Daktronics CH-1318V User Manual

Auto Racing Display

Model CH-1318V

Installation & Service Manual

ED-6041

ED-6041
Project#1081
Rev. 5 - 31 July 1998

Copyright © 1991 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.

Setting New Standards Worldwide

P.O. Box 5128 331 32nd Ave. Brookings, SD 57006
Phone [phone] or [phone] Fax [phone]

Table of Contents

1. Introduction .............................................................................................................1-1

1.1 How to Use this Manual.............................................................................................1-1

1.2 Display Overview.......................................................................................................1-1

2. Installation ...............................................................................................................2-1

2.1 General System...........................................................................................................2-1

2.2 Beam and Footing Selection.......................................................................................2-1

2.3 Display Mounting.......................................................................................................2-2

2.4 Electrical Installation..................................................................................................2-2

2.4.1 Control Signal Cable.....................................................................................2-2

2.4.2 Power Wiring ................................................................................................2-3

3. Maintenance & Troubleshooting............................................................................3-1

3.1 Lamp Replacement.....................................................................................................3-1

3.2 Lamp Driver...............................................................................................................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 Unit Exchange/Replacement Procedure.....................................................................3-3

Table of Contents i

Section 1 : Introduction

1.1 How to Use this Manual

This manual explains the installation and the maintenance of the display system. 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.

Important 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

display without the written consent of Daktronics, Inc.

The box below illustrates Daktronics drawing numbering system. The drawing number
“7087-P08A-69945” is how Daktronics identifies individual drawings. This number is
located in the lower-right corner of the drawing. This manual refers to drawings by listing the
last set of digits and the letter preceding them. In the example below, the drawing would be
referred to as Drawing A-69945. Referenced drawings are inserted at the end of the first

section which references them.

1.2 Display Overview

Reference Drawing: Display, CH-1318V........................................Drawing A-47497

Drawing A-47497 shows a Daktronics CH-1318V display. The CH-1318V display along
with the use of the Daktronics CHTS-300 timing console will display the lap number and the
first five car positions on the display.

Introduction 1-1

Section 2 : Installation

2.1 General System

Reference Drawings: Pwr/Sig Entrance, 1 Driver Display .............Drawing A-46755

Color Code, 25-Pin J-Box ...........................Drawing A-47207

System Layout, CH-1318V..........................Drawing A-47498

Footing & Beam, CH-1318V........................Drawing A-47512

Display Mounting, CH-1318V......................Drawing A-47517

Electrical Installation, CH-1318V ................Drawing A-47519

Component Locations, CH-1318V ..............Draw ing A-47520

Refer to Drawing A-47498 for the general system layout.

The general procedure for installing the CH-1318V display is as follows:

1. Select beam and footing recommendations from the table located below.

2. Dig the footing holes and install beams and footings.

3. Route power and signal cables to the display and control locations.

4. Mount the displays to the beams as described in Section 2.3 and Drawings A-47512 and
A-47517.

5. Route power and signal wires into the displays as described in Section 2.4 and Drawings
A-47519, A-47520, A-46755 and A-47207.

2.2 Beam and Footing Selection

Reference Drawing: Footing & Beam, CH-1318V..........................Drawing A-47512

The table below contains recommendations for W-shape beams and footings to support the
display as shown on Drawing A-47512. The first column is wind velocity in miles per hour.
The distance in the second column is from the ground to the bottom of the display. The
choice from these columns depends upon the display location.

The beams listed below are beams which provide maximum wind load strength for the weight
and cost of the beams.

Wind

Speed

70 mph 10 W8 x 15 4 ¾ ft x 3 ft

15 W6 x 20 5 ½ ft x 3 ft

80 mph 10 W8 x 15 5 ½ ft x 3 ft

15 W8 x 20 6 ¾ ft x 3 ft

90 mph 10 W8 x 17 6 ¼ ft x 3 ft

15 W8 x 24 7 ft x 3 ft

The calculations for footing diameters and depths are based on the assumption that footings
are in undisturbed soils, not fill soils. Lateral bearing capacity of 300 psf per foot of depth in
natural grade was used to derive these figures.

Height

(ft)

Beam

Section

Footing

Depth x Dia.

Installation 2-1

The footings recommendations are based on the allowable soil bearing pressure of 3000 psf
vertically and 300 psf/ft of depth horizontally. However, these recommendations are
suggestions only and soil bearing pressure at the site must be determined by a sample test
prior to specifying the actual footings. Be sure that the installation complies with local codes
and is suitable for particular soil and wind conditions. Daktronics assumes no responsibility
for displays installed by others. Daktronics
used for beams, and that 28-day (strength 3000 psi) concrete be used for footings.

A note about beam nomenclature: For a typical beam, W8x24 for example, “W” stands for
“Wide-Flange Beam”. The first number (8) is the approximate front to rear dimension of the
beam in inches. The second number (24) is the weight per foot in pounds. This numbering is
a standard in the steel industry. Widths are from 6.00 to 8.125 inches in the chart above.

Note: Recommendations for a single rectangular structural steel tube and footing to support
the display as shown in Drawing A-47512 must be determined by a qualified structural
engineer using data from a soil sample test at the site.

2.3 Display Mounting

Reference Drawings: Footing & Beam, CH-1318V........................Drawing A-47512

Display Mounting, CH-1318V......................Drawing A-47517

Drawings A-47512 and A-47517 show the typical mounting for the display.

Note: The bolts that secure the display to the beam(s) do not go through the beam(s), but run

along both sides of the beam, clamping the display to the beam(s).

A mounting kit consisting of mounting angles and ½” hardware are provided to mount the
display.

1. Position the display against the mounting beam(s) as shown.

2. Secure the bottom of the display to the beam(s).

3. Secure the top of the display and then the middle of the display. Once mounting angles

are attached, the display may be slid up or down to the desired height.

4. Tighten all bolts once the display is positioned as desired.

2.4 Electrical Installation

2.4.1 Control Signal Cable

Reference Drawings: Pwr/Sig Entrance, 1 Driver Display...Drawing A-46755

Color Code, 25-Pin J-Box.................Drawing A-47207

Component Locations, CH-1318V....Drawing A-47520

For the display, two conductors of 24 AWG are needed. For distances up to 600 ft. or
22 AWG, up to 1000 ft. are required. Daktronics has 24 AWG direct burial cable,
Daktronics part no. W-1105 with 6 conductors, and 22 AWG cable that must be
pulled through the conduit before burial, Daktronics part no. W-1077 with 2
conductors.

recommends that W-sections of grade 36 steel be

2-2 Installation