Sangean-ATS-803A_(Service-Manual维修手册电器原理图)

SANGEANServiceATS-803AATS-803AAM/FM DIRECT ENTRY COMMUNICATIONS RECEIVERCONTENTSSpecifications.......2-3Disassembly Instructions..4Block Diagram .....5Circuit Descriptions................6-12(1)IC402 -APD7503G-701 (One chip -com.)...........…6(2)Keyboard Matrix..6(3)Liquid Crystal Display (LD-BU 7140J)........(4)IC401-CX-7961A-1 (Frequency Synthesizer PLL).…7(5)IC101-PC1018C (AM/FM IF Amp)*,11(6)1C102一LA5003(Regulator)…(7)IC201-LA3361 (FM MPX Demodulator)...........11(8)IC202-TA7366P(Signal Strength,LED driver)12(9)IC203一M51521LUAL(Pre-Amp).......12(10)IC301-4PC1263C2/gPC1316C (Power Amp).1213-24(1)Alignment for Power Supply VoD..13(2)Alignment for Clock Time Accuracy.........14(3)Alignment for VC01 Voltage Range .........(4)Alignment for PLL Frequency.....…16(5)Alignment for AM 2nd Local OSC…17(6)Alignment for AM 2nd IF..........…18(7)Alignment for FM IF...19(8)Alignment for AM Sensitivity…20(9)Alignment for BFO.........21(10)Alignment for Signal Level Stop Level(11)Alignment for MPX ....23(12)Alignment for FM Sensitivity,2Troubleshooting Flow Chart...............25-27Wiring Diagram-Solder Side ......28P.C.Board Top Bottom Views....,29-33(1)PCB A-1 Top Bottom Views..29(2)PCB A-2 A-3 Top Views..…30(3)PCB A-2 A-3 Bottom Views31(4)PCBB&C Top Views.…32(5)PCB B C Bottom Views...............33Exploded View.….34Parts List for Exploded View....35-36Before Electrical Parts List.37Electrical Parts List..........38-52Tables of ICs'&Transistors'Voltage List....5358Semiconductor Lead Identiflcations59Schematic Diagram................60www.RadioPics.com