Motorola MDH65SDC9AA2AN Información de servicio - Página 3

Navegue en línea o descargue pdf Información de servicio para Radio portátil Motorola MDH65SDC9AA2AN. Motorola MDH65SDC9AA2AN 46 páginas.

Chapter 1

1.0 CP140/CP160/CP180 Model Chart .....................................................................1-1

2.0 Technical Specifications ......................................................................................1-2

Chapter 2

1.0 Introduction ..........................................................................................................2-1

2.0 UHF3 (465-495MHz) Receiver ...........................................................................2-1

2.1 Receiver Front-End .......................................................................................2-2

2.2 Receiver Back-End.........................................................................................2-3

3.0 UHF3 (465-495MHz) Transmitter.........................................................................2-4

3.1 Transmitter Power Amplifier ...........................................................................2-4

3.2 Antenna Switch...............................................................................................2-4

3.3 Harmonic Filter ...............................................................................................2-5

3.4 Antenna Matching Network ............................................................................2-5

3.5 Power Control.................................................................................................2-5

4.0 UHF3 (465-495MHz) Frequency Generation Circuitry........................................2-6

4.1 Fractional-N Synthesizer ................................................................................2-7

4.2 Voltage Controlled Oscillator (VCO) ...............................................................2-8

Chapter 3

1.0 Troubleshooting Table for Receiver.....................................................................3-1

2.0 Troubleshooting Table for Synthesizer ................................................................3-3

3.0 Troubleshooting Table for Transmitter ................................................................3-4

4.0 Troubleshooting Table for Board and IC Signals .................................................3-6

Chapter 4

UHF PCB/SCHEMATICS/PARTS LISTS

1.0 Allocation of Schematics and Circuit Boards .......................................................4-1

1.1 UHF3 (465-495MHz) ......................................................................................4-1

1.2 Six Layer Circuit Board...................................................................................4-1

2.0 UHF3 PCB 8486634Z02-O Schematic Diagrams................................................4-3

3.0 UHF3 PCB 8486634Z02-O Parts List ................................................................4-11

iii

Table of Contents