Zack,
The resetting of the itb is done with a flag that intersects a sensor in the back part of the itb cavity. That flag moves from left to right as the itb turns for the first time when power is applied or the side door is closed. Hard to explain as I do not have pictures, but there is a white gear that has a protusion sitting next to it. It will be positioned on the right side of the gear. You need to move the gear on the opposite side (front) to make that protusion come down and you want to position it to left side of the gear so just a bit of it shows. Now when you insert the itb and close the door or turn the power on, the itb will turn and that protusion will move from left to right and in the process intersect the sensor telling the printer a new belt has been installed. Keep in mind when I refer to left and right it is the position when the belt is in the machine. Most times when you work on it you will have it outside the printer and will have it turned over so right becomes left and left becomes right. Hope you understand.
The resetting of the itb is done with a flag that intersects a sensor in the back part of the itb cavity. That flag moves from left to right as the itb turns for the first time when power is applied or the side door is closed. Hard to explain as I do not have pictures, but there is a white gear that has a protusion sitting next to it. It will be positioned on the right side of the gear. You need to move the gear on the opposite side (front) to make that protusion come down and you want to position it to left side of the gear so just a bit of it shows. Now when you insert the itb and close the door or turn the power on, the itb will turn and that protusion will move from left to right and in the process intersect the sensor telling the printer a new belt has been installed. Keep in mind when I refer to left and right it is the position when the belt is in the machine. Most times when you work on it you will have it outside the printer and will have it turned over so right becomes left and left becomes right. Hope you understand.