MP C307 Image Shifting After First (P-Word)

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  • planetrob
    Technician
    • Feb 2023
    • 25

    #1

    MP C307 Image Shifting After First (P-Word)

    Hello all -
    First, sorry if this has already been asked and answered. I've been searching for about an hour now. I have a Savin MP C307 that is shifting the image quite a bit, duplex or not. I say that but the user there says it happens a lot more when duplexing. If duplexing (this is at a church and they print their two-sided bulletins) the first one will be fine, then all subsequent prints have the image on both sides shifted at least what looks like and inch or more, one direction on one side and the opposite direction on the other side. This is a SEF machine (only way it will work). I did notice shifting one one sided prints as well, but mostly on duplexed prints. I worked as a printer on pro series Xerox machines and when this happened to my Versant 80, I had anti-static fluid from Xerox and this always fixed the problem in that situation. However, there is nothing like the area I used to treat inside this 307. If paper were slipping, enough for the image to be as shifted as it is, wouldn't I get a jam SC Code? That makes me THINK that it's the image moving, not the paper being late or early. It's off enough that the triangle's point on the Counter Sheet is cut off at the top of the page on one said and the text at the bottom of this sheet is almost all the way cut off on the other side. The user at this church scans her bulletins and has the same result as me doing the "internal" print using the count sheets generated by the copier, not from a scan, if that makes sense.

    Any one have an idea? As I said, I've searched this forum and I've searched the Service Manual using all the search terms I could think of (skew, image shift, image skew, image moves, etc.)

    Again, if this has been answered, sorry for not finding it here before posting. Thanks to you all for any help I get.


    ..............rob
    I'm sorry dave, I'm afraid I can't do that.
  • blee
    Technician

    Site Contributor
    50+ Posts
    • Jan 2009
    • 51

    #2
    Re: MP C307 Image Shifting After First (P-Word)

    Sounds like it could possibly be just sticky registration or feed clutches. I've seen some images be way off and not register a jam on these smaller machines. You can go into output check in service mode and turn the clutches on and off and you should hear a click each time. If not or if the click comes after a delay when you hit on/off then you have a sticking clutch and it needs to be changed.

    Comment

    • slimslob
      Retired

      Site Contributor
      25,000+ Posts
      • May 2013
      • 37319

      #3
      Re: MP C307 Image Shifting After First (P-Word)

      You didn't say but I am going to guess that it is shifting away from the lead edge of the paper. That would explain each side of a duplex print being shifted in opposite directions as what is the lead edge on the first side is the trail edge on the second side. Most likely registration sensor or clutch. Anything else would give you a jam code of some type. If it does not do it when you only do one duplex sheet, I would definitely say a sticking registration clutch. The registration roller is still turning when the lead edge of the next sheet get to it. One thing you can try if you have to wait for a new clutch, set the feed buckle to a negative number. This will stop the lead edge of the paper before it reaches the registration roller.

      Comment

      • TonerMunkeh
        Professional Moron

        2,500+ Posts
        • Apr 2008
        • 3865

        #4
        Re: MP C307 Image Shifting After First (P-Word)

        It'll be the reg clutch, the 307 is quite bad for it.
        It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.

        Hit it.

        Comment

        • planetrob
          Technician
          • Feb 2023
          • 25

          #5
          Re: MP C307 Image Shifting After First (P-Word)

          Thanks to all that replied. I'm going to go get this machine and bring it in to the office as I've never replaced one and the techs here tell me this is what I should do. Everyone here at the forum is pretty sure it's the reg. clutch, and I'll reply here to verify or say what I did to fix it.

          Thanks again.

          .....rob
          I'm sorry dave, I'm afraid I can't do that.

          Comment

          • planetrob
            Technician
            • Feb 2023
            • 25

            #6
            Re: MP C307 Image Shifting After First (P-Word)

            Originally posted by slimslob
            You didn't say but I am going to guess that it is shifting away from the lead edge of the paper...
            Yes, that is correct. As of now, this customer is contemplating upgrading to a copier "with more stout in it." So, I'll update whichever route this takes.

            Again, thanks to all.
            .....rob
            Last edited by planetrob; 05-11-2023, 03:22 AM.
            I'm sorry dave, I'm afraid I can't do that.

            Comment

            • planetrob
              Technician
              • Feb 2023
              • 25

              #7
              Re: MP C307 Image Shifting After First (P-Word)

              Customer is going to have me fix this one AND they are getting a new one. I guess I'll report how the fix went since I'm all but sure it's what everyone has suggested, the registration clutch. I'll say how it went for any other newer techs who haven't attempted this repair before. Being a newbie my self with only a couple of years experience (and zero doing this fix) should be "fun"...at least that's what my co-workers say while holding in their laughs and giggles.


              ......rob
              I'm sorry dave, I'm afraid I can't do that.

