Professional Digital Two-Way Radio System

MOTOTRBO™ Repeater
Basic Service Manual

DR 3000 Repeater

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 M DR 3000
Title Page

UHF Range 1
MOTOTRBO™ Repeater
Basic Service Manual

6866576D03-A

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 Foreword
This manual covers all models of the MOTOTRBO Repeater, unless otherwise specified. It includes all the information
necessary to maintain peak product performance and maximum working time, using levels 1 and 2 maintenance
procedures. This level of service goes down to the board replacement level and is typical of some local service centers,
Motorola Authorized Dealers, self-maintained customers, and distributors.
For details on repeater operation or component-level troubleshooting, refer to the applicable manuals available separately.

Product Safety and RF Exposure Compliance

Before using this product, read the operating instructions
! for safe usage contained in the Product Safety and RF
Caution Exposure booklet enclosed with your product.

ATTENTION!

This repeater is restricted to occupational use only to satisfy ICNIRP/FCC RF energy exposure
requirements. Before using this product, read the RF energy awareness information and operating
instructions in the Product Safety and RF Exposure booklet enclosed with your product (Motorola
Publication part number 6866537D37) to ensure compliance with RF energy exposure limits.

For a list of Motorola-approved antennas, and other accessories, visit the following web site which
lists approved accessories: http://www.motorola.com/governmentandenterprise

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.

Trademarks
MOTOROLA and the Stylized M logo are registered in the U.S. Patent & Trademark Office. All other product or service
names are the property of their respective owners.
© 2007 by Motorola, Inc.
All rights reserved.

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 iii

Document History
The following major changes have been implemented in this manual since the previous edition:

Edition Description Date

6866576D03-A Initial Release Feb. 2007

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 iv

Notes

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 Table of Contents v

Table of Contents

Foreword .........................................................................................................ii
Product Safety and RF Exposure Compliance ............................................................................................ii
Computer Software Copyrights ...................................................................................................................ii
Document Copyrights ..................................................................................................................................ii
Disclaimer....................................................................................................................................................ii
Trademarks .................................................................................................................................................ii

Document History ........................................................................................ iii

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

1.1 Notations Used in This Manual .................................................................................................... 1-1
1.2 Repeater Description ................................................................................................................... 1-1
1.3 MOTOTRBO Repeater Model Numbering Scheme..................................................................... 1-2
1.4 UHF1 High Power MOTOTRBO Repeater (403-470 MHz) Model Chart..................................... 1-3
1.5 Specifications............................................................................................................................... 1-4

Chapter 2 Test Equipment and Service Aids ..................................... 2-1

2.1 Recommended Test Equipment .................................................................................................. 2-1
2.2 Service Aids................................................................................................................................. 2-2
2.3 Programming Cables .................................................................................................................. 2-2

Chapter 3 Transceiver Performance Testing ..................................... 3-1

3.1 General ........................................................................................................................................ 3-1
3.2 Setup ........................................................................................................................................... 3-1

Chapter 4 Repeater Tuning and Programming .................................. 4-1

4.1 Introduction .................................................................................................................................. 4-1
4.2 Customer Programming Software Setup ..................................................................................... 4-1
4.3 Repeater Tuning Setup................................................................................................................ 4-2

Chapter 5 Disassembly/Reassembly Procedures ............................. 5-1

5.1 Introduction .................................................................................................................................. 5-1
5.2 Preventive Maintenance .............................................................................................................. 5-1
5.2.1 Inspection ........................................................................................................................ 5-1
5.2.2 Cleaning Procedures ....................................................................................................... 5-1
5.3 Safe Handling of CMOS and LDMOS Devices ............................................................................ 5-2
5.4 Repair Procedures and Techniques — General .......................................................................... 5-3
5.5 Disassembling and Reassembling the Repeater — General ...................................................... 5-4

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 vi Table of Contents

5.6 Disassembly Procedures — Detailed .......................................................................................... 5-4

5.6.1 Disassembly of Cover...................................................................................................... 5-4
5.6.2 Disassembly of Repeater Indicator Board ....................................................................... 5-5
5.6.3 Disassembly of Fan ......................................................................................................... 5-6
5.6.4 Removing Transmit Radio ............................................................................................... 5-7
5.6.4.1 Removing Thermal Pad and Heatsink .............................................................. 5-8
5.6.5 Removing Receive Radio, Power Supply and Connector Board Assembly .................... 5-8
5.6.5.1 Disassembly of Receive Radio ....................................................................... 5-10
5.6.5.2 Disassembly of Connector Board Assembly................................................... 5-10
5.6.5.3 Disassembly of Power Supply ........................................................................ 5-10
5.7 Transmit and Receive Radio Disassembly — Detailed ............................................................. 5-11
5.7.1 Transceiver Board and Receiver Board Removal ......................................................... 5-11
5.8 Transmit and Receive Radio Reassembly — Detailed .............................................................. 5-14
5.8.1 Transceiver Board and Receiver Board Reassembly.................................................... 5-15
5.8.2 Thermal Pad Replacement Procedure .......................................................................... 5-19
5.8.3 Reassembly of Receive Radio, Power Supply and Connector Board Assembly........... 5-21
5.8.3.1 Reassembly of Power Supply ......................................................................... 5-21
5.8.3.2 Reassembly of Receive Radio........................................................................ 5-21
5.8.3.3 Reassembly of Connector Board Assembly ................................................... 5-21
5.8.3.4 Reassembly of the Receive Bracket Assembly to the Enclosure ................... 5-21
5.8.4 Reassembly of Transmit Radio...................................................................................... 5-22
5.8.4.1 Replacing the Thermal Pad and Heatsink ...................................................... 5-22
5.8.4.2 Reassembly of the Transmit Bracket Assembly to the Enclosure .................. 5-22
5.8.5 Reassembly of Fan........................................................................................................ 5-23
5.8.6 Reassembly of Repeater Indicator Board...................................................................... 5-23
5.8.7 Reassembly of Cover .................................................................................................... 5-23
5.9 Repeater Exploded Mechanical Views and Parts Lists.............................................................. 5-24
5.10 Torque Chart.............................................................................................................................. 5-27

Chapter 6 Basic Troubleshooting ....................................................... 6-1

6.1 Introduction .................................................................................................................................. 6-1
6.1.1 High Power RF Precaution .............................................................................................. 6-1
6.2 Replacement Service Kit Procedures .......................................................................................... 6-1
6.3 LED Indicator Descriptions .......................................................................................................... 6-2

Appendix A EMEA Regional Warranty, Service and Support ..............A-1

A.1 Warranty and Service Support .....................................................................................................A-1
A.2 European Radio Support Centre (ERSC) ....................................................................................A-2
A.3 Piece Parts...................................................................................................................................A-2
A.4 Technical Support ........................................................................................................................A-3
A.5 Further Assistance From Motorola...............................................................................................A-3

Glossary ......................................................................................... Glossary-1

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 viii List of Figures

List of Figures

Figure 1-1. Repeater Model Numbering Scheme................................................................................... 1-2

