The serial number can be found on the label on the back side of the machine. LBP664Cdw LBP622Cdw/LBP623Cdw The serial number for both models is a four letter prefix followed by six numbers.
Paper Jams in a Paper Source Remove the jammed paper according to the procedure that matches the location at which a paper jam occurred. LBP664Cdw LBP622Cdw
Paper Jams in the Main Unit Remove the jammed paper according to the procedure that matches the location at which a paper jam occurred. LBP664Cdw LBP622Cdw