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  1. #11
    Service Manager 1,000+ Posts theengel's Avatar
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    I did one of these today in 2 hours. That's a record for me.

    I noticed that the solenoid is on a plate that looks like it can be removed without taking off the drive unit. I'm going to try, later on, and see if it can be done. If so, you'd only need to take off the top power supply, and not the main drive unit. Save at least 45 minutes.


  2. #12
    Service Manager 1,000+ Posts
    HP CLJ CP4525dn Error 59.fo intermittent


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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    I did a fuser drive yesterday, machine booted, calibrated and to ready but coded during the first print.

    I did the S9 sensor check and alienation check in diagnostics. Everything seems to be ok. I turned the belt by hand and watched the white flag move around.

    I do hear a 2 second long ratchet noise when I start the printer, but honestly I have no experience on this model so I don't know if that's normal or not.

    I guess I could try the belt itself or better yet toss this thing.
    Crap!


  3. #13
    Senior Tech 250+ Posts
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    I do hear a 2 second long ratchet noise when I start the printer....

    I've heard the same thing. I seem to remember hearing that on all of these engines, so, I think that's normal.


  4. #14
    Senior Tech 250+ Posts
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    Just finished replacing the fuser drive assembly on one of these beasts! I was in no hurry. I took two days to get it done. Told the customer I'd get it back in a week or two (taking into account work load and vacation). I'll be taking this back tomorrow.

    Scotty: A good engineer is always a wee bit conservative, at least on paper.



  5. #15
    Sharp & HP Tech 100+ Posts austonrush's Avatar
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    I just finished replacing a fuser drive assembly on a HP MFP M575c, same error. I was able to get it done in just over 3 and a half hours. It's no NEWBIE job.

    For anyone wanting to do this repair make sure you have the service manual as you'll need it to adjust the main drive cams to the correct position in order to reinsert it properly!


  6. #16
    Service Manager 1,000+ Posts theengel's Avatar
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    And don't be afraid to take pictures as you disassemble.


  7. #17
    Senior Tech 250+ Posts
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    Re: HP CLJ CP4525dn Error 59.fo intermittent

    How do I get so lucky to get an account that wants to have these fixed? This is now the 2nd within a month and a half.

    I still take my time.


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