Help with Bizhub Pro C6500 not seing SD-501 and FS-503

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  • adissocool
    • Jul 2025

    #1

    [Misc] Help with Bizhub Pro C6500 not seing SD-501 and FS-503

    Hello,

    I'm kinda new to this, I'm trying to connect a Konica Minolta Bizhub C6500 to SD-501 and a FS-503 but without success, I have tried to do this both with and without the RU-503 but all the C6500 can see is the RU-503 nothing else and no error codes.

    Can anyone point me to the right direction? is there anything I'm missing in order to connect these parts? Also do I need to do any modification on the C6500's menu?

    Please help!

    p.s the parts I bought are used and I don't have installation guides, so please give as much details as possible, thanks
  • Phrag
    Trusted Tech

    250+ Posts
    • Oct 2012
    • 417

    #2
    Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

    Being a fairly unexperienced tech regarding production machines, We have had to run up a couple of them in the office here. And The senior tech here was having a similar issue. Him and I worked through the 4 or 5 different manuals before we figured out each unit (I think) needed their own power supply, rather than piggybacking off the main body power.

    On the back of the FS and SD, you might find a small plate with a screw, or even a power receptacle (similar to the ones on the backs of Power Supplies for PC's.

    I think the RU shared power with the main body, but the rest had their own supply I think.

    Comment

    • adissocool

      #3
      Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

      Originally posted by Phrag
      On the back of the FS and SD, you might find a small plate with a screw, or even a power receptacle (similar to the ones on the backs of Power Supplies for PC's.

      Thanks for your help, but I don't think power is the problem for my case, because only the SD-501 has a power outlet which I already hooked it up with a separate power supply rather than piggybacking off the main body. For the RU-503 and FS-503 none of them has a power outlets/plugs.

      Can Anyone suggest another possible solution? I'd be thankful!

      Comment

      • Mick01
        Trusted Tech

        250+ Posts
        • Nov 2012
        • 362

        #4
        Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

        Hi,
        Could be an issue with dipswitches, SD-501 ans FS-503 need to be set up differently depending on whether they are connected to a C6500 (colour) or 1050 (B&W).
        On the main board in the options there is a bank of four dipswitches. Dipswitch 2 (second from the left) needs to be up (on) for C6500.
        If this is the case the C6500 should recognise the options in service mode. You will then have to rewrite the firmware for the options.
        Hope this helps

        Comment

        • JustManuals
          Field Supervisor

          5,000+ Posts
          • Jan 2006
          • 9838

          #5
          Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

          This Parts & Service manual can now be purchased for $12.77 and downloaded immediately after payment from:


          Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


          Paul@justmanuals.com

          Comment

          • adissocool

            #6
            Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

            Originally posted by Mick01
            Hi,
            Could be an issue with dipswitches, SD-501 ans FS-503 need to be set up differently depending on whether they are connected to a C6500 (colour) or 1050 (B&W).
            On the main board in the options there is a bank of four dipswitches. Dipswitch 2 (second from the left) needs to be up (on) for C6500.
            If this is the case the C6500 should recognise the options in service mode. You will then have to rewrite the firmware for the options.
            Hope this helps
            Thanks for your suggestion, it solved part of the problem, I had to ignore the FS-503 since I only have the RU-503 not the RU-504 which is required in order to connect this finisher to the main body.

            Comment

            • Mick01
              Trusted Tech

              250+ Posts
              • Nov 2012
              • 362

              #7
              Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

              Hi,
              Happy to help.
              You are correct you do need the correct RU unit for the FS-503 to function. It has a power supply that supplies power to the FS-503. In the Australian maket we only imported the RU with the power supply for this very issue.

              Comment

              • mrwho
                Major Asshole!

                Site Contributor
                2,500+ Posts
                • Apr 2009
                • 4299

                #8
                Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

                Don't know if this will be of any help, but a firmware update or reflash is something worth trying - If the parts firmware don't match the main body firmware it can do odd things at times.
                ' "But the salesman said . . ." The salesman's an asshole!'
                Mascan42

                'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

                Ibid

                I'm just an ex-tech lurking around and spreading disinformation!

                Comment

                • bonkerz

                  #9
                  Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

                  Can you please tell me where these dipswitches are located on this machine ????

                  Originally posted by Mick01
                  Hi,
                  Could be an issue with dipswitches, SD-501 ans FS-503 need to be set up differently depending on whether they are connected to a C6500 (colour) or 1050 (B&W).
                  On the main board in the options there is a bank of four dipswitches. Dipswitch 2 (second from the left) needs to be up (on) for C6500.
                  If this is the case the C6500 should recognise the options in service mode. You will then have to rewrite the firmware for the options.
                  Hope this helps

                  Comment

                  • tulintron
                    Senior Tech

                    Site Contributor
                    500+ Posts
                    • Jul 2014
                    • 668

                    #10
                    Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

                    04 keys on the main board of the FS. With this configuration has a jump to be plugged


                    RU504 input 110V ~ 220V independent.


                    RU503 not work


                    FS503
                    1050dipsw2 off
                    6500dipsw2 on
                    https://www.copytechnet.com/images/smilies/cool.pngNada como dia após diahttps://www.copytechnet.com/images/smilies/cool.png

                    Comment

                    • methogod
                      Senior Tech

                      Site Contributor
                      500+ Posts
                      • Dec 2008
                      • 921

                      #11
                      Re: Help with Bizhub Pro C6500 not seing SD-501 and FS-503

                      Only difference between RU 503 and RU 504 is the bottom power supply


                      If have the lower half if you want to turn the 503 into a 504.

                      msg me if your interested.

                      Comment

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