Daktronics AF-3300-12-RGB-20-R User Manual

Galaxy AF-3300 Series

Outdoor LED Display

Display Manual

ED-15507 Rev 0 20 June 2005

331 32nd Ave PO Box 5128 Brookings SD 57006
Tel [phone] or 877-605-1113 Fax [phone]
www.daktronics.com e-mail: [e-mail]

ED-15507
Product 1350
Rev 0 – 20 June 2005

DAKTRONICS, INC.

Copyright © 2005

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.

®

is a registered trademark of Daktronics, Inc.

Galaxy

All others are trademarks of their respective companies.

Table of Contents

Section 1: Introduction .................................................................................... 1-1

1.1 Safety Precautions ..................................................................................... 1-2

1.2 Network Concepts ..................................................................................... 1-3

1.3 Display Overview ...................................................................................... 1-3

1.4 Component Identification .......................................................................... 1-4

1.5 Daktronics Nomenclature .......................................................................... 1-6

Section 2: Mechanical Installation ................................................................. 2-1

2.1 Mechanical Installation Overview ............................................................. 2-1

2.2 Support Structure Design ........................................................................... 2-1

2.3 Ventilation Requirements .......................................................................... 2-2

2.4 Lifting the Display ..................................................................................... 2-2

2.5 Display Mounting ...................................................................................... 2-3

2.6 Optional Temperature Sensor Mounting ................................................... 2-3

Section 3: Electrical Installation..................................................................... 3-1

3.1 Common Connectors in the Display .......................................................... 3-1

3.2 Conduit ...................................................................................................... 3-3

3.3 Preparing for Power/Signal Connection .................................................... 3-3

3.4 Power ......................................................................................................... 3-4

Power Requirements ........................................................................... 3-4

Grounding ........................................................................................... 3-4

Power Installation ............................................................................... 3-5

Power Connection .............................................................................. 3- 5

Main Disconnect ................................................................................. 3-6

3.7 Signal Termination from Computer to Disp l a y ......................................... 3-7

3.8 Signal Termination Between Displays (Primary – Mirror) ....................... 3-8

3.9 Optional Temperature Sensor Installation ................................................. 3-8

Section 4: Maintenance and Troubleshooting .............................................. 4-1

4.1 Maintenance and Troubleshooting Overview ............................................ 4-1

4.2 Signal Summary ........................................................................................ 4-2

4.3 Power Summary ........................................................................................ 4-2

4.4 Display Access .......................................................................................... 4-3

4.5 Service and Diagnostics ............................................................................. 4-4

Transformer and RFI Filter ................................................................ 4- 5

Controller ........................................................................................... 4-6

4.6 Ventilation Systems ................................................................................... 4-8

4.7 Thermostats ............................................................................................... 4-9

4.8 Weather Stripping ...................................................................................... 4-9

4.9 Display Maintenance ................................................................................. 4-9

4.10 Troubleshooting ....................................................................................... 4-10

4.11 Initial Operation Information ................................................................... 4-11

Table of Contents i

i

4.12 Replacement Parts List ............................................................................ 4-11

4.13 Daktronics Exchange and Repair and Return Programs .......................... 4-12

Appendix A: Reference Drawings ..................................................................... A-1

Appendix B: Optional Temperature Sensor ..................................................... B-1

i

Table of Contents

List of Figures

Figure 1: Drawing Label ........................................................................................................... 1-1

Figure 2: Version 3 Controller ................................................................................................... 1-4

Figure 3: 12 mm 2-point latches ................................................................................................. 1-5

Figure 4: 20 mm 4-point latches ................................................................................................. 1-5

Figure 5: Module Numbering for Reference ................................................................................. 1-6

Figure 6: Module Numbering Technique ..................................................................................... 1- 6

Figure 7: Typical Label ............................................................................................................. 1-6

Figure 8: Lifting the Display (Correct, Left; Incorrect, Right) ........................................................ 2-2

Figure 9: Ribbon Cable Connector ............................................................................................. 3-1

Figure 10: One Breaker Termination Block ................................................................................. 3- 1

Figure 11: Phoenix Connector .................................................................................................... 3-2

Figure 12: Mate-n-Loc Connector .............................................................................................. 3-2

Figure 13: RJ11 Connector ........................................................................................................ 3-2

Figure 14: RS232/6-pin Quick Connect Jack ................................................................................ 3-2

Figure 15: Primary Display with Enclosures ................................................................................ 3-4

Figure 16: Connections in Power Termination J-box .................................................................... 3- 5

Figure 17: Power Installation to Power Termination Box) ............................................................ 3-6

Figure 18: Display Interconnect ................................................................................................. 3-8

Figure 19: Quick Connect Cable ................................................................................................ 3- 8

Figure 20: Control Component Locations .................................................................................... 4-3

Figure 21: Removing a Module .................................................................................................. 4- 3

Figure 22: Primary Display Power Termination Box .................................................................... 4-5

Figure 23: Controller Component Layout .................................................................................... 4-6

List of Figures iii

Section 1: Introduction

This manual explains the installation, maintenance, and troubleshooting of Daktronics

®

Galaxy
operation, or service of this system, please refer to the telephone numbers listed on the cover
page of this manual.

The manual is divided into six sections: Introduction, Mechanical Installation, Electrical
Installation, Maintenance and Troubleshooting, Appendix A and Appendix B.

Daktronics identifies manuals by an ED number located on the cover page of each manual.
For example, this manual would be referred to as ED-15507.

Listed below are a number of drawing types commonly used by Daktronics, along with the
information that each is likely to provide. This manual might not contain all of these
drawings:

Figure 1 illustrates the Daktronics drawing label. The drawing number is located in the
lower-right corner of the drawing. Listing the last set of digits and the letter preceding them
identifies drawings in the manual. In the example below, the drawing would be referred to as
Drawing B-222544. Reference drawings are inserted in Appendix A.

AF-3300 series LED displays. For questions regarding the safety, installation,

• Introduction covers the basic information needed to make the most of the rest of

this manual – take time to read the entire introduction as it defines terms and
explains concepts used throughout the manual

• Mechanical Installation provides general gu i dance o n display mounting

• Electrical Installation gives general guidance on terminating power and signal

cables at the display

• Maintenance and Troubleshooting addresses such things as removing basic display

components, troubleshooting the display, performing general maintenance, and
exchanging display components

• Appendix A lists the drawings referenced within this manual

• Appendix B includes information on the Optional Temperature Sensor

• Shop Drawings: Fan locations, mounting information, power and signal entrance

points, and access method (front and rear)

• Schematics: Power and signal wiring for various components

• Component Placement Diagrams: Locations of critical internal display

components, such as power supply assemblies, controller boards, thermostats, and
light detectors

Introduction

Figure 1: Drawing Label

1-1

All references to drawing numbers, appendices, figures, or other manuals are presented in
bold typeface, as shown below.

