exchange Program is a service for quickly replacing key components
in need of repair. If a component fails, Daktronics sends a replacement part to the
customer who, in turn, returns the failed component to Daktronics. This decreases
equipment downtime. Customers who follow the program guidelines explained below
will receive this service.
Before contacting Daktronics, identify these important numbers:
Display Serial Number: ________________________________________________________________
Display Model Number: _______________________________________________________________
Job/Contract Number: _______________________________________________________________
Date Manufactured/Installed: _________________________________________________________
Daktronics Customer ID Number: ______________________________________________________
To participate in the Exchange Program, follow these steps:
1� Call Daktronics Customer Service�
United States & Canada: 1-800-DAK-TRON (325-8766)
Outside the U.S. & Canada: [phone]
2� When the new exchange part is received, mail the old part to Daktronics�
If the replacement part xes the problem, send in the problem part being replaced.
a� Package the old part in the same shipping materials in which the replacement
part arrived.
b� Fill out and attach the enclosed UPS shipping document.
c� Ship the part to Daktronics.
3� The defective or unused parts must be returned to Daktronics within 5 weeks of initial
order shipment�
If any part is not returned within ve (5) weeks, a non-refundable invoice will be
presented to the customer for the costs of replenishing the exchange parts inventory
with a new part. Daktronics reserves the right to refuse parts that have been
damaged due to acts of nature or causes other than normal wear and tear.