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REPLACEMENT INSTRUCTIONS CAPACITOR INSTALLATION KIT OP05-143 AT-1575 ANTENNA COUPLER PCB These instructions cover how to replace the PCB of AT-1575 antenna coupler for the SSB Radio Telephone FS-1575. Note: Check the PCB version before replacement. The replacement board should be ordered before proceeding with these instructions.
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Clamp3 Protection Coaxial Cable plate Fig.2: Inside of the AT-1575 (Before replacement of the board) Check the version of the Board. Disconnect the wires from TB5. Unfasten the screw on TB4 (M4x6), then disconnect the shield cable. Unfasten the washer head screws (M3x12), then remove clamp4.
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Clamp3 Hex-nut 13. Use a cutter to remove the double-sided tape on Clamp 3, then remove the clamp. 14. Unfasten the hex-nut with a spanner. 15. Fix the new clamp to the location indicated in the figure below. Use the double-sided tape attached to the clamp to secure the clamp in place.
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Clamp3 Coaxial Cable plate Fig.3: Inside of the AT-1575 (After replacement of the board) Connect the cables to J1 and J2. Referring to the above figure, secure the cables with their cable clamps. Connect the transmission cable to TB3 with the screw (M4x6).
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Fasten wire assembly (Type AF, supplied) to the fixing plate with the supplied washer head screw. Recommended fastening torque is 1.2Nm Wire assembly (Type AF) Washer head screw Check the gasket is engaged to the posts on the casing then fasten the cover with the pan head screws (M4x14, 8 pcs.).