Canon NP 6016 Streaks in feed direction

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  • CaptnRed
    Technician

    50+ Posts
    • Apr 2011
    • 57
    #1

    Canon NP 6016 Streaks in feed direction

    Hi folks, Have a NP 6016 machine with streaks in feed direction, see attachment for sample.


    I re-manufactured the A1 Drum assembly with new drum, wiper and PCR.

    Made the adjustments for the new drum ( Primary & IP_OFST )

    The customer was using aftermarket toner, emptied the developer and replaced with OEM toner


    To me it seems either the pre-exposure lamp is faulty or the drum isnt cleaning properly. Looking at the drum, the streaks of toner is both on the PCR and drum, if I wipe both clean the copies come out ok for the first few copies, then the streaks start from rear of machine moves up toward the front. If I turn the drum to clean itself, it seems to leave residual lines on the drum, cleaning a little bit but not all of the streaks.

    Could a bad pre-exposure lamp cause the toner to stick harder to the drum or is the cleaning portion not cleaning?

    Any way to test the pre-exposure?
    Attached Files
    Tags: 6016, canon np, streaks
    • teckat
      Field Supervisor

      Site Contributor
      10,000+ Posts
      • Jan 2010
      • 16083
      #2
      Re: Canon NP 6016 Streaks in feed direction

      Originally posted by CaptnRed
      Hi folks, Have a NP 6016 machine with streaks in feed direction, see attachment for sample.


      I re-manufactured the A1 Drum assembly with new drum, wiper and PCR.

      Made the adjustments for the new drum ( Primary & IP_OFST )

      The customer was using aftermarket toner, emptied the developer and replaced with OEM toner


      To me it seems either the pre-exposure lamp is faulty or the drum isnt cleaning properly. Looking at the drum, the streaks of toner is both on the PCR and drum, if I wipe both clean the copies come out ok for the first few copies, then the streaks start from rear of machine moves up toward the front. If I turn the drum to clean itself, it seems to leave residual lines on the drum, cleaning a little bit but not all of the streaks.

      Could a bad pre-exposure lamp cause the toner to stick harder to the drum or is the cleaning portion not cleaning?

      Any way to test the pre-exposure?


      Streaks are also in the non-image area

      u better check Drum assembly /especially the PCR Position
      **Knowledge is time consuming, exhausting and costly for a trained Tech.**

        Comment

        • CaptnRed
          Technician

          50+ Posts
          • Apr 2011
          • 57
          #3
          Re: Canon NP 6016 Streaks in feed direction

          I'll confirm and check it out thanks bro

          Originally posted by teckat


          Streaks are also in the non-image area

          u better check Drum assembly /especially the PCR Position

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22927
              #4
              Re: Canon NP 6016 Streaks in feed direction

              Yeah I saw one of these beasties recently. The drum blade had turned brown, and might as well have not been there at all. =^..^=
              If you'd like a serious answer to your request:
              1) demonstrate that you've read the manual
              2) demonstrate that you made some attempt to fix it.
              3) if you're going to ask about jams include the jam code.
              4) if you're going to ask about an error code include the error code.
              5) You are the person onsite. Only you can make observations.

              blackcat: Master Of The Obvious =^..^=

                Comment

                • CaptnRed
                  Technician

                  50+ Posts
                  • Apr 2011
                  • 57
                  #5
                  Re: Canon NP 6016 Streaks in feed direction

                  I re-seated the drum and PCR, then placed the old PCR back in. No changes.

                  Pulled the Pre-Exposure out, turned on the copier ever so carefully and watched 9 LED lamps light up, no problems in this area.

                  The budget is tight on this, I might re-check the grounding on all the connections.

                  Ideally I would pop a new OEM drum, but that's why its ideal.

                  The aftermarket toner was cleaned thoroughly out, I have a black blotched dress shirt to prove this, I can safely rule this cause out. Can a bad Dev connection cause this?

                  If you guys have any suggestions on how to corner this problem, given the lack of leeway on money, I would appreciate it. Regardless of the customer, my curiosity and ego needs to be satisfied.

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22927
                      #6
                      Re: Canon NP 6016 Streaks in feed direction

                      What does the mag roller look like? Keep in mind that those developing units were only good for 75K, optimistically.

                      I'll tell you what. Emergency stop the machine with paper under the drum. Then carefully remove the drum unit. You'll get three pieces of information. If the background is there between the cleaning blade and the developing unit it's drum cleaning. If it's found between the developing unit and the transfer it's a developing problem. =^..^=
                      If you'd like a serious answer to your request:
                      1) demonstrate that you've read the manual
                      2) demonstrate that you made some attempt to fix it.
                      3) if you're going to ask about jams include the jam code.
                      4) if you're going to ask about an error code include the error code.
                      5) You are the person onsite. Only you can make observations.

                      blackcat: Master Of The Obvious =^..^=

                        Comment

                        • CaptnRed
                          Technician

                          50+ Posts
                          • Apr 2011
                          • 57
                          #7
                          Re: Canon NP 6016 Streaks in feed direction

                          OK, ill test it when I get back to the customer.

                            Comment

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