Figure 2-1. Mobile & Repeater Rear Programming Cable PMKN4010_ ................................................ 2-2
Figure 2-2. Mobile & Repeater Rear Programming, Testing & Alignment Cable PMKN4016_............... 2-3
Figure 4-1. Customer Programming Software Setup from Rear Accessory Connector ......................... 4-1
Figure 4-2. Repeater Tuning Equipment Setup ...................................................................................... 4-2
Figure 5-1. Removing Top Cover of Repeater Enclosure....................................................................... 5-4
Figure 5-2. Disconnecting Ethernet Cable and Flex Cable .................................................................... 5-5
Figure 5-3. Repeater Indicator Board Disassembly................................................................................ 5-6
Figure 5-4. Fan Orientation..................................................................................................................... 5-6
Figure 5-5. Tx Radio Disassembly ......................................................................................................... 5-7
Figure 5-6. Receive Radio Removal....................................................................................................... 5-9
Figure 5-7. Die Cast Cover Removal.................................................................................................... 5-11
Figure 5-8. Accessory Connector Removal .......................................................................................... 5-12
Figure 5-9. RF/DC Retention Clips Removal........................................................................................ 5-12
Figure 5-10. Transceiver Board Removal............................................................................................... 5-13
Figure 5-11. Thermal Pads and Shield Gasketing on Chassis and Die Cast Cover............................... 5-14
Figure 5-12. Transceiver Board with Thermal Pads ............................................................................... 5-14
Figure 5-13. Replacing GPS Plug .......................................................................................................... 5-15
Figure 5-14. Placing the Transceiver Board in the Chassis.................................................................... 5-15
Figure 5-15. Inserting RF/DC Retention Clips ........................................................................................ 5-16
Figure 5-16. Inserting Accessory Connector .......................................................................................... 5-16
Figure 5-17. Assembling of PA Pad and O-ring...................................................................................... 5-17
Figure 5-18. Assembling Die Cast Cover onto Chassis ......................................................................... 5-18
Figure 5-19. Screw Sequence to Tighten Die Cast Cover...................................................................... 5-19
Figure 5-20. Replacing Thermal Pads.................................................................................................... 5-19
Figure 5-21. Aligning Driver Pad on Chassis.......................................................................................... 5-20
Figure 5-22. Placing Thermal Pads on PA and Transistor Components ................................................ 5-20
Figure 5-23. Fan Orientation................................................................................................................... 5-23
Figure 5-24. Repeater Assembly Exploded View ................................................................................... 5-24
Figure 5-25. Receive Bracket and Radio Assembly Exploded View ...................................................... 5-25
Figure 5-26. Transmit Bracket and Radio Assembly Exploded View...................................................... 5-25
Figure 5-27. Front Panel Complete Assembly Exploded View ............................................................... 5-26

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 List of Tables ix

List of Tables

Table 1-1. Frequency Ranges and Power Levels ................................................................................. 1-1

Table 2-1. Recommended Test Equipment ........................................................................................... 2-1
Table 2-2. Service Aids ......................................................................................................................... 2-2
Table 3-1. Initial Equipment Control Settings ........................................................................................ 3-1
Table 3-2. Receiver Performance Checks ............................................................................................ 3-2
Table 4-1. Repeater Software Program Kits ......................................................................................... 4-1
Table 5-1. Lead Free Solder Wire Part Number List ............................................................................. 5-3
Table 5-2. Lead Free Solder Paste Part Number List ........................................................................... 5-3
Table 5-3. Repeater Exploded View Parts List.................................................................................... 5-26
Table 5-4. Torque Specifications for Nuts and Screws........................................................................ 5-27
Table 6-1. LED Indicator Descriptions................................................................................................... 6-2

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 x Related Publications

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 Chapter 1 Introduction

1.1 Notations Used in This Manual

Throughout the text in this publication, you will notice the use of note and caution notations. These
notations are used to emphasize that safety hazards exist, and due care must be taken and
observed.
NOTE: An operational procedure, practice, or condition that is essential to emphasize.

! CAUTION indicates a potentially hazardous situation which, if

not avoided, might result in equipment damage.
Caution

1.2 Repeater Description

The MOTOTRBO Repeater is Motorola’s newest two-way digital and analog repeater designed for
your organization’s most demanding needs. The repeater is available in the following frequency
ranges and power levels.

Table 1-1. Frequency Ranges and Power Levels

Frequency
Bandwidth Power Level
Band

UHF R1 403–470 MHz 25-40 Watts

This repeater is among the most sophisticated two-way repeaters available. It has a new robust
design for users who need high performance, quality, and reliability in their daily communications.
This new architecture provides the capability of supporting a multitude of legacy and advanced
features resulting in a more cost-effective two-way repeater communications solution.

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 1-2 Introduction: MOTOTRBO Repeater Model Numbering Scheme

1.3 MOTOTRBO Repeater Model Numbering Scheme

Model No.Example : AA M 2 7 Q P R 9 J A 7 A N

Position : 1 2 3 4 5 6 7 8 9 10 11 12

Unique Model Variations

AZ: Asia/Australia N: Standard Package
LA: Latin America
AA: North America (except Mexico)
MD: Europe/Middle East/Africa Version Letter
Repeater
Feature Level
1: Mini-U
MOTOTRBO Repeater 2: BNC
Model Series 7: Rack Mount

Band
Q: 403-470MHz

Primary System Type

A: Conventional
Power Level
P: 25-40W
Primary Operation
Physical Packages J: w/o GPS
R: Repeater L: w/ GPS

Channel Spacing
9: Variable/Programmable

Figure 1-1. Repeater Model Numbering Scheme

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 Introduction: UHF1 High Power MOTOTRBO Repeater (403-470 MHz) Model Chart 1-3

1.4 UHF1 High Power MOTOTRBO Repeater (403-470 MHz) Model

Chart

UHF1 403-470 MHz, 25-40W

Model Description
MDM27QPR9JA7AN 403-470 MHz, 25-40W, MOTOTRBO Repeater
Item Description
X PMLN4815_ Connector Board Assembly
X PMLN4814_ Repeater Indicator Board
X PMUE2390_S Repeater Service Kit
X 3002695D05 Power Supply UK
NNTN7373_R Power Supply US
NNTN7374_R Power Supply EU
X 6866537D37 Product Safety and RF Exposure Booklet

X = Item Included
_ = the latest version kit. When ordering a kit, refer to your specific kit for the suffix number.

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 1-4 Introduction: Specifications

1.5 Specifications
General

Specification UHF1

Channel Capacity 1
Technical RF Output 25-40W

Frequency 403-470 MHz

Dimensions (HxWxL) 132.6 mm x 482.6 mm x 296.5 mm

Weight 14 kg

Voltage Requirements 100-240 V AC 47-63 Hz (13.6 V DC)

Current Drain: Standby 0.5 A (1 A DC typical)

Transmit 1.5 A (11 A DC typical)

Operating Temperature Range -30°C to +60°C

Max Duty Cycle 100%

Receiver

Specification UHF1

Frequency 403-470 MHz

Channel Spacing 12.5 kHz/25 kHz

Frequency Stability (-30°C to +60°C) ±0.5 ppm

Analog Sensitivity 0.30 µV (12 dB SINAD)

0.22 µV (typical) (12 dB SINAD)
0.40 µV (20 dB SINAD)

Digital Sensitivity 5% BER: 0.3 µV

Intermodulation 70 dB

Adjacent Channel Selectivity: 60 dB @ 12.5 kHz, 70 dB @ 25 kHz

Spurious Rejection 70 dB

Audio Distortion @ Rated Audio 3% (typical)

Hum and Noise -40 dB @ 12.5 kHz

-45 dB @ 25 kHz

Audio Response +1, -3 dB

Conducted Spurious Emission -57 dBm

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 Introduction: Specifications 1-5

Transmitter

Specification UHF1

Frequency 403-470 MHz

Channel Spacing 12.5 kHz/25 kHz

Frequency Stability (-30°C to +60°C) ±0.5 ppm

Power Output 25-40 W

Modulation Limiting ±2.5 kHz @ 12.5 kHz

±5.0 kHz @ 25 kHz

FM Hum and Noise -40 dB @ 12.5 kHz

-45 dB @ 25 kHz

Conducted/Radiated Emission -36 dBm < 1 GHz

-30 dBm > 1 GHz

Adjacent Channel Power 60 dB @ 12.5 kHz

70 dB @ 25 kHz

Audio Response +1, -3 dB

Audio Distortion 3%
Digital Vocoder Type AMBE++

Digital Protocol ETSI-TS102 361-1

Conforms to:
ETSI TS 102 361 (Parts 1, 2 & 3) - ETSI DMR Standard
1999/5/EC (R&TTE - Radio and Telecommunications Terminal Equipment)
2002/95/EC (RohS - Banned Substances)
2002/96/EC (WEEE - Waste Electrical and Electronic Equipment)
94/62/EC (Packaging and Packaging Waste)
Radio meets applicable regulatory requirements.

Specifications subject to change without notice. All specfications shown are typical.

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 1-6 Introduction: Specifications

Notes

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 Chapter 2 Test Equipment and Service Aids

2.1 Recommended Test Equipment

The list of equipment contained in Table 2-1 includes most of the standard test equipment required
for servicing Motorola repeaters.

