SERVICE MANUALThis product uses Lead Free solder.This product complies with the RoHS directive for the European market.© 2009-3 PRINTED IN JAPANB51-8866-00 (N) 443NX-210VHF DIGITAL TRANSCEIVERGENERAL................................................................... 2SYSTEM SET-UP ....................................................... 3REALIGNMENT ......................................................... 3INSTALLATION.......................................................... 6DISASSEMBLY FOR REPAIR .................................... 8CIRCUIT DESCRIPTION .......................................... 12COMPONENTS DESCRIPTION............................... 18PARTS LIST ............................................................. 20EXPLODED VIEW .................................................... 31PACKING.................................................................. 32TROUBLE SHOOTING ............................................ 33ADJUSTMENT ........................................................ 36TERMINAL FUNCTION ........................................... 58Does not come with antenna. Antenna is availableas an option.PC BOARDDISPLAY UNIT (X54-3660-10) ........................... 66TX-RX UNIT (X57-7710-10) ............................... 70INTERCONNECTION DIAGRAM ............................ 74SCHEMATIC DIAGRAM .......................................... 76BLOCK DIAGRAM .................................................. 88LEVEL DIAGRAM ................................................... 91OPTIONAL ACCESSORIESKNB-31A (Ni-Cd Battery Pack) ......................... 92KNB-32N (Ni-MH Battery Pack) ........................ 92KNB-33L (Li-ion Battery Pack) .......................... 92SPECIFICATIONS .................................................... 93CONTENTSKnob (Selector)(K29-9305-03)Knob (Volume)(K29-9304-03)Main cabinet (18 key)(A02-4076-01)Helical Antenna(KRA-22: option)Badge(B43-1606-04)Knob (PTT)(K29-9302-33)Packing (18 key)(G53-1823-11)