              Comment

              • planetrob
                Technician
                • Feb 2023
                • 25

                #8
                Re: MP C307 Image Shifting After First (P-Word)

                I've been searching for a good while with no luck. I don't like asking this as it makes me feel like I'm trying to get someone to do the dirty work for me, but I'm getting ready to tackle replacing the registration clutch(es) and I don't really see a good step by step in the service manual. Is there maybe a thread here on how to do it the right way, or if not, does anyone know where in the service manual this procedure would be? I hate to be asking this but I really have looked and looked. I don't want to just start taking out screws and hope for the best...I'd like to at least have some sort of info on how to do it.

                Thanks............rob
                I'm sorry dave, I'm afraid I can't do that.

                Comment

                • slimslob
                  Retired

                  Site Contributor
                  25,000+ Posts
                  • May 2013
                  • 37319

                  #9
                  Re: MP C307 Image Shifting After First (P-Word)

                  Originally posted by planetrob
                  I've been searching for a good while with no luck. I don't like asking this as it makes me feel like I'm trying to get someone to do the dirty work for me, but I'm getting ready to tackle replacing the registration clutch(es) and I don't really see a good step by step in the service manual. Is there maybe a thread here on how to do it the right way, or if not, does anyone know where in the service manual this procedure would be? I hate to be asking this but I really have looked and looked. I don't want to just start taking out screws and hope for the best...I'd like to at least have some sort of info on how to do it.

                  Thanks............rob
                  My copy of the service manual seems very straight forward as far as Step by step. Replacement and Adjustment - Drive - Duplex Clutch, Bypass Feed Clutch, Registration Clutch, Paper Feed Clutch. You might have been looking in the paper feed section of the manual.

                  Comment

                  • planetrob
                    Technician
                    • Feb 2023
                    • 25

                    #10
                    Re: MP C307 Image Shifting After First (P-Word)

                    Originally posted by slimslob
                    You might have been looking in the paper feed section of the manual.
                    Yep. Exactly what I was doing. Rookie mistake and thank you so much for taking the time to reply. I'll get better....I promise.

                    Sorry about that!

                    .....rob
                    I'm sorry dave, I'm afraid I can't do that.

                    Comment

                    • planetrob
                      Technician
                      • Feb 2023
                      • 25

                      #11
                      Re: MP C307 Image Shifting After First (P-Word)

                      Originally posted by slimslob
                      My copy of the service manual seems very straight forward as far as Step by step.
                      As I've never attempted this, the manual doesn't seem that straight to me...haha! At that section, I have to go backwards using the links in the SM to take something off before moving on to this or that and before finally getting to the clutch in question and it's just a little confusing ONLY because I've never dug this deep into a copier. I'm sure there are tons and tons of experienced techs that will not benefit from my comments regarding this thread, but it's a HUGE learning experience for me, that's for sure.

                      Thanks everyone for showing me the path to fixing this.
                      I'm sorry dave, I'm afraid I can't do that.

                      Comment

                      • slimslob
                        Retired

                        Site Contributor
                        25,000+ Posts
                        • May 2013
                        • 37319

                        #12
                        Re: MP C307 Image Shifting After First (P-Word)

                        Originally posted by planetrob
                        As I've never attempted this, the manual doesn't seem that straight to me...haha! At that section, I have to go backwards using the links in the SM to take something off before moving on to this or that and before finally getting to the clutch in question and it's just a little confusing ONLY because I've never dug this deep into a copier. I'm sure there are tons and tons of experienced techs that will not benefit from my comments regarding this thread, but it's a HUGE learning experience for me, that's for sure.

                        Thanks everyone for showing me the path to fixing this.
                        What the fuck do you want them to do, put those steps like cover removals that are common for multiple repairs with each repair they are common with? Just be thankful that you don't have to thumb back and forth through printed service manuals like I had to for years before laptops and PDFs became available.

                        Comment

                        • planetrob
                          Technician
                          • Feb 2023
                          • 25

                          #13
                          Re: MP C307 Image Shifting After First (P-Word)

                          No, and I understand how that would make the service manuals tens of thousands of pages which would be a ton of work and a ton of data.
                          But, the section titled Duplex Clutch, Bypass Feed Clutch, Registration Clutch, Paper Feed Clutch, has two pages before going on to Fuser repair etc.

                          Two.

                          Again thanks for the help.
                          I'm sorry dave, I'm afraid I can't do that.

                          Comment

                          • tsbservice
                            Field tech

                            Site Contributor
                            5,000+ Posts
                            • May 2007
                            • 7972

                            #14
                            Re: MP C307 Image Shifting After First (P-Word)

                            Ummmm rob, it seems to me neither your company nor your colleagues take even a little time and care to train you and show you some basics in a proper manner. I understand and expect from customers to come here and we are moving their hands sometimes like a Voodoo dolls but being a tech for an year or so
                            You must come here frequently then.
                            A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                            Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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