Question about HP OfficeJet 7410 All-In-One InkJet Printer
I'll do my best to be more precise, however the problem happened today at the office so I won't be able to link images, since I'm home now.
If you remove the back part of the printer (in our case it also had a module for 10x15cm prints) by pushing on the sides, you'll discover a couple of hexagonal screws. You don't necessarily need an hexagonal screwdriver to remove them: a slotted one , if it's a small one, is enough. Once you remove the two screws on the sides of the back panel (they are at the sides of the part where the paper usually moves during the print operation), you'll be able to pull the back panel, and uncover a small logic board with at least 6 connections on it. It's on the left side of the printer , if you look at it from the back.
First of all, there is no "card" to be removed, since it is placed somewhere in the printer but it's not connected directly to the board: the cables, however, are the ones that connect the different components of the printer (display, scanner, etc...) to the logic board. There are 2 main kinds of connections: "flat" wires ("buses") and ribbon cables, usually made of wires of different colors tied together: these usually end with a white connector.
By trying them, I found out that the "flat" cables are the ones that are needed to operate the display and the front panel buttons, while the white-ending cables are responsible for connecting the scanner and , presumably, the wireless card, among others. I had to remove almost every cable I found, because the (supposed) wireless connector is hidden by some of these cables: it's in the upper part of the logic board, it's one of the smallest connector and, if I recall correctly, it's the only one that is wrapped into black rubber covering. I removed all the cables by pulling using my fingers (be sure not to cut them, especially the flat ones are quite fragile!!). Once you unplug that cable, be sure to reconnect all the others in the correct place. Reconnect the power supply to the printer: it worked for me, and I didn't even lose my settings!
If by accident it happens that the display won't turn on, or the front panel buttons don't work, this means you didn't reconnect the cables properly, or that you unplug the wrong cable.
Hope it helps!
Posted on Jun 24, 2008
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Posted on Jan 02, 2017
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