Technics-STHD301-tun-sch 电路图 维修手册.pdf
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1、A 1 2 34 5 6A Ca A AM ANTAM OSC 1 2 34 5 6 Z101 12345678910 20191817161514131211 X IN CE DI CL DO AM LW SDC STRQ FMIF IN MONO AM IN FM IN VDD PD A IN A OUT Vss X OUT Z120 FM FRONT END (RAL0035) L102 0.68uH L101 0.68uH R110 1K C107 0.047 R112 100K C108 8.2P C136 1000P A B C D L103 0.47uH R111 390 R12
2、8 82 R129 27K C124 100P C112 0.01 R115 560 R116 1K C111 25V4.7 D101 MA4051MTA R113 10K C133 27P C134 27P X103 (7.2MHz) R117 68K C130 6.3V100 C132 1000P C113 1000P R132 10K R133 1K R138 10K R130 10K R137 1K R136 1K R135 1K R134 1K ABCD C125 16V22 R114 5.6K C110 0.01 A B C D E F IC102 LC72131MDTLM PLL
3、 FREQUENCY SYNTHESIZER AM ANT EXT LOOP FM ANT (75ohm) JK101 SCHEMATIC DIAGRAM 1 TUNER CIRCUIT R103 100 C101 0.01 C102 16V100 2 3 4 5 6 7 8 2SC2996 BUFFER AMP 2SC2996 BUFFER AMP 2SK360 FM OSC 2SK238 RF AMP 1 22P 15P 1P 18P 0.47uH 8P 100K 0.022 2.7K47P 3P 33K 100K 8P 8P 10K10K 22 33K 33K 100K 8P 0.022
4、 100 330 7P 4P 22P 1P 4P 220P 1.5M 10K 1uH 220 0.022 0.022 150 2P 18P 1.2K 33P 470K 16V100 15P 330 2SC2620 FM MIXER FM/AM F=7.2MHz 2.1V P P F 522kHz1629kHz 0.9V 4.6V AM V FM/AM F=7.2MHz 1.9V P P 2.6V (3.8V) 2.9V0.9V0.9V5.2V2.5V0V4.1V0V (0V)(2.5V)(0V) 2.6V0V0V0V1.2V3.7V3.7V0V0V (14.8V)(4.2V)(0V) :POS
5、ITIVE VOLTAGE LINE :FM SIGNAL LINE :FM OSC SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE F 87.5MHz108MHz 8.1V FM V 1.6V RadioFans.CN 收音机爱 好者资料库 13 2 CN102B CB 242322212019181716151413 123456789101112 FM IF IN AM MIX OUT REG AM IF IN GND SD ST FM DET Vcc STRQ FM/AM MONO OSC OUT OSC AFC AM RF IN AGC
6、 AM OUT DET OUT PILOT IN MPX IN PILOT OUT Rch Lch Z102 1 2 3 4 6 1 2 3 10K 10K B ADFC E R127 470 C122 50V1 R122 2.7K C121 50V0.47 C123 50V1 R131 68 C149 0.1 C147 1000P R125 1.5K R126 1.5K C148 0.01 R124 270 X102 AB C106 0.01 C126 0.047 C127 16V22 C129 6.3V100 R119 10K C117 0.018 C141 50V1 R141 1K R1
7、45 100K C143 4700P B A C144 4700P R146 100K R142 1K C142 50V1 C118 0.018 C1374700P C131100P R123 68K C138 0.01 C120 16V10 R121 22K C139 4700P R102 4.7K C119390P C116 0.033 R143 22K C11525V4.7 R12047K C109 1000P C114 50V3.3 R118 3.3K A D B C R104 10K C103 0.01 R109 330 C104 1000P R105 470 CF201 R106
8、470K 13 2 CF202 IC101 LA1833MN TLM FM/AM IF AMP, DET/AM OSC,MIX/FM MPX Q106 UN4111TA POWER SUPPLY (FM:ON) CN101B 1234567 +B(2) SD STEYE VT +B(1) T.GND AB CL DO DI Lch OUT CE Rch OUT B A DA 1234567 DET NC ToCONNECTOR CIRCUIT (CN101A) on SCHEMATIC DIAGURAM-4 E ToCONNECTOR CIRCUIT (CN102A) on SCHEMATIC
