Furuno FAR-2107 Series Service Manual page 65

Remedy
RFC board
When IF amplifier board is 03P9335–55A/B and –66, replace the RFC board with one
having FPGA program V0023 and diodes, 1SS396. The FPGA program number is
displayed on "4. Factory Test" in Factory menu.
After replacing the RFC board, update Main and RFC program to the current versions,
V02.35 and V01.24 respectively.
IF amplifier board
When IF amplifier board is 03P9335–66, change it to the modified one which is
identified with a yellow round label. See Fig.2. S and X band radars use the same IF
amplifier board.
Fig.2 Yellow Mark on IF
Amplifier Board
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