bizhub 287 C6756 error code

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  • jwai
    Trusted Tech

    250+ Posts
    • May 2018
    • 497
    #1

    bizhub 287 C6756 error code

    Hi everyone,

    One bizhub 287 the exposure don't light up when the machine has been turned on, the error code C6756 display.
    Check the connection of flat cable and it seems good.

    Any suggestions?
    Tags: bizhub, c6756, code, error, flat
    • CP-1015
      Trusted Tech

      Site Contributor
      250+ Posts
      • Nov 2020
      • 285
      #2
      Re: bizhub 287 C6756 error code

      CCD Power-supply voltage malfunction

        Comment

        • jwai
          Trusted Tech

          250+ Posts
          • May 2018
          • 497
          #3
          Re: bizhub 287 C6756 error code

          Originally posted by CP-1015
          CCD Power-supply voltage malfunction
          SO I need to replace the CCD unit ?

            Comment

            • CP-1015
              Trusted Tech

              Site Contributor
              250+ Posts
              • Nov 2020
              • 285
              #4
              Re: bizhub 287 C6756 error code

              Sorry, I'm not able to send a picture with the solution.

                Comment

                • Synthohol
                  Certified Konica Expert

                  Site Contributor
                  5,000+ Posts
                  • Mar 2016
                  • 5463
                  #5
                  Re: bizhub 287 C6756 error code

                  ..........
                  Attached Files
                  We know a thing or two because we've seen a thing or two.
                  The medication helps though...

                    Comment

                    • allan
                      RTFM!!

                      5,000+ Posts
                      • Apr 2010
                      • 5445
                      #6
                      Re: bizhub 287 C6756 error code

                      Test for 5.1V and 24V on the respective pins as per the manual. PJ1 on CCDB to CN7 on the MFPB. Check on both ends or do continuity test on the harness. F8E on the MFPB is the only ICP that relates to the CCD unit i can find in the manual. So worth checking. Should be in the area surrounding the plug for CN7. If all the voltages are present grounding pin 16 LAMP_REM to pin 1 GND should turn the LED's on. If the LED's come on then MFPB does not switch it on for some reason. If the voltage are not present then DCPB not supplying it to the MFPB or there is a fault on the MFPB .

                      The error does not mention the MFPB but i don't know how the power detection that triggers C-6756 work so cant rule anything out.
                      Whatever

                        Comment

                        • tsbservice
                          Field tech

                          Site Contributor
                          5,000+ Posts
                          • May 2007
                          • 7635
                          #7
                          Re: bizhub 287 C6756 error code

                          Originally posted by Synthohol
                          ..........
                          Why my manual isn't so detailed

                          Clipboard01.jpg

                          Lol, I didn't realize that quoted ONLY dots
                          Last edited by tsbservice; 12-09-2020, 09:28 PM. Reason: Funny
                          A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                          Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                            Comment

                            • allan
                              RTFM!!

                              5,000+ Posts
                              • Apr 2010
                              • 5445
                              #8
                              Re: bizhub 287 C6756 error code

                              Ok changed my mind about switching the lamp manually. Use a pull down resistor at first if you need to like a 1Kohm resistor to limit possible current.
                              Disconnect wire for pin 16 going to MFPB first. That would be the right approach if testing that is meaningful. I would just do it by grounding pin16, bit that is me. Please keep the smoke inside.

                              Found the trouble shooting in the manual a rough guideline to follow.

                              Stuff is expensive and going there to change out parts one by one does not fly.
                              Please let us know what you find.
                              Whatever

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