VHF FM TRANSCEIVERTK-280© 2000-4 PRINTED IN JAPANB51-8521-00(S) 553SERVICE MANUALGENERAL ................................................................................. 2SYSTEM SET-UP ..................................................................... 2OPERATING FEATURES ......................................................... 3REALIGNMENT ...................................................................... 16CIRCUIT DESCRIPTION ........................................................ 20SEMICONDUCTOR DATA ..................................................... 26DESCRIPTION OF COMPONENTS ....................................... 32PARTS LIST ............................................................................ 33EXPLODED VIEW .................................................................. 40PACKING ................................................................................ 41ADJUSTMENT ........................................................................ 42TERMINAL FUNCTION .......................................................... 52PC BOARD VIEWSDISPLAY UNIT (X54-3210-12) ............................................ 53TX-RX UNIT (X57-6192-70) ................................................ 59SCHEMATIC DIAGRAM ......................................................... 65BLOCK DIAGRAM .................................................................. 69LEVEL DIAGRAM ................................................................... 71OPTIONS ................................................................................ 72SPECIFICATIONS ............................................... BACK COVERCONTENTSCAUTIONWhen using an external power connector,please use with maximum final moduleprotection of 9V.Photo is E type with KRA-14Knob (ENC)(K29-5232-03)Knob (VOL)(K29-5231-03)Cabinet assy(A02-2055-53)(16 keys)Badge(B43-1106-14)Packing(G53-0896-02)(16 keys)Panel assy(A62-0535-04)Knob (PTT etc)(K29-5157-03)Helical antenna(T90-0680-05):T(T90-0695-15):EE VERSIONS