Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual

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properly installed (according to installation instructions) externally-mounted antenna to satisfy 
the RF exposure requirements in the standards listed above.
NOTE: Table 1 below lists the recommended lateral distance for bystanders in an uncontrolled 
environment from the body of a vehicle with an approved, properly installed transmitting 
antenna (i.e., monopoles overa a ground plane, or dipoles) at several different ranges of 
rated radio power for mobile radios installed in a vehicle.
NOTE:If you are not sure of the rated power of your radio, contact your Motorola representative or 
dealer and supply the radio model number found on the radio model label. If you cannot 
determine the rated power out, then assure 3-feet separation from the body of the vehicle.
Mobile Antenna Installation Guidelines
 These mobile antenna installation guidelines are limited to metal body motor vehicles or vehicles 
with appropriate ground planes.
 Antennas should be installed in the center area of the roof or the trunk lid taking into account the 
bystander exposure conditions of backseat passengers and according to the specific instructions 
and restrictions in the Radio Installation Manual along with the requirements of the antenna sup-
plier.
 Trunk lid installations are limited to vehicles with clearly defined flat trunk lide, and in some 
cases, to specific radio models and antennas. See the Radio Installation Manual for specific 
information on how and where to install specific types of approved antennas to facilitate recom-
mended operating distances to all potentially exposed persons.
Use only the Motorola-approved, supplied antenna or a Motorola-approved replacement 
antenna. Unauthorized antennas, modifications, or attachments could damage the radio and 
may result in non-compliance with RF Safety Standards.
Approved Accessories
 This radio has been tested and meets RF Safety Standards when used with the Motorola acces-
sories supplied or designated for this product. Use of other accessories may result in non-compli-
ance with RF Safety Standards.
 For a list of Motorola-approved antennas, visit the following Web site, which lists approved 
accessories for your radio model: http://ap.cgiss.motorola.com/AAD/index.html
Additional Information
For additional information on exposure requirements or other training information, 
visit http://www.motorola.com/rfhealth.
Table 1: Rated Power of Vehicle-Installed Mobile Two-Way Radio and
Recommended Minimum Lateral Distance from Vehicle Body
Mobile Radio Rated 
Power (see Note)Minimum Lateral Distance 
from Vehicle Body
Less than 7 watts 8 inches (20 centimeters)
7 to 15 watts 1 foot (30 centimeters)
16 to 39 watts 2 feet (60 centimeters)
40 to 110 watts 3 feet (90 centimeters) 
						

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Compliance and Control Guidelines and Operating Instructions for 
Mobile Two-Way Radios Installed as Fixed Site Stations
If mobile radio equipment is installed at a fixed location and operated as a control station or as a 
fixed unit, the antenna installation must comply with the following requirements in order to ensure 
optimal performance and compliance with the RF energy exposure limits in the standards and 
guidelines listed on page ii:
 The antenna should be mounted outside the building on the roof or a tower if at all possible.
 As with all fixed site antenna installations, it is the responsibility of the licensee to manage the 
site in accordance with applicable regulatory requirements and may require additional compli-
ance actions such as site survey measurements, signage, and site access restrictions in order to 
ensure that exposure limits are not exceeded.
Electromagnetic Interference/Compatibility
NOTE:Nearly every electronic device is susceptible to electromagnetic interference (EMI) if 
inadequately shielded, designed, or otherwise configured for electromagnetic compatibility. It 
may be necessary to conduct compatibility testing to determine if any electronic equipment 
used in or around vehicles or near fixed site antenna is sensitive to external RF energy or if 
any procedures need to be followed to eliminate or mitigate the potential for interaction 
between the radio transmitter and the equipment or device. 
Facilities
To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any 
facility where posted notices instruct you to do so. Hospitals or health care facilities may be 
using equipment that is sensitive to external RF energy.
Vehicles
To avoid possible interaction between the radio transmitter and any vehicle electronic control 
modules, such as ABS, engine, or transmission controls, the radio should be installed only by an 
experienced installer and the following precautions should be used when installing the radio:
1.Refer to the manufacturer’s instructions or other technical bulletins for recommendations on 
radio installation.
2.Before installing the radio, determine the location of the electronic control modules and their 
harnesses in the vehicle.
3.Route all radio wiring, including the antenna transmission line, as far away as possible from 
the electronic control units and associated wiring.
Driver Safety
Check the laws and regulations on the use of radios in the area where you drive. Always obey them.
When using your radio while driving, please:
 Give full attention to driving and to the road.
 Pull off the road and park before making or answering a call if driving conditions so require. 
						

