Sound coming from BP-70C36, video attached

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  • danny464
    Technician

    Site Contributor
    50+ Posts
    • May 2019
    • 81
    #1

    Sound coming from BP-70C36, video attached

    Hi, we have a sound coming from a bp-70c36. It is supposed to be delivered this week but we think customer will be annoyed with the sound. It seems to be coming from the laser unit and I would think it is either a fan or motor since you can hear it slow down after a while.

    It happens as soon as you go to the copy screen but you do not even need to be making copies/prints for it to sound. We did simulation 6-2 to test the fans but it did not sound with any of the fans here.

    Anyone have any advice?

    Video- Dropbox - IMG_1220.mov - Simplify your life
    Tags: bp-70c36, coming, copier, fans, sound
    • Hart
      Trusted Tech

      250+ Posts
      • Feb 2024
      • 366
      #2
      Re: Sound coming from BP-70C36, video attached

      This sound is really familiar but I did not hear it for a long time.
      I guess it's the LSU but I'm not sure, I'm gonna try to check tomorrow if I can reproduce it on a CR4 or CR5.

        Comment

        • leo34staffs
          copierman

          Site Contributor
          500+ Posts
          • Aug 2007
          • 503
          #3
          Re: Sound coming from BP-70C36, video attached

          Sounds like polygon motor in laser unit.
          Networking skills are advantageous but use of a 3m vacuum cleaner is essential

            Comment

            • boutn
              Senior Tech

              500+ Posts
              • Jun 2016
              • 540
              #4
              Re: Sound coming from BP-70C36, video attached

              Thats just the polygon motor which always makes a lot of noise...certainly with the covers removed.

                Comment

                • Mint325
                  Hybrid Tech
                  • Feb 2016
                  • 17
                  #5
                  Re: Sound coming from BP-70C36, video attached

                  I've set up so many of these BPs in the last few months, this sounds normal to me. I don't suppose you have a second BP to compare it with? If it is a problem, you could just claim warranty with sharp for a new laser to be sent. I believe SIM 61 to access the LSU settings.
                  Ricoh Technician for 6 Years
                  Sharp Technician for 3 Years
                  Dabbled in Canons, Brothers, HPs, Lexmarks, FPs. etc
                  "If I can glue it; I can fix it."

                    Comment

                    • Hart
                      Trusted Tech

                      250+ Posts
                      • Feb 2024
                      • 366
                      #6
                      Re: Sound coming from BP-70C36, video attached

                      The LSU is really discreet since the CR4 serie.
                      If the noise is too much you can play around the sleep timer and the eco scan setting.

                        Comment

                        • danny464
                          Technician

                          Site Contributor
                          50+ Posts
                          • May 2019
                          • 81
                          #7
                          Re: Sound coming from BP-70C36, video attached

                          Testing the LSU with sim 61-1 did make the noise so it is the LSU like everyone said. I do not have another BP to compare but I compared it to a 3070 and 3071 and there is a significant difference. We played with the eco settings but could not make it any better. We will ask sharp to send us an LSU. Thanks everyone!

                            Comment

                            • Dark Helmet
                              Senior Tech

                              Site Contributor
                              500+ Posts
                              • May 2009
                              • 835
                              #8
                              Re: Sound coming from BP-70C36, video attached

                              Years ago, can't remember if it was on the 2640 or 2600, there was a bulletin that had a software switch you could change so the polygon shut off really fast so those fussy offices didn't have to hear the high pitch. It did increase warm up time.

                              If you can find it it might still apply to the BP to test.

                              In my opinion that sound is normal.
                              Evil will always triumph because good is dumb.

                                Comment

                                • susu
                                  Junior Member
                                  • Mar 2024
                                  • 2
                                  #9
                                  Re: Sound coming from BP-70C36, video attached

                                  [QUOTE=Lawrence;2589229]幾年前，不記得是在 2640 還是 2600 上，有一個公告，其中有一個可以更改的軟體開關，因此多邊形關閉得非常快，因此那些挑剔的辦公室沒有聽到高 音。它確實增加了預熱時間。

                                  如果你能找到它，它可能仍然適用於 BP 進行測試。

                                  我認為聲音是正常的。

                                  55-1 4-1

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