DF-780 giving me intermittent C8350

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  • blackcat4866
    Master Of The Obvious

    Site Contributor
    10,000+ Posts
    • Jul 2007
    • 22999
    #1

    DF-780 giving me intermittent C8350

    This TASKalfa CS-250ci ran fine for the first three weeks, until I installed the 1000 sheet finisher.

    About once a week I get a call for "Finisher out if order". This last visit I pulled off the covers & tried to get it to pull the code. The motor that lifts the upper eject rollers is unstoppable, and my fingertips are raw from failing to stop the drive. The roller sensor changes state when it should.

    The firmware is at version 3.04 combined/1.02 options. My only recourse right now is to move all the outputs away from the finisher tray.

    Has anyone had the C8350 codes? And what did you find? =^..^=
    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 =^..^=
    Tags: act, c8350, codes, copyi, covers, df780, finisher, intermittent, jamming, lef, pulled, shee, word
    • charly
      Technician

      50+ Posts
      • Feb 2009
      • 65
      #2
      have you service manual?
      rare trouble the eject motor

        Comment

        • Raymondd
          Service Manager

          100+ Posts
          • Jan 2008
          • 108
          #3
          Blackcat,
          Here is what the manual says... I know there was new firmware for the 500ci this AM, not sure about the 250ci though...





          C8350 Centerfold side registration motor 1
          problem (optional center-folding unit
          of 3000-sheet document finisher)
          The home position is not detected when
          initial operation even if 1 s passed.
          Poor contact in the
          connector terminals.
          Check the connection of connector YC7 on
          the centerfold main PWB and the connector
          of centerfold side registration motor 1, and
          the continuity across the connector terminals.
          Repair or replace if necessary.
          Defective centerfold
          side registration
          motor 1.
          Replace centerfold side registration motor 1.
          Defective PWB. Replace the centerfold main PWB or finisher
          main PWB and check for correct operation.
          Roller motor problem (optional document
          finisher)
          The roller sensor does not turn on/off
          within specified time of the roller motor
          turning on.
          The roller sensor,
          roller motor connector
          makes poor
          contact.
          Reinsert the connector. Also check for continuity
          within the connector cable. If none,
          remedy or replace the cable.
          Defective roller
          sensor.
          Replace the roller sensor.
          Defective roller
          motor.
          Replace the roller motor.
          Defective finisher
          main PWB.
          Replace the finisher main PWB and check
          for correct operation.

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22999
              #4
              Yeah, I read that too.
              The new firmware bulletin makes no mention of C8350, but does have updated firmware for the DF-780. It's version 3.05 combined/1.03 options. I'll be trying it out on the next visit.

              Thanks all. =^..^=
              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

                • BeardyBloke
                  Junior Member
                  • Mar 2009
                  • 7
                  #5
                  C8350 0n DF780

                  Hi
                  I have a dealer with this problem too, even on V4 firmware. It crops up once or twice a week - I'm still investigating, but I will let you know any findings.
                  Regards

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22999
                      #6
                      No re-occurrences since firmware v. 3.05/1.03

                      Since March 2009 firmware has now reached v. 5.00 with some important fixes included. I would get 5.0 loaded. The rumor is that there is a v. 6.0 in the near future.

                      Initially, I had a theory that my users (being very anxious) were pulling the exiting pages out of the rollers, possibly causing this condition. I tried yanking out the paper, removing incomplete sets to be stapled, and popping covers open during copying, and could not get a code. I could jam it, but no code.
                      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

                        • texchar555
                          Senior Production Tech

                          100+ Posts
                          • Mar 2007
                          • 142
                          #7
                          to all the tech out there. make sure the mylar tabs on the side paper guides are not in the way of the black gate . The rear one is to large you have to cut the mylar so as to not hamper the black gate from open and closing.

                            Comment

                            • techpro
                              Technician
                              • Feb 2010
                              • 22
                              #8
                              Blackcat did you ever find the cause of this problem you had? I ask because I'm also running into a ton of J-81 and 82 codes once the 1000 sheet finisher gets installed. Machine had NO jamming problems until the finisher got installed. I have 3 new ta-400ci's doing this. Any word on your findings? thx

                                Comment

                                • blackcat4866
                                  Master Of The Obvious

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2007
                                  • 22999
                                  #9
                                  The firmware solved most of it. There are still more-than-average number of J81 & J82's, but I haven't pinned it down to anything specific.

                                  There is one side effect. My customer feels the need to remove the clear vertical path guide and put it in a drawer nearby. When I re-install the guide the J81 & J82's go away. I don't know why they fiddle with it. Flapping my jaw hasn't made any difference. It's always hidden in the same place (thank goodness), or I'd have to charge them for a replacement. =^..^=
                                  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

                                    • techpro
                                      Technician
                                      • Feb 2010
                                      • 22
                                      #10
                                      Thanks for the update. I had one of my techs do the complete and option firmware thinking that might help. I hope it does, I will also pass the info along about the clear guide. If that was happening on an on going basis, where they pull the guide off I would start billing them for your time to go reinstall. That will sort itself out real fast! lol Thx

                                        Comment

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