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Operational Warnings
For Vehicles With An Air Bag
Do not mount or place a mobile radio in the area over an air bag or in the air bag deployment 
area. Air bags inflate with great force. If a radio is placed in the air bag deployment area and 
the air bag inflates, the radio may be propelled with great force and cause serious injury to 
occupants of the vehicle.
Potentially Explosive Atmospheres
Turn off your radio prior to entering any area with a potentially explosive atmosphere. 
Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in 
bodily injury or even death.
The areas with potentially explosive atmospheres include fueling areas such as below decks 
on boats, fuel or chemical transfer or storage facilities, and areas where the air contains 
chemicals or particles such as grain, dust or metal powders. Areas with potentially 
explosive atmospheres are often, but not always, posted.
Blasting Caps And Blasting Areas
To avoid possible interference with blasting operations, turn off your radio when you are 
near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” 
Obey all signs and instructions.
For radios installed in vehicles fueled by liquefied petroleum gas, refer to the (U.S.) National 
Fire Protection Association standard, NFPA 58, for storage, handling, and/or container 
information. For a copy of the LP-gas standard, NFPA 58, contact the National Fire 
Protection Association, One Battery Park, Quincy, MA. 
						

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							vii
Table of Contents
SAFETY INFORMATION ......................................................................................... i
Section 1 Introduction
1.0 Scope of Manual .................................................................................................. 1-1
2.0 Warranty and Service Support ............................................................................. 1-1
2.1 Warranty Period and Return Instructions ....................................................... 1-1
2.2 After Warranty Period ..................................................................................... 1-1
2.3 Piece Parts Availability ................................................................................... 1-2
2.4 Technical Support........................................................................................... 1-2
2.5 Further Assistance From Motorola ................................................................. 1-2
3.0 Radio Model Information ...................................................................................... 1-3
Section 2 Maintenance
1.0 Introduction .......................................................................................................... 2-1
2.0 Preventive Maintenance ...................................................................................... 2-1
2.1 Inspection ....................................................................................................... 2-1
2.2 Cleaning ......................................................................................................... 2-1
3.0 Safe Handling of CMOS and LDMOS .................................................................. 2-2
4.0 General Repair Procedures and Techniques....................................................... 2-2
5.0 Notes For All Schematics and Circuit Boards ...................................................... 2-5
Section 3 Service Aids
1.0 Recommended Test Tools ................................................................................... 3-1
2.0 Test Equipment .................................................................................................... 3-2 
						

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							1-1
Section 1
INTRODUCTION
1.0 Scope of Manual
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.
2.0 Warranty and Service Support
Motorola offers support which 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” to an authorized Motorola Dealer must be accompanied by a Warranty Claim 
Form. Warranty Claim Forms are obtained by contacting an Authorized Motorola Dealer. 
2.1 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 subsections 
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. All returns must be accompanied by a Warranty Claim Form, available from 
your Customer Resources representative. Products should be shipped back in the original 
packaging, or correctly packaged to ensure that no damage occurs in transit. 
2.2 After Warranty Period
After the Warranty period, Motorola continues to support its products in two ways: 
1.Motorolas Accessories and Aftermarket Division (AAD) offers a repair service to both end 
users and dealers at competitive prices. 
2.AAD supplies individual parts and modules that can be purchased by dealers who are techni-
cally capable of performing fault analysis and repair.
NOTEBefore operating or testing these units, please read the Safety Information section in the
front of this manual. 
						

							1-2Warranty and Service Support
2.3 Piece Parts Availability
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’s Accessories 
and Aftermarket Division (AAD). 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.
All orders for parts/information should include the complete Motorola identification number. All part 
orders should be directed to your local AAD office. Please refer to your latest price pages.
2.4 Technical Support
Technical support is available to assist the dealer/distributor in resolving any malfunction which may 
be encountered. Initial contact should be by telephone wherever possible. When contacting 
Motorola Technical Support, be prepared to provide the product model number and the unit’s 
serial number.
2.5 Further Assistance From Motorola
You can also call the CGISS Indirect Business Customer Help Desk number, (604)-6302525 or 
send an email to [email protected]. 
						

							1-3Radio Model Information
3.0 Radio Model Information
The model number and serial number are located on a label attached to the back of your radio. You 
can determine the RF output power, frequency band, protocols, and physical packages. The 
example below shows one mobile radio model number and its specific characteristics.
Table 1-1   Radio Model Number (Example: AZM25KHF9AA5)
Type of 
UnitModel 
SeriesFreq. 
BandPower 
LevelPhysical 
PackagesChannel 
SpacingProtocolFeature 
Level
AZM25K
VHF
(136-
174MHz)H
1-25WC
GM3289
Program-
mableAA
Conventional1
GM328
R
UHF1
(403-
470MHz)K
25-60WF
GM3385
GM338
S
UHF2
(450-
527MHz)N
GM3988
GM398
B
LB, R1
(29.7-
36MHz)
C
LB, R2
(36-
40MHz)
D
LB, R3
(42-
50MHz)
 AZ = Country Code
M = Mobile 
						

							1-4Radio Model Information
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