Feeding problems on a AR 620

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  • vincent64
    Trusted Tech

    250+ Posts
    • Feb 2008
    • 382
    #1

    Feeding problems on a AR 620

    Hey ya'll, I have a intersting one, I think I know the cause and fix for the problem, but want someone else thoughts on this also.
    Mach is a AR-620 and its misfeeding from the MFT and the #2 tray of the tandom cass, the big one on top.
    I seem to recall from the class I took some time back, its been at least 6 years now I think.
    There was talk of this problem, and a clutch that would cause it.
    Is it a clutch in that big drive frame on the back, or is there a clutch near it I am not seeing on the parts diagram.
    There are 4 clutches in that frame, 2 feed and 2 transport.
    Machine has over 1.2 mil on it now and used pretty heavy at a school.
    Any ideas?
    Tags: 620, bypass tray, comming, creased, feeding, feeding problems, ops, pulled, tray2, wrong
    • bilyahn
      Service Manager

      1,000+ Posts
      • Dec 2006
      • 1462
      #2
      The clutch that they were talking about at school is the long white spring clutch located on the shaft for the seperation roller. There is a modification for a different shaft and clutch. Have only had to replace a couple of these in our ARM620's and have several machines that are over 2 million.

      Hope this was helpful.

      Good luck.

      Bil

        Comment

        • vincent64
          Trusted Tech

          250+ Posts
          • Feb 2008
          • 382
          #3
          If just the #2 tray was misfeeding I would think of that too, but with the MFT also and the paper stops just past the point where the paper from the tray starts into the paper path, I was thinking it may have been a paper feed clutch in the back, or some transport clutch.

            Comment

            • ZOOTECH
              Senior member of CRS

              Site Contributor
              2,500+ Posts
              • Jul 2007
              • 3383
              #4
              What jam codes are you getting? Wazza gave a tip awhile back that the interface pass unit 2 (PGIDM2038FCZ1) could be at fault.
              "You can't trust your eyes, if your mind is out of focus" --

                Comment

                • vincent64
                  Trusted Tech

                  250+ Posts
                  • Feb 2008
                  • 382
                  #5
                  Sorry guys, I did not get the jam codes, I was just checking to see if paper would stop going through the MFT, and it did, I was thinking clutch, or so a instructor told us at a sharp school when they used to have them in Dallas.
                  This machine sets in a teachers work/break room, and not a big one at that, I went to see if after someone else and I got there durring lunch for the teachers, and I thought a lunch room full of students could be noisy, 6 or 7 teachers got them beat.
                  I am going to try the torque limiter first, and see what happens.

                    Comment

                    • OMD-227
                      #6
                      Sorry guys, on holidays @ the moment, haven't checked posts in a while..... (enjoying the warm Aussie summer)

                      Yes, please get us the jam codes! That tells us everything. As Zootech said, there is a bulletin on the interface pass unit. I'd bet that is your problem. I've seen alot of them.
                      You will either have intermittant driving of the one-way gears, sensors slow in responding or not responding at all, or incorrect timing of the MFPD2 sensor. There are new springs/sensors with increased tension in the interface unit. I've even seen sensor actuating arms so worn down, they hardly moved as the paper passed over them.
                      If your PF roller sets are good in those trays, and it is a heavy use machine, I'm almost certain your issue is in the interface pass unit.

                      (I could be wrong... I'm on the other side of the world, so I can't exactly see it, but experience tells me its the Interface Pass unit).

                        Comment

                        • blackcat4866
                          Master Of The Obvious

                          Site Contributor
                          10,000+ Posts
                          • Jul 2007
                          • 22880
                          #7
                          If your codes are MPFD1_S and MPFD_NM for the bypass, and MPRD_N2 for tray #2, I've seen something like this.

                          It was at a Red Cross office, and the customer was running some sort of pre-printed coated poster stock from the bypass. I don't know what kind of coating it was, but it came off on the bypass rollers, all the various transport rollers, the registration rollers, and took out the fuser rollers. I didn't make the connection with the poster stock the first call, and got to repeat the exact same call the next day. The waxy stuff cleaned off the various rubber rollers with Limolene (orange oil cleaner), but the fuser was trashed, twice in two days. =^..^=
                          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

                            • BrazilBoy
                              #8
                              With Bypass tray misfeeds, I pulled the unit off..Look inside the copier on the rear frame you will see a spring loaded tension gear that drives the Bypass reg rollers..Remove the tray1/2 unit to access from underneath..

                              I adjusted spring tension and she was fine..I have done this many times for bypass misfeeds with much success..Especially in schools where they run all sorts of junk through the bypass..

                                Comment

                                • vincent64
                                  Trusted Tech

                                  250+ Posts
                                  • Feb 2008
                                  • 382
                                  #9
                                  I tried that mod. in the Sharp tech built. did not help any, it still wants to misfeed or multi-feed there, comming out of tandom tray #2. the only jam code it gives is TRAY2, I am not worried about the bypass, as they dont use it much if at all, the way the machine is located I dont think they can even get to it that easy.
                                  It seems it wants to try to feed out of the tray, and only go so far and stall, like transport rollers are not pulling it on.

                                    Comment

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