Ericsson 1/KRB 101 1108, Installation, Operation And Maintenance Instructions

© 2001 – Ericsson Amplifier Technologies Inc.

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4.7.2

Standby

 Mode: ................................................................................................................ 21

4.7.3

DC On

 Mode .................................................................................................................... 21

4.7.4

Enable

 Mode.................................................................................................................... 21

4.7.5

Shutdown

 Mode .............................................................................................................. 21

4.7.6

ALC

 Mode ........................................................................................................................ 21

4.7.7

Locking

 Mode.................................................................................................................. 22

4.8

Description of Alarm Conditions .......................................................................................... 22

4.8.1

LOOP Alarm ..................................................................................................................... 22

4.8.2

VSWR Alarm .................................................................................................................... 22

4.8.3

TEMP/WARN Alarm ......................................................................................................... 22

4.8.4

PWR SPLY Alarm ............................................................................................................ 23

4.8.5

FAN Alarm........................................................................................................................ 23

4.8.6

OVER PWR Alarm ........................................................................................................... 23

5. MAINTENANCE ................................................................................................... 25

5.1

Introduction ........................................................................................................................... 25

5.2

Periodic Maintenance ............................................................................................................ 25

5.2.1

Cleaning Air Inlets/Outlets ................................................................................................ 26

5.2.2

Test Equipment Required ................................................................................................. 26

5.2.3

Performance Tests ........................................................................................................... 26

5.3

Troubleshooting Procedures................................................................................................ 27

5.4

Fan Assembly Replacement Procedure ............................................................................... 27

List of Figures

Figure 1. Ericsson Amplifier Technologies Inc. Multi-Carrier Power Amplifier..................... 2
Figure 2. Outline/Installation Drawing, Ericsson Amplifier Technologies MCPA ................. 6
Figure 3. MCPA Local Controls and Indicators..................................................................... 11
Figure 4. MCPA Power ON/OFF Sequence............................................................................ 14
Figure 5. Block Diagram, MCPA Power Amplifier ................................................................. 24
Figure 6. MCPA Troubleshooting Flow Chart  ...................................................................... 28

List of Tables

Table 1. Performance Characteristics, MCPA Power Amplifier ............................................. 3
Table 2. J1 – Blind Mate 24W7 D Sub-miniature Connector .................................................. 7
Table 3. MCPA Local Controls and Indicators ...................................................................... 12
Table 4. Periodic Maintenance Tasks.................................................................................... 25
Table 5. Test Equipment Required ........................................................................................ 26