Table 2-1. Recommended Test Equipment

Equipment Characteristic Example Application

Service Monitor Can be used as a Aeroflex 2975 Frequency/deviation meter and

substitute for items (www.aeroflex.com), Motorola signal generator for wide-range
marked with an asterisk R2670, or equivalent troubleshooting and alignment
(*)

Digital RMS 100 µV to 300 V Fluke 179 or equivalent AC/DC voltage and current
Multimeter* 5 Hz to 1 MHz (www.fluke.com) measurements. Audio voltage
10 Meg Ohm Impedance measurements

RF Signal 100 MHz to 1 GHz Agilent N5181A Receiver measurements

Generator* -130 dBm to +10 dBM (www.agilent.com), Ramsey
FM Modulation 0 kHz to RSG1000B
10 kHz (www.ramseyelectronics.com),
or equivalent

Oscilloscope* 2 Channel Leader LS8050 Waveform measurements

50 MHz Bandwidth (www.leaderusa.com), Tektronix
5 mV/div to 20 V/div TDS1001b
(www.tektronix.com), or
equivalent

Power Meter and 5% Accuracy Bird 43 Thruline Watt Meter Transmitter power output
Sensor* 100 MHz to 500 MHz (www.bird-electronic.com) or measurements
50 Watts equivalent

RF Millivolt Meter 100 mV to 3 V RF Boonton 92EA RF level measurements

10 kHz to 1 GHz (www.boonton.com) or
equivalent

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 2-2 Test Equipment and Service Aids: Service Aids

2.2 Service Aids

Table 2-2 lists the service aids recommended for working on the repeater. While all of these items
are available from Motorola, most are standard workshop equipment items, and any equivalent item
capable of the same performance may be substituted for the item listed.

Table 2-2. Service Aids

Motorola
Description Application
Part Number

RLN4460_ Test Set Enables connection to audio/accessory jack. Allows

switching for radio testing.

GMVN5141_ Customer Programming Soft- Allows servicer to program repeater parameters, tune
ware on CD-ROM and troubleshoot repeaters.

PMKN4016_ Mobile & Repeater Rear Connects the radio’s rear connector to a USB port for
Programming, Testing & radio programming, data applications, testing and
Alignment Cable alignment.

PMKN4010_ Mobile & Repeater Rear Connects the radio’s rear connector to a USB port for
Programming Cable radio programming and data applications.

2.3 Programming Cables

Figure 2-1. Mobile & Repeater Rear Programming Cable PMKN4010_

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 Test Equipment and Service Aids: Programming Cables 2-3

DB 25 CONNECTOR USB CONNECTOR

1 13
4
14 25

1455 24
CABLE
915 15 TABLE 2: WIRE DIAGRAM
CABLE
26 PIN
ACCESSORY PORT USB DB25P
CONNECTOR
PIN No. DESCRIPTION
3 VCC (5v) 1

2 DATA - 2
TO MOBILE RADIO
ACCESSORY 1 DATA + 3
CONNECTOR
4 GND

9 SPEAKER - 7

11 EXT MIC 17

25 1 DIGI IN 1
17 20
VIEWED FROM (EXT PTT)
FRONT (PIN END)
OF CONNECTOR 16 GND 16
26 2

10 SPEAKER + 1

Figure 2-2. Mobile & Repeater Rear Programming, Testing & Alignment Cable PMKN4016_

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 2-4 Test Equipment and Service Aids: Programming Cables

Notes

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 Chapter 3 Transceiver Performance Testing

3.1 General
The MOTOTRBO Repeater meets published specifications through their manufacturing process by
utilizing high-accuracy laboratory-quality test equipment. The recommended field service equipment
approaches the accuracy of the manufacturing equipment with few exceptions. This accuracy must
be maintained in compliance with the manufacturer’s recommended calibration schedule.
NOTE: Although these radios function in digital and analog modes, all testing is done in analog mode.

3.2 Setup
Supply voltage is 120/240 VAC. The equipment required for alignment procedures is connected as
shown in the Repeater Tuning Equipment Setup Diagram, Figure 4-2.

Initial equipment control settings should be as indicated in Table 3-1. Table 3-2 lists Receiver
Performance Checks information.

Table 3-1. Initial Equipment Control Settings

Service Monitor Test Set

Monitor Mode: Power Monitor Speaker set: A

RF Attenuation: -70 Speaker/load:

Speaker

AM, CW, FM: FM PTT: OFF

Oscilloscope Source: Mod

Oscilloscope Horizontal: 10 mSec/Div
Oscilloscope Vertical: 2.5 kHz/Div
Oscilloscope Trigger: Auto
Monitor Image: Hi
Monitor Bandwidth: Narrow
Monitor Squelch: middle setting
Monitor Vol: 1/4 setting

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 3-2 Transceiver Performance Testing: Setup

Table 3-2. Receiver Performance Checks

Communications
Test Name Radio Test Set Comment
Analyzer

Rated Audio Mode: GEN Use tuner tool PTT to OFF Set volume to
Output level: 1.0 mV RF to program (center), 7.75 Vrms via
4th channel test repeater to an meter tuner tool.
frequency* appropriate selector to
Mod: 1kHz tone at test frequency Audio PA
3 kHz deviation with carrier
Monitor: DVM: AC Volts squelch.

Distortion As above, except to As above As above Distortion <5.0%

distortion
Sensitivity As above, except SINAD, As above PTT to OFF RF input to be
(SINAD) lower the RF level for (center) <0.3 µV
12 dB SINAD.

RF level set to 1mV RF As above PTT to OFF Set volume to

(center), 7.75 Vrms via
Noise meter tuner tool.
Squelch selection to
Threshold Audio PA,
(only radios speaker/ load
with to speaker
conventional
system need As above, except change out of TEST As above Unsquelch to
to be tested) frequency to a MODE; select occur at <0.25 µV.
conventional system. a conventional Preferred SINAD
Raise RF level from zero system = 9 - 10 dB
until radio unsquelches.

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 Chapter 4 Repeater Tuning and Programming

4.1 Introduction
This chapter provides an overview of the MOTOTRBO Customer Programming Software (CPS), as
well as the Tuner application, which are all designed for use on Windows 2000/XP operating system.
These programs are available in one kit as listed in the Table 4-1. An Installation Guide is also
included with the kit.
NOTE: Refer to the appropriate program on-line help files for the programming procedures.

Table 4-1. Repeater Software Program Kits

Description Kit Number

MOTOTRBO CPS, Tuner and AirTracer Applications CD GMVN5141_

4.2 Customer Programming Software Setup

The Customer Programming Software setup, shown in Figure 4-1 is used to program the repeater.

NOTE: Refer to the appropriate program on-line help files for the programming procedures.

Repeater Rear Accessory Mobile & Repeater Rear

Connector Programming Cable PMKN4010_
ACC

AC 120 / 240 VAC

Tx Port

Rx Port

USB

Figure 4-1. Customer Programming Software Setup from Rear Accessory Connector

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 4-2 Repeater Tuning and Programming: Repeater Tuning Setup

4.3 Repeater Tuning Setup

A personal computer (PC), Windows 2000/XP and a tuner program (which is available as part of the
MOTOTRBO CPS kit) are required to tune the repeater. To perform the tuning procedures, the
repeater must be connected to the PC and test equipment setup as shown in Figure 4-2.

Audio In Tx Audio Generator

Test Box
RLN4460_
Rx SINAD Meter

AC Voltmeter

Mobile & Repeater Rear Programming,

Testing & Alignment Cable PMKN4016_

ACC
USB
AC 120 / 240 VAC

Tx Port 30 dB Pad
Tx Service Monitor
Rx Port

Tx
WATT meter

RF Generator

Figure 4-2. Repeater Tuning Equipment Setup

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 Chapter 5 Disassembly/Reassembly Procedures

5.1 Introduction
This chapter provides details about the following:
• Preventive maintenance (inspection and cleaning).
• Safe handling of CMOS and LDMOS devices.
• Disassembly and reassembly of the repeater.
• Disassembly and reassembly of the Transmit and Receive radios.
• Repair procedures and techniques.

5.2 Preventive Maintenance

Periodic visual inspection and cleaning is recommended.

5.2.1 Inspection
Check that the external surfaces of the repeater are clean, and that all external controls and switches
are functional. It is not recommended to inspect the interior electronic circuitry.

5.2.2 Cleaning Procedures

The following procedures describe the recommended cleaning agents and the methods to be used
when cleaning the external and internal surfaces of the repeater. External surfaces include the top
cover and repeater enclosure.

