Motorola Gp350 6880904z07 0 Manual
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GP350 Portable Radios 146-174 MHz 438-470 MHz 6880904Z07-O
Motorola Radius Division Hwy 34 West Mt. Pleasant, IA 52641 6880904Z07-O *6880904Z07**6880904Z07*
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 pro- grams contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written per- mission 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. Airbag Warning Statement WARNING VEHICLES EQUIPPED WITH AIR BAGS An air bag inflates with great force. DO NOT place objects, including communication equipment, in the area over the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air bag inflates, this could cause serious injury. • Installation of vehicle communication equipment should be performed by a professional installer/technician qualified in the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and front compartment configuration (e.g., bench seat vs. bucket seats). • Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle make, model and front compartment configuration involved in your communication equipment installation. !
6880904Z07-OiTable of ContentsScope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Other Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Service Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Model Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xii Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xii Test Set Service Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Radio Model Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Radio Service Software Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv Configuring the RIB and Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv Section 1 Safety Information General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 FCC Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Section 2 Intrinsically Safe Radio Information FMRC Approved Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Repair of FMRC Approved Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Relabeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Do Not Substitute Options or Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Section 3 Disassembly/Reassembly Remove Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Remove Belt Clip from Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Remove Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Remove the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Re-assembly of Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ii6880904Z07-OAugust, 1996GP350 Portable Radios Service ManualSection 4 Theory of Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Microcomputer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Microcomputer Power-Up and Reset Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Intermediate Frequency (IF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Frequency Generation Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 TX Audio Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Internal MIC Bias Switch and External PTT Sense Circuits . . . . . . . . . . . . . . . . . . 4-4 MIC Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 TX Audio Mute Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Pre-emphasis Amplifier (standard models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Option Interface Connector P1 (Keypad/Display models) . . . . . . . . . . . . . . . . . . . 4-4 Limiter (Audio Filter IC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Post-Limiter Filter (Audio Filter IC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 PL Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 DTMF Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Deviation Attenuators (Audio Filter IC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 RX Audio Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 PL Rejection Filter (Audio Filter IC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 PL Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Center-Slicer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Option Interface Connector P1 (Keypad/Display Models) . . . . . . . . . . . . . . . . . . . 4-5 RX Audio Mute Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Audio Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Noise Squelch Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Vox Circuit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 GP350 Portable Radio Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 Receiver, Transmitter, VCO, Synthesizer, and AFIC Block Diagrams . . . . . . . . . . . . . . . . . . . 4-8 Section 5 Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Troubleshooting Flow Chart for Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Troubleshooting Flow Chart for Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Troubleshooting Flow Chart for Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Troubleshooting Flow Chart for Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Troubleshooting Flow Chart for VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
August, 19966880904Z07-OiiiGP350 Portable Radios Service Manual Section 6 Component Location Diagrams, Schematic Diagrams, Exploded Views, and Parts Lists General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Schematic Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Parts List: 0180702Y89 Battery Filter Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Parts List: Flex Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Component Location Diagrams, Schematic Diagrams, and Parts Lists for Battery Filter Board and Flex Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Component Location Diagram for HLD9440A and HLD9441A VHF, 146-174MHz, Transceiver and Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Schematic Diagram for HLD9440A and HLD9441A VHF, 146-174MHz, Transceiver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 Component Location Diagram for HLE9480A and HLE9481A UHF, 438-470MHz, Transceiver Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 Schematic Diagram for HLE9480A and HLE9481A UHF, 438-470MHz, Transceiver Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5 Schematic Diagram for Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6 Parts List: Controller Components (for all bandsplits) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 Parts List: HLD9440A and HLD9441A, 146-174MHz VHF Transceiver. . . . . . . . . . . . . . . . . 6-8 Parts List: HLE9480A and HLE9481A, 438-470MHz UHF Transceiver . . . . . . . . . . . . . . . . . 6-9 Parts List: GP350 Basic Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10 HLN9960A DTMF Circuit Board Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11 HLN9960A DTMF Schematic Diagram and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12 Battery Chargers Single and Multi-Unit Rapid Rate (1 Hour). . . . . . . . . . . . . . . . . . . . . . . . . 6-13 Battery Chargers Single and Multi-Unit Rapid Rate (1 Hour). . . . . . . . . . . . . . . . . . . . . . . . . 6-14 Battery Chargers Standard Rate (10 Hour) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15 Battery Chargers Standard Rate (10 Hour) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16 Schematic Diagram and Parts List for HMN9041A Remote Speaker/Microphone . . . . . . . . 6-17 Exploded View and Parts List for HMN9041A Remote Speaker/Microphone . . . . . . . . . . . . 6-18
iv6880904Z07-OAugust, 1996GP350 Portable Radios Service Manual
August, 1996 6880904Z07-O v GP350 Portable Radios Service ManualForeword 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)
vi 6880904Z07-O August, 1996 ForewordGP350 Portable Radios Service Manual Model Charts Model Charts Item Description X X HHN9126_ Housing X HLD9440_ RF Board, 2-Chan., 20/25 kHz, (146-174 MHz) X HLD9441_ RF Board, 16-Chan., 20/25 kHz, (146-174 MHz) X X HLN8255_ Spring-Action Belt Clip, 3” X X HLN9152_ Chassis Hardware Assembly X HLN9202_ 2-Channel Control Kit X HLN9203_ 16-Channel Control Kit X X NAD6502_ Antenna (146-174 MHz) X X 6880904Z01 Users Guide/Quick Reference Card Description2-Chan., 20/25 kHz (146-174 MHz) 16-Chan., 20/25 kHz (146-174 MHz) GP350 VHF 146 - 174 MHz X = Indicates one of each required ModelP93MGC20A2A_ P93MGC20C2A_
August, 1996 6880904Z07-O vii GP350 Portable Radios Service ManualForeword Model Charts Item Description XX HHN9126_ Housing X HLE9480_ RF Board, 2-Chan., 20/25 kHz (438-470 MHz) X HLE9481_ RF Board, 16-Chan., 20/25KHz, (438-470 MHz) XX HLN8255_ Spring-Action Belt Clip, 3” XX HLN9152_ Chassis Hardware Assembly X HLN9202_ 2-Channel Control Kit X HLN9203_ 16-Channel Control Kit XX NAE6483_ Antenna XX 6880904Z01 User Guide /Quick Reference Card Description2-Chan., 20/25 kHz (438-470 MHz) 16-Chan., 20/25 kHz (438-470 MHz) GP350 UHF 438 - 470 MHz X = Indicates one of each required ModelP94MGC20A2A_ P94MGC20C2A_