[DUOX PLUS] Spare Part PVT09375 Microphone Amplifier MARINE

Step-by-step instructions on how to replace the microphone of a MARINE DUOX PLUS amplifier.

Step 1: Unscrew and Disconnect

First, unscrew the clamps holding the amplifier to the plate using four hexagonal sockets (Allen keys). Then, remove the cable clamps and disconnect all connectors or flex connectors attached to the amplifier.

Visuals show the amplifier unit secured by clamps, the process of unscrewing these clamps, and the disconnection of various cables and connectors from the amplifier board.

Step 2: Open Rear Casing

Carefully use a flat-blade screwdriver to prise open the rear casing by releasing the clips located on the side.

A visual demonstrates using a flat-blade screwdriver to gently open the rear casing by engaging the side clips.

Step 3: Remove Microphone Plate Screws

To access the microphone, unscrew the three screws that secure the plate holding it in place.

An image highlights three screws on the circuit board that need to be removed to detach the plate covering the microphone.

Step 4: Disconnect Ribbon Cable

Disconnect the flat ribbon cable from the microphone. Use a thin flat-blade screwdriver to press the black retaining tabs on each side of the microphone's connector. Once the tabs are pressed, the ribbon cable can be released. The microphone can then be removed from the front.

Visuals illustrate the process of using a thin flat-blade screwdriver to press the black retaining tabs on the ribbon cable connector, releasing the cable, and then removing the microphone unit from the front.

Step 5: Prepare New Microphone

Prepare the spare microphone for installation.

An image displays the new microphone unit with its attached ribbon cable, ready for installation.

Step 6: Insert New Microphone

Insert the new microphone into its housing from the front. Ensure that the microphone aligns correctly with its corresponding tab or slot.

A visual shows the new microphone being carefully inserted into the front of the unit, ensuring proper alignment.

Step 7: Connect Ribbon Cable

From the rear of the unit, pull the flat ribbon cable to its connector on the circuit board and insert it securely.

A hand is shown pulling the ribbon cable from the rear to connect it to the appropriate connector on the circuit board.

Step 8: Secure Ribbon Cable

After the ribbon cable is inserted and correctly aligned, close the black retaining tabs using a screwdriver to secure it. Gently pull the ribbon cable to confirm it is firmly fastened.

A screwdriver is used to close the black retaining tabs on the ribbon cable connector, securing the connection. A slight tug on the cable confirms its secure fastening.

Step 9: Reassemble Plate and Cover

Ensure the plate is securely in place. Tighten the three screws that were previously removed. Finally, replace the rear cover of the unit.

Visuals show the three screws being tightened to secure the plate, followed by the rear cover being reattached to the unit.

Step 10: Check Grille Mesh

Before reattaching the amplifier to the main plate, verify that the metal mesh for the grille is correctly positioned.

An image illustrates the correct placement of the metal mesh within the grille area before the amplifier is reinstalled.

Step 11: Reinstall Amplifier and Connectors

Replace the amplifier onto the plate. Reattach the clamps and screw them in using the hexagon sockets. Reconnect all flexible hoses and connectors to their original positions.

Images show the amplifier being placed back onto the mounting plate, the clamps being resecured with hexagonal sockets, and the flexible hoses and connectors being reconnected to their respective ports.

For further assistance or product information, visit the Fermax support portal: Fermax Support.

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