Periodically clean smudges and grime from exterior enclosure. Use a soft, non-abrasive cloth
moistened in a mild soap and water solution. Rinse the surface using a second cloth moistened in
clean water, and clean any dirt or debris from the fan grill and louvers on the front side.

NOTE: Internal surfaces should be cleaned only when the repeater is disassembled for service or
repair.

The only recommended agent for cleaning the external repeater surfaces is a 0.5% solution of a
mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed
circuit boards and their components is isopropyl alcohol (70% by volume).

Cleaning Internal Circuit Boards and Components

Isopropyl alcohol (70%) may be applied with a stiff, non-metallic, short-bristled brush to dislodge
embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the
dislodged material out and away from the inside of the repeater. Make sure that controls or tunable
components are not soaked with alcohol. Do not use high-pressure air to hasten the drying process
since this could cause the liquid to collect in unwanted places. Once the cleaning process is
complete, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl
alcohol to the top cover and repeater enclosure.
NOTE: Always use a fresh supply of alcohol and a clean container to prevent contamination by
dissolved material (from previous usage).

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 5-2 Disassembly/Reassembly Procedures: Safe Handling of CMOS and LDMOS Devices

5.3 Safe Handling of CMOS and LDMOS Devices

Complementary metal-oxide semiconductor (CMOS) devices are used in this family of repeaters,
and are susceptible to damage by electrostatic or high voltage charges. Damage can be latent,
resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to
prevent device damage during disassembly, troubleshooting, and repair.
Handling precautions are mandatory for CMOS circuits and are especially important in low humidity
conditions.
DO NOT attempt to disassemble the repeater without first referring to the following CAUTION
statement.

This repeater contains static-sensitive devices. Do not open the repeater unless you

! are properly grounded. Take the following precautions when working on this unit:

Caution • Store and transport all CMOS devices in conductive material so that
all exposed leads are shorted together. Do not insert CMOS devices
into conventional plastic “snow” trays used for storage and
transportation of other semiconductor devices.
• Ground the working surface of the service bench to protect the
CMOS device. We recommend using the Motorola Static Protection
Assembly (part number 0180386A82), which includes a wrist strap,
two ground cords, a table mat, and a floor mat.
• Wear a conductive wrist strap in series with a 100k resistor to
ground. (Replacement wrist straps that connect to the bench top
covering are Motorola part number 4280385A59).
• Do not wear nylon clothing while handling CMOS devices.
• Do not insert or remove CMOS devices with power applied. Check
all power supplies used for testing CMOS devices to be certain that
there are no voltage transients present.
• When straightening CMOS pins, provide ground straps for the
apparatus used.
• When soldering, use a grounded soldering iron.
• If at all possible, handle CMOS devices by the package and not by
the leads. Prior to touching the unit, touch an electrical ground to
remove any static charge that you may have accumulated. The
package and substrate may be electrically common. If so, the
reaction of a discharge to the case would cause the same damage
as touching the leads.

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 Disassembly/Reassembly Procedures: Repair Procedures and Techniques — General 5-3

5.4 Repair Procedures and Techniques — General

NOTE Environmentally Preferred Products (EPP) (refer to the marking on the printed circuit
boards — examples shown below) were developed and assembled using environmen-
tally preferred components and solder assembly techniques to comply with the Euro-
pean Union’s Restriction of Hazardous Substances (ROHS) Directive 2002/95/EC
and Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC. To
maintain product compliance and reliability, use only the Motorola specified parts in this
manual.

Any rework or repair on Environmentally Preferred Products must be done using the appropriate
lead-free solder wire and lead-free solder paste as stated in the following table:

Table 5-1. Lead Free Solder Wire Part Number List

Motorola Flux Content Melting Supplier Part

Alloy Flux Type Diameter Weight
Part Number by Weight Point number

1088929Y01 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52171 0.015” 1lb spool

1088929Y02 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52170 0.010” 0.5lb spool

1088929Y03 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52173 0.032” 1lb spool

Table 5-2. Lead Free Solder Paste Part Number List

Motorola Part Manufacturer Part Liquid

Viscosity Type Composition & Percent Metal
Number Number Temperature

1085674C03 NC-SMQ230 900-1000KCPs Type 3 (95.5%Sn-3.8%Ag-0.7%Cu) 217°C

Brookfield (5rpm) (-325/+500) 89.3%

Parts Replacement and Substitution

When damaged parts are replaced, identical parts should be used. If the identical replacement part
is not locally available, check the parts list for the proper Motorola part number and order the part
from the nearest Motorola Radio Products and Solutions Organization listed in Appendix A of this
manual.
Rigid Circuit Boards
This repeater uses bonded, multi-layer, printed circuit boards. Since the inner layers are not
accessible, some special considerations are required when soldering and unsoldering components.
The printed-through holes may interconnect multiple layers of the printed circuit. Therefore, exercise
care to avoid pulling the plated circuit out of the hole.
When soldering near connector:
• Avoid accidentally getting solder in the connector.
• Be careful not to form solder bridges between the connector pins.
• Examine your work closely for shorts due to solder bridges.

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 5-4 Disassembly/Reassembly Procedures: Disassembling and Reassembling the Repeater — General

5.5 Disassembling and Reassembling the Repeater — General

The following tools are required for disassembling the repeater:
• Small Flat Blade Screwdriver
• TORX™ T30 Driver Bit
• TORX™ T25 Driver Bit
• TORX™ T20 Driver Bit
• TORX™ T15 Driver Bit
• TORX™ T10 Driver Bit
• 7 mm Magnetic Socket Driver (extension of >150 mm)
• 16 mm Deep Well Socket Driver
• 19 mm Deep Well Socket Driver
If a unit requires more complete testing or service than is customarily performed at the basic level,
please send repeater to a Motorola Service Center listed in Appendix A.
The following disassembly procedures should be performed only if necessary.

5.6 Disassembly Procedures — Detailed

The following are typical procedures to remove and replace the Transmit radio, Receive radio,
Repeater Indicator Board, connector board assembly and other miscellaneous parts.
1. Power cord and all external cables must be disconnected before opening up repeater.
2. Take the proper grounding precautions as stated in Section 5.3: Safe Handling of CMOS and
LDMOS Devices on page 5-2.
3. When disassembling repeater, retain all screws for reuse.

5.6.1 Disassembly of Cover

1. Remove the five screws that retain the cover to the housing as shown in Figure 5-1 using a
T20 TORX™ driver.

Screws

Back View of Repeater

Top Cover

Front View of Repeater

Figure 5-1. Removing Top Cover of Repeater Enclosure

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 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed 5-5

5.6.2 Disassembly of Repeater Indicator Board

(Refer to Figure 5-2 and Figure 5-3)
1. Disconnect the blue ethernet cable from the ethernet connector on the Repeater Indicator
Board.
2. Disconnect flex cable from 30-position connector on Repeater Indicator Board, noting
orientation of cable which is identified with a solid black line. This is important for reassembly.

Ethernet
Connector

Repeater, LED
and USB
Converter Board

Control Head Flex

Figure 5-2. Disconnecting Ethernet Cable and Flex Cable

3. Detach the front panel by removing the four M6 screws located on the front face of panel
using a T30 TORX™ driver.
4. Place the front panel on a flat surface with the Repeater Indicator Board facing up.
5. Detach the Repeater Indicator Board from front panel by removing the four M3 screws using
a T10 TORX™ driver.
6. Hold the Repeater Indicator Board on its outer edge with your finger tips, squeeze together
the catch of each clip and slightly press them through the board to remove the light guide.

