Alinco_DJ-446_维修说明书手册

DJ-446Service ManualCONTENTSSPECIFICATIONSEXPLODED VIEW1)GENERAL..,21)Front View......…152)TRANSMITTER..........22)Rear View ...........63）RECEIVER..2PARTS LIST17-22CIRCUIT DESCRIPTIONADJUSTMENT1)Receiver System3.41)Required Test Equipment ..23,242)Transmitter System......42)Adjustment Mode25-273)PLLSynthesizer Circuit4.5PC BOARD VIEW4)CPU and Peripheral Circuits5.65)M38267M8L258GP(XA0733)..6-8MAIN Unit..28,29BLOCK DIAGRAMSEMICONDUCTOR DATA301)NMJ2070MT1(XA021O)SCHEMATIC DIAGRAM.31,92)AT24C16N-10S1-2.7TER(XA0368)93)M5222FP-600C(XA0385).104)TK14521MTl(XA0515).115)M64076AGP(XA0352)126)NJM2904V-TE1(XA0573)…127)NJM2902V-TE1(XA0596)....128)S-81350HG-KD-T1(XA0724).139)）S-80845ALMP-EA9-T2(XA0620).1310）2SK2975(0XE0038).1311)Transistor,Diode,and LED Ontline Drawings......1412)LCD Connection (EL044)1ALINGO.INC.