Daktronics CH-1024H User Manual
Auto Racing Display
Model CH-1024H
Installation, Maintenance &
Troubleshooting Manual
ED-5891
ED-5891
Project #1081
Rev. 8 – 16 November, 1999
Copyright © 1999 Daktronics, Inc.
All rights reserved. While every precaution
has been taken in the preparation of this
manual, the publisher assumes no
responsibility for errors or omissions. No part
of this book covered by the copyrights hereon
may be reproduced or copied in any form or
by any means - graphic, electronic, or
mechanical, including photocopying, taping,
or information storage and retrieval systems without written permission of the publisher.
DAKTRONICS, INC.
Communication Solutions
Through Technology
P.O. Box 5128 331 32nd Ave. Brookings, SD 57006
Phone (605) 697-4400 or (800) 843-9879 Fax 697-4444
www.daktronics.com e-mail helpdesk@daktronics.com
Table of Contents
Section 1: Introduction..................................................................................................1-1
1.1 How To Use This Manual ........................................................................................1-1
1.2 Display Overview.....................................................................................................1-1
Section 2: Installation..................................................................................................2-1
2.1 General System.........................................................................................................2-1
2.2 Beam And Footing Selection....................................................................................2-2
2.3 Display Mounting.....................................................................................................2-2
2.4 Electrical Installation................................................................................................2-3
2.4.1 Control Signal Cable....................................................................................2-3
2.4.2 Power Wiring...............................................................................................2-3
Section 3: Maintenance & Troubleshooting..............................................................3-1
3.1 Lamp Replacement...................................................................................................3-1
3.2 Lamp Drivers............................................................................................................3-1
3.3 Digit Segmentation...................................................................................................3-2
3.4 Schematic .................................................................................................................3-2
3.5 Troubleshooting........................................................................................................3-2
3.6 Replacement Parts....................................................................................................3-3
3.7 Daktronics Exchange/Repair & Return Programs....................................................3-3
Table of Contents i
Section 1: Introduction
1.1 How to Use This Manual
This manual is designed to explain installation and maintenance of the CHTS-1024H display
system. Details for display maintenance are also given. Setup of other control equipment or
operation of the CHTS-300 timing console are not covered in this manual. For questions
regarding the safety, installation, operation or service of this system, please refer to the
telephone numbers listed on the cover page of this manual.
ΚImportant Safeguards:
1. Read and understand these instructions before installing.
2. Do not drop the control console or allow it to get wet.
3. Be sure the display is properly grounded with a ground rod at the display location.
4. Disconnect power to the display when it is not in use.
5. Disconnect power when servicing the display.
6. Do not modify the display structure or attach any panels or coverings to the
scoreboard without the express written consent of Daktronics, Inc.
The box below illustrates Daktronics drawing numbering system. The drawing number
Α7087-P08A-69945≅ is how Daktronics identifies individual drawings. This number is
located in the bottom right corner of the drawing. The manual refers to drawings by the last
set of digits and the letter preceding them. In the example, the drawing would be referred to
as Drawing A-69945. All reference drawings are inserted at the end of the first section which
references them.
1.2 Display Overview
Reference Drawing: Display, CH-1024H ..................................... Drawing A-46433
Drawing A-46433 shows a Daktronics CH-1024H display. When used with the Daktronics
CHTS-300 timing console, the Daktronics CH-1024H display will show the lap number or lap
time and the first three car positions on the display.
Introduction 1-1
Section 2: Installation
2.1 General System
Reference Drawings: Driver Enclosure, Power & Signal............... Drawing A-37915
Mounting Instructions.................................. Drawing A-38856
System Layout ............................................ Drawing A-46448
Footing and Beams..................................... Drawing A-46451
Electrical Installation................................... Drawing A-46458
Component Locations................................. Drawing A-46464
Color Code, 25-Pin J-Box ........................... Drawing A-47207
Refer to Drawing A-46448 for the general system layout. The general procedure for
installing the CH-1024H display is as follows:
• Select beam and footing recommendations from the table below.
• Dig the footing holes to install beams and footings.
• Route power and signal cables to the display and control locations.
• Mount the displays to the beams as described in Drawings A-38856 and A-46451,
and in Sections 2.2 and 2.3.
• Route power and signal wires into the displays as described in Drawings A-37915, A-
46458, A-46464, and A-47207, and in Section 2.4.
