R.V.R. Elettronica PTX30 UHT/S3, User Manual

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PTX30 UHT /S3
24 / 36 User Manual Rev. 5.0 - 10/12/2001
• Disconnect the shielded cable connecting the Main Card and the R.F. Power
Amplifier.
• Unscrew the bolts that hold the board in place.
• Carefully remove the board.
8.3.2.4 Audio input card replacement
• Open the top and bottom covers.
• Disconnect CN1 and CN2. This is easily performed if you disconnect CN6 on
the main card before.
• Unscrew the bolts of BNC1 and BNC2 on the rear panel.
• Dismount the two fixing screws of the terminal board on the rear panel.
• Desolder the six wires connecting the AUDIO INPUT MAIN CARD to the audio
connectors RIGHT (mono) and LEFT (mpx).
• Desolder the wire connecting the AUDIO ALARM CARD with the AUDIO INPUT
CARD (IF IT'S PRESENT).
• Dismount the board moving it upwards.
8.3.2.5 Modmeter board replacement
• Open the top and the bottom covers.
• Disconnect CN1.
• Unscrew the bolts of the switches SW1 and SW3 on the front panel.
• Remove the board very carefully.
8.3.2.6 Anameter board replacement
• Open the top and bottom covers.
• Dismount the knob INPUT LEVEL dBm (it’s secured with a screw).
• Dismount the securing screws of the front panel.
• Disconnect CN1, the one that connects the ANAMETER BOARD with the MAIN
CARD.
• Unscrew the two bolts securing the METER SELECTOR and POWER SWITCH.
• Remove the front panel.
• Disconnect CN1, CN4, JP1 and JP2 from the ANAMETER BOARD.
• Unscrew the two bolts securing the ANAMETER BOARD to the meter.
• Dismount the board carefully.
8.3.2.7 CPU replacement
• Unscrew the top and bottom cover.
• Dismount the securing screws of the front panel.