R.V.R. Elettronica RXRL-NV/2, Техническое руководство

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RXRL-NV/2 Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 31
3) Desolder the power cable.
4) Unscrew the Front-End/Mixer from the cover of the metal container
protecting the Audio Process and 70MHz IF cards.
5) Remove the Front-End/Mixer with great car
4.8 P.L.L. REPLACEMENT
1) Open the top cover of the unit.
2) Desolder the wire connecting the PLL to the Doubler.
3) Disconnect connectors CN1, CN2 and CN3.
4) Undo the nuts fixing the PLL card in place.
5) Remove the PLL with great care.
4.9 MUTING CARD REPLACEMENT
1) Open the top cover of the unit.
2) Disconnect connector CN0.
3) Undo the nut fixing the LEVEL MUTING trimmer to the front panel.
4) Remove the Muting card with great care.
4.10 AUDIO PROCESS CARD REPLACEMENT
1) Open the top cover unit.
2) Open the cover of the metal container which protects the Audio
Process card and the 70MHz IF card and it will also be necessary to
disconnect the Front-End, the Mixer and Doubler connectors fixed to
the cover.
3) Take note of the position of the various connectors of the Audio
Process and 70MHz IF cards.
4) Disconnect connectors CN1, CN2, CN3 and CN4 from the Audio Process
card and connectors CN2, CN3, CN4, CN5 and CN6 from the 70MHz IF
card, the latter to facilitate removal.
5) Undo the nuts holding the card in place and remove the card with
the great care.