MX5001 back half of black images greatly faded

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • copyguy1
    Trusted Tech

    100+ Posts
    • Jul 2011
    • 142

    #31
    Re: MX5001 back half of black images greatly faded

    From what I am reading, you may want to look back at the laser shutters. Sharp did have trouble with them on the mx2600 series. These are basically the same machine. Also make sure to set sim 50-10 setting a to 100 then run 50-22.

    Comment

    • Akitu
      Legendary Frost Spec Tech

      Site Contributor
      2,500+ Posts
      • Oct 2010
      • 2595

      #32
      Re: MX5001 back half of black images greatly faded

      Originally posted by Sam Tofu
      Not certain on seal. Will check later today. Earlier before this problem I had looked at the DV T.B. and had checked the machine for toner spill - not seeing any and also then since we changed developer hadn't been concerned re the seal. But at this point I will jump at any thing to check. Agency has been happy with our responsiveness and accepts that much of the issues are due to their gross negligence - so we have "some" time but very soon this is going to become a pressure point.
      I just recently fixed a 5001 with this same problem using the seal, upon examination I wasn't seeing any spilled toner or DV, however the black dev unit was almost entirely empty within a matter of 2 months the first time I went to replace it after I first started troubleshooting it. They hadn't even done 5k. Wouldn't hurt to check, and as of yet I'm still not 100% certain my own 5001 is fixed, but unfortunately it's one of those fixes you throw in the machine and just wait and see. Haha
      Cthulhu for president! Why settle for the lesser evil?

      Comment

      • Sam Tofu
        Trusted Tech

        Site Contributor
        100+ Posts
        • Dec 2007
        • 130

        #33
        Re: MX5001 back half of black images greatly faded

        Will check into this more later today. Thanks for so much support.
        BTW I have attached a scan of the clear plastic pawl like item. - you will have to look around on the 2 PDF pages
        but they are there. The one with the black background shows the 2 shafts coming off of the pawl like piece.
        I am really at a loss as to where this could go in the machine

        Here is my description from 2 days ago on the post
        One last "what is it" question...
        BTW, I will try to scan a pic of this clear plastic picker finger or pawl- like mystery piece. Not certain where it came from.Customer said forgot to tell me about it. They found it somewhere inside right side door the day the fading issue started.
        The piece looks like an oversized picker finger (in that it is much fatter and slightly larger)has two small flat shafts coming off the pawl, each with a hole at the end of both that appears to be for a small shaft to go through. It is NOT FROM FUSER. Doesn't look like pic of separator pawl for transfer belt than was shown in a T.B.
        Attached Files
        Last edited by Sam Tofu; 10-28-2011, 03:36 PM. Reason: additional details

        Comment

        • Dark Helmet
          Senior Tech

          Site Contributor
          500+ Posts
          • May 2009
          • 835

          #34
          Re: MX5001 back half of black images greatly faded

          does this machine have the big saddle stitch finisher? I think that is the little flag you have to attach to the deleivery unit exit sensor. They are known to fall out. No big deal. It will be located between the machine and the RBX paper bridge unit.
          Evil will always triumph because good is dumb.

          Comment

          • Sam Tofu
            Trusted Tech

            Site Contributor
            100+ Posts
            • Dec 2007
            • 130

            #35
            Re: MX5001 back half of black images greatly faded

            Yes has a saddle stitch.That really helps!. thank you Lawrence Never looked over there - customer said they found it when they cleared jam by fuser. I should have asked and listened more deeply to what they really said

            OK so I am going to re seat connectors on all of PCU , Hi voltage and the Primary Transfer.

            Some trepidation in that the only board repair we know for Sharp is HyTech and they only have a 4001 series
            Ambassador/Midwest only do limited Sharp repair and don't cover these items.

            I have been leaning toward the PCU yet as black cat brought out - depending upon the particular aspect/phase of this issue - it seems a case could be made for any of these three boards.

            ALSO does anyone know if black shutter is not opening will the Laser unit test still show OK. (WE did laser test the other day and it came up OK.)

            Comment

            • copyguy1
              Trusted Tech

              100+ Posts
              • Jul 2011
              • 142

              #36
              Re: MX5001 back half of black images greatly faded

              That is the exit acctuator for delivery unit when installing paper pass unit for finisher. Also on machine problem if dv is missing it probably is in waste toner container. Which is caused by seal inside dv box (tb). or by a drum that is damaged on the end AND ARCING

              Comment

              • DavePo
                Trusted Tech

                250+ Posts
                • Jul 2008
                • 303

                #37
                Re: MX5001 back half of black images greatly faded

                Originally posted by Sam Tofu
                Will check into this more later today. Thanks for so much support.
                BTW I have attached a scan of the clear plastic pawl like item. - you will have to look around on the 2 PDF pages
                but they are there. The one with the black background shows the 2 shafts coming off of the pawl like piece.
                I am really at a loss as to where this could go in the machine

                Here is my description from 2 days ago on the post
                One last "what is it" question...
                BTW, I will try to scan a pic of this clear plastic picker finger or pawl- like mystery piece. Not certain where it came from.Customer said forgot to tell me about it. They found it somewhere inside right side door the day the fading issue started.
                The piece looks like an oversized picker finger (in that it is much fatter and slightly larger)has two small flat shafts coming off the pawl, each with a hole at the end of both that appears to be for a small shaft to go through. It is NOT FROM FUSER. Doesn't look like pic of separator pawl for transfer belt than was shown in a T.B.
                Looks like the end off the paper sensor in the Exit unit. It is the one put on when you add a the paper pass unit.

