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  1. #1
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    Kyocera FS-1035 error C7990

    Hi, I have an error code C7990 on a Kyocera FS-1035 MFP. Can someone help me on translation and fix of this error?

    Thank you.

  2. #2
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    Re: Kyocera FS-1035 error C7990

    code C7990 on a Kyocera FS-1035 MFP.

    Waste toner full. The waste toner sensor has detected that the waste toner reservoir (drum unit) is full.

    Waste toner reservoir (drum unit) is full = Turn the power switch off/on to restart the machine. If the error is not resolved, replace the drum unit

    Defective waste toner sensor = Replace the waste toner sensor.

  3. #3
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    Re: Kyocera FS-1035 error C7990

    Hi, Thank you for your reply.

    I already changed the drum and image unit from another one we have here, and the error persist...

    The only thing I don't know where it stays, it's the sensor... can you give me some directions to find it for change it?

  4. #4
    Field Supervisor 500+ Posts DWise's Avatar
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    Re: Kyocera FS-1035 error C7990

    Fernando, you can probably contact Paul with JustManuals.com and get a Parts Manual and Service Manual for this model. You'll more than likely need them if you are going to service the printer.
    Do for one what you wished you could do for everyone. - Andy Stanley

  5. #5
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    Re: Kyocera FS-1035 error C7990

    it is located nearby the LSU-unit.
    the best way is to detach the complete scanner unit .

    have fun

    Quote Originally Posted by fernando View Post
    Hi, Thank you for your reply.

    I already changed the drum and image unit from another one we have here, and the error persist...

    The only thing I don't know where it stays, it's the sensor... can you give me some directions to find it for change it?

  6. #6
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    Re: Kyocera FS-1035 error C7990

    Quote Originally Posted by taskalfaman View Post
    it is located nearby the LSU-unit.
    the best way is to detach the complete scanner unit .

    have fun

    Thank you taskalfaman, I will try to have some Fun...

  7. #7
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    Re: Kyocera FS-1035 error C7990

    Have a fs 1028 same code its not the drum unit since it works in another machine. Please be a little more detailed about the sensor... location part #.....Is it next to the laser unit? I had the machine down to take laser unit out and didnt see it.

  8. #8
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    Re: Kyocera FS-1035 error C7990

    Doesn't matter if it worked in another machine. Take the drum unit out, open one of the sides and empty the waste toner. Restart the device after.

  9. #9
    Senior Tech 250+ Posts
    Kyocera FS-1035 error C7990

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    Re: Kyocera FS-1035 error C7990

    Quote Originally Posted by Joe Foe from Buffalo View Post
    Have a fs 1028 same code its not the drum unit since it works in another machine. Please be a little more detailed about the sensor... location part #.....Is it next to the laser unit? I had the machine down to take laser unit out and didnt see it.
    The waste toner tank is full, replace the drum unit (it's built into the drum unit).

  10. #10
    Trusted Tech 50+ Posts Alexkyocera's Avatar
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    Re: Kyocera FS-1035 error C7990

    Quote Originally Posted by Ctl-Alt-Del View Post
    The waste toner tank is full, replace the drum unit (it's built into the drum unit).
    The Drum unit has two opening on either sides, pull them with a small flat screwdriver and vacuum, restart the machine, enter maintenance mode and reset the counter and you shoud be good, if your drum surface isnt damage that is

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