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  1. #1
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    Bizhub C658 showing 0.00% TCR Density for magenta


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    Bizhub C658 showing 0.00% TCR Density for magenta

    C458, not C658. Made a mistake when writing the title. Probably the same components, but wanted to clarify.

    Hey all, I've tried the developer, the FRB, and the high voltage board. Image quality is great, but the machine detects 0.0 for magenta and so of course it codes out after 25 pages or so. I don't want to run this machine too much until it registers right. Any other parts besides the MFP board that anyone can think of?
    Last edited by JasonSBE; 09-05-2023 at 08:44 PM.

  2. #2
    Service Manager 5,000+ Posts
    Bizhub C658 showing 0.00% TCR Density for magenta

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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by JasonSBE View Post
    C458, not C658. Made a mistake when writing the title. Probably the same components, but wanted to clarify.

    Hey all, I've tried the developer, the FRB, and the high voltage board. Image quality is great, but the machine detects 0.0 for magenta and so of course it codes out after 25 pages or so. I don't want to run this machine too much until it registers right. Any other parts besides the MFP board that anyone can think of?

    Have you fitted a new magenta developer unit ?
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  3. #3
    Service Manager 2,500+ Posts
    Bizhub C658 showing 0.00% TCR Density for magenta


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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    What about the drum? I always replace the drum & add some aftermarket developer, then manually add toner in service mode until around 6%.

    You covered a lot already. But you should of seen some type of change with new developer unit or even swapping from another machine.

    How about initializing machine?

    Only thing I can think of is MFP board if all else fails.
    Last edited by copyman; 09-06-2023 at 03:25 AM.

  4. #4
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    Bizhub C658 showing 0.00% TCR Density for magenta


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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Maybe hopper is empty but thinks itís full so it thinks itís feeding toner into dev when itís actually not

  5. #5
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by rrrohan View Post
    Maybe hopper is empty but thinks itís full so it thinks itís feeding toner into dev when itís actually not
    +1 for toner hopper
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  6. #6
    Service Manager 2,500+ Posts
    Bizhub C658 showing 0.00% TCR Density for magenta


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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by rrrohan View Post
    Maybe hopper is empty but thinks itís full so it thinks itís feeding toner into dev when itís actually not
    OP said they replaced the developer and still at 0%. If new developer is installed the level history would change even if toner hopper was empty.

  7. #7
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by copyman View Post
    OP said they replaced the developer and still at 0%. If new developer is installed the level history would change even if toner hopper was empty.
    Not necessarily. He said he replaced "developer" and we don't know what exactly he's replaced, powder, second hand unit won't reset TCR at all only brand new unit or chip.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

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  8. #8
    Service Manager 1,000+ Posts kingarthur's Avatar
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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    I had exactly the same problem, new DV units, new toner hoppers, toner motors, as it was happening on 2 colours, FRCB, I was ready to sell them a new machine, when I tried the expansion board, EXCB, p/no A79JH00500, couldn't believe it when it worked - been working for a year now
    Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...

  9. #9
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    Bizhub C658 showing 0.00% TCR Density for magenta


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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by tsbservice View Post
    Not necessarily. He said he replaced "developer" and we don't know what exactly he's replaced, powder, second hand unit won't reset TCR at all only brand new unit or chip.
    Sorry, let me clarify. It was the developer unit, not recharging the one that was in the machine.

  10. #10
    Senior Tech 100+ Posts
    Bizhub C658 showing 0.00% TCR Density for magenta


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    Re: Bizhub C658 showing 0.00% TCR Density for magenta

    Quote Originally Posted by kingarthur View Post
    I had exactly the same problem, new DV units, new toner hoppers, toner motors, as it was happening on 2 colours, FRCB, I was ready to sell them a new machine, when I tried the expansion board, EXCB, p/no A79JH00500, couldn't believe it when it worked - been working for a year now
    Thank you for the pointer. I'm going to look into it.

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