KM-4050 Jam after pickup from tray 2 with code J018

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  • kathyde
    Technician
    • Nov 2011
    • 12
    #1

    KM-4050 Jam after pickup from tray 2 with code J018

    First trip out I found that the Feed Guide B was broken. I ordered and replaced. Seemed to resolve the issue. Then got a call that the unit was having a problem again. Replaced the fuser (damaged) and then removed a paper jam in the registration area (appeared someone tore paper there). Then, during testing, started jamming again right after it picks up from tray 2. It gets to the rollers on the lower right door (right after pickup) and then crimps the paper and throws a jam code. i swapped cassette, pickup assembly, rollers on door and springs to hold door closed. When I say swapped springs and rollers, front to rear on springs and top with bottom on rollers so I could see if it made a difference. Nope. I then went into service and tested clutches, motors and solenoids. Slight difference in sound on one motor test for feed 2, but that was about it. I've seen some references to conveyance switches being an issue, but only for EU.

    So, the door appears to be a little off kilter (if I really split hairs) but when I hold it in place, it still jams. The motor really doesn't seem to be an issue - one time a little noisy. I'm thinking the switches. Any help would be appreciated. Starting to go a little crazy on this one...or is it just because it's winter?
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22973
      #2
      Re: KM-4050 Jam after pickup from tray 2 with code J018

      I've got a record for you:

      Misfeeds (Jam J18) from trays #1, #2, and #3. Misfeeds (Jam J14) from MPT. Jams every time from all sources. Harness wire broken to pre-registration clutch FCL1. It's hard to explain the occurrence at 507K prints & six years service. Repair/solder broken wire in harness inside the middle feed unit.

      =^..^=
      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

        • copydocinc
          Trusted Tech

          Site Contributor
          250+ Posts
          • Mar 2015
          • 263
          #3
          Re: KM-4050 Jam after pickup from tray 2 with code J018

          I would double check to see if one of the paper path sensor actuator arms is now broken off(with all this jamming and removing jams, it's easy to brake them and not notice that they are now missing)
          If not, you will probably have a fun time removing the vertical feed assy to get to the clutches and gears that are on the back side of the vertical feed assy and in front of the rear frame of the machine.
          but they are attached to the vertical feed assy. A lot of stuff to take off of the machine to get it out. (front left covers, both left side doors, rear cover, drive motors, big metal bar that holds the 2 left doors, the little left side door too)
          Hope its just a broken actuator.

            Comment

            • kathyde
              Technician
              • Nov 2011
              • 12
              #4
              Re: KM-4050 Jam after pickup from tray 2 with code J018

              Originally posted by blackcat4866
              I've got a record for you:

              Misfeeds (Jam J18) from trays #1, #2, and #3. Misfeeds (Jam J14) from MPT. Jams every time from all sources. Harness wire broken to pre-registration clutch FCL1. It's hard to explain the occurrence at 507K prints & six years service. Repair/solder broken wire in harness inside the middle feed unit.

              =^..^=
              The strange thing is that it doesn't jam every time and it doesn't jam at all if I use tray 3, which right now is set to legal size. It's only with tray 2. Sometimes I can clear the paper, close the door, replace the finisher and it will pickup/feed/etc. just fine for 2-3 copies before it throws a jam.

                Comment

                • kathyde
                  Technician
                  • Nov 2011
                  • 12
                  #5
                  Re: KM-4050 Jam after pickup from tray 2 with code J018

                  Originally posted by copydocinc
                  I would double check to see if one of the paper path sensor actuator arms is now broken off(with all this jamming and removing jams, it's easy to brake them and not notice that they are now missing)
                  If not, you will probably have a fun time removing the vertical feed assy to get to the clutches and gears that are on the back side of the vertical feed assy and in front of the rear frame of the machine.
                  but they are attached to the vertical feed assy. A lot of stuff to take off of the machine to get it out. (front left covers, both left side doors, rear cover, drive motors, big metal bar that holds the 2 left doors, the little left side door too)
                  Hope its just a broken actuator.
                  No luck there - those were one of the first things I checked. I also tested the conveyance switches. The only hint of something was a very slight delay on releasing the #2 switch.

