Bibulgomme Posted November 19, 2020 Share Posted November 19, 2020 (edited) Hi, In my Ferret, i have a intercom Clansman with new install CBF (commander box fixed) and a CPU (commander personal unit 5820-99-117-4349) connected with a 10pin cable. The Commanders 10pt cable was broken also I have repaired this pin to pin (A2A; .B2B;..........; K2K;J2J) Its a picture of my CPU--> When i connect all, it s OK , I have a 500mA of consumption in circuit, no problem when i turn a CPU's monitor switch or CPU's radio selector .But I have a short circuit fault when i use the press to talk button of CPU. (I have already burnt 2 fuses) Now for test, I use a laboratory power supply with Amp regulation. I have make a another test with a new CBF but I have a same fault. I don't understand the breakdown. Does somebody have an idea? Thanks Edited December 26, 2020 by Bibulgomme Quote Link to comment Share on other sites More sharing options...
Bibulgomme Posted November 20, 2020 Author Share Posted November 20, 2020 Which could be help me is a wiring plan for the commander's cable and a wiring diagram of CPU and of CBF. If a member of the HMVF had this in their hat it would be good luck for me Quote Link to comment Share on other sites More sharing options...
Bibulgomme Posted November 20, 2020 Author Share Posted November 20, 2020 (edited) Today ,I continue my investigations with an many electrical mesures and control to determine a basic wiring diagram FOR UNIT PERSONAL COMMANDER 5820 99 117 4349 Mesures and control on CPU: (radio selector= RIC,RA,RB,RC and monitor switch O or Ø) Side Connector 7pt-F Audio Connector 10pt-M Commander Aa Intercom microphone +VE Ba Intercom microphone –VE Ec Da Left earphone Bc Ea Earphone and PTT ground (if RIC=Kc; if RA=KcJc ;if RB=KcAc ; if RC=KcJcAc)+IfØ=Cc Fa PTT when 1600ohm to ground NON Connected Ga Right earphone ifO=Bc ifØ=Dc Hypothèse déduites: Connecteur 10 pt-M commander Ac Bc left erphone Cc = K ifØ Dc Ec Intercom microphone – VE Fc Gc Hc if Press TT =Kc+Bc ifØ Jc(10) Kc(12) Connecteur 10 pt-M box fixed Ab Bb A set micro +ve Cb Db Eb Fb Gb Hb +28 supply Jb Kb Earth what I understand, when I press a PTT of CPU i make i short circuit betwen H and K of CBF. Now, it seems that the CPU is not compatible with my CBF or I am not good cable, perhaps it s nebessary a twisted cable. do you think there are two CPU systems? Or twisted cable? Edited November 20, 2020 by Bibulgomme Quote Link to comment Share on other sites More sharing options...
Foxtrott363 Posted November 21, 2020 Share Posted November 21, 2020 Hi, your CPU doesn't seem to be a standard issue one. I had some issues a year ago with a new IB2. When I pressed the over-ride button, the fuse blown off. The reason was two changed cables in the IB2, which were soldered to the wrong position. I can send you the EMER with the circuit diagram for all Intercom Boxes, if you send me your mail adress as a PM. Quote Link to comment Share on other sites More sharing options...
Bibulgomme Posted December 26, 2020 Author Share Posted December 26, 2020 (edited) Hi, happy end of year holidays everyone. with Foxtrott363 and other friend help's, I understand the problem origine. I use now a CPU n°5820-99-117-5043 (no ANR) for two radios In the L807 mod inst No16 the are a Note: The CPU (ANR) should only used with a CBF (ANR) or CBF (D) (ANR). Use with CBF or CBF(D) Will cause damage to the harness. The major difference between CBF (black) and CBF (ANR) is H pin fonction to 10 pt plug In a wiring diagram with no (ANR) CBF and CPU , the H pin is in the 0V Then when I have should use my CPU (no ANR) in my CBF (ANR), I make a nice short-circuit with the H pin. My soluce was to transform my CPU no ANR to CPU ANR. then my first modification has been the wiring diagram n°3 below the winring diagram n°2 below is a cabling observed. This modification (digram n°3) run but after talking about it with a clansman specialist. The ANR micro dont like a 24V and it must be run with 12-13V supply only. Then it's necessary to make a 12 power supply regulator in between H ans C pin. H=18/24V C=12/13V In the CPU (ANR) wiring diagram above, the 13v regulator is in the red circle but it's 1980's electronic. I replace this by a L7812 regulator with 2 diode 1N4447 for add 2x0.6V and 1x C1 100nF. yelow paint in the button Control and test for validation with labo supply in In Volt regulation. 13.2 V between C pin and B pin of 7PT plug headset all is OK good work. There are a low current, only 200mA Thank you again for the help of Foxtrott363 and Clive without whom I would not have found a soluce. I hope my research will be useful to other users Regards, Edited December 28, 2020 by Bibulgomme 1 Quote Link to comment Share on other sites More sharing options...
andym Posted December 28, 2020 Share Posted December 28, 2020 Thanks, that's useful to know! Andy Quote Link to comment Share on other sites More sharing options...
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