 Hey guys, it's Kevin. Today I'm going to show you how to install and uninstall the motherboard from the WF-3640. I have a worksheet you can buy it, or you can just follow my video. On the worksheet at the screw icon means you have to remove some screws. And the hand means you have to remove or install something. So I'm going to remove the two screws on the fast cover. And then remove the fast cover. We're going to work on the scanner's wire. So get a hold of this bunch of wire. Just start pulling. At this time, you don't really worry about which wire is which. And just as long as it comes from scanner, just pull it off. This fat, juicy one is called an FFC cable. And you have two black ground wires secured up by our screw. The worksheet is separated into different sections. I suggest you use a different container for the screws for each section. So it'll be easier for you to do the installation later. And this FFC cable has go through an iron core. The iron core is glued on the board with double-sided tape. You can just use something to pry it out. And then remove the iron core. You can use some tape to temporarily tape them together. And this is all the wires coming from the scanner. And two screws on the scanner top. The second screw is a little bit deep. To remove the scanner, find that there's a tab right there. And use your thumb to move it towards your right, like that. Just bend it to the right. At the same time, close the scanner on your hand. Kind of smash your hand, and the whole scanner is going to come off. And you can take off the wires. OK, section two, and remove seven screws. One, take out this hinge. And the second screw is underneath the hinge. Three is inside that hole. Four is on the top. OK, five, there are two screws. Five is the bottom one, not the top one. Six is down the top again. And seventh is in the hole. Do not try to remove the cover until you make sure you get seven screws. Now you can see the cover is really loose. And just use your hand to go around. And just leave it a little bit by little bit, and it's going to come off. Now we're going to work on the bottom of the main board. Just pull off as many wires as you can. Don't worry about the sequence and which one is which. This thick, blue wire is the power. And you have a little FFC cable. And also you have a ground wire secure bare screw. Oh, just in case, you'll need to remove the power supply. And there's a screw on the power supply. And screw this, and the power supply going to slide right out. This is not necessary for the main board. I'm just showing it. OK, now you guys tell me what the workflow says. And you're going to also remove a big FFC cable, and then a wire, and then one ground wire. There are three things. And you're going to put the front panel away. Now we're going to work on this side cover. If you look straight down, that's where the screw is. And next to the screw hole, there's a plastic tab. And you can use your finger lift up tab. You can see this one is already loose. So just use your finger, lift it up, and the cover going to lose. Now just twist horizontally, and the cover should come off. You can see there's a tab on the bottom. And then this is the tab that you lifted. And the middle one is the screw hole. Twist, lift, and then remove. Now we have a three FFC with iron core. And then we have a really thin FFC. There are three FFCs and one wire. At this time, don't worry about the wire switch. And pay attention how you untangle it. The motherboard assembly is going to include that piece of black plastic. So you want to untangle them away from the whole thing. There are four screws secured motherboard. So there are three and four front ones. So just remove those two first. On the worksheet, number one, the bent one, is this one, this screw. I call it bent because after you remove it, if you're only going to swap these motherboard ones, you can bend the metal. However, that piece of metal is going to break after you bend it three, four times. So if you do this in long term, you should remove this screw and remove that metal piece. OK, number two, the deep one. If you look straight down, it's right there. And there's just one screw, so you can't miss it. Now the main board is loose. And remember, only thing holding is the wire or cable. Just take a look where the wire is. And remember, this FAT, the FF-C cable is from the fax. It's coming from the side. And also, you get this gray wire. And it needed to be pulled down to this kind of middle slot. It's right here. And then there's a black wire. You'll need to pull it up to that slot in the middle. OK, the FF-C cable is away and the tool wire is in the middle. And you'll push the fax unit back a little bit and jiggle it a bit. Oh, by the way, the box on your left does a fax unit. There are four screws on each corner to secure the top cover. Then you can remove the top cover with Wi-Fi card. And then there are four screws, two big ones. And there are two little ones on the USB ports. For the square USB port, you'll have a short and FAT one. And the skinny USB port, you have a long and skinny one. The long and skinny one, you'll need a number one Phillips screwdriver. And the FAT one, you can still use number two screwdriver. OK, it's getting long. I'm going to put the installation in the next video. Oh, by the way, let me show you where to get the workflow sheets. You don't really need it at uninstall. But when you install, you're definitely going to need a worksheet. You go to bchtechnology.com and go to printer parts. And under Epson, go to uninstall workflow. I believe don't share it on the file share or something. It really takes me a lot of time to develop this. As I said, you don't have to buy it. Everything is in the video. However, if you do want a hard copy, and I'll put the link about it too. OK, see you at the install. I hope you enjoyed this video. Cheers.