编号42：建伍KENWOOD-TK-250_Revised_B51-8279-20维修图纸手册

VHF FM TRANSCEIVERTK-250KENWOODSERVICE MANUALREVISED1995-4 PRINTED IN JAPANB51-8279-20(B)1558This service manual is the same as the service manual(B51-8279-10)for TK-250(K,K2,M and M2 destina-tions except that this manual contains new items (T,Edestinations).Use it together with the previous service manual (B51-8279-10).CONTENTSGENERALAntennaDISASSEMBLY FOR REPAIR..9T90-7INSTALLATION.6REALIGNMENT*154611*CIRCUIT DESCRIPTION....16SEMICONDUCTOR DATA.........24DESCRIPTION OF COMPONENTS......31Knob(CHANNEL SELECTOR)PARTS LIST330K29-4920-03EXPLODED VIEW…40PACKING42TERMINAL FUNCTION.......43ADJUSTMENT............416416141*46PC BOARD VIEWSKnob(VOLUME)0K29-4918-03)VC0 UNIT(X:58-4130-10)…51VC0UNTX58-4290-50)m52TX-RX UNIT(X57-444X-XX)(A/3)..53BadgeTX-RX UNIT(X57-444X-XX)(B/3)....Knob(PTT)(B43-1100-04)TX-RX UNIT(X57-4442-71)(A/3)..61K29-4917-02TX-RX UNIT(X57-4442-71)(B/3).65TX-RX UNIT(X57-444X-XX)(C/3)....69SCHEMATIC DIAGRAM.......73Dressing panelA21-1544-03)BLOCK DIAGRAM…81Cabinet(A02-1829-01)LEVEL DIAGRAM83KDM-7(DTMF KEY PAD).84KHS-1 (HEAD SET WITH VOX PTT)........84KSC-76(MULTIPLE RAPID CHARGER).............86KSC-8(COMPACT CHARGER)..89KSC-86 (MULTIPLE CHARGER)...90KNB-11A/12A(Ni-Cd BATTERY)..93KPG-22(PC PROGRAM INTERFACE)............93SPECIFICATIONS..BACK COVER"Refer to parts list on page 33.CAUTION:When using an external power connector,please use with maximum final moduleprotection of 9V.