Basic block diagram The CPB processes most jobs at the scan engine and sends the data to the print engine in the form of hardware ready bits (HRB). The formatter performs three processing tasks: n-up, book copying, and image rotation. When one of these tasks is performed, data is sent to the formatter in PCL-XL format. The formatter sends a scan command to the CPB after it receives a scan command from the control panel by way of the dc controller. The CPB then sends a scan command to the scanner controller board (SCB). The SCB generates the image data and sends the image data back to the CPB which, in turn, passes the image back to the formatter.
Depending on the original request from the control panel (n-up, book copying, or image rotation), the formatter completes the processing. The data is then passed to the dc controller for printing, or is passed to a computer for digital sending. Scan engine Scanner controller board Copy processor board Control panel Formatter Computer DC controller Print engine Figure 41. Basic block diagram 72 Chapter 5 Theory of operation C8523-90921