“Refer to Drawing B-222544 in Appendix A for the display power requirements.”

Additionally, drawings referenced in a particular section are listed at the beginning of that
section as seen in the following example:

Reference Drawing:

Shop Dwg, AF-3300-48x34-12-RGB, 32x80-20-R ......... Drawing B-222544

Daktronics displays are built for long life and require little maintenance. However, from time
to time, certain display components will need replacing. The Replacement Parts List in
Section 4.12 provides the names and numbers of components that may need to be ordered
during the life of the display. Most display components have a white label that lists the part
number. The component part number is in the following format: 0P-_ _ _ _-_ _ _ _
(component) or 0A-_ _ _ _-_ _ _ _ (multi-component assem bly).

Following the Replacement Parts List is the Daktronics Exchange and Repair and
Return Programs in Section 4.13. Refer to these instructions if any display component needs
replacement or repair.

1.1 Safety Precautions

Important Safeguards:

1. Read and understand these instructions before installing

2. Be sure the display and external signal enclosures are properly grounded

with an earth ground electrode at the display

3. Disconnect power when servicing the display

4. Do not modify the display structure or attach any panels or coverings to the

display without the written consent of Daktronics, Inc

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 such cases, the user will be required to correct the
interference at their own expense.

Modifications not expressly approved by the manufacturer could void the user's
authority to operate the equipment under FCC rules.

1-2

Introduction

1.2 Network Concepts

The concept of using LED displays as a cost effective, high impact method of
communication is rapidly growing throughout many industries and businesses. The
reasons for this growth are many, but the need for additional features and the
complexity of multiple display installations has emerged. Daktronics display systems
have been designed to meet those needs.

The common thread to most client requests is a means of programming and
controlling a group of displays from a central control point. Daktronics responded by
developing a powerful system of interconnecting and controlling displays. Great care
has been taken to design products that will satisfy a wide variety of installations.
Some of the design goals of these systems include the following:

• Easy transfer of messages

• The ability to tell a display or group of displays in the network which

message should run

• The ability to determine the status of any display on the network

• The ability to control multiple display technologies on the same network

1.3 Display Overview

Reference Drawing:

Daktronics, AF-3300 Galaxy
performance, reliability, easy maintenance, and long life. A light sensor on the front
of the primary display is used for automatic dimming of the LEDs based on the
ambient light levels.

The Daktronics AF-3300 display contains two separate LED matrices. The pixels
have either a 12 mm or a 20 mm center-to-center spacing, and are lit using LEDs
(light emitting diodes). Although the matrices are different sizes and have different
color capacities, a single controller provides signal to the display.

The Galaxy

AF-3300-RR x CC-12-RGB/RR x CC-20-R

Refer to appropriate shop drawing for your display for the approximate size, weight,
and power requirements for your display.

Introduction

Shop Dwg, AF-3300-48x48-12-RGB, 32x48-20-R ...... Drawing B-241264

Shop Dwg, AF-3300-48x64-12-RGB, 32x80-20-R ...... Drawing B-240560

®

displays are designed and manufactured for

®

model numbers are described as follows:

AF-3300 =

RR =
CC =

12/20 =

RGB/R =

Outdoor Louvered Galaxy Display
Number of Rows High
Number of Columns Long
12 mm/20 mm pixel to pixel spacing
Color Capability-RGB (32,000 colors),

R-Monochrome Red

1-3

Refer to Sections 4.2 and 4.3 for the summaries of how signal and power are routed
through the displays.

1.4 Component Identification

The following illustrations depict some of the more commonly accessed Galaxy®
display components.

This is only a brief overview. Refer to Section 4 for additional information on
maintaining the various display components.

Controller: The display’s controller is the “brains” of the display (refer to
The controller receives, translates, and activates the signal information from the
computer to the appropriate pixels on the display.

Figure 2).

1-4

Figure 2: Version 3 Controller

Display Address: The display address is an identification number assigned to each
display of a network. Rotating the address switches on the controller sets the display
address. The control software uses the address to locate and communicate with each
display. Displays that are on the same network cannot have the same address.

Driver/Pixel Board: For the 20 mm pixel boards, the LEDs are mounted directly
onto the driver/pixel board. In the case of the 12 mm boards, there is a separate LED
board and a separate driver that attaches to it. The driver board, whet her separate or
built-in, is responsible for the switching and intensity levels of the LEDs.

Galaxy

®

: Daktronics trademarked name for LED monochrome, tri-colored, or RGB

matrix displays.

LED (light emitting diode): This is a low energy, high intensity lighting unit.

Introduction

Louver: Black plastic shade positioned horizontally above each pixel row. The
louvers increase the level of contrast on the display face and direct LED light.

Mirror: A mirror display is the second display in a Primary-Mirror or Double-Face
configuration. The mirror display does not have a controller. All signal information
to the mirror is received though a signal interconnect cable from the primary.

Module: There are two types of modules in the AF-3300, 12 mm RGB and 20 mm
monochrome red. Each is individually removable from the front of the display.

Module Latch Assembly: This is a device utilizing a sliding retainer bar to hold the
module firmly to the display frame. There are two latches on the 12 mm modules
(refer to

Figure 3) and four latches on the 20 mm modules (refer to Figure 4). A

Hex wrench is used to turn the different latches.

1

/8"

Figure 3: 12 mm 2-point latches

Network: A network consists of multiple displays connected to each other. Up to
240 primary displays can exist on one network.

Pixel: A pixel is a single LED or cluster of LEDs. The number and color of the
LEDs depends on display application.

Power Supply: Converts AC line voltage from the load center to low DC voltage for
one or more module driver boards.

Primary: A primary display is a signal-faced unit or the first display in a Primary­Mirror or Double-Face configuration. The communication and temperature sensor
input will be connected to this display. The light sensor is also internally mounted in
this display. An interconnect cable will transfer information from the primary to the
mirror display in the Double-Face configuration.

Figure 4: 20 mm 4-point latches

Introduction

1-5

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. This information is
also useful when trying to communicate maintenance or troubleshooting efforts.

Figure 5: Module Numbering for Reference

A module is the building block of the Galaxy
24 pixels high by 16 pixels wide and the 20 mm modul es m easure 16 pixels high by
16 pixels wide. By placing modules side-by-side and on top of one another, a display
of any size can be designed and built. Individual modules can be easily removed

1-6

from the display if required.

®

Galaxy

display. Figure 6 illustrates the module numbering method.

