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Scott Wasmer Posted on Apr 03, 2007
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Fiber path not being found.

We use these cards with the Optical Path, not the copper. We never change the dip switch settings. We have had several of these cards fail where the card does not recognize the Fiber link, and tries to go out on the copper link. It is almost as if the dip switch had been set to the copper setting. Any idea if the switch's go bad? Or is the driver chip from the switch to the FPGA bad? Anybody ever try changing that chip? Any other ideas?

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  • Expert 274 Answers
  • Posted on Sep 30, 2007
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Joined: Jul 14, 2007
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Have you checked the optical connections for dirt? Have you tried cleaning the optical connections? Did you do that correctly? Many people don't know there is a correct way and a wrong way. If you have any doubts about cleaning the connectors let me know and I will give a link to how to do it correctly. Do not use "Dust Off". You'll damage the connectors.

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Which type of fibre optic is used with multimode fibre

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Hi and welcome to FixYa, I am Kelly.
This almost sounds like the door safety optics near the bottom of the door is not working or the optics path is blocked with something. Check the path between the 2 sensors for any obstructions. You may or may not see the red optics light path between sensors as some of these are infra red.

If the path is clear start looking at optics wiring near the sensors and all the way to the opener terminal board for any signs of damage. If all of that appears fine... then your probably going to have to replace the up/down limit switch assy.

Before you get too deep into all of the above... if the door senses a jam as in it has to drive with excessive force it will do exactly as it is now. Bent door rollers... something hanging down from the ceiling blocking door movement in the UP direction.
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Even for professionals some of these can be very time consuming to isolate and repair. (you can tie up as much money in repair labor costs as it would cost to replace the opener. Since you did not indicate how old your unit was or the exact garage door opener model number, the response above is very generic. I am not telling you to replace your opener. Only advising you of what can be high repair costs.

If your not that mechanically inclined I would call a garage door installer and ask that if he can not repair your opener what would be the replacment cost. Negotiate a diagnosis / repair cost vs replacement cost over the PHONE. Explain the symptoms and see what they say. (Call more than one before making a commitment!) Expect to hear all of the answers I mentioned above.

Thanks for choosing FixYa,
Kelly
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Ricoh uses Optical sensors in most of their equipment so you will be lookind for what looks like 2 LEDs close together in the paper path or a actuator of some sort in the paper path that goes back to a black U shaped device (another type of optical sensor). Start in the area that you found the paper and work your way back to the tray. Since it is optical, even dust or a tiny piece of paper can cause a jam light to stay on.
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