Canon IR 5570 Lead Edge fade

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  • StephenB
    Trusted Tech

    100+ Posts
    • Aug 2015
    • 234
    #1

    Canon IR 5570 Lead Edge fade

    I'm more a Ricoh tech, but have worked a fair amount on these Canon IR's.

    Have an IR 5570 started out where it would very intermittently not transfer the image, on the lead edge ( see sample )
    Now 2 of 5 pages come out with the lead edge poorly transferred / faded.
    This unit has over 2 million pages, I believe it's the original drum. Otherwise copies are excellent.

    I have a working 5070, tried changing the transfer corona assembly, the end block where the assembly inserts,the development unit. Tried adjusting voltages in adjustments screen. Same problem

    Any help is greatly appreciatedCanon IR5570.JPG
    Tags: assembly, edge, lead, pages, transfer
    • Brian8506
      Service Manager

      Site Contributor
      1,000+ Posts
      • Feb 2009
      • 1623
      #2

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        • StephenB
          Trusted Tech

          100+ Posts
          • Aug 2015
          • 234
          #3
          Re: Canon IR 5570 Lead Edge fade

          Thanks Brian, but I am using quality paper, and I have 2 units in the same room using the same paper. I believe this is some kind of separation or transfer issue. Or High voltage short / leak

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            • Brian8506
              Service Manager

              Site Contributor
              1,000+ Posts
              • Feb 2009
              • 1623
              #4
              Re: Canon IR 5570 Lead Edge fade

              There is a cable from back of T/S unit to the HVT. How about legal or ltrr?


              Sent from my iPhone using Tapatalk

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                • StephenB
                  Trusted Tech

                  100+ Posts
                  • Aug 2015
                  • 234
                  #5
                  Re: Canon IR 5570 Lead Edge fade

                  I have checked that cable, Looks normal, and I re-seated. still faded
                  Regarding the "block" on the rear frame ( Machine) that the T/S unit drawer inserts into - is it known to fail and short ? Or the HV board ?

                  Thanks again for any assistance

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