In addition, the following labeling formats might be
found on various Daktronics drawings:

• “TB_ _” signifies a termination block for

power or signal cable

• “F_ _” represents a fuse

• “E_ _” shows a grounding point

• “J_ _” denotes a power or signal jack

• “P_ _” stands for 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:

• “0P-_ _ _ _-_ _ _ _” indicates an individual

circuit board, such as the internal fiberboard

• “0A-_ _ _ _-_ _ _ _” stands for an assembly,

such as a circuit board and the plate or bracket
to which it is mounted

• “W-_ _ _ _” represents a wire or cable

Note: A collection of circuit boards working as a single unit may carry an assembly
label. Cables may also carry the assembly numbering format in certain
circumstances. This is especially true of ribbon cables.

Figure 5 shows how Daktronics numbers modules on a

®

display. The 12 mm modules measure

Figure 6: Module Numbering
Technique

Figure 7: Typical Label

Introduction

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, use the label to order a replacement. A typical
label is shown in

Figure 7. The part number is in bold.

Introduction

1-7

Section 2: Mechanical Installation

Note: Daktronics does not guarantee the warranty in situations where the display is not
constantly in a stable environment.

Daktronics engineering staff must approve any changes that may affect the weather-tightness
of the display. If any modifications are made, detailed drawings of the changes must be
submitted to Daktronics for evaluation and approval, or the warranty may be void.

Daktronics is not responsible for installations or the structural integrity of support
structures done by others. It is the customer’s responsibility to ensure that a qualified

structural engineer approves the structure and any additional hardware.

2.1 Mechanical Installation Overview

Because every installation site is unique, there is no single Daktronics-approved
procedure for mounting the Galaxy
section is general information only and may or may not be appropriate for your
particular installation.

A qualified individual must make all decisions regarding the mounting of this
display.

Read both the mechanical and electrical installation sections of this manual
before beginning any installation procedures.

®

displays. The information contained in this

2.2 Support Structure Design

Support structure design depends on the mounting methods, display size, and weight.
The structure design is critical and should be done only by a qualified individual.
Display height and wind loading are also critical factors. It is the customer’s
responsibility to ensure that the structure and mounting hardware are adequate.

Daktronics is not responsible for the installations or the structural inte gri t y of
support structures done by others.

It is the installer’s responsibility to ensure the mounting structure and
hardware is capable of supporting the display, and will agree with local codes.

Before beginning the installation proces s, verify the following:

• All clip angles or mounting holes must be attached to the support structure

• The mounting structure will provide a straight and square-mounting frame

for the display

• The mounting structure is capable of supporting the display and will not

yield at any unsupported points after mounting

• Clearance: 4" of unobstructed space is available above the top of the display

to remove the eyebolt

Mechanical Installation

2-1

Note: No clearance is required once the eyebolt is removed.

Correct any deficiencies before installation.

2.3 Ventilation Re quirements

Reference Drawing:

Shop Dwg, AF-3300-48x48-12-RGB, 32x48-20-R ...... Drawing B-241264

Shop Dwg, AF-3300-48x64-12-RGB, 32x80-20-R ...... Drawing B-240560

Vents are provided in the face of the display for ventilation. Vents and fans draw air
into the display at the bottom, and the warm air is expelled out at the top through
vents in the front. Both of the intake and exhaust vents run the length of the display
and should not be obstructed. Refer to the appropriate Shop Drawing for additional
information.

The display cabinet may be completely enclosed on the sides and in the back, so long
as the vents in the face are not obstructed.

If these requirements are not met, the Galaxy

®

display warranty may be void.

2.4 Lifting the Display

The top of the display is equipped with eyebolts that are used to lift the unit. Take
special care to ensure that the rated load of the eyebolts is not exceeded. Refer to the
information at the end of this section labeled Eyebolts to determine the allowable
load of the eyebolts shipped with the display.

Figure 8 illustrates both the correct (left example) and the incorrect (right example)

method of lifting a display. Lift the display as shown on the left, with the lifting bar.
Use every lifting point provided.

Figure 8: Lifting the Display (Correct, Left; Incorrect, Right)

Do not attempt to permanently support the display by the eyebolts.

Eyebolts can be removed for the display to eliminate the need for overheard
clearance.

2-2

Mechanical Installation

2.5 Display Mounting

Reference Drawing:

Shop Dwg, AF-3300-48x48-12-RGB, 32x48-20-R ...... Drawing B-241264

Shop Dwg, AF-3300-48x64-12-RGB, 32x80-20-R ...... Drawing B-240560

The method used to mount displays can vary greatly from location to location. For
this reason, only general mounting topics can be addressed in this manual.

It is the responsibility of the installer to ensure the installation will adequately
meet local codes and standards, as well as the mounting hardware and method.

Before beginning the installation proces s, verify the following items:

• The mounting structure will provide a straight and square-mounting frame

for the display – height variation in any four-foot horizontal section may
not exceed ¼-inch

• The mounting structure will not give way at any unsupported points after

the display is mounted

The back of the display is equipped with 2x2x¼” thick angles on the top and bottom
of the display (Refer to the Shop Drawings). All mounted displays and wind loading
must meet local codes and be inspected by a qualified structural engineer.

1. Carefully uncrate the display and inspect each side of the display for

possible damage that may have occurred during shipping

2. Following the guidelines described in Section 2.4, lift the display into

position on the support structure

3. Weld or use ½" Grade-5 bolts and hardware to secure the clip angles to the

support structure as shown in the Shop Drawings.

4. Refer to Section 3 for information on routing power to the display

5. After installation is complete, carefully inspect the display for any holes

that may allow water to seep into the display and seal any openings with
silicone – if the eyebolts on the top of the display have been removed,

plug the holes with bolts and the rubber-sealing washer that was
removed with the eyebolt or fill the nut insert with silicone (unless there
is an overhead structure)

2.6 Optional Temperature Sensor Mounting

If an optional temperature sensor will be used with this display, see Appendix B for
mounting and signal connections.

Mechanical Installation

2-3

Section 3: Electrical Installation

Only a qualified individual should terminate power and signal cable at this Daktronics
display.

The Daktronics engineering staff must approve any changes made to the display. Before
altering the display, submit detailed drawings for the proposed modifications to the
Daktronics engineering staff for evaluation and approval or the warranty will be rendered null
and void.

3.1 Common Connectors in the Display

The power and signal connections in the displays use many different types of
connectors. Take special care when disengaging any connector so as not to damage
the connector, the cable, or the circuit board.

When pulling a connector plug from a jack, do not pull on the wire or cable; pull on
the jack itself. Pulling on the wires may damage the connector.

