Motorola pro7100 Manuel de service télécharger pdf (Page 9)

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2.11.3 Microprocessor Circuit ......................................................................................................... 2-37

2.11.4 SBEP Serial Interface .......................................................................................................... 2-38

2.11.5 Keypad Keys........................................................................................................................ 2-38

2.11.6 Status LED and Back Light Circuit....................................................................................... 2-38

2.11.7 Liquid Crystal Display (LCD)................................................................................................ 2-39

2.11.8 Microphone Connector Signals............................................................................................ 2-39

2.11.9 Speaker................................................................................................................................ 2-40

2.11.10 Electrostatic Transient Protection ........................................................................................ 2-40

Chapter 3 Maintenance

3.1 Introduction ................................................................................................................................... 3-1

3.2 Preventive Maintenance ............................................................................................................... 3-1

3.2.1 Inspection............................................................................................................................... 3-1

3.2.2 Cleaning................................................................................................................................. 3-1

3.3 Safe Handling of CMOS and LDMOS ........................................................................................... 3-2

3.4 General Repair Procedures and Techniques ............................................................................... 3-2

3.5 Recommended Test Tools ............................................................................................................ 3-5

3.6 Transmitter Troubleshooting Chart ................................................................................................ 3-6

3.7 Receiver Troubleshooting Charts ................................................................................................. 3-7

3.8 Synthesizer Troubleshooting Charts ............................................................................................. 3-9

3.9 VCO Troubleshooting Charts....................................................................................................... 3-11

Chapter 4

Schematic Diagrams, Overlays, and Parts Lists

4.1 Introduction ................................................................................................................................... 4-1

4.1.1 Notes For All Schematics and Circuit Boards........................................................................ 4-1

List of Figures

2-1 Controller Block Diagram............................................................................................................... 2-1

2-2 DC Power Distribution Block Diagram ........................................................................................... 2-3

2-3 Transmit Audio Paths .................................................................................................................... 2-9

2-4 Transmit Signalling Paths ............................................................................................................ 2-11

2-5 Receive Audio Paths ................................................................................................................... 2-13

2-6 Receive Signalling Paths ............................................................................................................. 2-16

2-7 UHF Receiver Block Diagram...................................................................................................... 2-18

2-8 UHF Transmitter Block Diagram.................................................................................................. 2-20

2-9 UHF Synthesizer Block Diagram ................................................................................................. 2-23

2-10 UHF VCO Block Diagram ............................................................................................................ 2-24

2-11 VHF Receiver Block Diagram ...................................................................................................... 2-26

2-12 VHF Transmitter Block Diagram .................................................................................................. 2-28

2-13 VHF Synthesizer Block Diagram ................................................................................................. 2-31

2-14 VHF VCO Block Diagram ............................................................................................................ 2-32

4-1 PRO3100/CDM750 Control Head Top Overlay............................................................................ 4-3

4-2 PRO3100/CDM750 Control Head Bottom Overlay ....................................................................... 4-4

4-3 PRO3100CDM750 Control Head Schematic Diagram, Sheet 1 ................................................... 4-5

4-4 PRO3100CDM750 Control Head Schematic Diagram, Sheet 2 ................................................... 4-6

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Motorola pro7100 Manuel de service Page 9

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