User's Manual
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
SX03-2000
0-01-M01