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.
®
and Venus® are registered trademarks of Daktronics, Inc. All others are trademarks of their
This manual explains the installation, maintenance, and troubleshooting of a Daktronics
®
Galaxy
regarding the safety, installation, operation, or service of this system, please refer to the
telephone numbers listed on the cover page of this manual.
How to Use this Manual
34mm monochrome and red-green (tri-color) display, series AF-3160. For questions
This manual is divided into seven sections: Introduction, Mechanical Installation,
Electrical Installation, Maintenance and Tr o ubl eshooting, Appendix A, Appendi x B ,
and Appendix C.
• 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 cable 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 signal converter.
• Appendix C includes information on the optional temperature sensor.
Daktronics identifies manuals by an ED number located on the cover page of each
anual. For example, this manual would be referred to as ED13767.
m
Listed below are a number of drawing types commonly used by Daktronics, along
the information that each is likely to provide. This manual might not contain all
with
these drawings.
• System Riser Diagrams: Overall system layout from control computer to
display, power, and phase requirements .
• Shop Drawings: Fan locations, mounting information, power and signal
entrance points, and access method (front).
• 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.
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 A-69945. Reference drawings are inserted in
Appendix A.
Introduction
1-1
Page 8
Figure 1: Drawing Label
All references to drawing numbers, appendices, figures, or other manuals are
presented in bold typeface, as shown below.
“Refer to Drawing A-69945 in Appendix A for the power supply location.”
Additionally, drawings referenced in a particular section are listed at the beginning
of that section as seen in the following example:
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 4.11 provides the names and part number 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-_ _ _ _-_ _ _ _ (circuit board) or 0A-_ _ _ _-_
_ _ _ multi-component assembly).
Following the Replacement Parts List is the Daktronics Exchange and Repair and Return Programs in Section 4.12. Refer to these instructions if any display
component needs replacement or repair.
1.1 Safety Precautions
Important Safeguards:
1. Read an d understand these instructions before installing.
2. Be sure the display and enclosures are properly grounded with an earth ground electrode at the display.
3. Disconn ect 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.
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 complexity
of multiple display installations has emerged. Daktronics display systems have been
designed to meet those needs.
1-2
Introduction
Page 9
The common thread to most client requests is a means of programming and
ntrolling a group of displays from a central control point. Daktronics responded by
co
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
There are five (5) network systems available: RS232, RS422, modem, fiber, and
adio. Up to 240 displays can exist on one network.
r
RS232 Network
RS232 (EIA/TIA-232-E) is a standard communication interface that employs a
single-ended serial transmission scheme that uses a maximum cable length of 7.6
meters (approximately 25 feet). This interface was designed for computer
communication at short distances. Most computers have an RS232 communications
port. Refer to Section 3 for additional information.
RS422 Network
RS422 (EIA/TIA-422-B) is a standard communication interface that utilizes a
differential balanced transmission scheme that uses a typical maximum cable length
of 1.2 km (approximately 4000 feet). The main advantage to RS422 over RS232 is
the longer cable length that is possible. A signal converter is needed to convert the
computer’s RS232 to RS422. Refer to Section 3 for additional information.
Modem Network
The modem is a standard communication interface that utilizes standard phone
transmission lines. The phone company assigns each phone line a number that the
modem at the computer uses to communicate to the modem in the display. Each
modem network needs to have a dedicated phone line assigned to it. Refer to Section 3 for additional information.
Fiber Optic Network
A fiber optic network is a standard communication method transmitting light (signal)
through a glass fiber. Fiber optic cable has a maximum length of 600 meters
(approximately 2,000 feet). A signal converter is needed to convert the computer’s
RS232 signal to fiber optic signal; a minimum of two fibers are required.
Radio Network
The Radio network is a standard communication method that uses radio waves at
high frequencies to transmit signal. The Venus 1500 Radio network has a maximum
distance of 450 meter (approximately 1500 feet) outdoor and 150 meters
(approximately 500 feet) indoor. A nearly straight line-of-sight path must be
maintained between the server radio connected to the computer and the client radio
connected to the display. Refer to Section 3 and the Venus 1500 Radio M anual ,
ED13932, for additional information.
Daktronics AF-3160 Galaxy displays are designed and manufactured for
erformance, reliability, easy maintenance and long life. The pixels have a 34mm
p
center-to-center spacing, and are lit using LEDs (light emitting diodes). A light
sensor on the front of the first or primary display is used for automatic dimming of
the LEDs based on the ambient light levels. The configuration of pixels depends on
the model of display ordered.
Refer to the drawings referenced above for the approximate size, weight, and power
irements for your model of display.
requ
The Galaxy model numbers are described as follows: A
AF-3160
Outdoor 34 mm Louvered Galaxy Display
............ Drawing B-178625
-34-Mono-Gen2...... Drawing B-178626
F-3160-RRCCC-34-X-X(X)
RR
CCC
34
X
X(X)
Number of Columns Long (Up to 144 Columns, Standard)
PM – Primary-Mirror or PS – Primary-Secondary
Number of Rows High (8-48)
34 mm pixel to pixel spacing
LED Color (monochrome or tri-color)
M – Mirror Display, S – Secondary Display
A typical display system consists of a Windows
running Venus
®
1500 software and one or more displays. The displays are offered as
single-face units, which are single-sided stand-alone displays. They can become
double-faced by mounting them back-to- back with a second unit.
Venus 1500 is a software package that runs under Windows 98, ME, NT
or XP Home/Professional operating systems on an IBM
Refer to the Venus 1500 Software manual, ED13530, for installation and operation
of the Venus 1500 editing station.
1.4 Component Identification
The following illustrations depict some of the more commonly accessed Galaxy
display components. Because Daktronics occasionally alters standard design to meet
customer needs, the actual display design may vary slightly from the illustrations
below.
on 4 for additional information on
1-4
This is only a brief overview. Refer to Secti
maintaining the various display components.
Com Port: A COM
port is a connector on the back of the control computer. The
COM port is used to control the display network through either a 9- or a 25-pin serial
connector.
®
based personal computer (PC)
®
®
-compatible computer.
4.0, 2000,
Introduction
Page 11
Controller: The controller is the “brains” of the display. Shown below in
Figure 2,
the controller receives signal information from the control computer, translates it,
and activates the appropriate pixels on the display accordingly.
Figure 2: Version 3 Controller
Control Area Network: Serial Communication Protocol supporting distributed realtime control and multiplexing. The light and temperatures sensors use this type of
protocol.
Display Address: The display address is an identification number assigned to each
display of a network. Rotating the address switches on the controller sets it. 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.
Galaxy: Daktronics trademarked name for LED monochrome, tri-colored or RGB
matrix displays.
Network: A network consists of multiple displays connected to each other. Up to
240 displays can exist on one network.
LED (light emitting diode): Low energy, high intensity lighting units.
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.
Introduction
1-5
Page 12
Module: 34mm Galaxy modules are 8 pixels high by 8 pixels wide. Each is
individually removable from the front of the display. Refer to the module in
below.