The following information presents some common connectors
encountered during display installation and maintenance:

1. Ribbon Cable Connectors:

Figure 9 illustrates a typical ribbon connector. To

disconnect the ribbon cable, push the plastic clips on the
sides out to unlock and remove the jack.

Before replacing a ribbon cable connector, spray it with
DeoxIT
may cause signal problems. In addition, apply a generous
amount of CaiLube
inserting it into the jack. This paste will protect both the
plug and the jack from corrosion.

2. Termination Blocks:

Termination blocks are commonly used to connect internal
power and signal wires to wires of the same type coming
into the display from an external source. Power wires need
to have one-half inch of insulation stripped from the end of
the wire prior to termination. Insert wires in terminations
and make sure the clamp holds the wire firmly. Refer to

Figure 10 for more information.

™

contact cleaner to remove any foreign matter that

™

protector paste to the plug before

Figure 9: Ribbon
Cable Connector

Figure 10: One Breaker
Termination Block

Electrical Installation

3-1

3. Phoenix

™

-Style Connectors:

Phoenix-style connectors, which are usually green, are often
used for signal termination on circuit boards . R e fer to

. Strip one-quarter inch of insulation from the wire prior to

11

Figure

termination. To remove a wire, turn the above screw counter­clockwise to loosen the connector's grip on the wire. To insert a
wire, push the bare wire into the connector an d turn the above
screw clockwise to lock the wire into place.

4. Mate-n-Lok™ Connectors:

The Mate-n-Lok connectors found in the displays are white and

come in a variety of sizes.

Figure 12 illustrates a four-pin Mate-

n-Lok connector. To remove the plug from the jack, squeeze

Figure 11: Phoenix
Connector

the plastic locking clasps on the side of the plug and pull it
from the jack.

5. Phone/Network Jacks (RJ11/RJ45 Connectors):

RJ connectors, as seen in

Figure 13, are similar to the telephone

connectors or network jacks found in homes and businesses
and are used on the ends of RJ11 or RJ45 cable. In order to
remove this plug from the jack, depress the small clip on the
underside of the plug.

Before replacing an RJ connector, spray it with DeoxIT

contact cleaner to remove any foreign matter that may cause

™

Figure 12: Mate-n­Loc Connector

signal problems. In addition, apply a generous amount of
CaiLube

™

protector paste to the plug before inserting it into the
jack. This paste will protect both the plug and the jack from
corrosion.

6. Quick Connect Jack:

The display uses quick connect jacks for the connection of the
signal termination enclosure, the temperature sensor and
possible connection to a mirror display. There are three input
and one output quick connect jacks located on the back of the
primary display, and when not used the attached dust cover

Figure 13: RJ11
Connector

should be kept closed.

To attach the cable to a jack, make sure to line up the plug to
match the jack, push the plug in then turn the outer collar to
lock in place. Figure 14 illustrates the 6-pin quick connect
jack.

3-2

Figure 14: RS232/6-pin
Quick Connect Jack

Electrical Installation

3.2 Conduit

Daktronics does not include the conduit. Separate conduit must be used to route:

• Power

• Signal IN wires to the signal termination enclosure, when applicable

• Signal OUT wires (if not using the provided i nte rco n nect ca ble)

The power J-box is provided with ¾” threaded holes for use with ¾” conduit.
Unthreaded knockout holes are provid ed in the signal enclosures used with the
display. If necessary, there are knockout/drill holes in the display itself when not
using the provided enclosures.

For displays with more than one face, signal wiring between displays is normally
done using a quick connect interconnect cable (length 6 feet).

3.3 Preparing for Power/Signal Connection

1. Enclosures are provided with the display for termination of power. Signal

termination is dependent upon communication type.

2. Route power to the display through a fused disconnect switch capab le of

opening all ungrounded power conductors – install this disconnect within
the line-of-sight of any personnel performing maintenance on the display (if
the disconnect is located out of sight of the display, it must be capable of
being locked in the open position)

Note: Displays are equipped with supplemental protection devices that carry a
UL1077 (IEC 60947, VDE 660) rating. These devices are only intended to protect

the components within the display. Suitable devices must be used for the equipment
and feeders supplying power to the display.

3. Power conductors from the disconnect to the display should be routed

through conduit in agreement with local code

4. Display power will terminate to the display at the external power

termination J-box mounted to the back of the display

5. Connect the grounding electrode conductor, at the grounding lug, to the

display at this time

6. Both signal communication interfaces will complete connection with a

quick connect cable. Refer to Section 3.7 for more detailed connection
information

Note: Daktronics strongly recommends that the quick connect cable be secured to
protect it from weather or vandalism.

Electrical Installation

3-3

3.4 Power

Reference Drawings:

Shop Dwg, AF-3300-48x48-12-RGB, 32x48-20-R ...... Drawing B-241264

Shop Dwg, AF-3300-48x64-12-RGB, 32x80-20-R ...... Drawing B-240560

Power Requirements

Refer to the appropriate Shop Drawing for voltage and current requirements for
your display size. Each uses a 120VAC single-phase power source.

Do not connect the displays to any voltage other than that listed on the
Daktronics product label.

Proper power installation is imperative for proper display operation. The following
sub-sections give details of display power installation.

Grounding

This sign is intended to be installed in accordance with the requirements of
Article 600 of the National Electrical Code and/or other applicable local codes.
This includes proper grounding and bonding of the sign.

Displays must be grounded according to the provisions outl i ned in Article 250 of the
National Electrical Code
less.

The display system must be connected to earth-ground. Proper grounding is
necessary for reliable equipment operation. It also protects the equipment from
damaging electrical disturbances and lightning. The display must be properly
grounded or the warranty will be void.

®

. Daktronics requires a resistance to ground of 10 ohms or

3-4

Figure 15: Primary Display with Enclosures

Electrical Installation

The material of an earth-ground electrode differs from region to region and from
conditions present at the site. Consult the National Electrical Code and any local
electrical codes that may apply. The support structure of the display cannot be used
as an earth-ground electrode. The support is generally embedded in concrete, and if
in earth, the steel is either primed or it corrodes, making it a poor ground.

A minimum of one grounding electrode must be installed for each display face. The
grounding electrode is typically one grounding rod for each display face. Other
grounding electrodes as described in Article 250 of the National Electric Code may
be used. Daktronics requires that the resistance to ground be 10 ohms or less. If the
resistance to ground is higher than 10 ohms, it will be necessary to install additional
grounding electrodes to reduce the resistance. The grounding electrode should be
installed within 25 feet of the base of the display. The grounding electrode must be
connected to the ground terminal lug on the back of the display.

Power Installation

There are two considerations for power installation: installation with ground and
neutral conductors provided, and installation with only a neutral conductor provided.
For these displays, installation with ground and neutral conductors provided is used.

