Question about HP Officejet Pro K850 InkJet Printer
I need to open a HP Officetjet Pro to fix the door/lid switch. How do i, without breaking, open the printer.
I had the same problem. Chatted with HP technician who indicated the repair would cost more than a new printer. I asked for access to service manual but was told there is none. I was able to fix it myself by using a hacksaw blade to cut across the dark plastic bridge area that hides the open cover sensor. After removing this section of plastic I was able to see the wiring plug attached to the faulty sensor. All you have to do is jumper the two colored wires together (ignore the black wire) and the cover open error will go away. Make sure you clean out all the debris you created from cutting out the plastic section before powering it up. I placed a clean rag inside the printer under this area before cutting to catch most of the plastic "sawdust." It wasn't pretty, but it was better than throwing the printer away and buying a new one. It didn't take more than a few minutes to fix, and with the cover down, you don't even know it's been "hacked."
Posted on Jul 19, 2010
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Posted on Jan 02, 2017
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