Alinco_DR-245A_维修说明书手册

TOMAHAWK 245Service Manual DR-245ACONTENTSSPECIFICATIONSPARTS LIST1)GENERAL322.232)TRANSMITTER2Main Unit.…23-263)RECEIVER......Vco Unit......26CIRCUIT DESCRIPTION DR-135Mechanical Parts.261)Receiver System ..........3,4Speakef2.T2)Transmitter System......4Packing Parts.273)PLL Synthesizer Circuit5,6ADJUSTMENT4)CPU and Peripheral Circuits...6.71)Adjustment Spot.....285)Power Supply Circuit...........72)VCO and RX Adjustment Spedfication...............96)M3826M8L270GPXA0819)8-103)Tx Adjustment Specification..............29SEMICONDUCTOR DATA4)RxTest Specification.301)M5218FPXA0068)..115)Tx Test Specification ....302)NJM7808FA(CXA0102)11PC BOARD VIEW3)TC4S66FXA0115)111)CPU Unit Side A (UP 0414)...314)TK10930 VTL (XA0223).122)CPU Unit Side B(UP 0414).....315)BU4052BF(XA0236).133)Main Unit Side A(UP 0414).326)TC4W53FU(XA0348)134)Main Unit Side B(UP 0414).......327)M64076GPXA0352)e e...14SCHEMATIC DIAGRAM8)LA4425AXA0410).151)CPU Unit......339)M68729(XA0591)152)Main Unit........341O)AN8010MCXA0119)16BLOCK DIAGRAM3511)NJM2902(XA0596)1612)24LC32AXA0604)1713)S-80845ALMP-EA9-T2(XA0620)...1714)L88MS05TLXA0675)1715)Transistor,Diode,and LED Ontline Drawings......1816)LCD Connection (TTR3626UPFDHN)8EXPLODED VIEW1)Top and Front View192）Bottom View.203)LCD Assembly...ALINCO,INC.