Location of the Serial Number
29-Mar-2017
8203475000
Solution
Serial number (found on the label on the back side of the machine)
LBP654Cx / LBP653Cdw
LBP613Cdw / LBP611Cn
NOTE
Checking the serial number from the operation panel
- Select <Status Monitor> (
) 
<Device Information>/<Device Status> <Serial Number>.