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  1. #1
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    C4000 SC548 Error Code- Most common causes?

    Hi Guys,

    I'm dealing with a Ricoh C4000 that has a sporadic SC548 error.

    Before I replace the fuser, I wanted to ask- are there any other reasons that cause this to only happen randomly?

    I cleaned all the sensors and re-seated it a few times. All the sensors and connectors seem to be in the correct positions and are not bent or damaged. It seems to work fine for a few days, then it comes back.

    This unit also has been having paper jams where the page stops about halfway through the fuser.

    Am I missing any lesser expensive things I could try? (Before replacing the fuser)

  2. #2
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    C4000 SC548 Error Code- Most common causes?


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    Re: C4000 SC548 Error Code- Most common causes?

    Make sure it has at least version 1.56:08 Engine firmware.

    Clean the fusing unit rotation sensor.

    Rotate the gear [B] manually in the direction shown in the photo below.If it is hard to rotate the gear, replace the fusing unit.

  3. #3
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    Re: C4000 SC548 Error Code- Most common causes?

    Quote Originally Posted by anothertech View Post
    Make sure it has at least version 1.56:08 Engine firmware.

    Clean the fusing unit rotation sensor.

    Rotate the gear [B] manually in the direction shown in the photo below.If it is hard to rotate the gear, replace the fusing unit.
    It spins pretty easily. Is the rotation sensor this one? Ive cleaned this one twice.


    Sent from my iPhone using Tapatalk

  4. #4
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    C4000 SC548 Error Code- Most common causes?


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    Re: C4000 SC548 Error Code- Most common causes?

    Yes that's the sensor. When you turn the fuser, does the encoder flag turn? You've got to get the covers off the fuser and get a good look at everything to troubleshoot the problem.

    What version is the Engine firmware?

  5. #5
    Service Manager 1,000+ Posts luca72's Avatar
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    Re: C4000 SC548 Error Code- Most common causes?

    Quote Originally Posted by PressingPrintz View Post
    Hi Guys,

    I'm dealing with a Ricoh C4000 that has a sporadic SC548 error.

    Before I replace the fuser, I wanted to ask- are there any other reasons that cause this to only happen randomly?

    I cleaned all the sensors and re-seated it a few times. All the sensors and connectors seem to be in the correct positions and are not bent or damaged. It seems to work fine for a few days, then it comes back.

    This unit also has been having paper jams where the page stops about halfway through the fuser.

    Am I missing any lesser expensive things I could try? (Before replacing the fuser)

    bad fuser contact, if you want to try a cheap thing to do...
    clean well the contacts of the fuser connector and those on the machine with a cotton swab and alcohol, you can also use a scrap of light sandpaper, for example those cardboard sticks covered in sandpaper that women use to file their nails...also the bad thermoswitch's can make di problem
    "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

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    Re: C4000 SC548 Error Code- Most common causes?

    So after inspecting, I noticed the left side seemed to have more resistance when installing. I took the fuser out and noticed the left outer panel was not correctly installed. After fixing that, the fuser goes in like butter and the error went away. We'll see how long it stays away. Fingers crossed!

  7. #7
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    Re: C4000 SC548 Error Code- Most common causes?

    Cancel the hero cake- the error is back guys. Where should I go from here?

  8. #8
    Service Manager 1,000+ Posts luca72's Avatar
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    Re: C4000 SC548 Error Code- Most common causes?

    Quote Originally Posted by PressingPrintz View Post
    Cancel the hero cake- the error is back guys. Where should I go from here?


    I told you above what you have to do, the connector, and the termoswitch's, check the both plastic lever if lock well, and are no broken
    Last edited by luca72; 2 Weeks Ago at 12:23 AM.
    "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

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    Re: C4000 SC548 Error Code- Most common causes?

    Any idea where the thermoswitch located on this one?


    Sent from my iPhone using Tapatalk

  10. #10
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    C4000 SC548 Error Code- Most common causes?

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    Re: C4000 SC548 Error Code- Most common causes?

    Quote Originally Posted by PressingPrintz View Post
    Any idea where the thermoswitch located on this one?


    Sent from my iPhone using Tapatalk
    If you are referring to what I think you might be, it is located as part of the IH coil assembly and the last I heard is that Ricoh only sells the completed IH coil assembly.

    See this thread for a little more information. Ricoh MP C4000 - error code SC582

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