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Zimo DCC info ?

Discussion in 'Electronic Repair' started by N_Cook, May 13, 2011.

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  1. N_Cook

    N_Cook Guest

    I'm an electronic engineer asked to repair a number of these DCC control
    boards
    that apparently plug into/under model train locos. I've found a few failings
    testing cold but would like to apply some power to them.
    Anyone know of "block diagram" pinning for such units or any technical info?
    Boards are 32x30mm with surface mount components , 2x4 way connector, 21 way
    conn, 5 x 2way and 1x 4w connector
     
  2. N_Cook

    N_Cook Guest

    Send them back to Zimo, I've had free repairs in the past. If you need
    to replace the PIC, where are you going to get the firmware?

    MBQ

    +++++

    Marked 2395 X002 on the overlay
    they are some sort of interface board, no PIC, only a 555 , one transistor
    and a number of diodes and passives and all those connectors. So far 2 have
    had duff lead-free soldering
     
  3. N_Cook

    N_Cook Guest

  4. Geo

    Geo Guest

    Some connections here:-
    http://www.bachmann.co.uk/pdfs/21pin_plug_wiring_diagram-1.pdf

    Are you certain it is a Zimo board?
     
  5. N_Cook

    N_Cook Guest


    Thanks for that , looks like the pinning here, maybe not Zimo.
    The owner is out of contact at the moment. There are 6 of these duff boards.
    Each in a little plastic box , and one had some blurb folded and fitting
    inside the box, that was about Zimo sound files/codes or something in
    German. Badly assembled probably by hand pick and place of components but
    mainly bad lead-free solder of pins under the 21 pin header.
     
  6. Geo

    Geo Guest

    Could be something simple to operate flashing light?
    e.g:-
    http://home.cogeco.ca/~rpaisley4/FredDCC.html
     
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