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 5-6 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed

7. Store Repeater Indicator Board in an anti-static bag when it is not being serviced.

Front Panel
M6 Screws (4)

Repeater Indicator Board

Light Guide

M3 Screws (4)

Figure 5-3. Repeater Indicator Board Disassembly

5.6.3 Disassembly of Fan

1. Unplug the fan cable from the mating connector on the connector board assembly.
2. Detach the fan assembly by removing the four screws that secure the fan grill and fan
assembly to the back of the enclosure using a T15 TORX™ driver.
3. Carefully remove fan, noting position of arrow which identifies direction of air flow. This is
important for reassembly.
Screws

Position of arrow
Fan
Back of Enclosure

Figure 5-4. Fan Orientation

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 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed 5-7

5.6.4 Removing Transmit Radio

(Refer to Figure 5-5)
1. Disconnect flex cable from 30-position connector on Transmit radio, noting orientation of
cable which is identified with a solid blue line. This is important for reassembly.
2. Disconnect SSI flex cable from the connector on the Transmit radio, noting orientation of
cable which is identified with a solid black line. This is important for reassembly.
3. Loosen and remove the four M4 lock nuts that secure the Transmit radio assembly with a
7 mm socket driver.
4. Disconnect the power cable from the Transmit radio.
5. Disconnect the antenna cable from the Transmit radio.
6. Disconnect the accessory connector from the Transmit radio.
7. Lift the Transmit radio assembly out of the enclosure and place on a flat surface.
8. Loosen and remove the two M5 screws and washers that secure the Transmit radio to the
bracket using a T25 TORX™ driver.

M3 Screws (7)

Heatsink

Thermal Pad

Transmit Radio

M5 Screw (1)

M5 Screw (1)

Washer
Transmit Bracket

Figure 5-5. Tx Radio Disassembly

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 5-8 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed

5.6.4.1 Removing Thermal Pad and Heatsink

(Refer to Figure 5-5)
1. Remove all of the seven screws which secure the heatsink to the Transmit radio using a T10
TORX™ driver.
2. Remove the heatsink from the Transmit radio.
3. Peel off and discard the thermal pad.
4. Replace all worn parts.

5.6.5 Removing Receive Radio, Power Supply and Connector Board Assembly
(Refer to Figure 5-6)
1. Disconnect SSI flex cable from the connector on the Receive radio, noting orientation of cable
which is identified with a dotted line. This is important for reassembly.
2. Disconnect the antenna cable from the Receive radio.
3. Disconnect the power cable from the Receive radio.
4. Remove the two screws securing the retainer clip using a T20 TORX™ driver.
5. Remove accessory connector from the back side of repeater by inserting a flat blade
screwdriver into the slot located on the top of the connector.
6. Disconnect all of the cables from their mating connectors located on the connector board
assembly.
7. Loosen and remove the five M4 lock nuts that secure the Receive radio assembly with a
7 mm socket driver.
NOTE: The two lock nuts at the side on base will require a magnetic lock nut driver with extension of
greater than 150 mm).
8. Slide Receive radio assembly slightly forward before lifting it out of the enclosure.

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 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed 5-9

9. Take precaution not to damage the power supply or the connector board assembly and place
assembly on a flat surface.

Receive Bracket

Connector Board Receive Radio

Assembly

M5 Screws

M3 Screws (5)

Power Supply

Washer

Figure 5-6. Receive Radio Removal

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 5-10 Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed

5.6.5.1 Disassembly of Receive Radio

(after Receive radio assembly is removed from repeater)
1. With assembly on a flat surface, loosen and remove the two M5 screws and washers that
secure the Receive radio to the bracket using a T25 TORX™ driver.
2. Slide the Receive radio out of the bracket.

5.6.5.2 Disassembly of Connector Board Assembly

(after Receive radio assembly is removed from repeater)
1. With assembly on a flat surface, detach the connector board assembly from Receive radio
assembly by removing the five M3 screws using a T10 TORX™ driver.
2. Store connector board assembly in anti-static bag when it is not being serviced.

5.6.5.3 Disassembly of Power Supply

(after Receive radio assembly is removed from repeater)
1. With assembly on a flat surface, loosen and remove the four M5 screws and washers that
secure the power supply to the bracket using a T25 TORX™ driver.
2. Slide power supply out from bracket.
3. Disconnect Y-split cable from power supply before sending to manufacturer.
NOTE: Power Supply should be serviced by manufacturer.

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Disassembly — Detailed 5-11

5.7 Transmit and Receive Radio Disassembly — Detailed

To remove Transmit and Receive radios from the repeater, refer to Sections 5.6.4 and 5.6.5
accordingly.

5.7.1 Transceiver Board and Receiver Board Removal

1. Remove the seven screws from the die cast cover using the T20 TORX™ driver as shown in
Figure 5-7.
NOTE: Do not remove the O-rings from the screws.
2. Lift the die cast cover from the chassis.

Screws (7)
Die Cast
Cover

Radio
Chassis

Figure 5-7. Die Cast Cover Removal.

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 5-12 Disassembly/Reassembly Procedures: Transmit and Receive Radio Disassembly — Detailed

3. Remove the accessory connector from the radio assembly by inserting a flat-blade
screwdriver into the slot on the side of the connector as shown in Figure 5-8.

! The accessory connector should never be removed when the cover is still
assembled to the radio.
Caution

Flat-blade
Screwdriver
Accessory Slot
Connector

Figure 5-8. Accessory Connector Removal

4. Remove the RF/DC retention clips by gently prying them out with a flat-blade screwdriver as
shown in Figure 5-9.

RF/DC Retention Clips

Flat-blade
Screwdriver

Flat-blade
Screwdriver

Figure 5-9. RF/DC Retention Clips Removal

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Disassembly — Detailed 5-13

5. Remove the transceiver board by sliding a finger into the opening provided at the front of the
radio and gently press up on the 30-pin connector, lifting up the front of the board, as shown
in Figure 5-10. Then, slide the transceiver board towards the front of the radio to allow the
RF/DC connectors to clear the chassis. Handle the transceiver board by the edges only and
store it in an antistatic bag.
NOTE: If the RF/DC connector gaskets remain in the chassis, remove them and place them back on
the connectors.

!
The thermal pads can act as an adhesive and cause stress to critical
components on the transceiver board if the transceiver board is lifted too
Caution quickly.

Figure 5-10. Transceiver Board Removal

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 5-14 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed

5.8 Transmit and Receive Radio Reassembly — Detailed

The following reassembly procedures are applicable to both the Transmit and Receive radios.
1. Prior to reassembling the radio, inspect all seals and sealing surfaces for damage (nicks,
cuts, etc.) or debris. Refer to the exploded view and bill of materials for the correct part
numbers and replace parts, as necessary. Reseat all new seals on their respective parts.

For both the die cast cover and the chassis, thoroughly inspect the shield gasketing for
damage and verify all thermal pads are in place and free from damage and debris. See
Section 5.8.2: Thermal Pad Replacement Procedure on page 5-19 to replace damaged pads.

Chassis with Thermal Pads Die Cast Cover with Thermal Pads
and Shield Gasketing and Shield Gasketing

Figure 5-11. Thermal Pads and Shield Gasketing on Chassis and Die Cast Cover

2. Thoroughly inspect the transceiver board and verify all thermal pads are in place and free
from damage. See Section 5.8.2: Thermal Pad Replacement Procedure on page 5-19 to
replace damaged pads.

Transistor PA Thermal Pad (7515581H01)

Thermal Pads
(7515582H01)
Audio PA Component

Figure 5-12. Transceiver Board with Thermal Pads

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-15

3. Assembly of the GPS Plug

Push the GPS plug into the chassis opening until it is fully seated. Refer to Figure 5-13.
GPS Plug

GPS Plug

Figure 5-13. Replacing GPS Plug

5.8.1 Transceiver Board and Receiver Board Reassembly

1. Insert the transceiver board into the chassis by tilting the transceiver board (approximately 30
degrees) and sliding it into place, taking care to line up the RF and DC connectors with the
openings in the back of the chassis.

Ensure that the transceiver board alignment holes are positioned over the chassis alignment
bosses and then push the board down to fully seat.
Locating Bosses

Figure 5-14. Placing the Transceiver Board in the Chassis

!
Do not leave the transceiver board in the chassis for extended periods of time
without the RF/DC retention clips, or damage to the board connectors may
Caution occur.

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 5-16 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed

2. Insert the RF/DC retention clips and fully seat them. The DC clip should be inserted first to
properly locate the transceiver board. Refer to Figure 5-15.

RF/DC
Retention Clips

Figure 5-15. Inserting RF/DC Retention Clips

3. Insert the accessory connector into the radio assembly and press into place until the
connector is flushed with the chassis. Refer to Figure 5-16.

Accessory
Connector

Figure 5-16. Inserting Accessory Connector

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-17

4. Place the PA pad on to the die cast cover by aligning the two holes in the PA pad with the
alignment pins on the die cast cover.
5. Fit the O-ring onto the die cast cover securely. Refer to Figure 5-17.

