SERVICE MANUALThis product complies with the RoHS directive for the European market. This product uses Lead Free solder.K2 version © 2011-10 PRINTED IN JAPANB51-8992-00 (Y) 330NX-300(S)UHF DIGITAL TRANSCEIVERDoes not come with antenna. Antenna is availableas an option.GENERAL .................................................................. 2SYSTEM SET-UP ....................................................... 3REALIGNMENT ......................................................... 4INSTALLATION .......................................................... 6DISASSEMBLY FOR REPAIR ................................... 7CIRCUIT DESCRIPTION ......................................... 11COMPONENTS DESCRIPTION .............................. 17PARTS LIST ............................................................. 19EXPLODED VIEW .................................................... 30PACKING ................................................................. 31TROUBLE SHOOTING ............................................ 32ADJUSTMENT ......................................................... 36TERMINAL FUNCTION ........................................... 54PC BOARDCONTROL UNIT (X53-4432-75) ......................... 62TX-RX UNIT (X57-7830-11) ................................ 66INTERCONNECTION DIAGRAM............................. 70SCHEMATIC DIAGRAM .......................................... 72BLOCK DIAGRAM .................................................. 86LEVEL DIAGRAM ................................................... 90OPTIONAL ACCESSORIESKNB-47L (Li-ion Battery Pack) ......................... 91KNB-48L (Li-ion Battery Pack) ......................... 91SPECIFICATIONS ................................ BACK COVERCONTENTSKnob (Selector)(K29-9408-13)Knob (Volume)(K29-9407-03)Helical Antenna(KRA-23: option)Badge(B43-1645-04)Knob (PTT)(K29-9405-03)Plastic cabinet assy(A02-4116-03)Button knob(SIDE1,2)(K29-9406-03)