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Unique Broadband Systems Ltd.
DRU1KW
User Manual
Unique Broadband Systems Ltd. DRU1KW User Manual
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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
6.5.1
Combined DRU Shutdown................................................................. 6-4
6.5.1.1
Full System Shutdown ........................................................... 6-4
6.5.1.2
Low Band Sub-system Shutdown............................................. 6-6
6.5.1.3
High Band Sub-system Shutdown............................................ 6-7
6.5.2
Independent DRU-200 Shutdown....................................................... 6-8
6.5.2.1
Full System Shutdown ........................................................... 6-8
6.5.2.2
Low Band Sub-system Shutdown............................................6-10
6.5.2.3
High Band Sub-system Shutdown...........................................6-11
6.5.3
High Band Exciter (HBE) Replacement ...............................................6-12
6.5.3.1
HBE Removal ......................................................................6-12
6.5.3.2
HBE Installation ...................................................................6-13
6.5.4
Low Band Exciter (LBE) Replacement ................................................6-15
6.5.4.1
LBE Removal .......................................................................6-15
6.5.4.2
LBE Installation ...................................................................6-16
6.5.5
Terrestrial Repeater Monitoring System (TRMS) Replacement ...............6-19
6.5.5.1
TRMS Removal ....................................................................6-19
6.5.5.2
TRMS Installation .................................................................6-20
6.5.6
Air-to-Air Heat Exchanger/Heater Replacement...................................6-21
6.5.6.1
Air-to-Air Heat Exchanger/Heater Removal ..............................6-21
6.5.6.2
Air-to-Air Heat Exchanger/Heater Installation...........................6-25
6.5.7
HPA Power Supply Unit 30 VDC Rectifier Module Replacement...............6-26
6.5.7.1
HPA PS (30 VDC Rectifier Module) Removal .............................6-27
6.5.7.2
High Band Cabinet HPA PS (30 VDC Rectifier Module) Installation6-28
6.5.8
HPA PSU Mounting Shelf Replacement ...............................................6-29
6.5.8.1
HPA PSU Mounting Shelf Removal...........................................6-29
6.5.8.2
HPA PSU Mounting Shelf Installation .......................................6-31
6.5.9
HPA Replacement ...........................................................................6-32
6.5.9.1
HPA Removal.......................................................................6-36
6.5.9.2
HPA Installation ...................................................................6-36
6.5.10
Air Intake Filter Replacement ...........................................................6-37
6.5.10.1
Air Intake Filter Removal.......................................................6-37
6.5.10.2
Air Intake Filter Installation ...................................................6-37
6.5.11
Fan Box Replacement .....................................................................6-38
6.5.11.1
Fan Box Removal .................................................................6-38
6.5.11.2
Fan Box Installation..............................................................6-40
SX03-20000-01-M01
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