Figure 3
Figure 3: 8x8 Red LED Module
Module Latch Assembly: Device utilizing a rotating retainer bar to hold the module
firmly to the display frame. There are two per module: one near the top and one near
the bottom. Use a 1/8" Allen wrench to turn the retaining bar.
Driver/Pixel Board: The LED pixels are mounted directly onto the driver/pixel
board. This board is also responsible for the switching and intensity levels of the
LEDs.
Pixel: 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 voltage DC for
one or more module driver boards.
RS232: RS232 is a standard PC communication type with a maximum cable length
of 25 feet (7.62 meters).
1-6
Introduction
Page 13
RS422: RS422 is a standard differential
communication type with a maximum cable
length of 4000 feet (1.2 kilometers).
Signal Converter: The signal converter, shown
Figure 4on the right, is a Daktronics supplied
in
unit that converts the data from RS232 to RS422,
or RS232 to fiber optic signal. The signal
converter is connected to the control PC via
straight through serial cable.
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 4: Signal Converter (RS232 to
RS422)
Figure 5: Module Numbering Example – 24x80 Front
A module is the building block of the
Galaxy display. Each module measures 8
pixels high by 8 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 from the display if
required.
Daktronics numbers modules on a Galaxy
display.
the module numbering method.
In addition, the following labeling formats might be found on various Daktronics
drawings:
Introduction
Figure 5aboveillustrates how
Figure 6on the rightbreaks down
• “TB_ _” represents a termination block for power or signal cable.
• “F_ _” denotes a fuse.
• “E_ _” stands for a grounding point.
• “J_ _” indicates a power or signal jack.
• “P_ _” signifies a power or signal plug for the opposite jack.
Figure 6: Module Numbering
1-7
Page 14
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:
• “0A-_ _ _ _-_ _ _ _” represents an assembly, such
as a circuit board and the plate or bracket to which it
is mounted. A collection of circuit boards w or ki n g
as a single unit may also carry an assembly label.
• “W-_ _ _ _” symbolizes a wire or cable. Cables may
0P-1195-0001
SN: 6343
05/19/99 REV.1
Figure 7: Typical Label
also carry the assembly numbering format in certain
circumstances. This is especially true of ribbon
cables.
Most circuit boards and components within this display carry a label that lists the
part number of the unit. If a circuit board or assembly is not listed in the
Replacement Parts List in Section 4.11, use the label to order a replacement. A
typical label is shown in
Figure 7. The part number is in bold.
1-8
Introduction
Page 15
Section 2: Mechanical Installation
Daktronics does not guarantee the warranty in situations where the display is not constantly in
a stable environment.
Daktronics engineering staff must approve an
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 will be void.
Daktronics is not responsible for installations or the structural integrity of support
tures done by others. It is the customer’s responsibility to ensure the structure and a
struc
qualified structural engineer has approved 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 displays. The information contained in this
section is general information only and may or may not be appropriate for your
particular installation.
A qualified individual must make all decis
display.
Read both the mechanical and electrical installati
before beginning any installation procedures.
y changes that may effect the weather-tightness
ions regarding the mounting of this
on sections of this manual
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
hardware is capable of supporting the display, and will agree with local codes.
Before beginning the installation proces s, verify the following.
• 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: 3" of unobstructed space is available below the display for filter
removal from the display. 1-¼" of unobstructed space is available above the
top of the display to remove the eyebolt and plug the hole properly.
Fans are mounted in the bottom of the display for 8-32 high displays and in the back
sheet for ventilation on the 40 and 48 high displays. Maintain a minimum distance of
3" (7.62cm) below the display to maintain proper airflow and maintenance (removal
and cleaning/replacement of the filter). Refer to Drawing B-178625 or B-178626 for
additional information.
If the display cabinet is completely enclosed:
• 6 square inches of unobstructed opening per module must be provided to
ensure adequate cooling.
• Allowances must be made to compensate for the percentage of material
covering the openings in the structure.
• For adequate cooling, forced ventilation may be required. If air is forced
into the enclosed cabinet, 10 cubic feet per minute must be provided per
module (10.64" x 10.64" active area).
If these requirements are not met, the Galaxy display warranty may be void.
2.4 Lifting the Display
The top of the displays 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 below 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.
Do not attempt to permanently support the display by the eyebolts.
Figure 8: Lifting the Display (Correct, Left; Incorrect, Right)
If removing the eyebolts, adequately seal the holes using ½-13 bolts and sealing
washers. Silicone along the threads to ensure that water does not enter the display.
The method used to mount displays can vary greatly from location to location. For
is reason, only general mounting topics can be addressed in this manual.
th
It is the responsibility of the installer to
meet local codes and standards. The mounting hardware and method is also the
responsibility of the installer.
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 fou r -f oo t hori zontal section may
not exceed ¼".
• The mounting structure will not give way at any unsupported points after
the display is mounted.
The back of the display is equipped with 2 x 2 x ¼" x 3" long steel clip angles at the
cations shown in Drawing B-178625 and Drawing B-178626. These angles may
lo
be used for mounting purposes. Remember to have all mounted displays inspected by
a qualified structural engineer.
Refer to D
number of attachment points needed and the wall structure must be reviewed by a
qualified structural engineer and meet all national and local codes. It is the
customer’s responsibility to determine the proper wall mounting method and
location. Daktronics recommends using all clip angles as attachment points.
rawing B-178625 or B-178626 for a suggested wall mount method. The
1. Carefully uncrate the display. Look each side of the display over for
possible damage 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 Drawing B-178625 or B-178626.
4. Refer to Section 3 for information on routing power and signal.
5. After installation is complete, carefully inspect the display for any holes
that may allow water to seep into the display. 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.
............Drawing B-178625
........Drawing B-178626
ensure the installation will adequately
2.6 Optional Temperature Sensor
If an optional temperature sensor is to be used with the display, see Appendix C for
mounting and signal connections.
Mechanical Installation
2-3
Page 18
Page 19
Section 3: Electrical Installation
Only a qualified individual should terminate power and signal cable within 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 9on the rightillustrates a typical ribbon
connector. To disconnect the ribbon cable, push the
plastic clips on the sides to unlock and remove the
jack.
Before replacing a ribbon cable connector, spray it
with DeoxIT
foreign matter that may cause 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.
2. Termination Blocks:
Termination blocks are usually 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. Tighten all screws firmly to ensure a
good electrical connection. Refer to
the right.
™
contact cleaner to remove any
Figure 10 on
™
Figure 9: Ribbon
Cable Connector
Electrical Installation
Figure 10: Termination
Block
3-1
Page 20
3. Phoenix
™
-Style Connectors:
Phoenix-style connectors, which are usually
green, are often used for signal termination on
circuit boards. Refer to
Figure 11 on the right.
Strip one-quarter inch of insulat i on fr om the
wire prior to termination. To remove a wire,
turn the above screw counter-clockwise to
loose the connectors grip on the wire. To insert
a wire, push the bare wire into the connector
and turn the above screw clockwise to lock the
wire into place.
