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  1. #1
    Technician John Sasser's Avatar
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    HP(CLJ)8500DN--Fusing unit error,even when replaced with a new one

    What would be the most probable cause of this printer NOT firing up the fuser unit? These fuser units work in other printers of the same model when swapped.

  2. #2
    Senior Tech 100+ Posts
    HP(CLJ)8500DN--Fusing unit error,even when replaced with a new one

    Northwestservice's Avatar
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    try some board swapping in hp they call it the formatter board

  3. #3
    Service Manager 1,000+ Posts
    HP(CLJ)8500DN--Fusing unit error,even when replaced with a new one

    prntrfxr's Avatar
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    Formatter??? for the fuser? I maybe wrong, but I don't think so. A bad LVPS will cause a 50 error if the fuser is good. If the fuser is not heating up, that's where I'd go next.

    RH3-2185-000CN 110V Power supply
    RH3-2187-000CN 220V Power supply

    They are not cheap. You might consider a refurbished one or get your client to update their machine.
    Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

  4. #4
    Technician John Sasser's Avatar
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    Im going with you 1st. Im replacing that whole lower box unit now.

  5. #5
    Technician John Sasser's Avatar
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    you are the MAN thankyou Sir,

  6. #6
    ALIEN OVERLORD 2,500+ Posts fixthecopier's Avatar
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    Ha, Ha Ha, I can not picture you as being "The Man" , prntrfxr.
    The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

  7. #7
    Service Manager 1,000+ Posts
    HP(CLJ)8500DN--Fusing unit error,even when replaced with a new one

    prntrfxr's Avatar
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    I am the woMAN.... yay! LOL. I have learned not to take it personally.
    Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

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