BEAM AND FOOTING RECOMMENDATIONS
DIST
TO
BTM
SCBD
8
12
16
20
24
28
8
12
16
20
24
28
8
12
16
20
24
28
DSG
WIND
VELOC
(MPH)
80
100
Installation 2-1
SCOREBOARDS
BEAM
REQUIRED
(2 EA)
W6X12
W6x15.5
W6x20
W8x24
W8x28
W8x35
W6x15.5
W6x16
W8x20
9
W8x24
0
W8x28
W8x35
W6x15.5
W8x17
W8x24
W8x28
W8x35
W12x53
FOOTINGS
DIAM
(FT)
3.00
3.25
3.50
4.50
4.50
5.00
3.00
3.50
4.00
4.25
4.25
5.50
3.00
3.50
4.25
4.50
4.75
5.25
DEPTH
(FT)
5.00
5.50
6.50
6.50
7.00
7.50
5.50
6.00
7.00
7.50
8.00
8.00
6.00
6.50
7.50
8.00
8.50
9.00
SCOREBOARDS W/
42" ADV PANEL
BEAM
REQUIRED
(2 EA)
W8x15
W8x24
W8x28
W8x35
W8x35
W12x53
W8x17
W8x28
W8x35
W12x36
W12x40
W12x53
W8x24
W8x35
W12x31
W12x36
W12x40
W12x53
FOOTINGS
DIAM
(FT)
3.25
4.50
5.00
5.00
5.25
6.00
4.00
5.50
5.50
5.00
6.00
6.00
5.00
5.25
5.25
6.00
6.00
6.00
DEPTH
(FT)
6.00
7.00
7.50
8.00
8.50
9.00
6.50
7.00
8.00
9.00
9.00
10.00
6.50
8.00
9.00
9.25
10.00
11.00
SCBD W/ 42" ADV
PANEL & MESSAGE BRD
BEAM
REQUIRED
(2 EA)
W8x17
W12x22
W12x27
W12x36
W12x45
W12x50
W8x20
W12x27
W12x31
W12x36
W12x45
W12x50
W12x19
W12x27
W12x36
W12x45
W12x50
W12x58
FOOTINGS
DIAM
(FT)
4.50
5.25
5.25
5.50
6.00
6.00
4.75
6.00
6.00
6.25
6.25
6.25
5.00
6.50
6.50
6.00
6.00
6.00
DEPTH
(FT)
6.00
7.00
8.00
8.50
9.00
10.00
6.50
7.50
8.50
9.00
10.00
11.00
7.00
8.00
9.00
10.00
11.00
12.00
These footing recommendations are based on an allowable soil bearing pressure of 300 psf
vertically and 300 psf/ft of depth horizontally. However, these recommendations are
suggestions only and each installation should be treated individually. Be sure that the
installation complies with local codes and is suitable for particular soil and wind conditions.
Daktronics assumes no responsibility for structures installed by others.
A note about beam nomenclature: For a typical beam, W6x16 for example, "W" stands for
"Wide-Flange Beam". The first number (6) is the approximate front to rear dimension of the
beam in inches. The second number (16) is the weight per foot in pounds. This numbering is
a standard in the steal industry. Widths are from 4.00 to 10.00 inches in the chart above.
2.2 Beam And Footing Selection
Reference Drawing: Footing and Beams......................................Drawing A-46451
The above contains recommendations for beams and footings. The distance in the first
column is from the ground to the bottom of the CH-1024H display, regardless if one or two
extra sections, such as an ad panel and/or message center, are added to the CH-1024H scoring
display. The second column is wind velocities that are likely to occur at the display location
in miles per hour.
The beams listed are W-section (wide flange) beams which provide maximum wind load
strength for the weight and cost of the beams. Decide how high you want your display and
what sort of wind it will be subject to. Read across the table to the appropriate column for
your display; these are the beams and footings that are recommended. Drawing A-46451
shows a typical installation of beams and footings.
The calculations for footing diameters and depths are based on the assumption that footings
are in undisturbed soils, not fill soils, with a lateral bearing capacity of 300 psf/ft of depth
horizontally. However, these recommendations are suggestions only and each installation
must comply with local codes and be suitable for the particular soil and wind conditions.
Daktronics recommends that W-section grade 36 steel be used for beam, and that 28-day
(strength 3000 psi) concrete be used for footings. Daktronics assumes no responsibility for
structures installed by others.
2.3 Display Mounting
Reference Drawing: Mounting Instructions...................................Drawing A-38856
Drawing A-38856 shows the typical mounting for your display.
Note: The bolts that secure the display sections do not go through the beams, but run along
the sides of the beam, clamping the display to the beams.
A mounting kit with mounting angles and 2" hardware are provided to mount your display.
Position the display against the mounting beams and secure the bottom of the display to both
beams as shown. Next, secure the top of the display. Once mounting angles are attached, the
display may be slid up or down to the desired height. Once positioned as desired, tighten all
bolts.
2-2 Installation
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