4. Mate-n-Lok
™
Connectors:
Figure 11: Phoenix Connector
The Mate-n-Lok connectors found in the displays are
white and come in a variety of sizes.
Figure 12 on the
right illustrates a four-pin Mate-n-Lok connector. To
remove the plug from the jack, squeeze the plastic
locking clasps on the side of the plug and pull it from
the jack.
5. Phone Jacks (RJ11/RJ45 Connectors):
RJ connectors, as seen in
Figure 13 on the lower right,
are similar to the telephone connectors found in
homes. 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
that may cause signal problems. In addition, apply a
generous amount of CaiLube
™
contact cleaner to remove any foreign matter
™
protector paste to the
Figure 12: Mate-n-Lok
Connector
plug before inserting it into the jack. This paste will
protect both the plug and the jack from corrosion.
The six-pin connectors found in the display are keyed
connectors, meaning that they will only go together
one way and should not be forced. To remove the
connector squeeze the plastic tab and gently pull the
plug from the jack.
6. Quick Connect Jack:
The display uses quick connect jacks for the
connection of the temperature sensor, the client radio,
and connection of the primary to the secondary or
mirror display. The quick connect jacks are located
on the back of the display and when not used the
attached cover should be kept closed.
Figure 13: RJ45
Connector
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.
Figure 14: RS232/6pin Quick Connect Jack
3-2
Electrical Installation
Page 21
3.2 Control Cable Requirements
RS232
This cable is a 2-conductor shielded cable used to transmit an RS232 signal
(Daktronics part number W-1117). This shielded cable should not be subjected to
mechanical flexing after installation. This cable is not for direct burial and should be
routed in a dedicated, grounded metallic conduit at the base of the sign structure.
This cable has a maximum length of 25 feet (7.6 meters).
RS422
This cable is a 4-conductor shielded cable used to transmit an RS422 signal
(Daktronics part number W-1234). This shielded cable consists of paired wires. They
should not be subjected to mechanical flexing after installation. This cable is not for
direct burial and should have one of the following routings:
• In dedicated metallic conduit. Power and signal cable cannot be run in
the same conduit.
• Inside buildings − if cable is not in conduit, keep away from interference
signals.
With interference signals (such as power conductors, intercom, etc.) typically a two-
ot separation is required. The maximum length of an RS422 signal cable is 4,000
fo
feet (1.22 km).
Modem
The modem option will use standard telephone cable routed in conduit. Do not run
power and phone cable in the same conduit. The local telephone company will
need to assist in this installation. Ask the telephone company which color is used for
the TIP wire, and which color for the RING wire for signal hook up.
Note: T
board/communications system.
he telephone lines must be dedicated lines and not run through a switch
Fiber Optic
This cable is a 4-fiber cable (Daktronics part number W-1376). Two fibers are used
for display communications and the other two are saved for spares. The cable may be
either direct burial or routed in conduit but it should not be subjected to mechanical
flexing. The maximum length of a fiber optic cable is 2,000 feet (611.6 meters).
Radio
The Server radio, connected to the computer through a J-box, requires an 18-gauge
six-conductor cable (Daktronics part number W-1370). Four conductors will be used
for the signal and two for power. This wire needs to be in conduit when exposed to
outdoor conditions out to the server radio. The maximum distance from the J-box to
the server radio is 1000 feet (305.8 meters).
The Client radio at the display comes with cable that is rated for outdoor use and
s not need to be in conduit. Note: Secure excess cable to the structure to prevent
doe
it from being pulled loose by weather or vandalism.
Electrical Installation
3-3
Page 22
3.3 RJ Connector Cables
Two types of RJ connectors are used in the
display. There is the 6-pin RJ11 and the 8pin RJ45.
a typical RJ11 connector. These connectors
can be found on many telephones and
LANs.
The cables used in the display are straight
through cables, meaning that the wire to
pin one on one end is the same as pin one
on the other end, and so forth. When
installing a network, and on cables exterior
to the display, flipped cables are often used. This cable has one end that is the mirror
image of the other end (i.e. the cable is flipped). Refer to
standard flipped cable.
Notice in
opposite on the other connector. When installing a network, it is not easy to
remember in which direction the previous end was oriented. One simple way to
avoid confusion is to standardize the color code, having one color for the connector
going into the output of a sign and the opposite color for a connector going into the
input of a sign. This will help ensure correct cabling since cables are always installed
from the output jack of one sign to the input jack of the next sign.
Figure 15 on the right illustrates
Figure 16belowthat the color code on one connector must be made the
Figure 15: 6-Conductor RJ11 Connector and Cable
Figure 16below for a
3-4
Figure 16: Flipped Cable with RJ Connectors
Installing an RJ Connector
Installing an RJ connector on the end of the conductor
cable is a simple task when the correct tools are used. The
RJ crimping tool (Daktronics part number TH-1033)
performs two separate steps.
First, use the crimping tool to strip the outer insulation
from the inner wires. This does not result in bare wires
since only the gray outer jacket is removed. After correct
stripping, the wire will appear as shown in
Figure 17
on the right.
The crimping tool is then used to crimp the RJ connector onto the cable. The RJ
connector is locked into a special socket in the tool. The stripped wire is inserted into
the RJ connector. Finally, the tool is squeezed like a pliers to crimp the connector
onto the wire. This completes the installation of an RJ connector onto the wire.
Daktronics does not include the conduit. Refer to Drawing B-178625 and Drawing
B-178626 for your display size located in Appendix A for approximate locations for
power and signal conduit. Separate conduit must be used to route:
• Power
• Signal IN wires, including phone line
• Signal OUT wires (if signal is required for another display)
Knockout holes for ½" conduit are located at the bottom right (rear view) of th e back
of the display (refer to Drawing B-178625 or B-178626 for your display.
For displays with more than one face, signal and temperature sensor wiring between
displays is normally completed using the quick connect interconnect cable. If not
using the quick connect interconnect cable, the separate signal and temperature
sensor wires can be routed through the same conduit.
3.5 Preparing for Power/Signal Connection
Reference Drawings:
Component Layout Diagrams..................................Refer to Appendix A
1. Punch or use ½ " (0.875) conduit holes for the desired conduit openings. Be
careful that none of the internal components are damaged. Attach the
conduit.
2. Remove the bottom left two
modules (AX01 and AX02) to
expose the power enclosure and
signal panel. Use a
wrench to turn the latch access
fasteners one-quarter turn. Turn
the top latch clockwise and the
bottom latch counter-clockwise.
Lift each module away from the
display; reach behind it and
disconnect all power and signal
connections.
3. Locate th e controller and power
termination box for these
displays in the Component
Layout Diagram.
4. The controller receives the
incoming signal and relays it to
the individual modules.
5. Route power to the display
through a fused disconnect switch capable 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.
1
/8" Allen
Figure 18:
ning the Display
Electrical Installation
3-5
Page 24
wer conductors from the disconnect to the display should be routed
6. Po
through conduit in agreement with local code.
