Daktronics CH-1624V User Manual

Auto Racing Display

Model CH-1624V

Installation & Service Manual

ED 5942

ED-5942
Project# 1081
Rev. 4 - 28 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.

DA
KTRONICS, INC.

Setting New Standards Worldwide

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

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Installation

Installation

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..................................................................................................2-3

2.4.1 Control Signal Cable.....................................................................................2-3

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 maintenance of the CH-1624V Auto Racing
Display. 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-1624V......................................Drawing A-46744

Drawing A-46744 shows a Daktronics CH-1624V display. The CH-1624V along with the
use of the Daktronics CHTS-300 timing console will display the 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

Component Locations, CH-1624V ..............Drawing A-46756

System Layout, CH-1624V..........................Drawing A-46757

Display Mounting, CH-1624V......................Drawing A-46774

Footing & Beam, CH-1624V........................Drawing A-46784

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

Electrical Installation, CH-1624V ................Drawing A-47270

Refer to Drawing A-46757 for a general system layout.

The general procedure for installing the CH-1624V display is as follows:

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

2. Dig the footing holes and install beams and footings. Refer to the table in Section 2.2 for

the correct beam and footing selections.

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

4. Mount the displays to the beams as described in Drawings A-46774 and A-46784 and in
Section 2.3.

5. Route power and signal wires into the displays as described in Drawings A-46755, A­46756, A-47207 and A-47270 and in Section 2.4.

2.2 Beam and Footing Selection

Reference Drawing: Footing & Beam, CH-1624V..........................Drawing A-46784

The table below contains recommendations for W-shape beams and footings to support the
display as shown in Drawing A-46784. 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
choices from these columns depend 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 Height (ft) Beam

Section

70 10 W 10x19 7 ½ ftx3 ft

MPH 15 W 10x25 8 ¼ ftx3 ft

80 10 W 10x25 8 ½ ftx3 ft

MPH 15 W 10x29 9 ¼ ftx3 ft

90 10 W 14x26 9 ½ ftx3 ft

MPH 15 W 12x31 10 ½ ftx3 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.

Installation

Footing Depth x

Diameter

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 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
structures installed by others. Daktronics recommends that W-sections of grade 36 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, W8x28 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 (28) is the weight per foot in pounds. This numbering is
a standard in the steel industry. Widths are from 10.125 to 13.87 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-46784 must be determined by a qualified structural
engineer using data from a soil sample test at the site.

2.3 Display Mounting

Reference Drawing: Display Mounting, CH-1624V.......................Drawing A-46774

Footing and Beam, CH-1624V .....................Drawing A-46784

Drawings A-46774 and A-46784 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 1/2" hardware are provided to mount the
display.

1. Position the display against the mounting beam(s) and secure the bottom of the display to

the beam(s) as shown.

2. 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. Once the display is
positioned as desired, tighten all bolts.

2-2

Installation