This product uses Lead Free solder.This product complies with the RoHS directive for the European market.SERVICE MANUAL© 2008-4 PRINTED IN JAPANB51-8822-00 (N) 446NX-700/700HVHF DIGITAL TRANSCEIVERGENERAL.....................................................2SYSTEM SET-UP .........................................4REALIGNMENT ...........................................5INSTALLATION............................................7DISASSEMBLY FOR REPAIR ....................14CIRCUIT DESCRIPTION ............................17COMPONENTS DESCRIPTION.................23PARTS LIST ...............................................26EXPLODED VIEW ......................................39PACKING....................................................40TROUBLE SHOOTING ..............................41ADJUSTMENT ..........................................44TERMINAL FUNCTION .............................62PC BOARDDISPLAY UNIT (X54-3640-10) ...............72TX-RX UNIT (X57-7380-XX) (A/2) ........74TX-RX UNIT (X57-7380-XX) (B/2) ........78INTERCONNECTION DIAGRAM ..............79SCHEMATIC DIAGRAM ............................80BLOCK DIAGRAM .....................................98LEVEL DIAGRAM ....................................100SPECIFICATIONS ...................BACK COVERPanel assy(A62-1162-03)Key top(K29-9401-03)Cover(A01-2194-11)Microphone(T91-0639-35)CONTENTS