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Daktronics CH-1421V Installation & Maintenance Manual

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Auto Racing Display
Model CH-1421V
Installation & Maintenance Manual
ED 6401
ED-6401
Project#1081
Rev. 2 - 10 August, 1998
Copyright © 1992 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

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Summary of Contents for Daktronics CH-1421V

  • Page 1 Model CH-1421V Installation & Maintenance Manual ED 6401 ED-6401 Project#1081 Rev. 2 - 10 August, 1998 Copyright © 1992 Daktronics, Inc. All rights reserved. While every precaution has been taken in the preparation of this manual, publisher assumes responsibility for errors or omissions. No part...
  • Page 2 P.O. Box 5128 331 32 Ave. Brookings, SD 57006 Phone (605)697-4400 or (800) 843-9879 Fax 697-4444...

  • Page 3: Table Of Contents

    Table of Contents Introduction ......................1-1 How To Use This Manual ..................1-1 Scoreboard Overview ....................1-1 Installation .......................2-1 General System......................2-1 General System......................2-1 Display Mounting.......................2-2 Electrical Installation....................2-3 2.4.1 Control Signal Wiring ...................2-3 2.4.2 Power Wiring ....................2-3 2.4.3 Grounding......................2-3 Maintenance & Troubleshooting................3-1 Lamp Replacement.....................3-1 Lamp Driver .......................3-1 Digit Segmentation.....................3-2 Schematic ........................3-2...

  • Page 5: Introduction

    Scoreboard Overview Reference Drawing: Specifications Drawing; CH-1421V ..... Drawing A-106019 Daktronics offers a wide variety of displays for oval and road tracks. The CH-1421V auto racing display shown in Drawing A-106019 displays lap number or elapsed race time, the top five racers and race status.

  • Page 7: Installation

    Shop Dwg, Mounting Details....... Drawing A-49278 Component Numbering, CH-1421V ..Drawing A-106020 An illustration of the overall system layout for the CH-1421V is shown in Drawing A-38865. A typical installation depicting beams, footings, and wiring conduit is illustrated in Drawing A-49278.

  • Page 8: Display Mounting

    Daktronics assumes no responsibility for displays 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.

  • Page 9: Electrical Installation

    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.
  • Page 10 The steel support structure for the display cannot be used as grounding. The support is generally imbedded in concrete, and if in earth, the steel is either primed or it corrodes making it a poor ground. Use one ground rod at each scoreboard support column.

  • Page 17: Maintenance & Troubleshooting

    Lamp Replacement Reference Drawing: Digit Service ..........Drawing A-27674 The primary service required by the CH-1421V display is to replace burned-out lamps. Refer to Drawing A-27674 for an illustration of lamp changing. Digit lamps are 25W, 120 volt, Daktronics part number DS-1029. Some displays may be equipped with 30W, 120 volt digit lamps, Daktronics part number DS-1126.

  • Page 18: Digit Segmentation

    Drawings A-106020 and A-46755. Troubleshooting This section lists some symptoms that may be encountered with the CH-1421V display. For these symptoms, possible causes and corrective actions are indicated. This list does not include every possible problem, but does represent some of the more common situations that may occur.

  • Page 19: Replacement Parts

    If a component fails, Daktronics will send the customer a replacement. The customer, in turn, sends the failed component to Daktronics. This not only saves money but decreases the time the display is inoperable. Daktronics offers repair and return on a timely basis;...
  • Page 20 This will speed up the transaction and help avoid confusion when the part is returned to Daktronics. The defective item must be returned within 15 days of receiving a replacement part. Using the UPS Blue Return Tag immediately will eliminate the possibility of late charges being assessed against your account.

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