WC7120 quality issue

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Jack79
    Trusted Tech

    250+ Posts
    • Jul 2014
    • 312
    #1

    WC7120 quality issue

    Hello


    Xerox WC7120 prints lighter on the bottom part of page. It is quite strange as CMYK colours seems to be ok on whole page.
    I have checked the primary transfer belt, 2BTR, drums. Could you advise where can be a problem please?

    Here is a picture
    scan222.jpg


    Jack
    Tags: None
    • JrTech
      Trusted Tech

      100+ Posts
      • Jun 2013
      • 217
      #2
      Re: WC7120 quality issue

      Being that the yellow is tapering off at the bottom and the solid yellow is showing signs of white on the sides is not a good sign. Wipe the drums and execute the print samples again and if it changes then it will be the respective drum. Does it go into Calibration all the time and then tell you to install a black toner when one is in there? Does it power off then on and ask for toner to be installed? if you can answer these we can narrow it down.

      Hope this helps.

        Comment

        • Jack79
          Trusted Tech

          250+ Posts
          • Jul 2014
          • 312
          #3
          Re: WC7120 quality issue

          Originally posted by JrTech
          Being that the yellow is tapering off at the bottom and the solid yellow is showing signs of white on the sides is not a good sign. Wipe the drums and execute the print samples again and if it changes then it will be the respective drum. Does it go into Calibration all the time and then tell you to install a black toner when one is in there? Does it power off then on and ask for toner to be installed? if you can answer these we can narrow it down.

          Hope this helps.
          Hi thank you for yoyr reply

          Solid colours look fine. The white gap between Magenta and Black is on the original document so it has to be like that.
          Machine does not go into calibration and does not ask to install any toner.

          I can agree that there is a problem with Y colour because LSU glass had a lot of yellow toner on it. I wipe current drum and even swap drum from another machine but it has the same issue. Current drums are around 78%. Any idea?

          Here is a sample of Yellow colour printed from pattern 59 which looks fine.

          IMG_4065.JPG

            Comment

            • Exok
              Senior Tech

              500+ Posts
              • Jun 2011
              • 750
              #4
              Re: WC7120 quality issue

              Have you cleaned the print heads?

                Comment

                • Jack79
                  Trusted Tech

                  250+ Posts
                  • Jul 2014
                  • 312
                  #5
                  Re: WC7120 quality issue

                  Yes printhead lenses are clean. Any idea?

                    Comment

                    • adriansto
                      Service Manager

                      Site Contributor
                      VIP Subscriber
                      1,000+ Posts
                      • Nov 2007
                      • 2383
                      #6
                      Re: WC7120 quality issue

                      Originally posted by Jack79
                      Yes printhead lenses are clean. Any idea?
                      Do a panic stop of the machine before the transfer of the image from ibt to paper.
                      Check with attention how the image look on belt.
                      Also panic stop at the moment when half of the image is transfered on paper and do a check how the image look on paper and how it look on belt.
                      Use A3 size sheets of paper for ease of tests.

                        Comment

                        Previous template Next
                        Working...