7. Yo
u may route the signal cable from the control computer to the display at
this time also. Be sure to run the power and s ignal cables in a separate
conduit.
3.6 Power
Power Requirements
Reference Drawings:
Power Specs, 8x48-48x128 Displays, 3 LED Pixel..... Dra
Power Specs, 8x48-48x128 Displays, 4 LED Pixel..... Dra
Power Specs, 8x48-48x128 Displays, RG .................. Dra
Refer to the appropriate P
for your display. Each uses a 120VAC or 120/240 VAC single-phase power source.
Depending on the module color and display size the power sup ply may vary.
Do not connect the displays to any voltage other than that listed on the
onics product label.
Daktr
Proper power installation is imperative for proper display operation. The following
b-sections give details of display power installation.
su
wing A-179874
wing A-179875
wing A-179876
ower Spec Drawing for voltage and current requirements
Grounding
This display 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 grounding and bonding of the sign.
Displays mu
National Electrical Code
less.
The display system must b
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.
The material of an earth-ground electrode differs from region to region and from
nditions present at the site. Consult the National Electrical Code and any local
co
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.
st be grounded according to the provisions outlined in Article 250 of the
®
. Daktronics requires a resistance to ground of 10 ohm s or
e connected to earth-ground. Proper grounding is
3-6
Electrical Installation
Page 25
Figure 19:Display Grounding
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 in 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 in the display panel board.
Power Installation
There are two considerations for power installation: installation with ground and
neutral conductors provided and installation with only a neutral conductor provided.
These two power installations differ slightly, as described in the following
paragraphs:
rInstallation with Ground and Neutral Conducto s Provided
For this type of installation, refer to Figure 20. 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 power
disconnect within sight of or at the sign.
Figure 20: Installation with Ground and Neutral Conductor Provided
Electrical Installation
3-7
Page 26
Installation with Only a Neutral Conductor Provided
Installations where no grounding conductor is provided must comply with article
250-32 of the National Electrical Code. If the installation in question meets all of the
requirements of article 250-32, the followi n g guidelines must be observed:
• Connect the grounding electrode cable at the local disconnect, never at the
sign panel board.
• A disconnect that opens all of the ungrounded phase conductors should be
used.
• The neutral and the ground conductors should be bonded in the sign panel
board.
Refer to
Figure 21 below for installation details.
Figure 21: Installation with only Neutral Conductor Provided
Power Connection
Reference Drawings:
Assy; Power Termination Box ..................................... Drawing A-127361
Schematics...............................................................Refer to Appendix A
Incoming power is connected within the power termination enclosure. Complete the
following steps to terminate the hot and neutral wires at the termination block within
the enclosure. Refer to Drawing A-127361 and the appropriate Schematic for your
display size.
1. Access the enclosure by removing the left bottom two modules as described
in Section 3.5.
2. Route the power cables through the power conduit in the rear of the sign
and to the enclosure.
3. Conn ect the white neutral wire to neutral bus.
4. If one power line is being terminated (120VAC), connect the black “hot” wire to L1. Install jumper per Drawi ng A-127361.
5. If two power lines are being terminated (120/240VAC). Connect the second
“hot” wire to L2 and remove the jumper.
6. Connect the green grounding wire to the grounding bus E41. Refer to
on the previous page.
19
Figure
3-8
Electrical Installation
Page 27
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 all 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.
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
Figure 22: Signal Termination at Display (Front View)
The AF-3160 is designed for quicker connection to other displays and other
additional equipment. Connection of the first display to the control equipmen t needs
to be wired to the controller, modem, fiberboard, or surge suppression card in that
display. Depending on the display type ordered the following cables may be
provided with the display:
1. Interconnect cable from Primary to Secondary, length 4 feet
2. Interconnect cable from Primary to Mirror, length 6 feet.
3. Temperature sensor with quick connect cable, length 25 feet
4. Client radio with quick connect cable, length 25 feet
Electrical Installation
3-9
Page 28
RS232
Reference Drawings:
System Riser Diagram, RS232 ................................... Drawing A-174341
Schematic, Signal Wiring, Internal, W/Quick Connect Drawing B-177662
The RS232 controlled display requires the use of a J-box within 25 feet of the
display, as shown below in
be connected using a quick connect cable or wired directly to the controller inside
the display. The cable from the J-box to the display must be routed though conduit.
Do not run signal and display power through the same conduit.
1. If using a quick connect cable, connect from the J-box to J33 on the back of the display.
2. When connecting directly to the display, terminate one end to the terminal
block at the J-box and the other end of the wire to the 6-position terminal
block on the controller labeled “RS232 IN” (A31-TB1).
Drawing B-177662, show the terminal block wiring, and Drawing B177838 shows the controller.
The controlling laptop computer connects to the J-box through the serial cable (refer
to Drawing A-174341).
Figure 23. From the J-box to the display, the signal may
Figure 24 and
Figure 23: RS232 Display Layout
3-10
Electrical Installation
Page 29
Figure 24: RS232 J-box to Controller Board
J-Box to Controller Board (A31)
J-Box Terminal
Block
Pin 1 (TX-P Black Pin 5 (RX-1)
Pin 2 (RX-P) Clear/Red Pin 3 (TX-1)
Pin 3 (GND) Shield Pin 4 (GND-N)
RS422
Reference Drawings:
System Riser Diagram, RS422....................................Drawing A-174135
Schematic, Signal Wiring, Internal, W/Quick Connect.Drawing B-177662
A RS422 controlled display requires the use of signal converter (0A-1127-0237) near
the computer. From the signal converter, cable is run to the surge board assembly in
the display. The cable from the signal converter to the display must be routed though
conduit. Do not run signal and display power through the same conduit. Refer to
Figure 25 and Drawing A-174135 for system layout.
1. If using a quick connect cable, signal will run from the signal converter to a
box at the base of the display. From that junction box, connect to J32 on
the back of the display.
2. When connecting directly to the display, terminate one end at the signal
converter and the other end of the wire to the 6-position terminal block on
the surge board assembly labeled “RS422 IN” (A34-TB1). Drawing
B-177662 and
Figure 26 show the terminal block wiring.
Field Cabling
Controller Board
TB1 (RS232 In)
Electrical Installation
3-11
Page 30
Figure 25: RS422 Display Layout
Figure 26: Signal Converter to Surge Board Assembly
Signal Converter to Surge Board Assembly
Signal Converter
(J4/J5)
Pin 1 (GND) Shield Pin 1 (A GND)
Pin 2 (RX-P) Red Pin 2 (D1OUT-P)
Pin 3 (RX-N) Black Pin 3 (D1OUT-N)
Pin 4 (TX-P) Green Pin 4 (D1IN-P)
Pin 5 (TX-N) White Pin 5 (D1IN-N)
Pin 6 (GND) Pin 6 (A GND)
Field Cabling
3-12
Surge Board Assembly
TB1 (RS422 In)
Electrical Installation
Page 31
Modem
Reference Drawings:
System Riser Diagram, Modem...................................Drawing A-174342
Schematic, Signal Wiring, Internal, W/Quick Connect.Drawing B-177662
A modem-controlled display requires the use of an internal or external modem at the
computer. The local phone company must provide a dedicated phone line to the
display and identify the colors used for the Tip wire and Ring wire. The phone cable
must be routed though conduit. Do not run signal and display power thr ough the
same conduit. Refer to Drawing A-174342 and
1. If using a quick connect cable, the phone line will terminate to a junction
box at the display and then a quick connect cable will connect the phone
line to J32 on the back of the display. A 6-conductor phone cable with
RJ11 connectors (Daktronics part number 0A-1137-0160) relays data from
the quick connect input board to the modem.
