R.V.R. Elettronica PJRL250, Техническое руководство

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PJRL250 Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 27
3) Disconnect the Low Pass Filter's connector.
4) Unscrew two screws securing the low pass filter to rear panel.
5) Carefully remove the low pass filter.
6) Take note of the wiring of J1, J2 and J3 Power Supply's connectors.
7) Disconnect J1, J2 and J3 connectors of the Power Supply
8) Unscrew six screws securing the Power Supply the the hex standoofs.
9) Carefully remove the Power Supply.
4.5 R.F. POWER AMPLIFIER MODULE REPLACEMENT
1) Open the top cover.
2) Take note of the wiring of CN1, J1, and J2 R.F. Power Amplifier Module
connectors.
WARNING! INCORRECT CONNECTIONS CAN DESTROY THE R.F. MODULE
3) Disconnect CN1, J1 and J2 R.F. Module's connectors.
4) Remove the air filter of the R.F. Module from the front panel
unscrewing four fixing hexagon nuts.
5) Unscrew two screws securing the R.F. Module to the front panel.
6) Unscrew the screws securing the R.F. module on the rear rail, the
right side and internal chassis.
7) Careffully remove the R.F. Module.
4.6 LOW PASS FILTER REPLACEMENT
1) Open the top covers.
2) Take note of the wiring of J2, J3, J4, and J5 Low Pass
Filter's connectors.
3) Disconnect the Low Pass Filter's connector.
4) Unscrew two screws securing the low pass filter to rear panel.
5) Carefully remove the low pass filter.
4.4 SOFT-START REPLACEMENT