Motorola Pr400 Detailed 6881096c25 B Manual
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MOTOROLA and The Stylized M logo are trademarks of Motorola, Inc. All other product or service names are the property of their respective owners. © 2005 Motorola, Inc. All rights reserved. Printed in U.S.A.*6881096C25*6881096C25-B PR400 ™ Commercial SeriesPortable Radio Detailed Service Manual
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PR400 Portable Radio Detailed Service Manual VHF 136-162 MHz VHF 146-174 MHz UHF 403-440 MHz UHF 438-470 MHz UHF 465-495 MHz Motorola, Inc. 1301 E. Algonquin Road Schaumburg, IL 60196 6881096C25-B
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ii Foreword This manual is intended for use by service technicians familiar with portable two-way radios. 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 Product Safety and RF Exposure Compliance AT T E N T I O N ! This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements. Before...
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Table of Contentsiii 6881096C25-BJune, 2005 Table of Contents Foreword ..................................................................................................................................................... ii Computer Software Copyrights ................................................................................................................... ii Document Copyrights...
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ivTable of Contents June, 20056881096C25-B Module 1: VHF 136-162, 146-174 MHz Chapter 4 136-162 MHz VHF Theory Of Operation ............................ 4-1 4.1 Introduction .................................................................................................................................... 4-1 4.2 VHF Receiver................................................................................................................................. 4-1 4.2.1 Receiver Front-End...
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Table of Contentsv 6881096C25-BJune, 2005 Chapter 7 VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts Lists ................................................... 7-5 Figure 7-3. VHF (136-162 MHz) Radio Circuit Block Interconnect Diagram (8486769Z02-A) ........... 7-5 Figure 7-4. VHF (136-162 MHz) Receiver Front End Schematic Diagram (8486769Z02-A).............. 7-6 Figure 7-5. VHF (136-162 MHz) Receiver Back End Schematic Diagram (8486769Z02-A) .............. 7-7 Figure 7-6. VHF...
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viTable of Contents June, 20056881096C25-B Figure 7-35. VHF (146-174 MHz) Voltage Controlled Oscillator Schematic Diagram (8486342Z13-C)............................................................................................... 7-45 Figure 7-36. VHF (146-174 MHz) Transmitter and Power Control Schematic Diagram (8486342Z13-C)............................................................................................... 7-46 Figure 7-37. VHF (146-174 MHz) Controller Interconnect Schematic Diagram...
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Table of Contentsvii 6881096C25-BJune, 2005 8.4 UHF Frequency Generation Circuitry ............................................................................................ 8-4 8.4.1 Fractional-N Synthesizer ..................................................................................................8-5 8.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 8-6 8.5...
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viiiTable of Contents June, 20056881096C25-B Chapter 12 UHF 403-440 MHz (8486635Z03-O) Schematic Diagrams, Overlays, and Parts Lists ................................................. 12-5 Figure 12-3. UHF (403-440 MHz) Radio Circuit Block Diagram (8486635Z03-O).............................. 12-5 Figure 12-4. UHF (403-440 MHz) Receiver Front End Schematic Diagram (8486635Z03-O) ........... 12-6 Figure 12-5. UHF (403-440 MHz) Receiver Back End Schematic Diagram (8486635Z03-O)............ 12-7 Figure 12-6....