Installation with Ground and Neutral Conductors Provided

For this type of installation, the power cable must contain an isolated earth-ground
conductor. Under this circumstance, do not connect neutral to ground at the
disconnect or at the display. This would violate electrical codes and void the
warranty. Use a disconnect so that all hot lines and neutral can be disconnected. The
National Electrical Code requires the use of a lockable disco nnect wi t hin sight of or
at the display.

Power Connection

Reference Drawings:

Schematic, Power Term Panel, 1 Circuit ..................... Drawing A-211950

Display power is connected to the power termination
enclosure on the back of the display. Complete the
following steps to terminate the hot, neutral, and ground
wires at the termination enclosure.

1. Route the power cable through ½” conduit to the

rear of the display and into the power termination
enclosure.

2. The power termination enclosure will contain two

wires plus a ground coming from the interior of
the display – these wires are pre-terminated to the
power termination panel inside the display

3. Inside the external power termination J-box,

connect the power wires to the wires coming from
the display interior using wire nuts. Refer to

Figure 16 for further information.

Electrical Installation

Figure 16: Connections in Power
Termination J-box

3-5

Note the following colors are used for the pre-terminated wires:

• Line 1 – Black

• Neutral - White

• Grounding Conductor - (Green-Yellow)

If these power terminations cannot be made at the enclosure, they can be made
directly to the power termination panel in the display. The following steps need to be
done to complete internal connections:

1. Open the display as explained in Section 4.4 and locate the power

termination panel for these displays.

2. Route the cable through conduit to the back of the display – use one of the

½” knockouts for access, being careful not to damage any internal
components.

3. Disconnect the wires to the terminal block to the external J-box, and

connect the wires from the direct cable using a small flat screwdriver to
open the cage clamps. Release the jumper wires connected to the external
power termination box.

4. Install the wires from the direct circuit into the breaker and cage clamps

following the directions in

• Hot to circuit breaker 1 (line side)

• Neutral to gray terminal block (line side)

• Ground to green/green yellow terminal block

5. Power will need to be connected to all display faces.

Figure 17.

Main Disconnect

The National Electrical Code requires the use of a lockable power disconnect near
the display. Provide a lockable disconnect switch (knife switch) at the display
location so that all power lines can be completely disconnected. Use a 3-conductor
disconnect so that both hot lines and the neutral can be disconnected. The main
disconnect should be mounted at or near the point of power supply connection to the
display. A main disconnect is to be provided for each supply circuit to the display.

Figure 17: Power Installation to Power Termination Box)

3-6

Electrical Installation

The disconnecting means must be located in a direct line of sight from the display or
outline lighting that it controls. This requirement provides protection by enabling a
worker to keep the disconnecting means within view while working on the display.

Exception: Disconnecting means that are capable of being locked in the open
position may be located elsewhere.

3.7 Signal Termination from Computer to Display

The AF-3300 is designed for quicker signal and power connection to the display and
between displays.

• Signal will terminate to a watertight en closure, which connects to the

primary display using a quick connect cable

• Mounting the temperature sensor to the display structure and at least one

foot away from the display is preferred – terminate it to the primary display
with a quick connect cable (Do Not mount the temperature sensor between
display, or anywhere that the airflow is restricted)

• The primary display will connect to th e mirror display (2V installations)

with a 6-foot, quick connect, inter-con nect cable. In the case of those cables
that have right-angle connector, make sure the cable extends to the side or
down (never up) to preven t stress on the cable

A separate manual is provided for explaining the connection to the signal termination
enclosure. There are seven different methods of communication; your manual will be
one of these types:

Communication Type Communication Manual ED #

RS232 ED-14739
RS422 ED-14742
Fiber ED-14743
Radio ED-13932
Modem ED-14744
Ethernet ED-14745
Fiber Ethernet ED-14746

Electrical Installation

3-7

3.8 Signal Termination Between Displays (Primary – Mirror)

Most displays are shipped as either a single Primary display
or two displays in a 2V, Primary-Mirror configuration.

The Primary - Mirror (2V) quick connect cable is used to
terminate signal between two displays. The six-foot cable
goes from the Signal OUT (J34) on the primary display to
Signal IN (J32) on the mirror display.

Figure 18: Display Interconnect

Figure 19: Quick Connect Cable

3.9 Optional Temperature Sensor Installation

If an optional temperature sensor will be used with this display, see Appendix B for
mounting and signal connections.

3-8

Electrical Installation

Section 4: Maintenance and

Troubleshooting

Important Notes:

1. Power must be turned off before any repair or maintenance

work is done on the display.

2. Qualified service personnel must make any access to internal

display electronics.

3. The Daktronics engineering staff must approve ANY changes
made to the display. Before altering the display, detailed
drawings for the proposed modifications must be submitted
to the Daktronics engineering staff for evaluation and
approval or the warranty will be rendered null and void.

4.1 Maintenance and Troubleshooting Overview

Daktronics Galaxy® AF-3300 series displays are front accessible; meaning access to
the internal components can be gained only from the front of the display.

This section provides the following Galaxy

• Signal Routing Summaries provide a basic explanation of the way signal

travels through the display

• Power Routing Summaries offer a basic explanation of the way power

travels through the display

• Service and Diagnostics give instructions for removing various display

components, and explains the functions of circuit board connectors and the
meanings of any diagnostic LEDs

• Maintenance includes a number of steps to take to keep this Galaxy

display in a safe, working order

• Troubleshooting lists some possible display malfunctions, and provides a

number of possible causes for that malfunction

• Replacement Parts List includes the description and part number of

display components that may need replacing during the life of this display

• Exchange and Repair and Return Programs explain Daktronics

component return policy

Note: A single pixel flashing in the lower right hand corner of the display indicates
that the display has power, but no messages are currently running.

®

display information:

®

Maintenance and Troubleshooting

4-1

4.2 Signal Summary

The signal routing for the display can be summarized as follows:

1. Data from the control computer, which runs Venus® 1500 software, travels

via RS232, RS422, modem, fiber optic cable, radio signal, or Ethernet to the
signal termination enclosure at the primary display.

2. From the signal enclosure, signal is sent to the primary display via a quick

connect cable, which connects to the quick connect input board.

3. From the quick connect input board, the signal is transferred to the display’s

controller via a 20-conductor ribbon cable.

4. From the controller, the signal then travels over one or more 20-conductor

ribbon cables (J11 through J18 provide signal out) to J1 input on the driver
of the first row of modules in the display.

5. Data exits at J2 output and is relayed to J1 of the next driver board and so

on, traveling down the entire row of modules – the drivers use this display
data to control the LEDs.