9、 DIAGURAM-4 E R140 4.7K Q110 2SC3311ARSTA SWITCHING R139 3.3K SCHEMATIC DIAGRAM 2 Q102 2SC2787LTA FM IF AMP Q101 2SC2787LTA FM IF AMP R108 470K C105 1000P R107 330 FM 0.12V P P (0V) 0.7V (0V) 12V (0V) 14.7V 0V (14.8V) 14.8V (4.2V) 3.7V2.2V2.2V1.7V2.1V2.1V2.1V1.9V1.9V (5.7V) 5.2V (2.1V) 0V (0.3V) 3.2
10、V 2.1V5.2V (5.7V) 2.1V2.1V0V0V0V (4.7V) 3.4V (4.1V) 5.2V (5.7V) 3.7V (1.1V) 3.9V (3.5V) 14.8V 7.3V FMLINE+B :POSITIVE VOLTAGE LINE:FM SIGNAL LINE:AM SIGNAL LINE:AM OSC SIGNAL LINE 7.3V1.6V 3V (1.9V) (1V) (0V) 0.7V (0V) 12V RadioFans.CN 收音机爱 好者资料库 B M FL701 (RSL0273 F) A AXB C D E F G HIJKLN O P Q R
11、S T U V WB C D E F ARB C D E F G HIJKL M N O P Q IC701 M30218MAA103 FL DRIVE / SYSTEM CONTROL APXB C D E F G HIJKL M N OWVUTSRQAC DB N E M L K J I H G F LKIJ A D F E C B C A B Q702 2SD1819ATX FL DRIVE G F 47K 10K HAG F E D C B 13 2 X701 (10MHz) R782 100K 12 3 4 5 6 R781 100K 12 3 4 5 6 7 8 9 10 C782
12、 50V1 C712 0.1 C713 50V10 R734 100K R733 100 C781 50V1 R727330 R726330 R725100 R7241K R7521K R7531K R7541K R7551K R7561K R7571K R758100 R759100 R7040ohm R7231K R7221K Q701 UN5214TX RESET D701 D701 MA111TX C705 0.1 R703 100K D705 MA111TX R708 820K C709 16V10 R7011K C710 0.01 R751 10K C707 6.3V1000 C7
13、06 0.1 C711 0.1 L701 C7150.1 C7170.01 C7180.01 C7160.1 R738100 R75010K R74610K R74710K R74810K R74910K R7421K R7411K R7401K R7391K C704 50V2.2 O P Q R FL CIRCUIT FL DISPLAY 136789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
14、50 51 52 53 545759 C792 6.3V100 AB R710 1K R70210K X702 (32.7KHz) C703 20P C702 18P 515253545556575859606162636465666768697071727374757677787980 123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 41 32 42 33 43 34 44 35 45 36 46 37 47 38 48 39 49 40 5081 82 83 84 85 86 87 88
15、 89 90 91 92 93 94 95 96 97 98 99 100 P67/FLD7 P66/FLD6 P65/FLD5 P64/FLD4 P63/FLD3 P62/FLD2 P61/FLD1 P60/FLD0 VEE P107/AN7 P106/AN6 P105/AN5 P104/AN4 P103/AN3 P102/AN2 P101/AN1 AVSS P100/AN0 AVCC VREF P51/FLD9 P52/FLD10 P53/FLD11 P54/FLD12 P55/FLD13 P56/FLD14 P57/FLD15 P00/FLD16 P01/FLD17 P02/FLD18
16、P03/FLD19 P04/FLD20 P05/FLD21 P06/FLD22 P07/FLD23 P10/FLD24 P11/FLD25 P12/FLD26 P13/FLD27 P14/FLD28 P15/FLD29 P16/FLD30 P17/FLD31 P20/FLD32 P21/FLD33 P22/FLD34 P23/ FLD35 VSS VCC P25/FLD37 P26/FLD38 P27/FLD39 P30/FLD40 P31/FLD41 P32/FLD42 P33/FLD43 P34/FLD44 P35/FLD45 P36/FLD46 P37/FLD47 P40/FLD48 P
