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ICOM IC-756 Expand TX Frequency [message #3063] Tue, 03 March 2015 11:36
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Registered: December 2004
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Notice: ICOM can not guarantee specification when expand frequency. How to change full cover transmit: Remove the W805 jumper chip on MAIN unit by soldering iron. Jumpers matrix located near IC803.

What to do:
Remove bottom cover of IC-756. On MAIN unit board you will see IF filters and daughter board (DSP filter) on the right side. W805 jumper and IC803 chip located under DSP board. You have to remove DSP board (get it up careful) and look for IC803 and line of jumpers (little green bugs). When it done, unsolder W805 jumper. Install DSP board and bottom cover back.

                     ---------------
         [W801]     |               |
         [W802]     |               |
         [W803]     |    IC 803     |
         [W804]     |               |
REMOVE==>[W805]     |     CHIP      |
         [W806]     |               |
         [W807]      ---------------
         [W808]


This info are from ICOM SERVICE INFORMATION sheet.
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