The controller board is a circuit board that contains a microprocessor, memory, and other electronic components. It is responsible for receiving data from the computer, processing it, and sending it to the laser unit.
The controller board also controls the other components of the printer, such as the paper feed mechanism and the print head.
When you send a document to the printer, the controller board receives the data from the computer and stores it in memory. It then processes the data and sends it to the laser unit. The laser unit uses the data to create an image of the document on a photosensitive drum.
The photosensitive drum is then transferred to the print head. The print head applies toner to the drum, which is then transferred to the paper.
The controller board also controls the other components of the printer, such as the paper feed mechanism and the print head. The paper feed mechanism moves the paper through the printer, while the print head applies toner to the paper.
The controller board is a critical component of the printer. It is responsible for controlling all of the printer's components and ensuring that the printer produces high-quality prints.