The serial number can be found on the label on the back side of the machine. MF236n MF232w The serial number is a three letter prefix followed by five numbers.
Scan from Display Panel on imageCLASS Printer w/ 5 line display Models Covered: MF113w, D570, MF232w , MF264dw, MF244dw Scan from Display Panel on imageCLASS Printer w/ 6 line display