MP305+ huge gap on ADF scan

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  • Bourriks
    Technician
    • May 2016
    • 38

    [Misc] MP305+ huge gap on ADF scan

    Hello everyone.

    I'm looking on a MP305+ who makes huge gaps when scanning with the DF. The gap is 4 or 5 cm to the bottom of the page.
    Here is a picture. Left, the original printed, second left, a copy scanned with the main glass scanner. The 2 sheets on the right are copies made from the DF.

    The customer has the same issue when he scans to folder or mail.
    This gap is far beyond the corrections I can make in system SP. I suspect an issue on an electronics card making the analysis from the DF.

    What do you think ?

    IMG_20230316_162856.jpg

    For extra context, this customer uses a dozen of MP305+ in various offices, and I have issues only with this one, I think because of over-usage. It has 216k prints in 2 or 3 years of life, the scan a lot, very lots. Last months, I changed the fuser, the PCDU (maybe 2 times), the DF plate broken by someone here, the PTR... Besides the scanner and the electronic boards, there is no old part in this printer.

    I'd like to convince my sales dept to sell a stronger machine for this office.
  • dalewb74
    Service Manager

    Site Contributor
    1,000+ Posts
    • Feb 2018
    • 1049

    #2
    Re: MP305+ huge gap on ADF scan

    if it occurs using the adf, why would you replace the parts you have replaced? what have you done on the adf itself? as i am thinking you are referring to the df? document feeder? i would start with rollers.

    Comment

    • dalewb74
      Service Manager

      Site Contributor
      1,000+ Posts
      • Feb 2018
      • 1049

      #3
      Re: MP305+ huge gap on ADF scan

      the parts you replaced were for a different issue? correct?

      Comment

      • Elmo
        Senior Tech

        Site Contributor
        500+ Posts
        • Feb 2010
        • 541

        #4
        Re: MP305+ huge gap on ADF scan

        Possible issue with the original timing sensor or late arrival of original at sensor
        Attached Files
        I Used To Live To Fix Things Now i Fix Things To Live

        Comment

        • slimslob
          Retired

          Site Contributor
          25,000+ Posts
          • May 2013
          • 34919

          #5
          Re: MP305+ huge gap on ADF scan

          Pictures of pages don't really tell us diddly crap, especially when you overlap edges, but I will try.

          Have you tried making adjustments in SP 6-006 ADF Adjustment? -1 and -2 are side registration which I think is where you need to adjust. Registration adjustments need to be done in a specific order:
          1. Make sure that the side fences of the paper tray are correct and that there are no broken teeth on the fence racks.
          2. Main paper registration in SP 1
          3. ADF adjustments in SP 6

          All too often a rear fence will jump one tooth on the rack. The operator then tightens the front fence against the paper. This throws the side registration off. A technician then comes out and adjusts SP 1-002 Side to Side Registration and leaves. Now the ADF side registration is off. It looks like this is what has happened to you. If there is a tooth missing from either side fence rack, you need to replace that side fence. BTW, the teeth are usually broken by some goon slamming the paper drawer closed too fucking hard.

          Comment

          • Bourriks
            Technician
            • May 2016
            • 38

            #6
            Re: MP305+ huge gap on ADF scan

            For quick responses, the parts I changed before were for different problems occured months ago, such as black lines due to old PCDU, or fuser changed because toner badly stuck, some normal things during a printer's life.

            Last thing I changed were the original table because the customer broke it (the are not very tough)
            parts.jpg

            But for the photo I posted on the first post, I precise the prints are in LEF, and the sheets are scanned on the ADF from LEF, so the gap is not caused by any wrong paper path or jam. The sheets run in the ADF perfectly, I or course cleaned the rollers.

            But the only problem is that gap of 5 cm to the bottom.
            I re-upload the sheets picture with red arrows who show the sheets direction when exiting the printer.

            IMG_20230316_162856_2.jpg

            Comment

            • slimslob
              Retired

              Site Contributor
              25,000+ Posts
              • May 2013
              • 34919

              #7
              Re: MP305+ huge gap on ADF scan

              Originally posted by Bourriks
              For quick responses, the parts I changed before were for different problems occured months ago, such as black lines due to old PCDU, or fuser changed because toner badly stuck, some normal things during a printer's life.

              Last thing I changed were the original table because the customer broke it (the are not very tough)
              [ATTACH=CONFIG]57286[/ATTACH]

              But for the photo I posted on the first post, I precise the prints are in LEF, and the sheets are scanned on the ADF from LEF, so the gap is not caused by any wrong paper path or jam. The sheets run in the ADF perfectly, I or course cleaned the rollers.

              But the only problem is that gap of 5 cm to the bottom.
              I re-upload the sheets picture with red arrows who show the sheets direction when exiting the printer.

              [ATTACH=CONFIG]57287[/ATTACH]
              I'm throwing a bullshit flag. You provide us the same pictures that I already said were inadequate. You have merely added arrows showing the direction the paper exited the 305+ but stills tells us nothing about the how paper traveled through the Document Feeder.

