Noisy Printheads/Laserunits

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  • Hansoon
    Field Supervisor

    Site Contributor
    2,500+ Posts
    • Sep 2007
    • 3387
    #1

    Noisy Printheads/Laserunits

    Until now I always replaced noisy Polygon Mirror Motors in Printheads/Laserunits.

    Unfortunately at the time I face several BW Bizhub 350's with noisy laser motors. They are coming in abundance like rotten apples falling from a tree. Only last week I had three in a row.

    Did anybody have experience with cleaning the mirror shafts and bushings and slightly (VERY slightly) relubing the shaft of those noisy mirror motors? I tried one which is working fine until now but I have no long time experience yet. I believe that this problem is not limited to KonicaMinolta but will be broadly among all brands using the same technology.

    Hans
    “Sent from my Intel 80286 using MS-DOS 2.0”

    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 23009
      #2
      Re: Noisy Printheads/Laserunits

      On HP LJ4 and LJ2200 printers, I've been cleaning the shaft, then taking a single drop of oil, wipe most of it off, then the remaining on the shaft. These HP's will go any where from 4 months to a year, before actually needing the laser replacement.

      I've never been into the KM laser units, so I can't tell you if the polygon mirror assembly will slide off the shaft. Some won't. =^..^=
      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

        • Hansoon
          Field Supervisor

          Site Contributor
          2,500+ Posts
          • Sep 2007
          • 3387
          #3
          Re: Noisy Printheads/Laserunits

          I've never been into the KM laser units, so I can't tell you if the polygon mirror assembly will slide off the shaft. Some won't. =^..^=
          They do. There's a tiny bracket under the mirror disc itself which keeps the rotor from spinning off. This bracket has only one screw to remove than you can take the rotor off. I did as you did: cleaned the shaft and bushing with alcohol and than a minuscule dot of oil the size of a speck of fly poop.

          Hans
          “Sent from my Intel 80286 using MS-DOS 2.0”

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 23009
              #4
              Re: Noisy Printheads/Laserunits

              Let me know how well it lasts. =^..^=
              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

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