编号40：建伍KENWOOD-TK-270(N)-278(N)-278TRevised_B51-8320-10维修图纸手册

VHF FM TRANSCEIVER/甚高频调频无线电收发机KENWOODTK-270/N/278/N/278TSERVICE MANUAL/维修手册REVISED/修订版1997-7 PRINTED IN JAPANB51-8320-10(B)1003This service manual is same as the TK-270/278(B51-8320-00)service manual with destinations K,M,K2,andM2,with the exception of the new destinations,(N)K,(N)M,(N)K2,(N)M2,TM,and TM2.本维修手册与TK-270/278(B51-8320-00)相同带有终点K,M,K2及M2,新终点(N)K,(N)M,(N)K2,(N)M2,TM及TM2除外。Antenna(T90-0381-05):K2T90-0450-05):K(T90-0615-05):M2,TM2T90-0616-05):M,TMKnob(CHANNEL SELECTOR)K29-5167-03)Knob (VOL)(K29-5168-03)CONTENTSGENERAL...REALIGNMENT........4DISASSEMBLY FOR REPAIR40CIRCUIT DESCRIPTION ......43Plastic cabinetSEMICONDUCTOR DATA .......…53Knob (PTT)-(A02-2091-03)(K29-5069-12)DESCRIPTION OF COMPONENTS59PARTS LIST..........63DisplayEXPLODED VIEW ...…71(B38-0755-05)PACKING72ADJUSTMENT.....…73PCBORD VIEW6KeypadTX-RX UNIT(X57-4850-XX)Component side view ......87(K29-5067-02)TX-RX UNIT (X57-4850-XX)Foil side view ...........898TX-RX UNIT (X57-4850-XX)Component side view+Foil side view..91SCHEMATIC DIAGRAM..93BLOCK DIAGRAM…97LEVEL DIAGRAM99KNB-14/KNB-15A (Ni-Cd BATTERY)..100PHOTO is M,M2 TYPESPECIFICATIONSBACKCOVERCAUTION:When using an external power connector,please use with maximum final moduleprotection of 9V.