Motorola Vhf 136 174 Mhz Uhf 435 480 Mhz 6881096c38 Manual

							Business Portable Radio
Service Manual
 VHF 136-174 MHz
UHF 435-480 MHz
Motorola, Inc.
1301 E. Algonquin Road
Schaumburg, IL 60196
6881096C38-B 
						

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							Technical Information Updates
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Manual No.: 6881096C38
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							Foreword
This manual is intended for use by service technicians familiar with similar types of equipment. It contains 
service information required for the equipment described and is current as of the printing date. Changes which 
occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions.
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored 
in semiconductor memories or other media. Laws in the United States and other countries preserve for  
Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to, the  
exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any  
copyrighted Motorola computer programs contained in the Motorola products described in this manual may  
not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express  
written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant  
either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent  
applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in  
the sale of a product.
Document Copyrights
No duplication or distribution of this document or any portion thereof shall take place without the express  
written permission of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any  
form or by any means, electronic or mechanical, for any purpose without the express written permission of  
Motorola.
Disclaimer
The information in this document is carefully examined, and is believed to be entirely reliable. However, no  
responsibility is assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any  
products herein to improve readability, function, or design. Motorola does not assume any liability arising out 
of the applications or use of any product or circuit described herein; nor does it cover any license under its  
patent rights nor the rights of others.
MOTOROLA and The Stylized M logo are trademarks of Motorola, Inc.
All other product or service names are the property of their respective owners.
© 2006 Motorola, Inc. All rights reserved. Printed in U.S.A. Note:
Before operating or testing these units, please read the Product Safety and RF Exposure
Compliance section. 
						

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DOCUMENT HISTORY
The following major changes have been implemented in this manual since the previous edition:
EditionDescriptionDate
6881096C38-B Chapter 2: Maintenance
Updated parts listApr. 2006
Chapter 4: CPS Programming
Changed part number HVN4196_ to RVN4196_
Chapter 6: Accessories
Updated desciption of HLN9844_, PMNN4063_R.
Added 6881098C60 CP125 Radio UG (Eng/
French)
Chapter 7: VHF (136-174 MHz) Band Info.
Updated model chart and specifications
Chapter 8: UHF (435-480 MHz) Band Info.
Updated model chart and specifications 
						

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							Table of Contents
Foreword......................................................................................................................................... 0-i
Computer Software Copyrights....................................................................................................... 0-i
Document Copyrights ..................................................................................................................... 0-i
Disclaimer ....................................................................................................................................... 0-i
User Safety, Training, and General Information ........................................vii
Chapter 1 Introduction ......................................................................... 1-1
1.1 Scope of Manual ............................................................................................................................ 1-1
1.2 Warranty ........................................................................................................................................ 1-1
1.2.1 Warranty Period and Return Instructions .......................................................................... 1-1
1.2.2 After Warranty Period ....................................................................................................... 1-1
1.3 Replacement Parts Ordering ......................................................................................................... 1-1
1.3.1 Basic Ordering Information ............................................................................................... 1-1
1.3.2 Motorola Online ................................................................................................................ 1-2
1.3.3 Mail Orders ....................................................................................................................... 1-2
1.3.4 Telephone Orders ............................................................................................................. 1-2
1.3.5 Fax Orders ........................................................................................................................ 1-2
1.3.6 Parts Identification ............................................................................................................ 1-2
1.3.7 Product Customer Service ................................................................................................ 1-3
1.4 Technical Support .......................................................................................................................... 1-3
1.5 Radio Model Information................................................................................................................ 1-4
1.6 Radio Features .............................................................................................................................. 1-5
Chapter 2 Maintenance ........................................................................ 2-1
2.1 Introduction .................................................................................................................................... 2-1
2.2 Preventive Maintenance ................................................................................................................ 2-1
2.2.1 Inspection ......................................................................................................................... 2-1
2.2.2 Cleaning Procedures ........................................................................................................2-1
2.3 Safe Handling of CMOS and LDMOS Devices .............................................................................. 2-2
2.4 Repair Procedures and Techniques — General ............................................................................ 2-3
2.4.1 Parts Replacement and Substitution ................................................................................ 2-3
2.4.2 Rigid Circuit Boards .......................................................................................................... 2-3
2.4.3 Flexible Circuits ................................................................................................................ 2-3
2.4.4 Chip Components ............................................................................................................. 2-3
2.4.5 Shields .............................................................................................................................. 2-4
2.5 Disassembling and Reassembling the Radio — General .............................................................. 2-4
2.6 Radio Disassembly — Detailed ..................................................................................................... 2-5
2.6.1 Front Cover from Chassis Disassembly ........................................................................... 2-5
2.6.2 Control Board Disassembly .............................................................................................. 2-7
2.6.3 RF Board Disassembly ..................................................................................................... 2-7
2.7 Radio Reassembly — Detailed ...................................................................................................... 2-9
2.7.1 RF Board Reassembly...................................................................................................... 2-9
2.7.2 Control Board Reassembly ............................................................................................... 2-9
2.7.3 Chassis and Front Cover Reassembly ............................................................................. 2-9
2.8 Mechanical View and Parts List ................................................................................................... 2-12 
						

