Bizhub Press C8000 C-C101

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  • Choclit007
    Technician

    50+ Posts
    • Oct 2010
    • 58
    #1

    [Error Code] Bizhub Press C8000 C-C101

    C8000 / V60-ish fw / 4M+ copies

    I need some help troubleshooting code C-C101 no response from PRCB to OACB.
    The code occurred while the customer was using the machine not during or immediately after servicing.

    I have replaced the OACB & PRCB simultaneously after checking the OACB to PRCB wire harness for continuity & checking for shorts to ground (per KM resolution).
    I have looked at other exposed harnesses as best possible too.

    I reflashed fw except for PRCB - there is no power on any of the power pins so that one fails.
    (Both ADU & Process carriage were pulled out / disconnected to eliminate them as points of failure)

    The service manual is not clear on whether or not the PRCB should have 5V ( or other V's) before SW2 turns on but SW2 (which connects to the PRCB) does initiate the startup process.
    OACB (& the other boards on the left side) are getting 5V from DCPS/1 but no Voltages are detected that go to the PRCB power pins.

    My question is: should there be any Voltages on the PRCB power pins (CN131 & 132 on the right side) when the main switch is on but sub switch SW2 still off.
    If there should be then I will assume a DCPS/1 issue. (I am currently trying to locate a DCPS/1 to test.)
    Tags: c101, c8000, dcps, oacb, prcb
    • tulintron
      Senior Tech

      Site Contributor
      500+ Posts
      • Jul 2014
      • 651
      #2
      Re: Bizhub Press C8000 C-C101

      Originally posted by Choclit007
      C8000 / V60-ish fw / 4M+ copies

      I need some help troubleshooting code C-C101 no response from PRCB to OACB.
      The code occurred while the customer was using the machine not during or immediately after servicing.

      I have replaced the OACB & PRCB simultaneously after checking the OACB to PRCB wire harness for continuity & checking for shorts to ground (per KM resolution).
      I have looked at other exposed harnesses as best possible too.

      I reflashed fw except for PRCB - there is no power on any of the power pins so that one fails.
      (Both ADU & Process carriage were pulled out / disconnected to eliminate them as points of failure)

      The service manual is not clear on whether or not the PRCB should have 5V ( or other V's) before SW2 turns on but SW2 (which connects to the PRCB) does initiate the startup process.
      OACB (& the other boards on the left side) are getting 5V from DCPS/1 but no Voltages are detected that go to the PRCB power pins.

      My question is: should there be any Voltages on the PRCB power pins (CN131 & 132 on the right side) when the main switch is on but sub switch SW2 still off.
      If there should be then I will assume a DCPS/1 issue. (I am currently trying to locate a DCPS/1 to test.)
      Check on PRCB if icp 23 is broken. He is responsible for the 5 Volt line at PRCB. If ok, check voltage on DCPS sources
      https://www.copytechnet.com/images/smilies/cool.pngNada como dia após diahttps://www.copytechnet.com/images/smilies/cool.png

        Comment

        • Walterj
          KONICA MINOLTA

          50+ Posts
          • Jun 2017
          • 89
          #3
          Re: Bizhub Press C8000 C-C101

          C8000_connection_between_OACB_and_PRCB_wiring.jpg
          Originally posted by Choclit007
          C8000 / V60-ish fw / 4M+ copies

          I need some help troubleshooting code C-C101 no response from PRCB to OACB.
          The code occurred while the customer was using the machine not during or immediately after servicing.

          I have replaced the OACB & PRCB simultaneously after checking the OACB to PRCB wire harness for continuity & checking for shorts to ground (per KM resolution).
          I have looked at other exposed harnesses as best possible too.

          I reflashed fw except for PRCB - there is no power on any of the power pins so that one fails.
          (Both ADU & Process carriage were pulled out / disconnected to eliminate them as points of failure)

          The service manual is not clear on whether or not the PRCB should have 5V ( or other V's) before SW2 turns on but SW2 (which connects to the PRCB) does initiate the startup process.
          OACB (& the other boards on the left side) are getting 5V from DCPS/1 but no Voltages are detected that go to the PRCB power pins.

          My question is: should there be any Voltages on the PRCB power pins (CN131 & 132 on the right side) when the main switch is on but sub switch SW2 still off.
          If there should be then I will assume a DCPS/1 issue. (I am currently trying to locate a DCPS/1 to test.)


          Good Day
          Dear
          I hope this helps
          1. Check the connection of CN130 (Printer control board) and CN215 (Overall control board) and wiring between the connectors. If any problem is found, correct it.
          2. Check ICP23 on the Printer control board to see if it is OPEN. If so, replace the problem board.
          3. If the cause could not be specified by the above steps, replace the parts in the following order.
          Printer control board
          Overall control board

            Comment

            • Choclit007
              Technician

              50+ Posts
              • Oct 2010
              • 58
              #4
              Re: Bizhub Press C8000 C-C101

              ICP23 is good - there is no voltage to blow it

              Harness was checked for continuity & shorts
              OACB & PRCB have been replaced

              There is no voltage on the DCPS/1 power connectors for PRCB

              KM tech support called yest to say they had an old resolution where HV/2 caused this code.
              I'm looking at that now but HV/2 gets power from DCPS/4.
              Going to try unplugging other boards to see if PRCB will power up.

                Comment

                • Choclit007
                  Technician

                  50+ Posts
                  • Oct 2010
                  • 58
                  #5
                  Re: Bizhub Press C8000 C-C101

                  No results from unplugging power connections that do not go to PRCB or OACB.
                  Ordered Power board & now PRCB lights up & copier boots to ready.

                  Now I get jam code J1709 - after initial investigation it looks like the loop rollers are not turning.
                  Might have CBD issue maybe blown ICP's. All the sensors test good.

                    Comment

                    • Choclit007
                      Technician

                      50+ Posts
                      • Oct 2010
                      • 58
                      #6
                      Re: Bizhub Press C8000 C-C101

                      Solution: replacement DCPS/1 restored power to PRCB eliminating that code. Then had to replace Conveyance Drive Board because Loop & Reg rollers would not turn on. Also getting a scanner home sensor code not caused by the PRCB (because I tested 2 diff boards). The customer does not care about fixing that so the ADF cables are unplugged & Machine is now able to print.

                      So appears that 2+ boards went at the same time.

                      Post Repair Comments:
                      PRCB shows no Voltage on the 2 power connectors while SW2 is off & Main SW is on.
                      There is 5V on the SW2 connector on the PRCB though.

                        Comment

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