bizhub 350 light copies

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  • brent
    Service Manager

    Site Contributor
    1,000+ Posts
    • Nov 2008
    • 1148
    #1

    bizhub 350 light copies

    ok peeps I am drawing a blank light copies on a drum that had 50 percent left.. I did a drum unit. developer and developer unit. because it needed a dv it had like 400k and the problem persists. other then the laser unit. is there any advice on what I can check next. ? the copies are light but still readable. just am drawing a blank on this
    and thought I would ask for help thanks
    brent
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22599
      #2
      Re: bizhub 350 light copies

      Did you do any simulations, like a developer stir, or reset counts? =^..^=
      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

        • brent
          Service Manager

          Site Contributor
          1,000+ Posts
          • Nov 2008
          • 1148
          #3
          Re: bizhub 350 light copies

          Originally posted by blackcat4866
          Did you do any simulations, like a developer stir, or reset counts? =^..^=

          Sure did. Reset counters. And ran an f8

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22599
              #4
              Re: bizhub 350 light copies

              Are you using OEM toner? =^..^=
              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

                • fixthecopier
                  ALIEN OVERLORD

                  2,500+ Posts
                  • Apr 2008
                  • 4712
                  #5
                  Re: bizhub 350 light copies

                  Are the internal f-12 prints also light? are you running original through adf or on glass
                  The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

                    Comment

                    • allan
                      RTFM!!

                      5,000+ Posts
                      • Apr 2010
                      • 5429
                      #6
                      Re: bizhub 350 light copies

                      Check the transfer. The contacts on the door bend.
                      And the developer gears break.
                      Whatever

                        Comment

                        • fixthecopier
                          ALIEN OVERLORD

                          2,500+ Posts
                          • Apr 2008
                          • 4712
                          #7
                          Re: bizhub 350 light copies

                          Originally posted by allan
                          Check the transfer. The contacts on the door bend.
                          And the developer gears break.
                          In addition to those door contacts, you indicated you changed the dv tank for being over 400k , if you have never changed the transfer roller, now is the time.
                          The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

                            Comment

                            • Copier Addict
                              Aging Tech

                              Site Contributor
                              10,000+ Posts
                              • Jul 2013
                              • 12686
                              #8
                              Re: bizhub 350 light copies

                              If you are using aftermarket toner, get rid of it. Since we switched back to OEM drums and toner we are getting up to and sometimes over 200% drum life. Service calls have gone way down and fusers are lasting quite a bit longer as well. The money we were saving on AM drums and toner was getting more than used up with service calls.
                              One of the main problems we had while using Densi toner on the BH350 series was low image density. It would be fine after a drum and dev change but get steadily lighter as the Densi toner got mixed in.
                              Just my two cents.

                                Comment

                                • fixthecopier
                                  ALIEN OVERLORD

                                  2,500+ Posts
                                  • Apr 2008
                                  • 4712
                                  #9
                                  Re: bizhub 350 light copies

                                  Ok Brent, how about a little closure on this.
                                  The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

                                    Comment

                                    • wseyller
                                      Service Manager

                                      1,000+ Posts
                                      • Sep 2012
                                      • 1129
                                      #10
                                      Re: bizhub 350 light copies

                                      Not sure if I missed it but I never saw mention if this happens with prints from computer or internal. I just saw copies being mentioned. Sure its not just dirty optics in scanner. Also there is user setting of adf for light/dark copies.

                                      Edit: just noticed fixthecopier asked if F12 prints are light but never got an answer to that.

                                        Comment

                                        • CraigW
                                          Trusted Tech

                                          Site Contributor
                                          250+ Posts
                                          • Dec 2010
                                          • 417
                                          #11
                                          Re: bizhub 350 light copies

                                          I had a 200 once that got light everything, and ended up being the drum unit in my case. Only about 40k into life also.

                                            Comment

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