[ICOM] HOW TO INSTALL FL-32A INTO IC-735???

[Gary Fiber]

Ok follow these instructions, you do know it solders in I suspect.

The board flips over towards the front of the radio when you are done 
with the instructions below.

Looking at the bottom board remove all the screws that hold it into the 
radio.

Look over the cables closely, take a number of good resolution photos or 
make a drawing you understand as you remove the cables...NOT all need be 
removed.

Now gently pick up on the end of the board nearest the front panel about 
1/4 to 1/2 inch and start gently " walking" the board side to side over 
the front chassis lip. LOOK for any cables getting tight and disconnect 
those. Any multi pin cables jot down one ends wire color as some you can 
install backwards.

You need to move the board towards the front enough to Clear the rear 
panel connectors from the rear panel and rear chassis lip. Again remove 
only the cables that are getting tight impeding you doing that and 
DOCUMENT their placement. None need be unsoldered either.

Once you feel you have the clearance try flipping the circuit board 
towards the radio front, again paying attention to any tight cables or 
those in the way of doing that. The circuit board WILL NOT lay flat once 
it is flipped but it will be flat enough for you to solder in the FL-32A 
filter. Make sure to cut the excess leads off when you are done soldering.

Reverse the procedure to reassemble the radio, starting with getting the 
board flipped back over and the rear panel connectors back through the 
rear panel, again by lifting on the now front of the main board. Get the 
board in place, making sure you reinstalled any cables that you might 
not be able to once the board is secured.

Look at you photo or drawing and reconnect the cables you removed. Be 
careful with the multi pin cables as it is easy to install them one pin 
off at times. Make sure any cables you removed are reinstalled and the 
circuit board screws are tight. Replace the radio covers and you should 
be good to go. I seem to remember a switch under the trap door on the 
radio face to enable the filter which should only work when in CW mode.

Hope this gets you through the install, takes about 30 minutes on the 
first one. Take your time.

Gary K8IZ


On 1/7/2017 9:48 AM, Ed - K9EW wrote:
> I found an FL-32A filter for my IC-735, but need some instructions for
> installing it.
>
> Is there an Installation sheet?  The User's Manual and the Service Manual
> show where it goes, but not how to get to the back side of the Main Board
> to do the soldering.
>
> Any help would be appreciated.
>
> 73,
> ed - k9ew
> ----
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-- 
Gary Fiber K8IZ


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