Unique Broadband Systems Ltd. DRU1KW 用户手册

Chapter

6

Maintenance

Contents

6 Maintenance............................................................................... 6-1

6.1

Introduction............................................................................................ 6-1

6.2

Test Equipment ....................................................................................... 6-1

6.3

Required Tools ........................................................................................ 6-1

6.4

Preventative Maintenance....................................................................... 6-2

6.5

Replacement Procedures......................................................................... 6-2

Combined DRU Shutdown................................................................. 6-4

Full System Shutdown ........................................................... 6-4

Low Band Sub-system Shutdown............................................. 6-6

High Band Sub-system Shutdown............................................ 6-7

Independent DRU-200 Shutdown....................................................... 6-8

Full System Shutdown ........................................................... 6-8

Low Band Sub-system Shutdown............................................6-10

High Band Sub-system Shutdown...........................................6-11

High Band Exciter (HBE) Replacement ...............................................6-12

HBE Removal ......................................................................6-12

HBE Installation ...................................................................6-13

Low Band Exciter (LBE) Replacement ................................................6-15

LBE Removal .......................................................................6-15

LBE Installation ...................................................................6-16

Terrestrial Repeater Monitoring System (TRMS) Replacement ...............6-19

TRMS Removal ....................................................................6-19

TRMS Installation .................................................................6-20

Air-to-Air Heat Exchanger/Heater Replacement...................................6-21

Air-to-Air Heat Exchanger/Heater Removal ..............................6-21

Air-to-Air Heat Exchanger/Heater Installation...........................6-25

HPA Power Supply Unit 30 VDC Rectifier Module Replacement...............6-26

HPA PS (30 VDC Rectifier Module) Removal .............................6-27

High Band Cabinet HPA PS (30 VDC Rectifier Module) Installation6-28

HPA PSU Mounting Shelf Replacement ...............................................6-29

HPA PSU Mounting Shelf Removal...........................................6-29

HPA PSU Mounting Shelf Installation .......................................6-31

HPA Replacement ...........................................................................6-32

HPA Removal.......................................................................6-36

HPA Installation ...................................................................6-36

Air Intake Filter Replacement ...........................................................6-37

Air Intake Filter Removal.......................................................6-37

Air Intake Filter Installation ...................................................6-37

Fan Box Replacement .....................................................................6-38

Fan Box Removal .................................................................6-38

Fan Box Installation..............................................................6-40

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