Daktronics CH-1436H User Manual

Auto Racing Display

Model CH-1436H

Installation & Maintenance Manual

ED 7931

.

ED 7931
Project#1081
Rev. 2 - 19 August 1998

Copyright © 1994 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.

.

DA
KTRONICS, 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

2.5 Grounding...................................................................................................................2-3

2.5.1 New Power Installation.................................................................................2-3

2.5.2 Existing Power Installation ...........................................................................2-4

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

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

3.2 Lamp Driver...............................................................................................................3-1

3.3 Digit Segmentation.....................................................................................................3-1

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 maintenance of the Daktronics CH-1436H auto
racing display system. 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.

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-1436H........................................Drawing A-63506

Drawing A-63506 shows a Daktronics CH-1436H display. The CH-1436H display along
with the use of the Daktronics timing console will display the lap number and lap time on the
display.

Introduction

1-1

Section 2 : Installation

2.1 General System

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

Connector Plate, CH-1436H .......................Drawing A-63501

Installation Specifications, CH-1436HH......Drawing A-63502

System Layout, CH-1436H .........................Drawing A-63503

Mounting Instructions, CH-1436H...............Drawing A-63504

Component Locations, CH-1436H..............Drawing A-63922

Power & Signal Entrance, CH-1436H.........Drawing A-63923

Refer to Drawing A-63503 for a general system layout.

The general procedure for installing the CH-1436H display is as follows:

1. Select beam and footing recommendations from the table 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-63502 and
A-63504.

5. Route power and signal wires into the displays as described in Section 2.4 and Drawings
A-47207, A-63501, A-63922 and A-63923.

2.2 Beam and Footing Selection

Reference Drawing: Mounting Instructions, CH-1436H .................Drawing A-63504

The table below contains recommendations for W-shape beams and footings to support the
display as shown in Drawing A-63504. 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 footing 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 actual footings. Be sure that the installation complies with local codes and is
suitable for the particular soil and wind conditions. Daktronics assumes no responsibility for
structures installed by others. Daktronics recommends that W-sections of grade 35 steel be used
for beams, and that 28-day (strength 3000 psi) concrete be used for footings.

A note about beam nomenclature: For a typical beam, W6 x 12 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 (12) is the weight per foot in pounds. This numbering is a
standard in the steel industry. Widths are from 6.00 to 8.00 inches in the chart above.

2.3 Display Mounting

Reference Drawings: Mounting Instructions, CH-1436H ...............Drawing A-63504

Drawing A-63504 shows the typical mounting for the display.

Note: The bolts that secure the display sections do not go through the beams, but run along

both sides of the beam, clamping the display to the beams.

A mounting kit consisting of 12 mounting angles and 1/2" hardware are provided to mount the
display.

1. Position the bottom display against the mounting beams and secure the bottom of the
display to both beams as shown in Drawing A-63504.

2. Next, secure the top of the display. Once mounting angles are attached, the display may
be slid up or down to the desired height.

3. Once positioned as desired, tighten all bolts.

4. Position the top display section on top of the bottom display section and secure to the

beam the same way as the bottom display section was mounted.

2.4 Electrical Installation

2.4.1 Control Signal Cable

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

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.

At the control location, mount the signal J-box to a convenient location. Route the
cables and connect to the wires leading from the connector in the cover according to
the following table and Drawing A-47207.

Component Locations,CH-1436H.....Drawing A-63922

Power&Signal Entrance,CH-1436 ....Drawing A-63923

2-2

Installation