6. On the primary display, in a primary-mirror (2V) configuration, the output

leaves the J2output on the last column of modules via a 20-conductor
ribbon cable and connects to one or more 31-pin quick connect output
boards.

7. A quick connect interconnect cable transfers data from the primary to the

mirror display.

8. The 31-pin quick connect input board on the mirror display receives the

signal and transmits it to J1 on each row of the first column of modules, via
a 20-conductor ribbon cable

9. Data exits at J2 and is relayed to J1 of the next driver board and so on,

traveling down the entire row on modules in the mirror face- this display
data is used to control the LEDs on this face.

10. The data displayed on the mirror face will be the same as that displayed on

the primary face.

4.3 Power Summary

Reference Drawing:

Schem, AF-3300-48x64-12-RGB/32x80-20-R,P/M....... Drawing B-242469

Shcem, AF-3300-48x48-12-RGB/32x48-20-R, P/M ..... Drawing B-242471

The power routing for the display can be summarized as follows:

1. Power terminates at the power J-box on the back of the display

2. Wires are pre-terminated from there to the power termination box in the

display

3. Before leaving the enclosure, power is sent through a circuit breaker and an

RFI electrical filter or filters

4. Power for the controller board passes through a transformer located in the

power termination box

4-2

Maintenance and Troubleshooting

Note: Power supplies are preset. Contact Daktronics Customer Service for the proper
settings.

5. Fans are located along the bottom of the display to draw in cool air, which

exits out through vents located in the face at the top of the display

Figure 20: Control Component Locations

4.4 Display Access

Daktronics Galaxy AF-3300 series displays are
front accessible; meaning access to the internal
components can be gained only from the front of the
display.

1. Locate the latch access fasteners on the

module (one is centered below the second
row of pixels and one is centered above the
bottom two rows)

2. With a

3. Gently pull the module far enough forward to reach behind the back and

When installing a module, reverse the previous steps and take note of the following
points.

• The weather-stripping on the back edge of the module must be intact and in

1

/8" Allen wrench, turn the latch

access fasteners a quarter turn as shown in

Figure 21 – on the 12 mm modules, one

latch turns clockwise and the other
counter-clockwise to open, and the reverse to close. On the 20 mm modules
turn both latches counter-clockwise to open and the reverse to close.

disconnect the power and ribbon cables

good condition if it is to prevent water from seeping into the display

Figure 21: Removing a Module

Maintenance and Troubleshooting

4-3

• The module latches must be fully engaged to create a watertight seal around

the edge of the module. The module should be firmly seated against the
display when the latches are fully engaged

The module and driver board are a single functional unit. Each module assembly is
made up of a module housing (containing LEDs and the driver) and a louver
assembly.

Figure 20 shows the location of several basic components inside the display. The

placement may vary slightly depending on the height of the display. Refer to this
figure for additional troubleshooting component locations .

4.5 Service and Diagnostics

Reference Drawings:

Layout, AF-3300-48x64-12-RGB/32x80-20-R ............. Drawing A-241869

Layout, AF-3300-48x48-12-RGB/32x48-20-R ............. Drawing A-241870

Schem, AF-3300-48x64-12-RGB/32x80-20-R,P/M ..... Drawing B-242469

Schem, AF-3300-48x48-12-RGB/32x48-20-R,P/M ..... Drawing B-242471

The following sub-sections address servicing of the following display components:

• transformer, RFI filter

• controller

• power supplies

The sub-sections also address any diagnostic LEDs, fuses, and signal/power
connectors found on the unit. On Component Layout Drawings the components are
denoted as follows.

Component… Denoted As… Location…

Power Term
Panel

Controller 0A-1229-0013 Behind modules B103 and B104
Modules 0A-1266-4100 (20 mm Red)

Power Supply 0A-1327-0011 Behind module A105
Light Detector 0A-1327-3000 Above module A105

0A-1327-0100 Behind modules A101 and A102

Over entire face of the display A101

0A-1337 4551(12 mm RGB)

through B109 (includes driver)

4-4

Maintenance and Troubleshooting

Transformer and RFI Filter

Reference Drawings:

Schematic. Power Termination Panel, 1 Circuit .......... Drawing A-211950

Remember: Disconnect power before servicing any internal components

Transformer

The transformer is located in the upper portion of the primary display’s power
termination box as shown in

Figure 22.

Turn off power to the display before removing the wires.
To replace the transformer

1. Disconnect and label all the wires attached to the transformer

2. Release the hardware securing it to the inside of the enclosure

Position the new transformer in its place, and replace the fastening

3.

hardware
Re-connect all the wires using Drawing A-211950 as a reference

4.

RFI Filter

The RFI electrical filters are mounted to the side of the power termination box (Z1 in

Drawing A-211950).

1 Like the transformer, label all

connecting wires and then
remove them

2 Release the attachment

hardware

3 Install the new filter using

Drawing A-211950 as a wiring
reference

Figure 22: Primary Display Power Termination Box

Maintenance and Troubleshooting

4-5

Controller

Reference Drawings:

CNTRLR II, Galaxy, 8 Conn, J1087 ............................ Drawing B-204771

The controller sends data to the modules. Refer to the signal summary in Section 4.2
for more information and for the possible location of the controller board.

Figure 23

illustrates a typical controller.

Figure 23: Controller Component Layout

Complete the following steps to remove the controller from the display:

Tools required:

1

/8" hex wrench and 3/16" nut driver

1. Turn off power to the display

2. Remove the modules A203 and A204 that are positioned directly in front of

the controller of the primary display

3. Disconnect power plug from J5

4. Remove all power and signal connections from the board (pushing apart the

latches and carefully pulling them from the jack will release the “Locked”
connectors) – when replacing the board, it is helpful to have the cables
labeled as to which was removed from which connector

5. Remove the six screws holding the board in place using a

6. Take note of the address of the controller and ensure the address on the

replacement board is the same

Follow the previous steps in reverse order to install a new controller board.

3

/16" nut driver

4-6

Maintenance and Troubleshooting

The rotary switches set the hardware address, which the software uses to identify that
particular display. When replacing a controller board, be sure to set the rotary
switches in the same address configuration as the defective controller. Each
controller in a network needs a unique address.

Note: Setting both rotary switches to address 0 (set the switches to 0 by rotating
them counter clockwise until the arrow points to 0) can activate a test mode. The
display’s power must be turned off and then turned back on to activate the test mode.

