Kyocera KM 2540 error code C7400

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  • aborad
    Technician
    • Aug 2011
    • 61
    #1

    [Error Code] Kyocera KM 2540 error code C7400

    please help me to resolve C7400 error in Kyocera KM 2540 Printer.

    in manuals its showing to refix connector so i have tried with that also replaced Developing unit but problem not resolved.

    please help to resolve this error.
    Tags: 400, code, error, km8030, kmc3232, kyocera, manuals, printer, unit
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22999
      #2
      Re: Kyocera KM 2540 error code C7400

      You can pin out the harness from the developing unit PWB to YC1 on the engine PWB. I'd say the chances are pretty slim that you'll find the problem there.

      You'll probably end up changing the engine PWB. =^..^=
      If you'd like a serious answer to your request:
      1) demonstrate that you've read the manual
      2) demonstrate that you made some attempt to fix it.
      3) if you're going to ask about jams include the jam code.
      4) if you're going to ask about an error code include the error code.
      5) You are the person onsite. Only you can make observations.

      blackcat: Master Of The Obvious =^..^=

        Comment

        • aborad
          Technician
          • Aug 2011
          • 61
          #3
          Re: Kyocera KM 2540 error code C7400

          thanks BlackCat.. harness pins connectivity is fine... now may be problem is in Engine PWB.. can u please give me part no. for the engine PWB.

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22999
              #4
              Re: Kyocera KM 2540 error code C7400

              The Copystar number is: 302JB94080

              I am 95% sure that the PWB is the same used on both Copystar & KyoceraMita, only the OEM purchaser is set differently. Simulation U265 set to "2" for KM, set to "66" for Copystar, (there are other less common like Utax, but I don't know those). =^..^=
              If you'd like a serious answer to your request:
              1) demonstrate that you've read the manual
              2) demonstrate that you made some attempt to fix it.
              3) if you're going to ask about jams include the jam code.
              4) if you're going to ask about an error code include the error code.
              5) You are the person onsite. Only you can make observations.

              blackcat: Master Of The Obvious =^..^=

                Comment

                • aborad
                  Technician
                  • Aug 2011
                  • 61
                  #5
                  Re: Kyocera KM 2540 error code C7400

                  thanks blackcat. i regularly visit your thread and i m impressed the way you reply to people..once again thanks a lot..

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22999
                      #6
                      Re: Kyocera KM 2540 error code C7400

                      I'm glad to help. =^..^=
                      If you'd like a serious answer to your request:
                      1) demonstrate that you've read the manual
                      2) demonstrate that you made some attempt to fix it.
                      3) if you're going to ask about jams include the jam code.
                      4) if you're going to ask about an error code include the error code.
                      5) You are the person onsite. Only you can make observations.

                      blackcat: Master Of The Obvious =^..^=

                        Comment

                        • aborad
                          Technician
                          • Aug 2011
                          • 61
                          #7
                          Re: Kyocera KM 2540 error code C7400

                          i have replaced Engine PCB even though not able to resolve problem.. i have notice that Developer no. is not showing in maintenance mode.
                          please help.

                            Comment

                            • blackcat4866
                              Master Of The Obvious

                              Site Contributor
                              10,000+ Posts
                              • Jul 2007
                              • 22999
                              #8
                              Re: Kyocera KM 2540 error code C7400

                              Have you re-loaded firmware after the board replacement? New boards rarely have current/compatible firmware.
                              Is the developing unit you installed the correct type? Check the part number to be sure. =^..^=
                              If you'd like a serious answer to your request:
                              1) demonstrate that you've read the manual
                              2) demonstrate that you made some attempt to fix it.
                              3) if you're going to ask about jams include the jam code.
                              4) if you're going to ask about an error code include the error code.
                              5) You are the person onsite. Only you can make observations.

                              blackcat: Master Of The Obvious =^..^=

                                Comment

                                • aborad
                                  Technician
                                  • Aug 2011
                                  • 61
                                  #9
                                  Re: Kyocera KM 2540 error code C7400

                                  i have not re-load firmware.. i don't have firmware.. if you can provide me then i will be thankful to you.

                                    Comment

                                    • blackcat4866
                                      Master Of The Obvious

                                      Site Contributor
                                      10,000+ Posts
                                      • Jul 2007
                                      • 22999
                                      #10
                                      Re: Kyocera KM 2540 error code C7400

                                      I do not provide firmware, but maybe Paul can help: Just Manuals ~ The Internet's largest selection of manuals ~ Instant Downloads > Chat
                                      =^..^=
                                      If you'd like a serious answer to your request:
                                      1) demonstrate that you've read the manual
                                      2) demonstrate that you made some attempt to fix it.
                                      3) if you're going to ask about jams include the jam code.
                                      4) if you're going to ask about an error code include the error code.
                                      5) You are the person onsite. Only you can make observations.

                                      blackcat: Master Of The Obvious =^..^=

                                        Comment

                                        • aborad
                                          Technician
                                          • Aug 2011
                                          • 61
                                          #11
                                          Re: Kyocera KM 2540 error code C7400

                                          Hi... finally problem solved by replacing Power Supply (SMPS)..


                                          thanks for help me..

                                            Comment

                                            • blackcat4866
                                              Master Of The Obvious

                                              Site Contributor
                                              10,000+ Posts
                                              • Jul 2007
                                              • 22999
                                              #12
                                              Re: Kyocera KM 2540 error code C7400

                                              Thanks for posting back. Maybe this can help someone else. =^..^=
                                              If you'd like a serious answer to your request:
                                              1) demonstrate that you've read the manual
                                              2) demonstrate that you made some attempt to fix it.
                                              3) if you're going to ask about jams include the jam code.
                                              4) if you're going to ask about an error code include the error code.
                                              5) You are the person onsite. Only you can make observations.

                                              blackcat: Master Of The Obvious =^..^=

                                                Comment

                                                • habik
                                                  Service Manager

                                                  Site Contributor
                                                  1,000+ Posts
                                                  • Apr 2010
                                                  • 2013
                                                  #13
                                                  Re: Kyocera KM 2540 error code C7400

                                                  OEM destionation code is

                                                  Olivetti - 12
                                                  Utax - 11
                                                  KM - 2

                                                  in case someone is in need.

                                                  Cheers
                                                  Habik
                                                  .OK Google! ... will I need Berrocca this morning?
                                                  Firmwares HERE

                                                    Comment

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