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HC4
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User Manual
Rev. 1.0L - 01/04/02
10. Maintenance Procedures
10.1
Introduction
This section provides general maintenance information and electrical adjustment
for the HC4 hybrid coupler.
Maintenance is divided into categories dependent upon the complexity of the
procedure and the test equipment required to complete the maintenance.
10.2
Safety Consideration
When the amplifier is operational, hazardous voltages and high currents are
accessible internally, and there are high power R.F. signals.
Don’t remove any cover without switching off the system first and close all
covers before restarting the system.
Ensure all primary power is disconnected from the amplifier before attempting
equipment maintenance.
MAINTENANCE LEVEL 1
10.3
Routine Maintenance
The only regular maintenance needed by HC4, is the periodic substitution of the
blowers, and the cleaning of dust filters and any dust accumulated inside the
amplifier.
The time between overhauling of the blowers depends upon several environmental
factors, temperature, humidity, dust pollution etc.
It’s advisable to check the unit every 6 months, and to substitute noisy blowers.
Blowers should be changed as a matter of course at least every 18 months.
10.4
Cards Replacement
10.4.1
CPU Group Replacement
•
Disconnect J1 and J2 alarms card’s connectors.
•
Disconnect JP1 alarms card’s connector.
•
Remove the screws securing the board to the front panel.
•
Carefully extract the card.
Summary of Contents for HC4
Page 1: ...Manufactured by Italy HC4 User Manual LCD version...
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Page 43: ...HC4 CSSPL INCH4 1 4 Appendice Tecnica Rev 1 0 01 04 02...
Page 47: ...HC4 CSSMB1HC5 1 4 Appendice Tecnica Rev 1 0 01 04 02...
Page 51: ...HC4 CSPWR MTRHC5 1 4 Appendice Tecnica Rev 1 0 01 04 02...
Page 55: ...HC4 CSPROTF 1 10 Appendice Tecnica Rev 1 2 07 10 02...
Page 57: ...HC4 CSPROTF 3 10 Appendice Tecnica Rev 1 2 07 10 02...
Page 60: ...HC4 6 10 CSPROTF Technical Appendix Rev 1 2 07 10 02...
Page 61: ...HC4 CSPROTF 7 10 Appendice Tecnica Rev 1 2 07 10 02...
Page 62: ...HC4 8 10 CSPROTF Technical Appendix Rev 1 2 07 10 02...
Page 65: ...HC4 CSPWRSENHC5 1 4 Appendice Tecnica Rev 1 0 01 04 02...
Page 69: ...HC4 SLREMOTEHC 1 4 Appendice Tecnica Rev 1 0 01 04 02...