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PJ250-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo)
Pag. 29
2)
Disconnect connector J1 on the switching card.
3)
Unscrew the two fixing screw of D1 and U1 devices, placed on the
heat-sink.
4)
Unscrew the fixing screws of the switching card.
5)
Remove the card.
NOTE: During replacement of broken devices it's necessary to pay
attention to device's pin position and insertion, to check that the
device's fixing screws aren't in short-circuit and to check that the
soldering is good and without impurities.
NOTE: Interpose between devices and heat-sink an electronic silicone
compound.
4.5 LOW PASS FILTER REPLACEMENT
1)
Open the top cover of the unit.
2)
Disconnect output SMA connector.
3)
Desolder input cable and the cover's box.
4)
Unscrew the four fixing screw of the Low Pass Filter.
5)
Remove the Low Pass Filter.
4.6 ALARMS CARD REPLACEMENT
1)
Open the top cover.
2)
Remove the screws fixing the card on the left side of the amplifier.
3)
Take note of the position of wires placed on the rear of the metal
box.
4)
Unsolder the wires placed on the rear of the metal box.
5)
Extract the Alarms card.
4.7 DIRECTIONAL COUPLER REPLACEMENT
1)
Open the top cover.
2)
Disconnect output SMA connector.
3)
Remove the fixing screws of the "N" type output connector (7 Fig.2).
Содержание PJ250-NV
Страница 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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Страница 21: ...PJ250 NV Technical and Maintenance Manual R V R Elettronica S r l Bo Pag 21 P H O T O 1 5 4 3 1 2...
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Страница 95: ...PJ250 i Appendix Rev 0 1 03 09 02 APPENDIX Description RVR Code Vers Page Power Supply PSSW2812B 0 1 4...
Страница 96: ...PJ250 ii Appendix Rev 0 1 03 09 02 Pagina lasciata intenzionalmente in bianco...
Страница 97: ...PJ250 PSSW2812B 1 4 Technical Appendix Rev 0 1 03 09 02...