Controller Address Settings

Address Upper Lower Address Upper Lower

Test Mode 0 0 10 0 A

1 0 1 11 0 B
2 0 2 12 0 C
3 0 3 13 0 D
4 0 4 14 0 E
5 0 5 15 0 F
6 0 6 16 1 0
7 0 7 17 1 1
8 0 8 … … …
9 0 9 240 F 0

Diagnostic LEDs are located on the controller; the table below tells what each LED
denotes:

CPU
LED Color Function Operation

DS1 Red CAN TxD Flashes when controller is transmitting CAN information.
DS2 Red CAN RxD Flashes when controller is receiving CAN information.
DS3 Red System Reset Off when controller is functioning properly. Flashes at 1.5-

second rate if controller is not resetting the watchdog timer.

DS4 Red Run A steady flash indicates the controller is running properly.

Normal flash rate is about once per second.

DS5 Red U15

Programmed

DS7 Red Link On when Ethernet interface is in the link-up condition.

DS8 Red Speed On when the Ethernet interface is at 100Mbps. Off when

DS9 Red Duplex On when the Ethernet interface is at full duplex. Off when

DS10 Red Collision Flashes when the Ethernet interface detects a collision in

On when U15 contains a valid logic program.

Flashes when the Ethernet chip detects transmits or
receives activity.

the Ethernet interface is at 10Mbps.

the Ethernet interface is at half-duplex.

half-duplex.

Maintenance and Troubleshooting

4-7

DS12 Red +2.5V On when +2.5V power supply is functioning.
DS13 Red +3.3V On when +3.3V power supply is functioning.

Product Board
LED Color Function Operation

DS1 Green +5V On when +5V power supply is functioning.
DS2 Green +3.3V On when +3.3V power supply is functioning.
DS3 Yellow COM1 TxD Flashes when transmitting serial information.
DS4 Yellow COM1 RxD Flashes when receiving serial information.
DS5 Yellow Light Flashes when receiving signal from light sensor
DS6 Yellow Com 2 RX2 Normal state is ON. When connected to receive RTD input,

the LED will be OFF. The LED flashes when receiving
signal from RTD input device.

Temp Sensor
LED Color Function Operation

DS1 Green +5V On when +5V power supply is functioning.
DS2 Red Run A steady flash indicates the controller is running correctly.

Normal flash rate is about once a second. Flashes faster
when the sensor is transmitting temperature or light
information.

4.6 Ventilation Systems

Ventilation fans should be checked after 1,500 hours of operation and every 1,500
hours after that to ensure the display is being cooled properly. Fans should be
checked more often if the display is located in a dusty or harsh weather environment
(i.e. along a gravel road with dust laden air).

• 1,500 hours is equivalent to 83 days if the display is operated for 18 hours a

day and the power to the display is turned off when not in use

• 1,500 hours is equivalent to 62 days if the di spla y is ru nning non-stop for 24

hours a day

• Each time a module is removed, for whatever reason, take a minute to

inspect the fans

• Check the fan blades for dirt and debris; cleaning them and the inside of the

display if necessary – fan blades must be kept clean to maintain fan
efficiency and ensure proper cooling

• Spin the fan blades with a pen or pencil to ensure that the bearings are free

and the fan is still in balance

To check the operation of the fans, push the bypass button (momentary contact) on
the thermostat enclosure to temporarily turn the fans on: (The bypass button is
located behind A103, top row, and third module on the left.)

• Hold your hand or a piece of light paper in front of the display to detect air

movement

• If the fan does not turn or does not operate smoothly, replace it

4-8

Maintenance and Troubleshooting

Make sure that the intake vents and exhaust vents on the front of the display are not
blocked, and are free of dust or other debris.

4.7 Thermostats

A thermostat controls when the ventilation fans are turned on in the display. Refer to

Figure 20 for the location of the thermostat. The ventilation fans turn on when the

inside of the display reaches 85° F (29° C), and turn off at 65° F (21° C).

4.8 Weather Stripping

To ensure that the display is waterproof, weather stripping has been provided around
the entire display and around each module. It is important that the weather stripping
is installed properly at all times or water may leak into the display and damage the
components.

4.9 Display Maintenance

A yearly inspection should be completed to maintain safe and dependable display
operation. This inspection should address the follo wing issues:

• Loose Hardware

Verify fasteners, such as bolts and rivets, have not come loose. Fasteners

should be checked and tightened or replaced as required.

• Excessive Dust Buildup

Occasionally it may be necessary to vacuum the inside of the display

cabinet to remove dust/dirt buildup that may interfere with airflow.

• Water Intrusion – Water Stain Marks

Water can enter the display where weather stripping has come loose or

deteriorated or where fasteners have come loose allowing gaps in the panels
or where moisture may be entering around hardware. Be sure to check
around the lift eyes and bolts to ensure that water has not entered there. If
so, replace hardware immediately to prevent more water from entering the
display. Also, check electronic components for possible corrosion.

• Corrosion

Check the paint, and look for possible corrosion especially at footings,

structural tie points, and ground rods.

If any of the above conditions are noticed, action must be taken to correct the
situation.

Maintenance and Troubleshooting

4-9

4.10 Troubleshooting

This sub-section contains some symptoms that may be encountered in the displays.
This list does not include every possible symptom, but does represent common
situations that may occur.

Symptom/Condition Possible Cause/Remedy

One or more LEDs on a single
module fail to light.

One or more LEDs on a single
module fail to turn off.

A section of the display is not
working. The section extends all the
way to the right side of the display.

One row of modules does not work
or is distorted.

A group of modules, (a column or
block) fail to work.

Entire display fails to work. • Check for proper line voltage to the power J-

Temperature always reads –196F/­127C degrees F/0 degrees C.

Display is stuck on bright or dim. • Check light detector cable/wiring.

• Replace/check ribbon cables on the module.

• Replace the module.

• Replace/check ribbon cables on module.

• Replace the module.

• Replace/check the ribbon cable.

• Replace/move the first module/driver that is

not working

• Replace/move the first module/driver on the

left side of the module that is not working.

• Replace/check ribbon cable to and from first

non-working module.

• Check for bent pins on module and controller.

• Replace/move module that is distorted

• Replace/move the first module to the left of the

one that is not working

• Replace controller.

• Check the voltage to the module.

• Check the wire connections at the power

supply and at the module.

box.

• Check for correct power at power termination

panel

• Check for correct power to controller (10 VAC)

and modules (3.5 or 5.3 VDC).

• Check the breakers in the power termination

panel.

• Check/replace the ribbon cable from the

controller to the modules.

• Check the voltage settings on the power

supply.

• Check the signal cable to the controller.

• Replace the controller.

• Check temperature sensor cable connections.

• Check for correct power on temperature

sensor.

• Check that the temperature is set to address 1

• Replace the temperature sensor.

• Check light detector for obstructions.

• Replace the light detector.

• Replace the controller.

