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PJ250-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo)
Pag. 28
CHAPTER 4
MAINTENANCE
This
chapter
provides
general
maintenance
information
and
electrical adjustment procedures for the PJ250-NV Amplifier.
Maintenance is divided into categories dependent upon the complexity of
the procedure and the test equipment required to complete the
maintenance.
4.1 SAFETY CONSIDERATIONS
WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!
When the amplifier is operated with the top cover removed, hazardous
voltages are accessible on the AC line voltage selector and heavy currents
are accessible on the exposed terminals of the power supply filter
capacitor and power transistors mounted on the RF amplifier heat sink
assembly.
Use the insulated tuning tool provided for any adjustment and do not touch
any component within the amplifier when power is applied.
Ensure all primary power is disconnected from the amplifier before
attempting equipment maintenance.
FIRST LEVEL MAINTENANCE
4.2 ORDINARY MAINTENANCE
The only regular maintenance needed by the PJ250-NV, is the periodic
replacement 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.
Blowers should be checked every 6 months and replace if noisy.
They should be replaced any way after 18 months of service.
SECOND LEVEL MAINTENANCE
4.3 CARDS REPLACEMENT
This section contains useful information for card replacement.
WARNING! TO RE-INSTALL CARDS SIMPLY FOLLOW THE REVERSE PROCEDURE.
4.4 POWER SUPPLY REPLACEMENT
1) Open the bottom cover.
Summary of Contents for PJ250-NV
Page 17: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 17 F I G 1...
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Page 23: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 23 P H O T O 2 1 3 2...
Page 24: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 24 F I G 3...
Page 49: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 49 F I G 1...
Page 51: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 51 F I G 2...
Page 53: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 53 FOTO 1 5 4 3 1 2...
Page 55: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 55 FOTO 2 1 3 2...
Page 56: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 56 F I G 3...
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Page 96: ...PJ250 ii Appendix Rev 0 1 03 09 02 Pagina lasciata intenzionalmente in bianco...
Page 97: ...PJ250 PSSW2812B 1 4 Technical Appendix Rev 0 1 03 09 02...