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March, 20066881096C38
2.8.1 Exploded View and Parts List ......................................................................................... 2-12
2.9 Service Aids ................................................................................................................................. 2-14
2.10 Test Equipment ............................................................................................................................ 2-15
2.11 Programming Cable (DSK001C706)............................................................................................ 2-16
2.12 IF Test Box (DSK001C702) ......................................................................................................... 2-17
Chapter 3 Radio Tuning ....................................................................... 3-1
3.1 Introduction .................................................................................................................................... 3-1
3.2 Software Tuning Setup .................................................................................................................. 3-1
3.3 Affixing Antenna Ground Plate....................................................................................................... 3-2
3.4 Hardware Tuning Setup and Procedure ........................................................................................ 3-3
3.4.1 Audio Modulation Tuning .................................................................................................. 3-3
3.4.2 Sub-Audio Modulation Tuning........................................................................................... 3-4
3.4.3 Tuning Frequency ............................................................................................................. 3-4
Chapter 4 Radio Programming............................................................ 4-1
4.1 Introduction .................................................................................................................................... 4-1
4.2 Programming Your Radio .............................................................................................................. 4-1
4.2.1 Overview of the Programming Process ............................................................................ 4-1
4.3 CPS Programming ......................................................................................................................... 4-1
4.4 Programming ................................................................................................................................. 4-2
4.4.1 PL Frequencies and Codes .............................................................................................. 4-2
4.4.2 DPL Codes........................................................................................................................ 4-3
4.4.3 Examples .......................................................................................................................... 4-3
Chapter 5 Error Code Displays............................................................ 5-1
5.1 Error Codes.................................................................................................................................... 5-1
Chapter 6 Accessories ......................................................................... 6-1
6.1 Antennas ........................................................................................................................................ 6-1
6.2 Carrying Accessories ..................................................................................................................... 6-1
6.3 Chargers ........................................................................................................................................ 6-1
6.4 Batteries ......................................................................................................................................... 6-1
6.5 Audio Accessories ......................................................................................................................... 6-1
6.6 Manuals ......................................................................................................................................... 6-2
6.7 Software ......................................................................................................................................... 6-2
Chapter 7 VHF (136-174 MHz) Band Information ............................... 7-1
7.1 Model Chart ................................................................................................................................... 7-1
7.2 Specifications ................................................................................................................................. 7-3
7.3 Theory of Operation ....................................................................................................................... 7-4
7.3.1 General Information .......................................................................................................... 7-4
7.3.2 Power Distribution ............................................................................................................. 7-4
7.3.3 Power up Sequence..........................................................................................................7-4