O-ring

PA Pad

Die Cast Cover

Figure 5-17. Assembling of PA Pad and O-ring

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 5-18 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed

6. Place the die cast cover onto the chassis orienting the die cast cover so that screw holes 6
and 7 align with the bosses on the chassis as shown in Figure 5-18.

Screws (7)

Die Cast Cover

Radio Chassis

Figure 5-18. Assembling Die Cast Cover onto Chassis

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-19

7. Using a T20 TORX™ driver, tighten the seven screws between 2.94 N-m (26 lbs-in) in the
order shown in Figure 5-19.
8. Repeat tightening the seven screws in the order shown otherwise the first three screws will
likely be loose.

Figure 5-19. Screw Sequence to Tighten Die Cast Cover

5.8.2 Thermal Pad Replacement Procedure

A. Chassis Thermal Pad Replacement Procedure
Harmonic Filter Thermal Pad Replacement
1. Use a plastic flat-edge tool to lift the pad from the chassis surface. Discard the old pad.
2. Use a soft cloth to remove any remaining residue. Alcohol can also be used, if necessary.
Care should be taken to minimize any cleaning-agent contact with the surrounding shield
gasket.
3. Once the surface is clean and dry, remove the new pad from the shipping liner, and place it
white side down on the chassis as shown in Figure 5-20.

Harmonic Filter
Pad (7515579H01)
Harmonic Filter
Pad (7515580H01)

Radio Chassis

Figure 5-20. Replacing Thermal Pads

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 5-20 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed

Driver Thermal pad Replacement

1. Use a plastic flat-edge tool to lift the pad from the chassis surface. Discard the old pad.
2. Use a soft cloth to remove any remaining residue. Alcohol can also be used, if necessary.
Care should be taken to minimize any cleaning-agent contact with the surrounding shield
gasket.
3. Once the surface is clean and dry, remove the new pad from the shipping liner, and place the
pad on to the chassis, aligning the edges of the pad with the edges of the chassis, as shown
in Figure 5-21.

Driver Pad
(7515357H01)

Radio Chassis

Figure 5-21. Aligning Driver Pad on Chassis

4. Apply even pressure to the pad and remove the protective liner.
B. Transceiver Board Thermal Pad Replacement Procedure
Transistor Thermal Pads and PA Thermal Pad Replacement
1. Use a plastic flat-edge tool to lift each pad from the transceiver board. Discard the old pads.
2. Use a soft cloth to remove any remaining residue. Alcohol can also be used, if necessary.
3. Once the surface is clean and dry, remove each new pad from the shipping liner, and place in
the proper location on top of each transistor component and the audio PA with the white side
down (see Figure 5-22).
PA Thermal Pad (7515581H01)
Transistor
Thermal Pads
(7515582H01)
Audio PA Component

Figure 5-22. Placing Thermal Pads on PA and Transistor Components

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-21

5.8.3 Reassembly of Receive Radio, Power Supply and Connector Board Assembly
(Refer to Figure 5-6)
Visually inspect repeater enclosure to ensure that no metal shavings or debris are found.

5.8.3.1 Reassembly of Power Supply

1. Align the two mounting holes on each side of the bracket with the mounting holes on the
power supply.
2. Secure the power supply and the bracket with four M5 screws and washers.
3. Tighten the four M5 screws to 3.0 N-m.
4. Firmly connect the single connection end of Y-split cable to power cable of power supply.

5.8.3.2 Reassembly of Receive Radio

1. Insert the Receive radio into the top half of the bracket.
2. Align mounting hole on each side of the receive chassis to the mounting holes on the bracket.
3. Secure the Receive radio and the bracket with two M5 screws and washers.
4. Tighten the two M5 screws to 3.0 N-m.

5.8.3.3 Reassembly of Connector Board Assembly

1. Align the five mounting holes on the connector board assembly onto the five standoffs on the
receive bracket and install five M3 screws.
2. Tighten the five M3 screws to 1.0 N-m.

5.8.3.4 Reassembly of the Receive Bracket Assembly to the Enclosure

1. Align and mount the receive bracket assembly onto the five stud screws in the enclosure.
2. Ensure that the dimple locator (bump) on the enclosure is nested within the hole on the
receive bracket before installing and tightening the lock nuts.
3. Tighten the five lock nuts to 2.0 N-m.
NOTE: The two lock nuts at the side on base will require a magnetic lock nut driver with extension of
greater than 150 mm).
4. Connect the antenna cable to the Receive radio.
5. Insert the BNC connector of the antenna cable through the back panel of the enclosure and
secure it using a lock washer and nut.
6. Tighten the nut to 0.7 N-m using a 16 mm deep well socket driver.
7. Firmly connect one of the connectors from the dual end of Y-split cable to the Receive radio.
NOTE: All cables (except the antenna cable), are routed at the bottom rear receive bracket.
8. Insert the accessory connector through the opening of the enclosure onto the edge of the
connector board assembly.
9. Make sure that the accessory connector is completely inserted onto the connector board
assembly and the back end surface of the accessory connector is flushed firmly against the
back panel of enclosure.
10. Mount the retainer clip and secure it with two M4 screws.
11. Tighten the screws to 2.0 N-m.

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 5-22 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed

12. Insert the solder terminal end of the SSI cable into the 11-position connector at the front face
of Receive radio. A dashed black line is visible from the top view.

5.8.4 Reassembly of Transmit Radio

(Refer to Figure 5-5)

5.8.4.1 Replacing the Thermal Pad and Heatsink

1. Make sure that mating surfaces of Heatsink and Transmit radio are cleaned and free from any
debris.
2. Align the holes on the thermal pad to the screw holes in the Transmit radio and place thermal
pad onto the Transmit radio.
3. Align the holes on the heatsink to the screw holes in the Transmit radio and place heatsink
onto the thermal pad.
4. Secure but do not tighten the seven screws previously removed.
5. When all seven screws are secured, tighten the screws to 1.0 N-m. Refer to Figure 5-19.

5.8.4.2 Reassembly of the Transmit Bracket Assembly to the Enclosure

1. Position the Transmit radio onto the transmit bracket so that the label “FRONT” on bracket is
facing the front face of radio.
2. Align the mounting holes on the Transmit radio and the transmit bracket on both sides.
3. Attach and secure the M5 screws and washers on each side of the bracket.
4. Tighten the screws to 3.0 N-m, making sure the Transmit radio remains horizontal.
5. Align and mount the transmit bracket assembly onto the four stud screws in the enclosure.
6. Ensure that dimple locator (bump) on the enclosure is nested within the hole on the transmit
bracket before installing and tightening the lock nuts.
7. Secure the four lock nuts (two on each side) onto the stud screws.
8. Tighten the four lock nuts to 2.0 N-m.
9. Connect the antenna cable to the Transmit radio.
10. Insert the N-Type connector of the antenna cable through the back panel of the enclosure
and secure it using a lock washer and nut.
11. Tighten the nut to 0.7 N-m using a 19 mm deep well socket driver.
12. Firmly connect one of the connectors from the dual end of Y-split cable to the Transmit radio.
13. Connect the black colored end of accessory cable connector to rear of Transmit radio making
sure that the locking connector tab is facing up.
14. Connect the white colored end of the accessory cable connector to the connector board
assembly making sure that the locking connector tab is facing toward the front of repeater.
NOTE: Make sure that the accessory connectors at both ends are locked in place. A clicking sound
can be heard from the locking tab.
15. Insert the solder terminal end of the SSI flex cable (positioned bottom side of PCB) into the
11-position connector in the Transmit radio. A solid black line is visible from the top view.
16. Insert the solder terminal end of the flex cable (positioned top side of PCB) into the 30-
position connector in the Transmit radio. A solid blue line is visible from the top view.

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 Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-23

5.8.5 Reassembly of Fan

1. Position the fan in the enclosure with arrow pointing outward and the wires on the fan at the
bottom right corner of the fan.

Screws

Position of arrow
Fan
Back of Enclosure

Figure 5-23. Fan Orientation

2. Position the fan grill outside of the enclosure aligning with the screw holes.
3. Install four 3.5 mm screws through the fan grill, the rear panel of the enclosure and onto the
fan clip.
4. Secure the fan and tighten the four screws to 1.2 N-m through each of the fan clip.
5. Plug the fan cable plug into the 4-position fan connector on the connector board assembly.
NOTE: It is recommended that you dress and tie wrap the blue ethernet cable and the fan cables.