              Then you say there is a 5cm gap at the bottom. Are you aware the 5cm is almost 2 inches. That would be more than the height of the black triangle at the top of the counter sheet. What I am seeing, but I cannot be certain because you have the pages overlapped, is maybe a 4mm or 5mm shift. That could be from a user setting in the copier function. You claim that the customer has more than one of these and this is the only one with the problem. Print the non-defaults SP 5-990-06 of this machine and at least one of the others and compare them. Dimes to donuts you will see a difference in the settings.

              Comment

              • Bourriks
                Technician
                • May 2016
                • 38

                #8
                Re: MP305+ huge gap on ADF scan

                Sorry, it's difficult to be explicit. Here are fresh tests made 10 minutes ago :

                IMG_20230317_083746.jpg
                Print of SP5.990.6

                IMG_20230317_083756.jpg
                Scan on glass

                IMG_20230317_083837.jpg

                Result : perfect

                IMG_20230317_083852.jpg
                Scan on ADF

                IMG_20230317_083903.jpg IMG_20230317_083921.jpg IMG_20230317_083953.jpg
                Result : print gap 4 or 5cm towards the rear of the machine. The cross lines pattern indicates the printing from drum is correct.

                IMG_20230317_083937.jpg

                Comment

                • Gift
                  Service Manager

                  1,000+ Posts
                  • Mar 2011
                  • 2401

                  #9
                  Re: MP305+ huge gap on ADF scan

                  Funny, this model is a bit "exotic" to me but it seems to be some sort of timing issues like the others suggested. Still I'd check the non default SP page for any suspicios settings and clean/check all sensors and reflective areas. There might be one hidden in the paper path shortly before the paper arrives the white plate/contact glass. If everything looks fine you can try a feeder from a different machine or take this feeder to a different machine for testing. I'd try that before starting with the BICU.

                  Some smaller Ricoh mfps are also known for harness->machine issues. Usually it should lead to error/jam messgaes though.

                  Comment

                  • Bourriks
                    Technician
                    • May 2016
                    • 38

                    #10
                    Re: MP305+ huge gap on ADF scan

                    I swapped the ADF with another MP305+, and guess what, the issue seems to be in the ADF. The copies are perfect.

                    IMG_20230317_152839.jpg

                    Now I have to find what's wrong in this ADF.

                    Comment

                    • slimslob
                      Retired

                      Site Contributor
                      25,000+ Posts
                      • May 2013
                      • 34919

                      #11
                      Re: MP305+ huge gap on ADF scan

                      Originally posted by Bourriks
                      Sorry, it's difficult to be explicit. Here are fresh tests made 10 minutes ago :

                      [ATTACH=CONFIG]57310[/ATTACH]
                      Print of SP5.990.6

                      [ATTACH=CONFIG]57311[/ATTACH]
                      Scan on glass

                      [ATTACH=CONFIG]57312[/ATTACH]

                      Result : perfect

                      [ATTACH=CONFIG]57313[/ATTACH]
                      Scan on ADF

                      [ATTACH=CONFIG]57314[/ATTACH] [ATTACH=CONFIG]57315[/ATTACH] [ATTACH=CONFIG]57316[/ATTACH]
                      Result : print gap 4 or 5cm towards the rear of the machine. The cross lines pattern indicates the printing from drum is correct.

                      [ATTACH=CONFIG]57317[/ATTACH]
                      Originally posted by Bourriks
                      I swapped the ADF with another MP305+, and guess what, the issue seems to be in the ADF. The copies are perfect.

                      [ATTACH=CONFIG]57336[/ATTACH]

                      Now I have to find what's wrong in this ADF.
                      You are still sending useless photographs.

                      Comment

                      • MIGUELMARCHENA
                        Trusted Tech

                        Site Contributor
                        100+ Posts
                        • Feb 2018
                        • 170

                        #12
                        Re: MP305+ huge gap on ADF scan

                        You can scan these sheets in pdf and send to your email and download them to your mobile or PC and attach them here comfortably.

                        Comment

                        • MIGUELMARCHENA
                          Trusted Tech

                          Site Contributor
                          100+ Posts
                          • Feb 2018
                          • 170

                          #13
                          Re: MP305+ huge gap on ADF scan

                          In other models, cleaning the size sensors fixes that edge problem, although in an mp 305, it was the bicu.
                          the machine started failing just like yours until it died...bicu.

                          Fortunately if you have tried another adf and it didn't work, maybe they are sensors

                          greeting

                          Comment

                          • davel
                            Technician

                            1,000+ Posts
                            • Oct 2011
                            • 1039

                            #14
                            Re: MP305+ huge gap on ADF scan

                            Check everything to do with the original feed table that you replaced.

                            Comment

                            • Gift
                              Service Manager

                              1,000+ Posts
                              • Mar 2011
                              • 2401

                              #15
                              Re: MP305+ huge gap on ADF scan

                              Originally posted by Bourriks
                              I swapped the ADF with another MP305+, and guess what, the issue seems to be in the ADF. The copies are perfect.

                              [ATTACH=CONFIG]57336[/ATTACH]

                              Now I have to find what's wrong in this ADF.
                              OK - did you try to use input check for testing all DF sensors? It might make sense to check and compare the sensor data and behaviour of the sensors in both ADFs

                              Comment

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