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Thread: Just Curious

  1. #1
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    Just Curious

    Attached is a photo of a modular jack pcb off of an IR1025if copier.

    There is a component I tried to find out what it is on the upper right side of the photo.

    I have replaced a few of these boards over the years due to failures.

    Not looking to buy a component and fix them. The PCB is cheap and still available. I just can't find

    any information on that part. It is labeled as AR2 and that does not come up on google searchs.

    Any Ideas?
    Attached Images Attached Images

  2. #2
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    Just Curious

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    Re: Just Curious

    Quote Originally Posted by RHodg57 View Post
    Attached is a photo of a modular jack pcb off of an IR1025if copier.

    There is a component I tried to find out what it is on the upper right side of the photo.

    I have replaced a few of these boards over the years due to failures.

    Not looking to buy a component and fix them. The PCB is cheap and still available. I just can't find

    any information on that part. It is labeled as AR2 and that does not come up on google searchs.

    Any Ideas?
    ummmm Check your PARTS MANUAL?

  3. #3
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    Re: Just Curious

    The parts manual does not show components only the pcb. But Thanks..

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    Re: Just Curious

    discharge tube

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    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Just Curious

    No printing on that tube?
    Whatever

  6. #6
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    Just Curious

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    Re: Just Curious

    Quote Originally Posted by RHodg57 View Post
    Attached is a photo of a modular jack pcb off of an IR1025if copier.

    There is a component I tried to find out what it is on the upper right side of the photo.

    I have replaced a few of these boards over the years due to failures.

    Not looking to buy a component and fix them. The PCB is cheap and still available. I just can't find

    any information on that part. It is labeled as AR2 and that does not come up on google searchs.

    Any Ideas?
    It's an electronically controlled relay is my best guess.
    "You can't trust your eyes, if your mind is out of focus" --

  7. #7
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Just Curious

    Its a surge absorber.
    Helps for high voltages above 3.5KV. For lightning.
    Whatever

  8. #8
    Senior member of CRS 2,500+ Posts
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    Re: Just Curious

    Like a fuse, I suspect.

    Thank you, allen, I stand corrected.
    Last edited by ZOOTECH; 03-21-2020 at 08:34 AM.
    "You can't trust your eyes, if your mind is out of focus" --

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    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Just Curious

    Can be compared to a MOV(metal oxide varistor) I think. a MOV has a high resistance in normal conditions and will reduce its resistance as the voltage goes over line voltage.
    Almost the opposite of a fuse. Will close a path between live and neutral/earth if the voltage gets to high.
    That closed path will cause a fuse on the live side to blow. After the surge the fuse can be replaced and all should be well.

    Not entirely sure how the glass tube does its thing as the circuit its in is a 48V low current circuit.

    Hey i was not far off found this.
    Gas Discharge Arrestors | HowStuffWorks
    Whatever

  10. #10
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    Re: Just Curious

    Okay Thanks!!

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