5.8.6 Reassembly of Repeater Indicator Board

Refer to Figure 5-3.
1. Holding Repeater Indicator Board on outer edge, insert the clips of light guide into mounting
holes, making sure the light guide snaps into place.
2. Align the four mounting holes on the Repeater Indicator Board onto the four standoffs on the
front panel.
3. Install and secure the four M3 screws.
4. Tighten the four M3 screws to 1.0 N-m.
5. Use the four M6 screws to secure the front panel onto the enclosure. Tighten the screws to
3.7 N-m.
6. Connect the blue ethernet cable onto the ethernet connector on the Repeater Indicator
Board.
7. Insert the flex cable onto the 30-position connector on the Repeater Indicator Board. The
solder terminal end of the flex cable is faced towards the front panel. A solid black line is
visible from the top view.

5.8.7 Reassembly of Cover

1. Place the cover on the enclosure.
2. Secure the two M4 screws on each side of the cover and one at the top. Tighten the screws
to 2.0 N-m.

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 5-24 Disassembly/Reassembly Procedures: Repeater Exploded Mechanical Views and Parts Lists

5.9 Repeater Exploded Mechanical Views and Parts Lists

Transmit Bracket &

Radio Assembly
See following pages 32
for breakdown.
7

13
12
4 15
10 11
17
5
9 14
16

1 33

Receive Bracket &

Radio assembly
See following pages
6 for breakdown.

3
16 Front Panel
2 complete assembly
See following pages
for breakdown.

Figure 5-24. Repeater Assembly Exploded View

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 Disassembly/Reassembly Procedures: Repeater Exploded Mechanical Views and Parts Lists 5-25

23
20 31

18

19

22
21

Figure 5-25. Receive Bracket and Radio Assembly Exploded View

26
27
25

24

28

19

31

Figure 5-26. Transmit Bracket and Radio Assembly Exploded View

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 5-26 Disassembly/Reassembly Procedures: Repeater Exploded Mechanical Views and Parts Lists

29

22

30

Figure 5-27. Front Panel Complete Assembly Exploded View

Table 5-3. Repeater Exploded View Parts List

Item No. Description Part Number
1 Screw, TT6x1.0x10, Starpan, EM6219 (black) 0312016A54
2 Repeater Indicator Board PMLN4814_
3 Cable, Flex SSI 3015639H01
4 Cable, Flex 30-Position 3015634H01
5 Fan Assembly 5915618H01
6 Enclosure Assembly 1515837H01
7 Top Cover 1515655H01
8 Cable, RF Tx, W/N-Type 3015573H01
9 Cable, RF Rx, W/BNC 3015574H01
10 Fan Grill 1383852R01
11 Screw, TT3.5x0.6x16, Star SLT Pan 0310909E50
12 M6 Ground Nut 0285854Y01
13 M6 Ground Screw 0310909A95
14 Accessory Retainer Clip 4216361H01
15 Accessory Connector 0178042A01
16 Screw, M4x0.7x13.0, Starpan STLZNC 0310909E63

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 Disassembly/Reassembly Procedures: Torque Chart 5-27

Table 5-3. Repeater Exploded View Parts List

Item No. Description Part Number

17 Lock Nut M4 0285854Y02
18 Power Supply PMPN4001_
19 Screw, M5x0.8x8.0, Starpan STLZNC 0310909A74
20 Receive Radio Brick Assembly PMTE4004_
21 Connector Board Assembly PMLN4815_
22 Screw, M3x0.5x5, Starpan STLZNC 0310909A30
23 RX Bracket Assembly 0715656H01
24 Transmit Radio Brick Assembly PMTE4004_
25 Thermal Pad 7515633H01
26 Heatsink 2615620H01
27 Screw, M3x0.5x10, Starpan STLZNC 0310909A33
28 Tx Bracket 0715654H01
29 Front Panel Assembly only (handles not included) 6415658H04
30 Light Guide 6116326H01
31 Washer 0400002647
32 Cable Assembly, Tx to Connector Board 3015570H01
33 Cable, Power, Y-Split 3085859M01

5.10 Torque Chart

Table 5-4 lists the various nuts and screws by part number and description, followed by the torque
values in different units of measure. Torque all screws to the recommended value when assembling
the repeater.

Table 5-4. Torque Specifications for Nuts and Screws

Part Torque
Description Driver/ Socket
Number N-m lbs-in kg-cm
0285854Y01 Grounding Nut, M6 10 mm dip socket 2.0 17.70 20.4
0285854Y02 Lock Nut, M4 x 0.8, ext tooth 7 mm socket 2.0 17.70 20.4
0310909A30 Screw, M3.0 x 0.5 x 5 mm T10 Torx™ 1.0 8.9 10.2
0310909A33 Screw, M3 x 0.5 x 10 mm T10 Torx™ 1.0 8.9 10.2
0310909A74 Screw, M5 x 0.8 x 8 mm T25 Torx™ 3.0 26.6 30.6
0310909E50 Screws, M3.5 x 0.5 x 16 mm T15 Torx™ 1.2 10.6 12.2
0310909A95 Grounding Screw, M6 x 1 x 25 T30 Torx™ 2.0 17.7 20.4
0312016A54 Screws, TT6 x 1.0 x 10 mm T30 Torx™ 3.7 32.7 37.7
Star Thread Rolling Screw
0310909E63 Screw, M4 x 0.7 x 7 mm, T20 Torx™ 2.0 17.7 20.4
Slotted Star
3015574H01 BNC Type connector 16 mm deep well socket 0.7 6.2 7.1
3015573H01 N Type connector 19 mm deep well socket 0.7 6.2 7.1

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 5-28 Disassembly/Reassembly Procedures: Torque Chart

Notes

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 Chapter 6 Basic Troubleshooting

6.1 Introduction
This chapter contains error codes and board replacement procedures. If the repeater does not pass
all the performance checks in Chapter 3, then please send the repeater to a Motorola Service Center
listed in Appendix A.
NOTE: To access the various connector pins, use the housing eliminator/test fixture along with the
diagrams found in this section of the manual. (See Section, "Service Aids" on page 2-2, for
the appropriate Motorola service aids and tools part numbers.)

6.1.1 High Power RF Precaution

The repeater might transmit while the technician believes the radio is in

! receive mode under the following conditions: radio failure, digital affiliation,
a defective PTT button, or other unintentional activations.
Caution
To avoid possible equipment damage, when performing both transmit and
receive tests, a suitable attenuator rated at 100 W or more should always be
used with test equipment connected to the RF connector. The only
exception to this is when the equipment’s input power rating is higher than
the maximum output power of the repeater.

6.2 Replacement Service Kit Procedures

Once a problem has been isolated to a specific board, install the appropriate service kit (see Model
Chart in Section 1.4 on page 1-3), which is orderable from Motorola Radio Products and Solutions
Organization, see Appendix A. Refer to http://emeaonline.motorola.com for further information.
• If a board is replaced, it does not necessarily need to be retuned if it has been factory tuned. It
should however be checked for performance before being placed into service. Of particular
concern is the Bias DAC, which will need to be set for the appropriate final device bias current
prior to keying up the radio. If the bias is not properly set it may be possible to cause damage to
the transmitter.

! The Tuner Tool only allows the serial number of a blank board to be entered
once. Be very attentive during this procedure.
Caution

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 6-2 Basic Troubleshooting: LED Indicator Descriptions

6.3 LED Indicator Descriptions

Table 6-1. LED Indicator Descriptions

LED Status Description

Power Solid GREEN Repeater powered by AC

Solid RED Repeater powered by back-up battery

Off Repeater powered off

Repeater Solid RED Repeater function disabled

Disable
Blinking RED Repeater in self test mode

Off Repeater in normal operational mode

Digital Solid BLUE Repeater in Digital mode

Analog Solid YELLOW Repeater in Analog mode

TX-A Solid GREEN Repeater transmitting (Analog)

Solid GREEN Repeater transmitting on Slot A (Digital)

RX-A Solid YELLOW Repeater receiving (Analog)

Solid YELLOW Repeater receiving on Slot A (Digital)

TX-B Solid GREEN Repeater transmitting on Slot B (Digital)

RX-B Solid YELLOW Repeater receiving on Slot B (Digital)

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 Appendix A EMEA Regional Warranty, Service and
Technical Support

1.0 Warranty and Service Support

Motorola offers long term support for its products. This support includes full exchange and/or repair
of the product during the warranty period, and service/ repair or spare parts support out of warranty.
Any "return for exchange" or "return for repair" by an authorized Motorola Dealer must be
accompanied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an
Authorized Motorola Dealer.

