[Yaesu] Wanted : FIF-232 Schematic

[Deon Erwin]

I require the schematic diagram of a Yaesu FIF-232 RS-232 interface to
connect an FT-900 to a PC.

I have the CT-62 level converter cable for the FT-100D and rewired the plug
to interface with the FT-900, but unfortunately it does not work.  (My
rewiring is correct.)  I am about to try the standard MAX-232 level
converter IC with the FT-900 and I am sure it should work.  However, I would
still like to see what was used in the FIF-232.

Your assistance will be appreciated.

Deon ZS1ZL