4-10

Maintenance and Troubleshooting

4.11 Initial Operation Information

Every time the display is operated, the display will run through an initialization in
which it will display the following:

1. Product Name (Galaxy®)

2. Display Size (Row x Column)

3. Shading (32K RGB)

4. Bootloader Version (OS X.XX)

5. Firmware Number (ED-13305)

6. Firmware Revision (Rev X.XX)

7. Hardware Address (HW:XX)

8. Software Address (SW:XX)

9. COM1 Configuration (C1:WGRNS )

10. COM 2 Configuration (C2: RTD)

11. Line Frequency (CLK: AUTO (60))

12. Display Name Description (Galaxy Row x Column)

After this sequence is complete, the display will blank. A single pixel will flash in
the lower right hand corner of the display to show that the display has power, but no
messages are currently running.

4.12 Replacement Parts List

The following table contains some of the items that may need to be replaced in these
displays over a period of time. Many of the parts within the display also list their part
number on labels affixed to them.

To prevent theft, Daktronics recommends purchasing a lockable cabinet to store
manuals and replacement/spare parts.

Part Description Part Number

Controller III, Louvered Galaxy, 8-connector 0A-1229-0013
Module, 1R, 16x16, (20 mm) Red 0A-1266-4100
Module, 1R1G1B 24x16, (12 mm) RGB 0A-1377-4551
Power Supply Assembly 0A-1327-0011
Light Level Detector 0A-1327-3000
Fan; 134 CFM, 120V @60Hz, 22 watt B-1053
Transformer; Pri 115V, Sec 10VCT@3A T-1119
Filter, RFI Line 20 AMP 120 VAC Z-1007

Ribbon Cables; 20 Position

Cable Assy; 20 pos Ribbon, 18”, Dual Row W-1387
Ribbon Assy, 20 Pos 30” 0A-1000-0017
Ribbon Assy; 20 Pos, 42” 0A-1000-0019
Ribbon Assy; 20 Pos, 60” 0A-1000-0021

Interconnect Cable; 31-pin male to 31-pin male, 6’,
QC

Quick Connect Interface, Input, w/Ethernet 0P-1229-2004
Quick Connect Bd, Primary, 31 Pin 0P-1229-2013

Maintenance and Troubleshooting

W-1503

4-11

Quick Connect Bd, Mirror, 31 Pin 0A-1327-1014
Electrical Contact Cleaner Lubricant / Cal-Lube CH-1019
Hex Wrench, T-Handle 1/8” RT TH-1062
Temper Resistant Screwdriver Bit for External

Communication Box
Torx Screws for the Communication Box HC-1550
Torx Screws for the Communication Box Lid HC-1549

TH-1103

4.13 Daktronics Exchange and Repair and Return Programs

To serve customers' repair and maintenance needs, Daktronics offers both an
Exchange Program and a Repair and Return Program.

Daktronics' unique Exchange Program is a quick, economical service for replacing
key components in need of repair. If a component fails, Daktronics sends the
customer a replacement, and the customer, in turn, sends the failed component to
Daktronics. This not only saves money, but also decreases display downtime.
Daktronics provides these plans to ensure users get the most from their Daktronics
products, and it offers the service to qualified customers who follow the program
guidelines explained below. Please call the Help Desk – 877-605-1113 – if you have
questions regarding the Exchange Program or any other Daktronics service.

When you call the Help Desk, a trained service technician will work with you to
solve the equipment problem. You will work together to diagnose the problem and
determine which replacement part to ship. If, after you make the exchange, the
equipment still causes problems, please contact our Help Desk immediately.

If the replacement part fixes the problem, package the defective part in the same box
and wrapping in which the replacement part arrived, fill out and attach the enclosed
UPS shipping document, and return the part to Daktronics. In most circumstances,
you will be invoiced for the replacement part at the time it is shipped. This bill,
which represents the exchange price, is due when you receive it.

Daktronics expects immediate return of an exchange part if it does not solve the
problem. The company also reserves the right to refuse equipment that has been
damaged due to acts of nature or causes other than normal wear and tear.

If you do not ship the defective equipment Daktronics within 30 working days from
the invoice date, Daktronics assumes you are purchasing the replacement part
outright (with no exchange), and you will be invoiced for it. This second invoice
represents the difference between the exchange price and the full purchase price of
the equipment.

The balance is due when you receive the second invoice. If you return the exchange
equipment after 30 working days from the invoice date, you will be credited for the
amount on the second invoice, minus a restocking fee. To avoid a restocking

charge, you must return the defective equipment within 30 days from the
invoice date.

4-12

Maintenance and Troubleshooting

Daktronics also offers a Repair and Return Program for items not subject to
exchange.

Return Materials Authorization: To return parts for service, contact your local
representative prior to shipment to acquire a Return Material Authorization (RMA)
number. If you do not have a local representative, call the Daktronics Help Desk for
the RMA. This expedites repair of your component when it arrives at Daktronics.

Packaging for Return: Package and pad the item well to prevent damage during
shipment. Electronic components, such as printed circuit boards, should be installed
in an enclosure or placed in an antistatic bag before boxing. Please enclose your
name, address, phone number, and a clear descriptio n of symptoms.

This is how to reach us:

Mail: Customer Service, Daktronics Inc.

PO Box 5128

331 32nd Ave
Brookings SD 57006

Phone: Daktronics Help Desk: 877-605-1113 (toll free)

or 605-697-4034

Fax: [phone]

E-mail: [e-mail]

Maintenance and Troubleshooting

4-13

Appendix A: Reference Drawings

Refer to Section 1 for information on reading drawing numbers. The following drawings are
listed in numerical order by size (A, B, etc.). The drawings following this section are split into
sections according to drawing type. Those drawings are listed according to size.

Schematic, Power Termination Panel, 1 Circuit .............................. Drawing A-211950

Layout, AF-3300-48x64-12-RGB/32x80-20-R ................................. Drawing A-241869

Layout, AF-3300-48x48-12-RGB/32x48-20-R ................................. Drawing A-241870

CNTRLR II, Galaxy, 8 Conn, J1087 ................................................ Drawing B-204771

Shop Dwg, AF-3300-48x48-12-RGB,32x48-20-R ........................... Drawing B-241264

Shop Dwg, AF-3300-48x64-12-RGB, 32x80-20-R .......................... Drawing B-240560

Schem, Primary Signal, Internal, W/QC .......................................... Drawing B-206146

Schem, AF-3300-48x64-12-RGB/32x80-20-R,P/M ......................... Drawing B-242469

Schem, AF-3300-48x48-12-RGB/32x48-20-R,P/M ......................... Drawing B-242471

Reference Drawings

A-1