Alinco_DR-620_维修说明书手册

DR-620Service ManualCONTENTSSPECIFICATONS15)BR24C64F-E2XA0669)...151)GENERAL.216)LC75884WXA0899)..162)TRANSMTTER.217)M51132FP(XA0900)173)RECEIVER318)M30620 FCAGP (XA0913XA0949)..….17-19CIRCUIT DESCRIPTION19)M38503M2H667FPXA0914)…20-211)VHF Reception.420)M64076AGP(XA0915)..222)UHF Reception.......521)S-816A50AMC(XA0925.233）FM Reception..522)NJM78M05DL1A(XA0947)...234)VN (VHF-VHF)Dual Reception..623)Transistor,Diode,and LED Outline Drawings....24~255)U/U (UHF-UHF)Dual Reception..........624)LCD Connection26-276)VHF Squelch Control6EXPLODED VIEW7)UHF Squelch Control....61)Front View.......8)Transmit Signal Path.......2)Bottom View299)VHF Transmit Signal PathPARTS LIST10)UHF Transmit Signal PathFront Unit...................30-3111)VHF Tx APC Circuit .....LED Unit......3112)UHF Tx APC Circuit8Main13）)VHF PTT Circuit.…….8Mechanical Parts.4214)UHF PTT Circuit.8Packing Parts.....4215)VHF PLL.....8Accessories(Screw Set)4216)UHF PLL....9ADJUSTMENT17)Power-on Circuit.....91)Adjustment Spot.....43SEMICONDUCTOR DATA2)Adjustment Mode.....441)M5218FPXA0068)103)VHF Adjustment Specification.........452)NJM78LO5UA(XA0098)104)UHF Adjustment Specification ....463)NJM7808FAXA0102)….105)VHF Test Specification474)TC4S66F(XA0115)116)UHF Test Specification……485)AN8010M(XA0119)11PC BOARD VIEW6)BU4052BFXA0236)111)Front Side A497)TA75S01F(XA033222)Front Side B…498)TC4W53FUXA0348)…123)Main SideA..509)TA31136FNXA0404).124)Main Side B.5110)A4425A(0XA0410)…13FRONT SCHEMATIC DIAGRAM5211)NWM2904V(XA0573).13MAIN SCHEMATIC DIAGRAM5312)NJM2902V-TE1(XA0596)13FRONT BLOCK DIAGRAM.5413)S-80845ALMP-EA9T2(CXA0620)MAIN BLOCK DIAGRAM5514)TK10931(XA0666)14ALINCO,INC.