C751ex quality issue

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  • ddocinc
    • May 2025
    #1

    C751ex quality issue

    Hi, purchased a c751ex....ran about 80k on it..blue solids are not solid they have what looks like equal margin roller marks.ran solid tests..only seems to happen on blue...when we have a file that contains solid blue or green 2inch box they show up with noticeable magenta and deletion lines...tech is stumped...should I get a replacement...

    thanks t
    Tags: None
    • JustManuals
      Field Supervisor

      5,000+ Posts
      • Jan 2006
      • 9838
      #2
      Re: C751ex quality issue

      This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


      Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads



      Paul@justmanuals.com

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        • Imprestik
          Trusted Tech

          250+ Posts
          • Aug 2012
          • 296
          #3
          Re: C751ex quality issue

          Any chance of getting a sample scanned up here please?

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            • totoro
              Senior Tech

              Site Contributor
              500+ Posts
              • Apr 2008
              • 568
              #4
              Re: C751ex quality issue

              What has the tech tried so far? Is this a trained Ricoh tech? I would probably print solids in each color : cyan , magenta , yellow , and black and see which colors have the defect and start from there. I would think drum, charge , cleaning and maybe laser.
              Totoro

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                • ddocinc
                  #5
                  Re: C751ex quality issue

                  tech is ricoh trained...has done all the normal checks, drums...charge unit...even tried the stuff in the tech bulletins..he was here about 4 days ago...took some samples and said he would get back....nothing yet....I will try to get a scanned image uploaded tomorrow.....im wondering if this is common issue or just a bad machine...I have a 90 day warranty....t

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                    • vwrome
                      #6
                      Re: C751ex quality issue

                      Sounds like a Dev. Unit

                      Originally posted by ddocinc
                      tech is ricoh trained...has done all the normal checks, drums...charge unit...even tried the stuff in the tech bulletins..he was here about 4 days ago...took some samples and said he would get back....nothing yet....I will try to get a scanned image uploaded tomorrow.....im wondering if this is common issue or just a bad machine...I have a 90 day warranty....t

                        Comment

                        • ddocinc
                          #7
                          Re: C751ex quality issue

                          they are going to bring another dev unit this week...hopfully will solve problem...if not please stay tuned...
                          t

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                            • tjvincent
                              Trusted Tech

                              250+ Posts
                              • Apr 2008
                              • 280
                              #8
                              Re: C751ex quality issue

                              We have 1 with 2 million on it in 1 years time, probably the most common thing is to make sure cleaning units have been updated, there was a service bulletin out for this as well, maybe your machine all ready has it ?

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