2. When connecting directly to the modem in the display, terminate the phone
line to TB2 on the modem as shown in
provided a phone termination box in the display, a straight phone cable can
be connected from the box to the J5 Phone IN on the modem board.
Drawing B-177662 shows the terminal block wiring.
3. A str a ight through RJ45 cable (Daktronics part number 0A-1229-0054) transfers data from J6 on the modem to J3 (RS232 IN) on the controller.
Note: The jumper X1 on the controller board must be closed while the display
powers up to recognize that a modem is being used with the display.
Figure 27for system layout.
Figure 28. If the phone company
Figure 27: Modem Display Layout
Figure 28: Modem Phone Line Termination, Modem Jumper
Electrical Installation
3-13
Page 32
Fiber Optic
Reference Drawings:
System Riser Diagram Fiber ....................................... Drawing A-174344
Schematic, Signal Wiring, Internal, W/Quick Connect Drawing B-177662
When fiber optic cable is used, a signal converter (0A-1127-0239), connected to the
computer, relays signal via fiber signal cable to the fiberboard (J4/J5) in the display.
An 8-conductor cable with RJ45 connectors (Daktron ics part number 0A-1229-0054)
relays the signal from J7 on the fiberboard to J3 (RS232 IN) on the controller. When
connecting fiber cables, always connect transmit at the signal converter to receive at
the display and receive to transmit. Refer to Drawing A-174344 and
the system riser and to Drawing B-177662 and
Figure 30 for fiber termination
locations.
Figure 29 for
3-14
Figure 30: Signal Converter to Fiber Card
Electrical Installation
Page 33
Signal Converter to Fiber Board
Signal
Converter
J2 Transmit (TX1) (Color Varies) J5 Receive (RX2)
J3 Receive (RX1) (Color Varies) J4 Transmit (TX2)
Field Cabling
Fiber Control
Card
Venus 1500 Radio
Reference Drawings:
System Riser Diagram, QC Outdoor Radio, Gen 2.....Drawing A-185359
Schematic, Signal Wiring, Internal, W/Quick Connect.Drawing B-177662
A radio-controlled display requires a Server radio connected to the control computer
and a Client radio at the display. The radios must be in line-of-site of each other. The
Client radio is provided with 25 feet of weather resistant pre-terminated cable. One
end of the cable is pre-terminated to TB1 inside the radio enclosure, and a quick
connect plug is terminated at the other end of the cable. The cable will be terminated
to the display with the quick connect plug to J33 on the display as shown in
32. Refer to Drawing A-185359 and Figure 31 for the system riser. Additional
drawings for the Server Connections are in the Venus 1500 Radio Manual
(ED13932).
Figure
Figure 31: Radio Display Layout
Figure 32: Client Radio Display Connection
Electrical Installation
3-15
Page 34
3.8 Signal Termination Between Two (or More) Signs
Reference Drawings:
System Riser Diagram Fiber ....................................... Drawing A-174344
Schematic, Signal Wiring, Internal, W/Quick Connect Drawing B-177662
The quick connect cable is the most common method of
terminating signal between two displays. The cable goes
from the RS422 OUT (J34) on the primary display to the
RS422 IN (J32) on the secondary display. See Figure 33
on the right.
If the displays are not back-to-back, or are too far apart for
the interconnect cable to reach, a 4-conductor shielded
cable of the correct length is used as shown in
One end will connect at the “RS422 OUT” 6-position
controller board terminal block (A31-TB3) in the first
display, and terminate on the “RS422 IN” 6-position
controller board terminal block (A31-TB2) on the second
display. When not using the quick connect cable, wire
must be in conduit.
Figure 34.
Figure 33: Display Interconnect
3-16
Figure 34: RS422 Interconnection
Primary - RS422
Out (A31-TB3)
Pin 1 (GND) Shield Pin 6 (GND)
Pin 2 (D2OUT-N) Red Pin 5 (D1IN-N)
Pin 3 (D2OUT-P) Black Pin 4 (D1IN-P)
Pin 4 (D2IN-N) Green Pin 3 (D1OUT-N)
Pin 5 (D2IN-P) White Pin 2 (D1OUT-P)
Pin 6 (Shield) Pin 1 (Shield)
RS422 Interconnection
Field Cabling
Secondary - RS422
IN (A31-TB2)
Electrical Installation
Page 35
Fiber Interconnection
A fiber cable can be used in connecting two or more displays in the fiber
interconnection method. Connect the fiber cable to the fiber cards of the display as
described in Drawing A-174344 and on the following table:
Face A Data Out
(A34)
J2 Transmit (TX1) (color varies) J5 Receive (RX2)
J3 Receive (RX1) (color varies) J4 Transmit (TX2)
Field
Cabling
3.9 Optional Temperature Sensor
If an optional temperature sensor will be used with your display, see Appendix C for
mounting and signal connections.
3.10 First Time Operation
When first operated, the display will run through an initialization in which it will
display the following:
oduct Name (Galaxy®)
1. Pr
splay Size (Row x Column)
2. Di
3. Sha
4. Bo
5. Firm
6. Firm
7. Har
8. Soft
9. I
10. Su
11. C
12. Li
13. Display
ding (64 Mono)
otloader Version (OS X.XX)
ware Number (ED13305)
ware Revision (Rev X.XX)
dware Address (HW:XX)
ware Address (SW:XX)
P Address: (172.16.192.25)
bnet Msk: (255.255.0.0)
OM1 Configuration (C1:V15) ((Modem C1:V15) If a Modem is present)
ne Frequency (CLK:60 Hz)
Name Description
Face B Data In
(A34)
Electrical Installation
3-17
Page 36
Page 37
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. Only qualified service personnel may acces s 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 series AF-3160 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 display information:
• Signal Routing Summaries provide a basic explanation of the way signal
travels through the display.
• Power Routing Summaries provide 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 safe, working order.
• Troubleshooting lists some possible display malfunctions and provides a
number of possible causes for that malfunction.
• Replacement Parts List includes the part number and description of
display components that could possibly need replacing during the life of this
display.
• Exchange and Repair and Return Programs explain the Daktronics
component return policy.
