Kenwood FM Transceiver TK-481 Service Manual

Also see for FM Transceiver TK-481: User manual Instruction manual Specifications Instruction manual Service manual

© 2001-3 PRINTED IN JAPANB51-8408-20 (N) 1015800MHz/900MHz FM TRANSCEIVERTK-480/481SERVICE MANUALGENERAL ............................................................ 2SYSTEM SET-UP ................................................ 2OPERATING FEATURES .................................... 3REALIGNMENT ................................................. 11CIRCUIT DESCRIPTION .................................... 14SEMICONDUCTOR DATA ................................ 20DESCRIPTION OF COMPONENTS .................. 23PARTS LIST ....................................................... 24EXPLODED VIEW ............................................. 30PACKING ........................................................... 31ADJUSTMENT .................................................. 32TERMINAL FUNCTION .................................... 40PC BOARD VIEWSDISPLAY UNIT (X54-3210-XX) .................... 41TX-RX UNIT (X57-5630-XX) ......................... 47SCHEMATIC DIAGRAM ................................... 53BLOCK DIAGRAM............................................. 57LEVEL DIAGRAM (TK-480) .............................. 59LEVEL DIAGRAM (TK-481) .............................. 60KNB-16A/17A (Ni-Cd BATTERY) ..................... 61KPG-36 (PROGRAMMING INTERFACE CABLE) .... 61KSC-19 (CHARGER) .......................................... 61SPECIFICATIONS .............................................. 62CAUTIONWhen using an external power connector,please use with maximum final module pro-tection of 9V.CONTENTSREVISED IIPhoto is TK-480/481 K2 type.(Produced in Singapore)This service manual applies to products with 30100001 orsubsequent serial numbers.Knob (PTT)(K29-5157-03)Whip antenna(T90-0636-25) : TK-480(T90-0640-25) : TK-481Knob (ENC)(K29-5232-03)Knob (VOL)(K29-5231-03)Panel assy(A62-0981-04)Cabinet assy(A02-3659-03) : K2Badge(B43-1139-04)Packing(G53-0841-02) : K2