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They are cheap in USA, but when I look them in Europe prices are with postage 80-100 euros to Finland. Trying to find shop what has them in stock and have fast shipping method available. I dont like waiting parts :D
That sensor is called multi sensor and its located in carriage unit near the paper. It detects leading edge and width of the paper. It consist of four leds (two infrared) and two light receiving sensors. There are two pcb's inside carriage unit, headrelay and carriage relay. I put picture here...
I'm not sure if the sensor is the problem.
It's really hard to test it when I dont have any schematics about sensor (Cant probably get it anywhere) and those bulges covered IC type. As I said I carefully scraped where the bulges were and now I see metal inside IC.
If it was glue I think I...
It's sensor for Canon ipf 9100 printer. Nothing was stuck to the IC, I am sure of that. Is there any way to know it is glue? It certainly seems like part of IC.
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