1.1 Warranty Period and Return Instructions

The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or
Reseller contract. These conditions may change from time to time and the following notes are for
guidance purposes only.

In instances where the product is covered under a "return for replacement" or "return for repair"
warranty, a check of the product should be performed prior to shipping the unit back to Motorola.
This is to ensure that the product has been correctly programmed or has not been subjected to
damage outside the terms of the warranty.

Prior to shipping any radio back to the appropriate Motorola warranty depot, please contact
Customer Resources (Please see page A-3). All returns must be accompanied by a Warranty Claim
Form, available from your Customer Services representative. Products should be shipped back in
the original packaging, or correctly packaged to ensure no damage occurs in transit.

1.2 After Warranty Period

After the Warranty period, Motorola continues to support its products in two ways.

1. Motorola's Managed Technical Services (MTS) offers a repair service to both end users and
dealers at competitive prices.
2. MTS supplies individual parts and modules that can be purchased by dealers who are techni-
cally capable of performing fault analysis and repair.

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 A-2 EMEA Regional Warranty, Service and Technical Support:

2.0 European Radio Support Centre (ERSC)

The ERSC Customer Information Desk is available through the following service numbers:

Austria: 08 00 29 75 41 Italy: 80 08 77 387

Belgium: 08 00 72 471 Luxemburg: 08 00 23 27

Denmark: 80 88 05 72 Netherlands: 08 00 22 45 13

Finland: 08 00 11 49 910 Norway: 80 01 11 15

France: 08 00 90 30 90 Portugal: 08 00 84 95 70

Germany: 08 00 18 75 240 Spain: 90 09 84 902

Greece: 00 80 04 91 29 020 Sweden: 02 07 94 307

UK : 08 00 96 90 95 Switzerland: 08 00 55 30 82

Ireland: 18 00 55 50 21 Iceland: 80 08 147

Or dial the European Repair and Service Centre:

Tel: +49 30 6686 1555

Please use these numbers for repair enquiries only.

3.0 Piece Parts

Some replacement parts, spare parts, and/or product information can be ordered directly.
If a complete Motorola part number is assigned to the part, it is available from Motorola Radio
Products and Solutions Organization (RPSO). If no part number is assigned, the part is not normally
available from Motorola. If the part number is appended with an asterisk, the part is serviceable by
Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable
parts are available for that kit or assembly.

Orders for replacement parts, kits and assemblies should be placed directly on Motorola's local
distribution/dealer organisation or via Motorola Online at: http://emeaonline.motorola.com
* The Radio Products and Solutions Organization (RPSO) was formerly known as the Radio
Products Services Division (RPSD) and/or the Accessories and Aftermarket Division (AAD).

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 EMEA Regional Warranty, Service and Technical Support: A-3

4.0 Technical Support

Motorola Product Services is available to assist the dealer/distributors in resolving any malfunctions
which may be encountered.
North Europe - Stephen Woodrow Central and East Europe - Siggy Punzenberger
Telephone: +44 (0) 1256 488 082 Telephone: +49 (0) 6128 70 2342
Fax: +44 01256 488 080 Fax: +49 (0) 6128 95 1096
Email: CSW066@motorola.com Email: TFG003@email.mot.comm

Russia and Belarus - Sergey An Germany - Customer Connect Team

Telephone: +7 495 785 0150 Telephone: +49 (0) 30 6686 1539
Fax: +7 495 785 0185 Fax: +49 (0) 30 6686 1916
Email: CSA002@email.mot.com Email: cgiss.emea@europe.mot.com

Middle East and Africa - Wayne Holmes Italy - Ugo Gentile

Telephone: +27 11 800 7922 Telephone: +39 0 2822 0325
Fax: +27 11 800 7923 Fax: +39 0 2822 0334
Email: radiosupport.za@motorola.com Email: C13864@email.mot.com

France - Armand Roy France - Laurent Irrmann

Telephone: +33 1 6935 7868 Telephone: +33 1 6935 7866
Fax: +33 1 6935 7808 Fax: +33 1 6935 7808
Email: armand.roy@motola.com Email: laurent.irrmann@motola.com

5.0 Further Assistance From Motorola

You can also contact the Customer Help Desk through the following web address.
http://www.motorola.com/governmentandenterprise/contactus

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 A-4 EMEA Regional Warranty, Service and Technical Support:

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 Glossary Glossary

This glossary contains an alphabetical listing of terms and their definitions that are applicable to
portable and mobile subscriber radio products. All terms do not necessarily apply to all radios, and
some terms are merely generic in nature.

Term Definition

Analog Refers to a continuously variable signal or a circuit or device designed to

handle such signals.

Band Frequencies allowed for a specific purpose.

CPS Customer Programming Software: Software with a graphical user interface

containing the feature set of a radio.

Default A pre-defined set of parameters.

Digital Refers to data that is stored or transmitted as a sequence of discrete symbols

from a finite set; most commonly this means binary data represented using
electronic or electromagnetic signals.

DPL Digital Private-Line: A type of digital communications that utilizes privacy call,
as well as memory channel and busy channel lock out to enhance
communication efficiency.

FCC Federal Communications Commission.

Frequency Number of times a complete electromagnetic-wave cycle occurs in a fixed unit

of time (usually one second).

GPIO General-Purpose Input/Output.

IC Integrated Circuit: An assembly of interconnected components on a small

semiconductor chip, usually made of silicon. One chip can contain millions of
microscopic components and perform many functions.

IF Intermediate Frequency.

kHz kilohertz: One thousand cycles per second. Used especially as a radio-
frequency unit.

LCD Liquid-Crystal Display: An LCD uses two sheets of polarizing material with a
liquid-crystal solution between them. An electric current passed through the
liquid causes the crystals to align so that light cannot pass through them.
LED Light Emitting Diode: An electronic device that lights up when electricity is
passed through it.

MDC Motorola Digital Communications.

MHz Megahertz: One million cycles per second. Used especially as a radio-
frequency unit.
Paging One-way communication that alerts the receiver to retrieve a message.

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 Glossary-2

Term Definition

PC Board Printed Circuit Board. Also referred to as a PCB.

PL Private-Line Tone Squelch: A continuous sub-audible tone that is transmitted

along with the carrier.

Programming Cable A cable that allows the CPS to communicate directly with the radio using
RS232.
Receiver Electronic device that amplifies RF signals. A receiver separates the audio
signal from the RF carrier, amplifies it, and converts it back to the original
sound waves.

Repeater Remote transmit/receive facility that re-transmits received signals in order to

improve communications range and coverage (conventional operation).

RF Radio Frequency: The portion of the electromagnetic spectrum between audio

sound and infrared light (approximately 10 kHz to 10 GHz).

RX Receive.

Signal An electrically transmitted electromagnetic wave.

Spectrum Frequency range within which radiation has specific characteristics.

Squelch Muting of audio circuits when received signal levels fall below a pre-determined
value. With carrier squelch, all channel activity that exceeds the radio’s preset
squelch level can be heard.

TOT Time-out Timer: A timer that limits the length of a transmission.

TPL Tone Private Line

Transceiver Transmitter-receiver. A device that both transmits and receives analog or digital
signals. Also abbreviated as XCVR.

Transmitter Electronic equipment that generates and amplifies an RF carrier signal,

modulates the signal, and then radiates it into space.

TX Transmit.

UHF Ultra-High Frequency.

USB Universal Serial Bus: An external bus standard that supports data transfer rates
of 12 Mbps.

VIP Vehicle Interface Port.

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 MOTOROLA and the Stylized M Logo are
registered in the U.S. Patent and Trademark Office.
All other product or service names are the property
of their respective owners.

© 2007 Motorola, Inc.

All rights reserved. March 2007.

www.motorola.com/mototrbo

@6866576D03@
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