This product complies with the RoHS directive for the European market. This product uses Lead Free solder.SERVICE MANUAL© 2012-9 PRINTED IN JAPANB53-7032-00 (Y) 672NX-720H(G)/720HVHF DIGITAL TRANSCEIVERPanel assy(A62-1200-03)Badge(B43-1675-04)Key top(K29-9479-01)Modular jack(E58-0535-05)CONTENTSGENERAL ....................................................2SYSTEM SET-UP .........................................4REALIGNMENT ...........................................4INSTALLATION ............................................7DISASSEMBLY FOR REPAIR .....................9CIRCUIT DESCRIPTION ...........................11COMPONENTS DESCRIPTION ................17PARTS LIST ...............................................19EXPLODED VIEW ......................................29PACKING ...................................................30TROUBLE SHOOTING ..............................31ADJUSTMENT ...........................................35TERMINAL FUNCTION .............................56PC BOARDDISPLAY UNIT (X54-3830-10) ...............60TX-RX UNIT (X57-8230-1X)....................62INTERCONNECTION DIAGRAM...............66SCHEMATIC DIAGRAM ............................67BLOCK DIAGRAM .....................................78LEVEL DIAGRAM ......................................81OPTIONAL ACCESSORIESKRA-40..................................................82SPECIFICATIONS ................. BACK COVER