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  1. #1
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    E121-001 (IR6570)

    I have a IR6570 and when I turn on the machine it shows the code E000121-001, have changed the FM4 fan controller and still the same problem. When I check the voltage on the cable 10V FM4 time comes and she calls and suddenly she gets 0V and display code. Have disconnected J108 and nothing help me.

  2. #2
    Service Manager 10,000+ Posts
    E121-001 (IR6570)

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    Re: E121-001 (IR6570)

    Quote Originally Posted by megacopiadoras View Post
    I have a IR6570 and when I turn on the machine it shows the code E000121-001, have changed the FM4 fan controller and still the same problem. When I check the voltage on the cable 10V FM4 time comes and she calls and suddenly she gets 0V and display code. Have disconnected J108 and nothing help me.
    ==============
    Fan has 2-speed control (voltage) (24/12 V)

    controller cooling fan
    cools the laser unit,developing block drive block, and controller

    u can't disconnect J108=ERROR CODE will pop

    trace V back to supply source/DC power supply
    also> make sure your front door switch is working

    click on pic

    fm4.JPG
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  3. #3
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    Re: E121-001 (IR6570)

    I put the DC Controller this machine that has the code on another machine, and the code presented in another machine also.

    Will DC CONTROLLER.

  4. #4
    Service Manager 10,000+ Posts
    E121-001 (IR6570)

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    Re: E121-001 (IR6570)

    Quote Originally Posted by megacopiadoras View Post
    I put the DC Controller this machine that has the code on another machine, and the code presented in another machine also.

    Will DC CONTROLLER.
    ---------
    If dc pcb shows issue in another same model,
    means / the signal for fan on is poor.

    Did u swap the working dcpcb to problem printer ?
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  5. #5
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    Re: E121-001 (IR6570)

    I never do that, would be more appropriate, since it already testing the fan and even this ok?

  6. #6
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    Re: E121-001 (IR6570)

    i haw same problem on IR5570 when I turn on the machine after 5/6 sec it shows the code E000121-001, changed the fan controller and still the same error .front door switch is working ok
    what to do ?

  7. #7
    Service Manager 10,000+ Posts
    E121-001 (IR6570)

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    Re: E121-001 (IR6570)

    Quote Originally Posted by canonservis View Post
    i haw same problem on IR5570 when I turn on the machine after 5/6 sec it shows the code E000121-001, changed the fan controller and still the same error .front door switch is working ok
    what to do ?
    ===============================

    what about the FM4 fan ?
    Did u Check the connector for any fault in connection.?
    Did u check voltage supply ?

    as noted above that Fan is a two stage voltage (24/12 V) unit
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  8. #8
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    Re: E121-001 (IR6570)

    already solved the problem really was the dc plate dcontroller, thanks to everyone who lost a little time.

  9. #9
    Trusted Tech 100+ Posts lilleputte's Avatar
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    Re: E121-001 (IR6570)

    Hi , Old post but replacing the dc-controller was the solution for me

  10. #10
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    Re: E121-001 (IR6570)

    I have the same problem and was wondering if one of the resistor fuses on the dc controller could be bad? I cant find a dc controller circuit diagram in the service manual. Does anyone know what the fuses FU1 to FU20 on the dc controller are for I know one of them is for the hopper motor i had changed before. Im looking if one might be for the fan #4.

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