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  1. #1
    Technician
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    Sep 2018
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    HP color lj MFP477

    Hello,
    I have a HP color laserjet MFP 477, I took it apart to clean and lubricate because it was making very loud annoying noises when working.
    After I put it together I have the following problem: with black printing everything is ok, but with any color printing I have a blue background on the sheet.
    I am attaching a photo. I'm asking for help.
    Attached Images Attached Images

  2. #2
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    Sep 2018
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    Re: HP color lj MFP477

    Any ideas please!

  3. #3
    Technician
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    Nov 2019
    Location
    Fresno, CA
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    Re: HP color lj MFP477

    Check the flat cable going from the formatter board to the controller board. You may need to replace it (
    CF388-60116). One of the leads is folded over or not making contact.

  4. #4
    Technician
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    Sep 2018
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    Re: HP color lj MFP477

    I check the flat cable, looks good, I not touch it before.
    I try with new cyan toner cartridge, but so far all is without success!

  5. #5
    Technician
    Join Date
    Sep 2018
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    12
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    11

    Re: HP color lj MFP477

    Finally, I can thank the RMC8112 it was indicated that exactly this cable - CF388-60116.
    On one side it is just screwed in, and on the other side it has a lock, and right by the lock,
    it had come off barely perceptibly.
    Thanks a lot for the advice.

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