Maintenance and Troubleshooting
4-1
Page 38
4.2 Signal Summary
The signal routing for the display can be summarized as follows:
1. Dat
2. For m
3. Fro
4. Dat
a from the control computer, which runs Ven us 1 50 0 soft ware , tra vel s
via RS232, RS422, modem, fiber optic cable, or radio signal into the
display.
ultiple face displays or a display network, an RS422 interconnect
cable (most typical) relays signal between the controller of the first display
and the controller in the second display. Fiber cables can also be used.
m the controller, the signal then travels over 20-conductor ribbon cables
from the controller (J11 through J16 provide signal out) to J2 on the driver
of the first column of modules in the display.
a exits at J1 and is relayed to J2 of the next driver board and so on,
traveling down the entire row of modules. This displa y dat a i s use d to
control the LEDs.
The power routing for the display can be summarized as follows:
1. Inc
2. Pow
3. Depe
4. M
oming power terminates at the power termination enclosure. Before
leaving the enclosure, power is sent through a circuit breaker and an RFI
electrical filter.
er for the controller board passes through a transformer located on the
controller/power panel. The transformer steps down the power to
approximately 10 VAC.
nding on pixel count and color, power supplies (6.5VDC, 9VDC, or
11VDC) are used to power the modules. Power supplies are preset. Contact
Daktronics Customer Service for the proper settings.
onochrome or tri-color Galaxy displays can use red, amber, or red and
green LEDs. See your display Schematic for power supply wiring
information.
• Each 9VDC power supply provides power to eight modules in a display
that uses 3 LEDs per pixel. In those displays that have 4 monochrome
LEDs per pixel, 11VDC power supplies provide power to four
modules.
• As a standard, red displays use 3 LEDs per pixels, amber displays use 4
LEDs per pixel, and red/green displays use 2 red and 2 green LEDs per
pixel.
• Tricolor RG displays use two different power supplies for each of the
eight modules. The 6.5VDC power suppli e s po wer the red LEDs and
the 9VDC power supplies provide power for the green LEDs.
The following sub-sections address servicing of th
• transformer, RFI filter
• controller
• modules, drivers and power supplies
The sub-sections also address any diagnostic LEDs,
connectors found on the unit. On the Component Layout Diagrams, the
components are denoted as follows:
Component Deno ted As Location
Filter and Transformer 0A-1215-4002 (120 VAC) Inside the power termination box
Power Supplies
Light Detector 0P-1247-000 3 Behind\below the bottom left module
Fiber Board 0P-1127-0024
RS422 Surge Card 0P-1146-0031
Disconnect power before servicing any internal components.
Controller
Modules
Modem 0P-1279-0003
0A-1229-0005
0A-1208-3005
0A-1208-3006
0A-1208-2504
0A-1213-4022-4A
0A-1213-4026-4A
0A-1213-4013-3R
0A-1213-4034-RG
wing A-178959
wing A-178960
er to Appendix A
r to Appendix A
e following display components:
fuses, and signal/power
Inside the controller/power panel
ind the bottom left module)
(beh
Over entire face of the display
(inclu
des driver)
Behind modules (refer to the display’s
Schematic)
Refer to Drawing A-178959 or
DrawingA-178960
Refer to Drawing A-178959 or
Drawing A-178960
Refer to Drawing A-178959 or
Drawing A-178960
Maintenance and Troubleshooting
4-3
Page 40
Transformer and RFI Filter
Reference Drawings:
Assy, Power Termination Box ..................................... Drawing A-127361
Schematics...............................................................Refer toAppendix A
fTrans ormer
The transformer is located in the upper portion of the power termination box. To
replace the transformer, first disconnect and label all the wires attached to it. Turn off power to the display before removing the wires. Then release the hardware,
securing it to the inside of the enclosure. Position the new transformer in its place,
and tighten it down. Re-connect all the wires using the display’s schematic as a
reference.
RFI Filter
The RFI electrical filters are mounted above and to the side of the power termination
box (Z1 and Z2 in Drawing A-127361). Like the transformer, first removing all
connecting wires, and then releasing the attachment hardware can replace the filters.
Install the new filter using the display’s Schematic as a wiring reference.
The controller sends data to the modules. Refer to the signal summary in Section 4.2
and Drawings A-178959, A-178960, and B-177838 for more information and the
position of the controller board.
Figure 36 below illustrates a typical controller.
Figure 36: Controller Component Layout
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 run the test mode.
Communication to the display is not possible while the display is in test mode using
address 0.
Maintenance and Troubleshooting
4-5
Page 42
Complete the following steps to remove the controller from the display:
isconnect power from J5.
1. D
emove all power and signal connections from the board. “Locked”
2. R
connectors are released by pushing apart the latches then carefully pulling
them from the jack. When replacing the board, it is helpful to have the
cables labeled for easier replacement.
move the six screws holding the board in place with a 3/16” nut driver.
3. Re
llow the previous steps in reverse order to install a new controller board.
4. Fo
The address on the controller is only recognized on power up. When changing the
dress on the controller board, power down the display, change the address, and
ad
reenergize the display.
The following chart illustrates several common hexadecimal addresses:
Controller Address Settings
Upper Lower Address
0 0 Test Mode
0 1 1
0 2 2
0 3 3
0 4 4
0 5 5
0 6 6
0 7 7
0 8 8
0 9 9
0 A 10
0 B 11
0 C 12
0 D 13
0 E 14
0 F 15
1 0 16
1 1 17
… … …
4-6
F 0 240
Maintenance and Troubleshooting
Page 43
Four 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 On when U15 contains a valid logic program.
DS6 Red U7 Programmed On when U7 contains a valid logic program.
DS7 Red Link On when Ethernet interface is in the link-up condition. Flashes
when the Ethernet chip detects transmits or receives activity.
DS8 Red Speed On when the Ethernet interface is at 100Mbps. Off when the
Ethernet interface is at 10Mbps.
DS9 Red Duplex On when the Ethernet interface is at full duplex. Off when the
Ethernet interface is at half-duplex.
DS10 Red Collision Flashes when the Ethernet interface detects a collision in half-
duplex.
DS11 Red +5V On when +5V power supply is functioning.
DS12 Red +3.3V On when +3.3V power supply is functioning.
DS13 Red +2.5V On when +2.5V 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.
Temp/Light
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 runn ing
correctly. Normal flash rate is about once a second.
Flashes faster when the sensor is transmitting temp or
light information.
Maintenance and Troubleshooting
4-7
Page 44
Modules and Drivers
Reference Drawings:
Comp. Layout Diagrams.......................................... Refer to Appendix A
The module and driver board are a single functional unit. To remove a module,
complete the following steps:
1. Locate the latch access fasteners on the module. One is centered below the
top row of pixels and one is centered
above the bottom row.
2. With a 1/8"Allen wrench, turn the latch
access fasteners a quarter turn as seen in
Figure 37 on the right. The top one
should be turned clockwise and the
bottom one counter-clockwise.
3. Pull the display module far enough to
reach around the back and disconnect the
ribbon cables and power cable.
