MLS MLSH041 Installationshandbuch PDF herunterladen (Seite 3)

TABLE OF CONTENTS LBI-38425A

TABLE OF CONTENTS

Page

1 Description................................................................................................................................................ 4

2 Initial Adjustment....................................................................................................................................4

2.1 Transmitter Adjustment ...................................................................................................................4

2.2 Receiver Adjustment........................................................................................................................4

2.3 Re-Installation..................................................................................................................................4

3 Maintenance .............................................................................................................................................5

3.1 Preventive Maintenance...................................................................................................................5

3.1.1 Connections .......................................................................................................................5

3.1.2 Electrical System ............................................................................................................... 5

3.1.3 Mechanical Inspection....................................................................................................... 5

3.1.4 Antenna..............................................................................................................................5

3.1.5 Alignment ..........................................................................................................................5

3.1.6 Frequency Check ............................................................................................................... 5

3.1.7 Disassembly.......................................................................................................................6

3.2 Driver Replacement ......................................................................................................................... 6

3.2.1 To Remove Driver HC1.....................................................................................................6

3.2.2 To Replace Driver HC1..................................................................................................... 6

3.3 PA Transistor Replacement.............................................................................................................. 6

3.4 Chip Component Replacement......................................................................................................... 8

3.4.1 To Remove Chip Components...........................................................................................8

3.4.2 To Replace Chip Components ........................................................................................... 8

4 Disassembly Procedure............................................................................................................................ 9

4.1 To Remove the System Control/Synthesizer Board......................................................................... 9

4.2 To Remove the Transmitter/Receiver Board.................................................................................... 9

4.3 To Remove the Front Panel/Control Unit ........................................................................................ 10

5 Alignment and Troubleshooting Procedures.........................................................................................12

5.1 Synthesizer....................................................................................................................................... 12

5.1.1 Test Equipment Required ..................................................................................................12

5.1.2 TX VCO & RX VCO Alignment....................................................................................... 13

5.1.3 Transmitter Frequency Adjustment....................................................................................14

5.1.4 Receiver Frequency Adjustment........................................................................................ 15

5.1.5 Modulation Level Adjustment ........................................................................................... 15

5.1.6 Audio Check...................................................................................................................... 15

5.1.7 Audio Output Level Adjustment Procedure....................................................................... 16

5.1.8 Control Logic Troubleshooting .........................................................................................17

5.2 Transmitter....................................................................................................................................... 18

5.2.1 General Description of Adjustment ...................................................................................18

5.2.2 Measuring Instruments.......................................................................................................18

5.2.3 Transmitter Adjustment Procedure.................................................................................... 20

5.3 Receiver ........................................................................................................................................... 23

5.3.1 Receiver Alignment...........................................................................................................23

5.3.2 Alignment Procedure......................................................................................................... 24

5.3.3 Fixed Squelch Adjustment.................................................................................................25

5.3.4 Receiver Test Procedures ..................................................................................................25

1 2 3 4 5 6 7 8 ... 29 30

Kommentare zu diesen Handbüchern

Keine Kommentare

MLS MLSH041 Installationshandbuch Seite 3

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Funkgeräte MLS MLSH041