 Hey guys, this is Kevin. Today we're going to solve this problem that the printer has a cartridge problem and the cartridge is missing or not damaged. Usually it's caused by you didn't click the cartridge in the slot, so you didn't push it down enough. On the bottom of the cartridge, there's a computer chip. If that chip doesn't have a good contact with the printer, the printer cannot read, so that's why it says missing. If you still have problem, it's probably this cable is bad. So this cable come in from here and go all the way to the front of the assembly. Check out the video link above to see how you take off the scanner. And quite frequently Don't pay attention to those two big cables. If something wrong with the big cable, it will show you that the printer is damaged, but it's this little cable here. And sometimes those get worn out or doesn't have a good connection. If the cable is worn out, it's very easy to tell because you're going to see those pins either halfway missing or completely missing. And to get a replacement cable, you can go to bchtechnologies.com and go to printer parts and go to HP FFC cable and those flat cable called FFC cable. You will need this four pin 0.5 millimeter pitch. Pitch is the distance between the pins. So this four pin and if it's damaged, you're going to see one of those or like more multiple of those missing halfway missing. So this one is a good cable. You don't have to take the whole carriage out. I'm just use this as an easier demonstration. You can do it inside the printer. And you can see the data get released in here and it go all the way to the front. And the all pins are good. And this is a good one. So I just use this as a demonstration how to replace it. To replace it, we need to take this cover off and this cover has a hook. Then have two tabs. You need to push those two tabs to the front. So one here and one here. For some reason, I found that the Phillips screwdriver do this the best. So the upper one and the lower one. By the way, when you're doing it, use your finger. Bend the top cover to your left and it'll help you to release the tab. When you install, just push the hook to the slot and push the tab in or lock in place. When you install, remember the shining part of the cable is towards your right. And the white part of the cable is towards your left or towards outside. If you're not sure which side goes, just take a closer look of the base. You can see the middle part is on the right. That's why the shining part should towards right. So this cable looks okay. And so the next thing we're going to try is to replace the motherboard. Okay, you can get this motherboard from bchtechnology.com and put a link there. And also I'm going to show you how to order it. We'll go back to bchtechnology.com and go to printer parts and scroll down to HP and electronic board and assembly. And here is the 8022 motherboard. Okay, here's another experiment. This is an 8022 printer, but I'm going to try 8025. I have lots of 8022, but my theory is they're the same motherboard. Just look the same. So I'll swap it and the same works and it'll be exciting. Everything is here so it's pretty easy to swap. So I disconnect the power. Okay, those two, the big cable. So here, so make sure you get both of those little cables. One is narrower, one is bigger. Remember the blue side is up toward the sky and the same thing here, the blue side. Oh, I forgot there's a screw here, so you have unscrew it. So once you unscrew it, there's a tap here, just there's a tap here, and there's a tap here, tap here. Use counterfeiters, that's good because I mean this is the way HP scare you and they tell the kids use, so they detect the cartridge that's used. Okay. And they don't say we detect some use cartridge, they tell you like we take some use and counterfeit, so just scare you. Just okay, so done this. Oh, what's the problem here? Oh, okay, classic mistake. Okay, take a good shot here. This is normally caused by a darker cable is not between the reader. I'm terrible at installing this cable, I'll ask a second hand to do that. You might have to push those back cables down some to be able to. There it is. Wow, okay. That should be in it now. This is what the cable should look like, it's between the readers. However, for this one, although it's in the correct position, it still cannot read its position, so it turns out that it has a bad carriage and we have to replace the whole carriage. I don't want to bore you over the details how to install the carriage. Basically, this video is about if the cartridge can not be read and what you want to troubleshoot is the cable that goes to the reader and also maybe there's something wrong with your motherboard. Okay, I hope this video helps. Please visit us at www.bchtechnologies.com or locally, Greensboro, North Carolina. Cheers.