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 good
condition if it is to prevent water from
seeping into the display.
• 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.
Each module assembly is made up of a module housing (containing LEDs and the
driver) and a louver assembly.
Figure 37: Removing a Module
4-8
Power Supplies
Reference Drawings:
Schematics.............................................................. Refer toAppendix A
Comp. Layout Diagram.............................................Refer toAppendix A
The LED power supplies are identified as assemblies in the Component Layout
Diagrams.
The LED power supplies are identified as assemblies.
• In displays with 3 LEDs per pixel, each power supply unit controls eight
modules.
• In displays with 4 LEDs per pixel, each power supply unit controls four
modules; a power supply assembly (two power supply units) controls eight.
• In RG or tri-color displays, each set of power supplies control eight
modules.
Maintenance and Troubleshooting
Page 45
Complete the following steps to remove a power supply from the display:
1. Remove the module directly in front of the failed power supply.
2. Disconnect and label all the wires connected to the power supply.
3. Remove the hardware holding the power supply in place to free the unit.
4. Follow these steps in reverse order to install a new power supply. Refer to
the display’s Schematic when reconnecting the wires.
Light Detector
Reference Drawings:
Schematics.............................................................. Refer toAppendix A
Comp. Layout Diagram............................................ Refer toAppendix A
The light sensor is internally mounted and wired at Daktronics. It is located in the
bottom left corner on the front of the primary display as shown in
Component Layout Diagram the sensor is identified as assembly 0A-1241-4013
(LT). The light and tempe rature sensors are part of the same CAN network and are
addressed accordingly. The light sensor is address 2.
A 4-conductor cable connects the light sensor to the controller. The cable is
terminated at the terminal block on the light sensor and to a jack that plugs into the
controller. When the displays are mounted back-to-back, only the primary side has a
light sensor
If a modem was included with the display, it is located inside the display next to the
controller board. Refer to Drawing A-178959 or A-
178960 for modem location.
1. To replace a modem, first disconnect the power
and signal connections (refer to
the right for the location of the connectors).
2. The modem is held in place with four screws.
Remove the screws using a 3/16” nut driver,
and lift the modem out of the display.
3. Install the new modem, replace the screws, and
reconnect power and signal cables.
The modem module has five LEDs.
• The power LED should remain lit while power
is applied to the modem.
• The modem RX and TX will flash when
communicating.
• The carrier detect LED will light when the
modem has established communication to
another modem.
• The PC connect LED is not used in the display application.
The modem board also has several input and output jacks:
• J3 is the power input for 12VAC
• TB2 is a phoenix connector to terminate the Tip and Ring wires
• J5 is an RJ11 jack for termination of a pre-terminated phone line
• J6 is the RS232 RJ45 output to the controller
• J2, TB1, and TB3 are not used in this display application
A modem system requires a jumper (X1 ) to be closed on the controller board. The
jumper position is only recognized on power up. Refer to
location, and the jumper settings.
If a fiberboard is included with the display, it is located inside the display next to the
controller board. Refer to Drawing A-178959 or A-178960 for fiberboard location.
1. To replace a fiber optic board, first
disconnect the power and signal
connections (refer to
disconnection of power).
2. The fiber optic board is held in place
with four screws. Carefully remove them
using a 3/16” nut driver.
3. Install the new fiberboard, replace the
screws and reconnect power and signal
cables.
The fiber module has three LEDs.
• The power LED (DS1) should remain lit
while power is applied to the module.
• The receive LED (DS2) will flash when
the display fiberboard is accepting signal
from the signal converter.
• The transmit LED (DS3) will flash when
the display fiberboard is sending to the
signal converter.
In addition, the fiber module has two input fiber
connectors, which the computer or the previous display connects to, and two output
fiber connectors that connect to the next display. A straight through RJ45 cable (0A1229-0054) connects from J7 on the fiberboard to J3 on the controller board.
The surge suppressor is an inline device that is used to filter the RS422 data line. It
suppresses surges down to a low voltage in order to protect the display controller’s
RS422 input. The surge suppressor must be firmly connected to the display chassis
in order to be effective. The mounting hardware used to secure the surge suppressor
is sufficient, if it is fastened properly.
If a surge board was included with the display, it is located inside the display next to
the controller board. Refer to Drawing A-178959 or A-178960 for surge board
location.
Maintenance and Troubleshooting
4-11
Page 48
1. To replace the surge board, first disconnect the
signal connections (refer to
right).
Figure 42 on the
2. The surge suppressor is held in place with four
screws. Carefully remove them using a 3/16”
nut driver.
3. Install the new surge suppressor, replace the
screws, and reconnect power and signal cables.
Figure 42: RS422 Surge Suppressor
Location of CAN Termination Jumper
Temperature and light sensors are controlled as part of a CAN network. For the CAN
network to work correctly, the network must be terminated at both ends of the
network. This is true for a single display or for multiple displays. The correct
terminations are completed during the building process. However, if the order or
number of displays is changed on-site, the terminating jumper may need to be
relocated.
W1 is the necessary location of the terminations.
4-12
Figure 43: Displays with No External Temperature Sensor
In the case of those displays that utilize a temperature sensor, the sensor is internally
terminated. Therefore, only one other termination needs to be made at the output of
the last sign in the network. The most common input location for the temperature
sensor is to the first or primary display in the network.
Figure 44: Displays with External Temperature Sensor
Maintenance and Troubleshooting
Page 49
The terminating jumper is located on the quick connect board on the inside of the
display. Most displays have both an input and an output quick connect board. When
no output board is available, the terminating jumper will be placed on the input board
of the last display. Refer to
Figure 43 and Figure 44 for more information.
Figure 45: Quick Connect Boards
4.5 Ventilation Systems (With Fans and Filters)
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
Maintenance and Troubleshooting
(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. If the fan blades have a large
accumulation of dirt and debris, this indicates that the filters must be
cleaned/changed more often. 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.
4-13
Page 50
To check the operation of the fans, push the bypass button (momentary contact) on
e thermostat enclosure to temporarily turn the fans on (The bypass button is located
th
behind A102, top row, and second module from the left).
• Hold your hand or a piece of light paper beneath the display to detect air
movement.
• If the fan does not turn or does not operate smoothly, replace it.
Filters must be checked once a year or after
whichever comes first.
Filters can be cleaned with water and a mild detergent, such as dish soap. (Allow the
filters to
also be used to clean the filters, provided the nozzle is held at least 6" away from the
filter, the pressure is no greater than 60 psi, and the air is blown through the filter in
the opposite direction from which air normally flows. The arrow stamped on the
frame filter indicates airflow direction.
dry completely before reinstalling them in the sign.) Compressed air can
4.6 Thermostats
Reference Drawing:
Comp. Layout Diagrams
A thermostat controls when the ventilation fans are turned on in the display. Refer to
e Component Layout Diagram and
th
The ventilation fans turn on when the inside of the display reaches 85° F (29° C),
and turn off at 70° F (21° C).
every 1,500 hours of operation,
...........................................Refer to Appendix B
Figure 38 for the location of the thermostat.