17、41/FLD49 P42/FLD50 P43/FLD51 P44/TXD0 P45/RXD0 P46/CXL0 P97/CLKOUT P96/DA1/SCLK22 P95/SCLK21 P94/SOUT2 P93/SIN2 P92/SSTB2 P91/SBUSY2 P90/SRDY2 CNVSS P87/XCIN P86/XCOUT /RESET VSS XOUT XIN VCC P85/INT5 P84/INT4 P83/INT3 P82/INT2 P81/INT1 P80/INT0 P77/TA4IN/TA2OUT/CLKS1 P76/TA3IN/TA1OUT/CLK1 P75/TA2IN
18、/TA0OUT/RXD1 P74/TA1IN/YA4OUT/TXD1 P73/TA0IN/TA3OUT P72/TB2IN P71/TB1IN P70/TB0IN P50/ FLD8 P47/ CST0 RST0 P24/ FLD36 D711 MA111TX R783100K R784100K R785100K R786100K SCHEMATIC DIAGRAM 3 22.2V 4.9V 22.2V 16.7V 20.3V 22.3V 14.7V 9.2V 20.3V 18.5V 20.2V 14.8V 13V 9.4V 5.6V 9.4V 15V 0V 0.3V 0V 0.6V 0V 0
19、V 11.2V 16.6V 13.1V 9.5V 11.3V 9.3V 15V 24V 18.5V 18.5V 9.4V 13.2V 4.7V 22.2V 0V 18.7V 20.4V 7.7V 11.2V 5.9V 5.9V 5.9V 5.9V 22.3V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 22.2V 24.6V 0V 0V 4.9V 4.9V 4.9V 4.8V 0V 0V 0V 0V 1.1V 4.7V 0V 0V 0V 0V 0V 4.7V 4.7V 4.7V 0V 0V 0V
20、 0V 4.6V 4.1V 4.5V 0V 4.2V 1.4V 3.5V 2.4V 2.2V 3.8V 0V 4.8V 0V 0V 0V 0V 0V 4.7V 4.8V 4.9V 4.7V 24.6V 2.2V 2.4V :POSITIVE VOLTAGE LINE:NEGATIVE VOLTAGE LINE 24V 4V T7.2ms. 0V T7.2ms. 24V 4V 0V 5V 0V T36ms. F=10MHz 1.4V P P 0V 5V T27ms. 0V 5V T27ms. 0V 5V T27ms. RadioFans.CN 收音机爱 好者资料库 C CAB A C B A B
21、 C E C A B D A B G D A C B E F CN701B L E A F G H CN702B D C B I J K 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CN101A CN102A T.GND +B(1) VT STEYE SD +B(2) 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 CN104B CN103B Rch IN CE Lch IN DI DO CL CN105B 1 2 3 4 5 6 7 JK201 Lch Rch OUT JK201 Lch Rch EXT/M
22、D CN703B CN703A 12345 12345 L702 L703 L704 L707 L706 R760 1K D706 1SS380TE 17 R706 1K C708 0.01 D704 1SS380TE 17 D703 1SS380TE 17 R728 1K R730 10K C209 1000P R206 1K R205 1K R202 1K R201 1K C203 100P C201 100P C204 100P C202 100P C206 100P C205 100P R208 100K R207 100K R204 100K R203 100K D E DET NC
23、 R709 1K R729 1K SCHEMATIC DIAGRAM 4 OPERATION CIRCUIT IN/OUT TERMINAL CIRCUIT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ToTUNER CIRCUIT (CN102B) on SCHEMATIC DIAGURAM-2 A ToTUNER CIRCUIT (CN101B) on SCHEMATIC DIAGURAM-2 A CONNECTOR CIRCUIT C471 0.047 C472 0.047 IN S608 (CLOCK/ TIMER/ DEMO) R608 1K R609 820
24、R607 1.2K Z601 RCDGP1U26XD (REMOTE SENSOR) C601 0.01 R606 1.5K R605 1.8K R604 2.2K R603 3.3K R602 4.7K R601 6.8K S610 (PLAY) L S609 (REC) L S607 (SET) S606 () S605 () S604 (TUNE MODE) S603 (AUTO/MONO) S601 (AM) TUNE/ TIME ADJUST 213 V GO R721 15K S602 (FM) 7.3V 14.8V 4.9V :FM SIGNAL LINE :AM SIGNAL
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