                Comment

                • Sam Tofu
                  Trusted Tech

                  Site Contributor
                  100+ Posts
                  • Dec 2007
                  • 130

                  #38
                  Re: MX5001 back half of black images greatly faded

                  Thanks for help on where the piece goes. At least that is "fixed". OK here is where we are at.
                  Desperately, looking for any further clues.

                  Quick Summary and current status:
                  Sim 44-6 at this time gave us the K_HV_ERR. New Belt Unit found to be defective.
                  Warranty replacement belt unit sent to us. With new belt, still had faded issue but quickly after 1 copy then went to entire page faded and then blank copies with black.
                  Then No toner from Developer to Drum. Keep in mind swap out of Process Unit was also done. As well as a rebuild.
                  Ran Laser Test. Even taped the plastic flap that is closed in standby (one over Laser protective glass) open and tried a copy.
                  Checked and reseated board connectors.
                  Now the biggest ? as it shifts the issue in perhaps another direction is issue of 1st was OK on drum now not even on drum.
                  Is the Main Process PWB the only thing in common here?
                  Also connections, grounds in back where belt, DV and Process unit mate with machine were all checked for looseness and obstructions etc.

                  FYI: Production date May 2010. Meter from my "memory -slightly under 95K on black and just at 72K on color. We did see T.B re toner spills on DV unit. No sign of issue, errors not in logs. Also Devel was then replaced. So not thinking that is immediate issue for us. However, we will address this as well as firmware updates etc. once we can get machine back to basics.

                  Comment

                  • bilyahn
                    Service Manager

                    1,000+ Posts
                    • Dec 2006
                    • 1470

                    #39
                    Re: MX5001 back half of black images greatly faded

                    One thing since you just mentioned that you haven't updated the ROM. There is a new one from March2011 and a tentative one from May. Everytime that I've been to the Sharp schools in the last few years they "harp" on updating the ROMs as the first step in any troubleshooting process. Don't think it's relevant in this case but it appears from your statement that it hasn't been done. Current ICU Main 4.07.J2. I have a few of these units out there so am keenly interested in the solution!!

                    Good luck.

                    Bil

                    Comment

                    • Sam Tofu
                      Trusted Tech

                      Site Contributor
                      100+ Posts
                      • Dec 2007
                      • 130

                      #40
                      RESOLVED MX5001 back half of black images greatly faded

                      Sent in MC _PWB and Primary PWB for testing and possible repair.
                      MC board black circuit had several issues. Repaired.
                      Re-Installed boards ALL WORKING OK

                      So the three issues we had
                      1. Labels stuck all over the place - cleaned up replaced drum,blade, MC kit and developer
                      2. New transfer belt unit to replace one damaged by user fingernails getting labels off.(but was defective- partially cause of light copies on middle to rear of copy)
                      Warranty replacement fixed that.
                      3. Black Copies then all faded. MC -PWB repair fixed that.

                      Customer Happy. We are happy cause fixed before Thanksgiving.

                      THANKS AGAIN for everyone's attentive help on this.

                      HAPPY THANKSGIVING TO ALL

                      Comment

                      • Akitu
                        Legendary Frost Spec Tech

                        Site Contributor
                        2,500+ Posts
                        • Oct 2010
                        • 2595

                        #41
                        Re: MX5001 back half of black images greatly faded

                        Originally posted by Akitu
                        I just recently fixed a 5001 with this same problem using the seal, upon examination I wasn't seeing any spilled toner or DV, however the black dev unit was almost entirely empty within a matter of 2 months the first time I went to replace it after I first started troubleshooting it. They hadn't even done 5k. Wouldn't hurt to check, and as of yet I'm still not 100% certain my own 5001 is fixed, but unfortunately it's one of those fixes you throw in the machine and just wait and see. Haha
                        Just to quote myself, it would appear my own machine was fixed as well. Glad to see it was a board issue and it's been resolved! Happy Thanksgiving to yourself as well, 'tis your season.
                        Cthulhu for president! Why settle for the lesser evil?

                        Comment

                        • Akitu
                          Legendary Frost Spec Tech

                          Site Contributor
                          2,500+ Posts
                          • Oct 2010
                          • 2595

                          #42
                          Re: MX5001 back half of black images greatly faded

                          Originally posted by Akitu
                          Just to quote myself, it would appear my own machine was fixed as well. Glad to see it was a board issue and it's been resolved! Happy Thanksgiving to yourself as well, 'tis your season.
                          Re-quote myself. I spoke too soon, another month and a half down the line and my machine has pulled itself empty again. I'm going to look into my PTB and MC PWB, see if my results are any similar to yours.
                          Cthulhu for president! Why settle for the lesser evil?

                          Comment

                          • Sam Tofu
                            Trusted Tech

                            Site Contributor
                            100+ Posts
                            • Dec 2007
                            • 130

                            #43
                            Re: MX5001 back half of black images greatly faded

                            Akitu - so how has it gone for you? Is it now resolved?

                            Comment

                            Working...