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When I turn the power on to my WF-3640 it starts beeping and flashing with message close cover then back to standby over and over never ending. I can shake it and it will work for a while then starts over. How do I access the sensor and clean it?
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@fredric2 sounds like issues with the “Cover Open Sensor”. Should be on the front lip of the top cover and may require a partial disassembly. This may come in handy. You are looking for something like this (different model of the WF shown)
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Thankyou, oldturkey03. After looking at the picture and link you supplied I was able to locate and clean the sensor. The sensor for the WF-3640 is just left of center on the front edge of the frame. There is a post on the cover that moves the contacter back when closed.
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