Motorola Gm Series Detailed 6864115b62 B Manual

							Professional Radio
GM Series
Detailed Service Manual
6864115B62-B 
						

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							WLS EMEA Publications Department, Jays Close, Viables Industrial Estate, Basingstoke, Hampshire, RG22 4PD, UK.
Issue : August 2002iii
Professional Radio
GM Series
Detailed Service Manual 
6864115B62-B
Contents
Section 1 Service Maintainability
Section 2 Controlhead Service Information
Section 3 Controller Service Information
Section 4 VHF Service Information
Section 5 UHF Service Information
Section 6 Lowband Service Information 
						

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							 Professional Radio
GM Series
Service Maintainability
Issue: August 2002 
						

							ii
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 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 or reproduced 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 
royalty-free license to use that arises by operation of law in the sale of a product. 
						

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Table of Contents
Chapter 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 European Radio Support Centre (ERSC) ....................................................... 1-2
2.4 Parts Identification and Ordering .................................................................... 1-2
2.5 EMEA Test Equipment Support...................................................................... 1-2
2.6 Technical Support........................................................................................... 1-3
2.7 Related Documents ........................................................................................ 1-3
3.0 Radio Model Information ...................................................................................... 1-4
Chapter 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
Chapter 3 SERVICE AIDS
1.0 Recommended Test Tools ................................................................................... 3-1
2.0 Test Equipment .................................................................................................... 3-2 
						

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SAFETY AND GENERAL INFORMATION
IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION 
Read this infomation before using your radio.
The information provided in this document supersedes the general safety information contained in user guides 
published prior to July 2000.  For information regarding radio use in a hazardous atmosphere please refer to the 
Factory Mutual (FM) Approval Manual  Supplement or Instruction Card, which is included with radio models that 
offer this capability.
Radio Frequency (RF) Operational Characteristics
To transmit (talk) you must push the Push-To-Talk button; to receive (listen) you must release the Push-To-Talk 
button.  When the radio is transmitting, it generates radio frequency (RF) energy; when it is receiving, or when it 
is off, it does not generate RF energy.
PORTABLE RADIO OPERATION AND EME EXPOSURE
Your Motorola radio is designed to comply with the  following national and international standards and guidelines 
regarding exposure of human beings to radio frequency electromagnetic energy:

United States Federal Communications Commission, Code of Federal Regulations; 47 CFR part 2 sub-part J

American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) 
C95. 1-1992

Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition

National Council on Radiation Protection and Measurements (NCRP) of the United States, Report 86, 1986

International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998

Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radiofrequency Electromagnetic 
Fields in the Frequency Range from 3 kHz to 300 GHz, 1999

Australian Communications Authority Radiocommunications (Electromagnetic Radiation - Human Exposure) 
Standard 1999 (applicable to wireless phones only)
To assure optimal radio performance and make sure human exposure to radio frequency electromagnetic energy 
is within the guidelines set forth in the above standards, always adhere to the following procedures:
Phone operation
When placing or receiving a phone call, hold your phone as you would a wireline telephone. Speak directly into 
the microphone.
Two-way radio operation
When using your radio hold the radio in a vertical position with the microphone 2.5 to 5 cm away from the lips.
Body-worn operation
To maintain compliance with FCC RF exposure guidelines, if you wear a radio on your body when transmitting, 
always place the radio in a Motorola approved clip, holder, holster, case, or body harness for this product.  Use of 
non-Motorola-approved body worn accessories may exceed FCC RF exposure guidelines. If you do not use a 
Motorola approved body-worn accessory and are not using the radio in the intended use positions along side of 
the head in the phone mode or in front of the face in the two-way radio mode, then ensure the antenna and radio 
is kept the following minimum distances from the body when transmitting:

Phone or Two-way radio mode:  2.5 cm (one inch) 

Data operation using any data feature with or without an accessory cable: 2.5 cm (one  inch)  .
Antenna Care
Use only the supplied or an approved replacement antenna.  Unauthorized antennas, modifications, or 
attachments could damage the radio and may violate FCC regulations.
DO NOT hold the antenna when the radio is IN USE.  Holding the antenna affects call quality and may cause 
the radio to operate at a higher power level than needed.
Approved Accessories
For a list of approved Motorola accessories please contact your dealer or local Motorola representative. 
						

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ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY
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.
Aircraft
When instructed to do so, turn off your radio when on board an aircraft.  Any use of a radio must be in accordance 
with applicable regulations per airline crew instructions.
Medical Devices
Pacemakers
The Health Industry Manufacturers Association recommends that a minimum separation of 15 cms 
(6 inches) be maintained between a handheld wireless radio and a pacemaker.These recommendations are 
consistent with those of the U.S. Food and Drug Administration.
Persons with pacemakers should:

ALWAYS keep the radio more than 15 cms (6inches) from their pacemaker when the radio is turned ON.

not carry the radio in the breast pocket.

use the ear opposite the pacemaker to minimize the potential for interference.

turn the radio OFF immediately if you have any reason to suspect that interference is taking place.
Hearing Aids
Some digital wireless radio products may interfere with some hearing aids. In the event of such interference, you 
may want to consult your hearing aid manufacturer to discuss alternatives.
Other Medical Devices
If you use any other personal medical device, consult the manufacturer of your device to determine if it is 
adequately shielded from RF energy. Your physician may be able to assist you in obtaining this information.
Safety and General
Use While Driving
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.

Use hands-free operation, if available.

Pull off the road and park before making or answering a call if driving conditions so require.       NOTE
Nearly every electronic device is susceptible to electromagnetic interference (EMI) if 
inadequately shielded, designed, or alternately configured for electromagnetic compatibility.