Canon EF 500mm f4 is usm wire order under lens mount

Discussion in 'Technical Troubleshooting' started by Sacha, Mar 6, 2024.

  1. Sacha

    Sacha New Member

    Joined:
    Mar 6, 2024
    Messages:
    4
    Equipment:
    Canon r6
    Canon EF 500mm f4 is usm
    Canon RF 100 500mm
    Canon EF 65mm f2.8
    Etc
    Hey all,
    The screws of the lens mount of my 500mm got lose a couple of times. Last time it happened some wires connecting the lens mount to the AF system got detached. I would like to weld them back but don't have the original color order.
    All wires seems to be of a different color. Does someone have a picture of or the manual to weld them back like before?
    I will post pictures later as I am on holiday and I secured it for the trip back.

    Thanks for any help!

    Sacha
     

  2. Sacha

    Sacha New Member

    Joined:
    Mar 6, 2024
    Messages:
    4
    Equipment:
    Canon r6
    Canon EF 500mm f4 is usm
    Canon RF 100 500mm
    Canon EF 65mm f2.8
    Etc
    Here are the pictures. Anyone owning that model could take a picture of the order of the wires, that would help a million! Couldn't find the electronic plan on the Internet, and unmounting the whole lens scares me it would ruin its water proof capacity.
    Thank you kindly to the community for any help for my old dinosaur lens!
    Sacha
     

    Attached Files:

  3. Sacha

    Sacha New Member

    Joined:
    Mar 6, 2024
    Messages:
    4
    Equipment:
    Canon r6
    Canon EF 500mm f4 is usm
    Canon RF 100 500mm
    Canon EF 65mm f2.8
    Etc
    Could anyone with that same lens just unmount the lens mount and take a picture of the order of the wires? That'd help enormously! Sacha
     
  4. johnsey

    johnsey Site Moderator Staff Member Site Supporter

    Joined:
    Apr 21, 2017
    Messages:
    2,215
    Location:
    Fargo, ND
    Equipment:
    5dMk4, 5dsR, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, TS-E 24mm 3.5L II, Rokinon 14mm 2.8; Pixma Pro-100
    Im sure someone has the lens, just need to have them see the post :)
     
  5. Sacha

    Sacha New Member

    Joined:
    Mar 6, 2024
    Messages:
    4
    Equipment:
    Canon r6
    Canon EF 500mm f4 is usm
    Canon RF 100 500mm
    Canon EF 65mm f2.8
    Etc
    Thanks, let's hope =)
     

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