August, 1996 6880904Z07-O
 
v
 
GP350 Portable Radios Service Manual Foreword 
Scope of Manual
Scope of Manual
 
This manual is intended for use by experienced technicians 
familiar with similar types of equipment. It contains all ser-
vice information required for the equipment described and is 
current as of the printing date. Changes which occur after the 
printing date are incorporated by instruction manual revi-
sion. These revisions are added to the manuals as the engi-
neering changes are incorporated into the equipment.
How to Use This Manual
 
This manual contains introductory material such as model 
charts, accessories, and specifications, as well as four sec-
tions that deal with specific service aspects of the GP350. 
Refer to the Table of Contents for a general overview of the 
manual, or to the “Overview” paragraph in each section for 
a specific overview of the information in that section.
Other Documentation
 
Table 1 lists other documentation for the GP350 Portable 
Radios. 
Technical Support
 
To obtain technical support, you may call Motorola’s Radius 
Product Services. When you call, we ask that you have ready 
the model and serial numbers of the respective radio or its 
parts.
Service Policy
 
If malfunctions occur within 30 days that cannot be resolved 
over the phone with Radius Product Services, a defective 
major component should be returned. You must obtain autho-
rization from Radius Product Services before returning the 
component.
Ordering Replacement Parts
 
You can order additional components and some piece parts 
directly through your Radius price pages. When ordering 
replacement parts, include the complete identification num-
ber for all chassis, kits, and components. If you do not know 
a part number, include with your order the number of the 
chassis or kit which contains the part, and a detailed descrip-
tion of the desired component. If a Motorola part number is 
identified on a parts list, you should be able to order the part 
through Motorola Parts. If only a generic part is listed, the 
part is not normally available through Motorola. If no parts 
list is shown, generally, no user serviceable parts are avail-
able for the kit.
 
Technical Support (U.S. and Canada)
 
Radius Product Services
Hwy. 34 West
Mt. Pleasant, IA 52641 USA
1-800-356-1520 (U.S. and Canada)
319-385-5395 (Outside U.S.)
 
Technical Support (Latin America, Mexico, Caribbean)
 
1-800-694-2161 (Latin America, Mexico, Caribbean)
 
Radius 30-Day Warranty
 
Radius Repair Depot
Attention: Warranty Return
1000 W. Washington Street
Mt. Pleasant, IA 52641 USA
1-800-356-1520
319-385-5395 (Outside U.S.)
 
Radius Major Component Repair
 
Radius Repair Depot
1000 W. Washington Street
Mt. Pleasant, IA 52641 USA
 
Motorola Parts
 
Americas Parts Division
Attention: Order Processing
1313 E. Algonquin Road
Schaumburg, IL 60196
 
Customer Service Motorola Parts
 
1-800-422-4210
1-708-538-8198 (FAX)
 
Parts Identification
 
1-708-538-0021
1-708-538-8194 (FAX)
 
Table 1. Other Documentations
 
Information Location
 
Basic Use of GP350 GP350 User Guide (6880904Z01)
Programming GP350 RSS Manual (6880904Z09)