                    Comment

                    • Tonerkiller
                      Senior Tech

                      500+ Posts
                      • Oct 2012
                      • 665
                      #6
                      Re: KM-4050 Jam after pickup from tray 2 with code J018

                      Replace the vert. transport clutches. I have delt with this issue before and found this to be the solution.

                        Comment

                        • Reed
                          Senior Tech

                          Site Contributor
                          250+ Posts
                          • Feb 2011
                          • 256
                          #7
                          Re: KM-4050 Jam after pickup from tray 2 with code J018

                          I had a similar problem on an old KM 3035. It ended up being those black mylar pieces on the inner door were messed up causing jams out of tray 2. Other than that I would go with the vertical transport clutches.. and good luck with that

                            Comment

                            • genesistech
                              Technician
                              • Jan 2015
                              • 21
                              #8
                              Re: KM-4050 Jam after pickup from tray 2 with code J018

                              I had a similar issue that resulted in great disappointment. After spending hours replacing clutches and sensors, found that putting my knee on the side door for the paper feed assembly applied enough pressure for the machine to stop jamming. I'm not saying it's a fix, but it's definitely worth checking before spending countless hours with replacing parts that are difficult to get to. (And our fix was adding a shim underneath the springs so that it applied the pressure without us holding it.)

                                Comment

                                • kathyde
                                  Technician
                                  • Nov 2011
                                  • 12
                                  #9
                                  Re: KM-4050 Jam after pickup from tray 2 with code J018

                                  Originally posted by Tonerkiller
                                  Replace the vert. transport clutches. I have delt with this issue before and found this to be the solution.
                                  Thanks! Since I have never swapped these before and you said "clutches" - should I replace just the clutch associated with tray 2 or all? Another response said good luck...are these difficult to get to? How long would you say it would take - on average - to replace them?

                                    Comment

                                    • copydocinc
                                      Trusted Tech

                                      Site Contributor
                                      250+ Posts
                                      • Mar 2015
                                      • 263
                                      #10
                                      Re: KM-4050 Jam after pickup from tray 2 with code J018

                                      Originally posted by kathyde
                                      Thanks! Since I have never swapped these before and you said "clutches" - should I replace just the clutch associated with tray 2 or all? Another response said good luck...are these difficult to get to? How long would you say it would take - on average - to replace them?
                                      I gave you the readers digest version of getting to the vertical clutches by removing the vertical feed assy, in my previous reply.
                                      If you've never done it before, plan on a couple of hours at least.
                                      BUT
                                      Since you said it never jams out of drawer 3, the vertical clutches might be ok and you just need to focus on drawer 2 clutch or feed assy, which is not the same area.

                                        Comment

                                        • blackcat4866
                                          Master Of The Obvious

                                          Site Contributor
                                          10,000+ Posts
                                          • Jul 2007
                                          • 22973
                                          #11
                                          Re: KM-4050 Jam after pickup from tray 2 with code J018

                                          If it's feeding OK from tray #3, you can rule out idle roller pressure springs. Additionally the jam code would be J12 or J21:

                                          Misfeeds (Jam 12) from tray #3 (ledger). Inadequate idler roller pressure. On left door idler rollers install two pressure springs in the outer positions on each shaft (2BL06340).
                                          =^..^=
                                          Last edited by blackcat4866; 01-28-2016, 01:36 AM.
                                          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

                                            • Tonerkiller
                                              Senior Tech

                                              500+ Posts
                                              • Oct 2012
                                              • 665
                                              #12
                                              Re: KM-4050 Jam after pickup from tray 2 with code J018

                                              I would replace the vert trans clutches. If you cannot figure out where they are or what they are, have another tech go.

                                                Comment

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