This Head Board is suitable for Roland XC-540, XJ-540 / XJ-640/ XJ-740 printers. This board is the original Roland part (number 6700731100 replacing 6700311110).
 
Printer compatibility
Roland LEC-300
Roland LEC-300a
Roland LEC-330
Roland LEC-540
Roland LEJ-640
Roland XC-540
Roland XC-540mt
Roland XJ-540
Roland XJ-640
Roland XJ-740