4.7 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.
4.8 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 riv
should be checked and tightened or replaced as required.
• Excessive Dust Buildup
Occasionally it may be necessary to vacuum the inside of the display
inet to remove dust/dirt buildup that may interfere with airflow.
cab
• Water Intrusion – Water Stain Marks
Water can enter the display where weather stripping has come loose or
eriorated, where fasteners have come loose allowing gaps in the panels,
det
or where moisture may be entering around hardware. Be sure to check
around the lift eyes or replacement bolts to ensure that water has not entered
there. If so, replace hardware immediately to prevent more water from
ets, have not come loose. Fasteners
4-14
Maintenance and Troubleshooting
Page 51
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 immediately to
correct the situation.
4.9 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
garbled.
A group of modules, (a column or block)
which share the same power supply
assembly, fail to work.
Entire display fails to work. • Check for proper line voltage into the power termination
Temperature always reads –196F/-127C
degrees F/ C
Display is stuck on bright or dim. • Check Manual/Auto dimming in Venus 1500 software.
• Replace/check ribbon cables on the module.
• Replace the module.
• Replace/check ribbon cables on module.
• Replace the module.
• Replace/check the ribbon cable to the first module.
• Check that the first module has power.
• Replace the first module/driver on the left side of the first
module that is not working.
• Replace the second module that is not working.
• Replace the power supply assembly on the first module
that is not working.
• Replace/check ribbon cable to first module.
• Check for bent pins on module and controller.
• Replace controller.
• Replace first module.
• Check the fuses in the power termination box.
• Check the wire connections at the power supply.
• Check power to modules.
• Replace the power supply assembly.
panel.
• Check for correct power to controller and modules.
• Check fuse in power termination panel.
• Check/replace the ribbon cable from the controller to the
modules.
• Check the voltage settings on the power supplies.
• Verify proper use of the software in the V1500 Controller
manual (ED13530).
• Replace the controller.
• (For direct displays) Check the signal cable to the
controller using the loopback test.
• Check temperature sensor connections.
• Replace the temperature sensor.
• Replace the controller.
• Check light detector cable.
• Check the address on the Light Sensor.
• Check light detector for obstructions.
• Replace the light detector.
• Replace the controller.
Maintenance and Troubleshooting
4-15
Page 52
4.10 Initialization Operation Information
Every time the display is operated, the display will run through an initialization in
which it will display the following:
oduct Name (Galaxy®)
1. Pr
splay Size (Row x Column)
2. Di
ading (32K RGB)
3. Sh
4. Bo
5. Firm
6. Firm
7. Har
8. Soft
9. I
10. Su
11. C
12. Li
13. Display
otloader Version (OS X.XX)
ware Number (ED13305)
ware Revision (Rev X.XX)
dware Address (HW:XX)
ware Address (SW:XX)
P Address: (172.16.192.25)
bnet Msk: (255.255.0.0)
OM1 Configuration (C1:V15) ((Modem C1:V15) If a Modem is present)
ne Frequency (CLK:60 Hz)
Name Description
4.11 Replacement Parts List
The following tables contain 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
numbers on labels affixed to them.
To prevent theft Daktronics recommends purchasi
manuals and replacement/spare parts.
Part Description Part Number
Controller Galaxy 8 Conn 0A-1229-0005
Module, 3R (1:1) 8x8 (30x70) 0A-1208-3006
Module, 4A (1:1) 8x8 (30x70) 0A-1208-3005
Module, 2R, 2G (1:1) 8x8 (30x70) Type 3 0A-1208-2504
Thermostat Enclosure 85-70-9L 0A-1213-4024
Digital Light Sensor 0P-1247-0003
Digital Temperature Sensor 0P-1247-0007
Filter; Air, Gasket, 7.50” x 13.50” x .88” EN-1774
Fan; 110CFM, 120VAC, (B-1006) (8,16, and 24 high) 0A-1213-4014
Fan; 245CFM, 120VAC, (B-1019) (32,40, and 48 high) 0A-1213-4010
Transformer; Pri 115V, Sec 10VCT, 3Amp (120V Displays) T-1119
Filter, RFI Line 10 AMP 120 VAC Z-1007
Modem Board; 232 Coated 0P-1279-0003
Fiber Board; RS232 to Fiber, 12V 0P-1127-0024
Surge Suppression Board, RS422 0P-1146-0031
Signal Converter (RS232/RS422) 0A-1127-0 23 7
Signal Converter (RS232/Fiber) 0A-1127-0239
Outdoor Client Radio Interface, QC, Gen 2 0A-1146-0078
Outdoor Server Radio Interface, QC, Gen 2 0A-1146-0079
Radio TX Interface J-box, signal converter 0A-1279-0161
ng a lockable cabinet to store
4-16
Maintenance and Troubleshooting
Page 53
Modem/Radio Interface J-box, signal converter 0A-1279-0168
Cable; 31-pin male to 31-pin male, 6’, Interconnect (PM to M) W-1503
Quick Connect Interface, Input 0P-1229-2001
Quick Connect Interface, Output 0P-1229-2002
Primary/Mirror 31-pin QC Interface 0P-1229-2008
Power Supply W/Harness; (3 Red) (1, A-1633) 0A-1213-2039
Power Supply w/Harness; (4 Amber) (2, A-1555) 0A-1213-2043
Power Supply w/Harness; (4 Amber) (1, A-1555) 0A-1213-2012
Power Supply w/Harness; (Red/Green) (1,A-1633,1,A-1591) 0A-1213-2042
Electrical Contact Cleaner Lubricant / Cal-Lube CH-1019
Hex Wrench, T-Handle 1/8” RT TH-1062
Manual; Venus 1500 Operator’s, Version 3.0
Manual; Venus 1500 Radio, Gen 2
ED-13530
ED-13932
4.12 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
p
roducts, 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
so
lve 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.
Maintenance and Troubleshooting
4-17
Page 54
If the replacement part fixes the problem, package
the defective part in the same box
and packaging 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.
Daktronics also offers a Repair and Return Program for items not subject to
excha
nge.
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: Packag
e and pad the item well so that it will not be damaged
in 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 description 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: 6
05-697-4444
E-mail: h
elpdesk@daktronics.com
4-18
Maintenance and Troubleshooting
Page 55
Appendix A: Reference Drawings
Refer to Section 1.1 for information on reading drawing numbers. The following drawings are
listed in numerical order by size (A, B, etc.).
Assy; Power Termination Box
CAN Wiring W/Out J
System Riser Diagram, RS
System Riser Diagram, RS
System Riser Diagram, Modem.......................................................Dra
Detail; AF-3160-24/32/40/48, Power/Control Corner
Power Specs, 8x48-48x128 Displays
Power Specs, 8x48-48x128 Displays
Power Specs, 8x48-48x80 Displays
System Riser Diagram, QC Outdoor Radio Gen2
Schematic, Signal Wiring, Internal, W/Quick Connect