 Hey guys, Kam here. Today, I'm going to talk about my favorite topic. We're going to talk about the absence of a main board, or I call it a motherboard. That's from my age. We're going to focus on the wiring of the motherboard. So where does the wire come from? What are those wires for? How can we correctly attach them to the motherboard? Oh, main board. I was a computer programmer. Master degree in computer science from University of Illinois. And just recently, I started picking up an electron engineering. I feel that electron engineering is more fascinating because programming, you're kind of doing things, you don't see it, but the double E, you actually see the things that you program. It's really cool. We're going to use a CD16 main board. Everything is clearly labeled. The R is resistor. C is capacitor. And the C is the connection. So today, we're going to focus on the connection. So you can see there's a CN73. So that's connection 73. Also, it tells you the contact points color. Y is yellow. So you need to put a yellow plug here. CN73 is for the EDF solenoid. Just below it is CN32 white. And that's for the scanner's motor. CN33 is the EDF motor. CN30 is the CR motor, carriage motor. And the CN71 is for your EDF encoder and EDF dock sensor. CN70 is the FFC cable to the scanner. Remove the ground wires and you should be able to take the scanner off. OK. Not many things left. After we took out the scanner. And now we're going to remove this big CN20, which is the buzzer and the LED panel. This CN53 is the sensor if the door is open or not, the door trigger. In the back of the motherboard, you get the connection 4142 and 4143. 4142 they are connected to the printed one cable for each side. And then 4133 is for the reading of the ink chip level. And this really long, thin cable is for the star wheels or called pizza wheels, which has the photo ink sensor, PS sensor. It goes to CN45. And this wireless card connects to CN9. Oh, by the way, the power goes into CN51. That's why you'll see so many capacitors and detectors near it. Connection 44 is going to run a long cable, connect to a really card, and goes to your maintenance box. This CN5 goes to your fax module. CN52 goes to the infamous PE module. The PE sensor. This is where the fake paper jams come from. The CN51 is for the paper feed PF encoder. And CN55, the black one, is for detecting the first cassette, and see if the trace is inserted or not. And down below 56 is detecting the second tree. CN30 goes to the motor. That's moved printed around the CR motor. CR54 goes to the pickup encoder. That's connected to the motor that pick up the paper and spin it to the upper deck. And the motor is powered by this CN34. And CN31 goes to the PF motor, the page feed motor. OK, I can't believe I made under five minutes. I hope this is a good reference for your project. I'm going to go a little bit deeper in the next few videos. I'm going to dig inside that there are encoders, including how to program encoders. And eventually you can make a DTG or any kind of printer you want. Cheers!