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  1. #1
    Trusted Tech 50+ Posts
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    Unhappy KM bizhub PRO C6500 C-4520 error 2

    Hi, I have a PRO C6500 I'm sending the last two prints I got. The machine gave the C-4520 error and when I conduct the Color Registration Adjustment I got the error 2. Long history short I have problems with this machine 2 weeks ago first the charging corona black reached the 120% of usage and has not been changed on time. The machine was printing gray scale and it make 3 pages with full black and many of the black developer was out of the developing unit. I put new charging coronas and black developer, and the machine works well a little time then I got the C-4520 error and I conducted the Color Registration Adjustment it works well again but after 1 - 2 thousand prints the machine start making a strange noise near the drums units and gave me the C-4520 error I changed the black drum because it was @ 98% after that I run the Color Registration Adjustment again and I only got error 2, I run then the Toner Init Density and Auto Gamma but error 2 persist. I also noted this piece of metal that you can see in the picture dropped in the floor. I'm desperately needing a good advice, or a good technician willing to travel to my country. Guatemala. It can be done in week ends if needed, and of course, I will cover all the expenses. Flight, hotel, all and of course the fee. If anyone thinks it's not so complicated please let me know what can I try I have very little knowledge in this kind of machines.

    Warmest regards.
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  2. #2
    Senior Tech 100+ Posts lucky13's Avatar
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    look at the top of your image transfer belt unit ill bet the bering popped out ,seen this happen before look at bearing # 2 in PDF
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    Last edited by lucky13; 05-07-2009 at 04:01 AM.

  3. #3
    Major Asshole! 2,500+ Posts
    KM bizhub PRO C6500 C-4520 error 2

    mrwho's Avatar
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    Yes, it seems to the that metal piece you found on the floor came from the transfer belt unit and that could be causing most of your problems. Check all your bearings as Lucky said, because if the belt is not properly stretched, the machine will have trouble alligning the colors.

  4. #4
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    Driving Roller Assy Broken

    Hi, thanks for the help. I went to clean the machine and to check where the C clip belongs. But when reinstalling the transfer belt I noticed that the Driving Roller Assy was broken. You can see it in the picture. The C clip that was in the floor belongs to it. I ordered the spare but I'm going to have it by Thursday or Fryday. I'm sending the pics because it's very rare to me that it was broken. It seems like broken by torsion. So I'm wondering if I need to check something else before install the transfer belt again? Some one else have had the same problem before?

    Regards.
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  5. #5
    Major Asshole! 2,500+ Posts
    KM bizhub PRO C6500 C-4520 error 2

    mrwho's Avatar
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    Such a thing never happened to me! How many prints does that machine have???

  6. #6
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    This has happened to me before. Each time the machine has done over 1 million prints.

  7. #7
    Senior Production Tech 100+ Posts texchar555's Avatar
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    I had the same thing happened to me. Im at a call right now with the same issue, but this one was a 1 mill the other was at 3.4 mill. called konica and they are looking into it.

  8. #8
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    It has 105K total and 65K in color. This is not even closer to a million.

  9. #9
    Technician
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    I have had this problem on more than one C500/8050 but never C6500 but i replaced the roller, bearings and plastic outer sleeve on the others and never had it return so hopefully yours will be the same.

  10. #10
    Trusted Tech 50+ Posts
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    I have one on my desk the same. Persoanlly thought that the one I have got damaged slightly by an over enthusiastic field tech but listening to this list I guess its common place.

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