Technics-SHEH-790-E-Schematics电路原理图.pdf

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1、121110987654321 A B C D E F G H SH-EH790(E) FL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM-1 A 1256789 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 4346 47 FL DISPLAY 44 4549 50534854 123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

2、 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 515253545556575859606162636465666768697071727374757677787980 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 KEY1 KEY2 SP IN SP A SP B SP C SA CS DSP RST DSP CS DSP SNS DSP ACK DSP CK DSP DO DSP DI JOGA JOGB CNVss RESET NC NC

3、Vss X IN X OUT Vcc NC NC LED CFO LED CFG BR93 DATA BR93 CS BR93 CK SYNC SA REQ SA CK SA DO SA DI LED SSS LED DPL LED SPO LED SPG LED 3DO LED 3DG LED MRO LED MRG LED VRO LED VRG P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 P33

4、P34 7G 6G 5G 4G 3G 2G 1G VEE CD & DECK DI CD & DECK DO CD & DECK CK NC CD REQ DECK REQ CD & DECK CS AVss VREF REG IN0 REG IN1 FL CIRCUIT A B C D E FL601(A2BD00000041) F GHIJKL M N O PWR S TU VYQXZ R623100K C606 470P C607470P C608220P X601 (4MHz) 13 2 n m kjihfedbaZY X IC601 C2BBGF000434 SYSTEM CONTR

5、OL/ FL DRIVE HIJK L M N O P Q RTV W X Y ZabdeghSUfijm npqrt R622 100K R6812.2K Q601 UN4211TA RESET R6061K R6031K R6021K R601 1K R607220 R608220 R619 680 C602 6.3V1000 C610 0.01 C611 50V3.3 D605 MA165TA C613 16V22 C628 16V22 C612 16V22 C627 16V22 NOTE: The number which noted at the connectors on the

6、schematic diagram as SCHEMATIC DIAGRAM-1 or SCHEMATIC DIAGRAM-2 indicates the schematic diagram serial number located on the left corner in the schematic diagram. C601 0.1 L601 10H D601 1SS291TA R6820R611100 R609 2.2K R6103.3K R6161K R617 1K C609 0.01 D604 1SS291TA R618 100K R604 10K R605 10K D603 1

7、SS291TA D602 1SS291TA D655 D654 C603 1000P R613 5.6K R614 1K R6151K R667 47K A B C D E F G A B C D E F G H I J K L M N P S T U V W R676 100K R675100K R677100K R678100K R679100K R680100K R671100K R672100K R673100K R674100K npqrtmjih g fedba O Q R r q p D652 MA165TA C615 35V33 C614 16V10 D610 MA165TA

8、D609 MA165TA R662 1K C625 6.3V100 R664 330 R663 330 C616 35V33 R686 0 C604 1000P C605 35V33 MA165TA MA165TA g C626 0.047 IC602 M62457AFPE1 SPEANAAMP 1 2 13 3 4 5 6 7 8 9 10 11 12 2 1 3 4 5 6 7 8 FW602B DSP DIO SP INPUT DSP CK DSP ACK DSP RST DSP SNS DSP CS A.GND CD REQ CS S CLK S DATA DECK REQ SYNC

9、FL2 FL1 SA DATA SA CLK CS/ REQ D.GND +B(5.6V) ToMAIN CIRCUIT(FW601A) on SCHEMATIC DIAGRAM-5/40-A,B B FW601B ToMAIN CIRCUIT(FW602A) on SCHEMATIC DIAGRAM-2/9-H B C620 50V0.1 C621 50V0.1 R648 100K R649 100K C622 0.1 R650 100K R651 1K C623 0.1 C618 0.01 C619 0.01 D606 MA165TA R624 180 R625 180 R626 180

10、R627 180 R628 180 R629 180 D617 SML79455C (SUPER SOUND EQ) D616 SML79455C (CENTER FOCUS) D615 SML79455C (VIRTUAL REAR SURROUND) D614 SML79455C (MULTI REAR SURROUND) D613 SML79455C (SEAT POSITION) D612 LNJ301MPUJAD (DOLBY PRO LOGIC) D611 LNJ301MPUJAD (SUPER SURROUND) R655 10K R654 10K R653 4.7K R652

11、4.7K R657 47K R661 22K D607 MA165TA R660 47K D608 MA165TA R656 10K R659 4.7K R658 4.7K Q602Q603 Q604 Q602-604 2SC3311ATA INTERFACE R636 2.2K R635 1.8K R634 1.5K R633 1.2K R632 1K R631 820 S606 (VIRTUAL REAR SURROUND) S605 (CENTER FOCUS) S604 (SUPER SOUND EQ) S602 (DOLBY PRO LOGIC OFF/ ON) S601 (DISP

12、LAY MODE) R642 2.2K R641 1.8K R640 1.5K R639 1.2K R638 1K R637 820 S603 (SUPER SURROUND) S611 () S610 () S609 () S608 () S612 (SUPER 3D AI EQ) S613 (SEAT POSITION) S607 (MULTI REAR SURROUND) 9101112131415 ANF A OUT CNF C OUT DIF OUT IREF VREF Vcc2 Vcc A B C ENB GND1 GND2 PH OUT 87654321 16 g N M B A

13、 P q p r k h i j Q R m n TUCDEFGHIJKL Z a b f d e R691 220 R692 220 Q605,606 UN5211TX LED DRIVE Q605Q606 R668 2.2K V R647 22K C624 0.01 S 321 S614 (MULTI JOG) YX (JOY STICK) R666 47K R665 47K R6121K W O :NEGATIVE VOLTAGE LINE:POSITIVE VOLTAGE LINE -27V 5.6V 0V 4.7V 2.1V 1.3V 4.4V 1.7V 1.7V 0V 0V 0V

14、0V 0V 0V 0V 0V 0V 0V -22.1V -22.5V -22.2V -22.2V 0V 0V 4.6V 4.8V 2.3V 2.3V 4.7V 0V 4.8V 4.8V 0V 0V 0V 4.8V 0V 4.6V 4.8V 4.8V 0V 2.3V 2.3V 1.5V 1.3V 4.8V 0V 1.7V 4.9V 1.9V 2.1V 3.2V 2.7V 0V 1.2V -27V -24.9V -22.5V -21.8V -22V -22.5V -22.3V -22.5V -21.9V -26.9V -26.9V -26.7V -29.1V -29.1V -29.1V -29.1

15、V -28.2V -24.4V -29.2V -29V -20.9V -17.2V -19.6V -20.6V -20.4V -29V -29.1V -29V -28.1V -26V -26.8V -28.8V -25.3V -28.4V -28.8V -26.7V -22.1V -18V 3.4V P-P F=4MHz 3.6V P-P F=4MHz 0V 4.8V T12ms. 0V 4.8V T290s. 0V 4.8V T12ms. 0V 4.8V T16ms. 1.2V 4.4V T16ms. 0V 4.8V T16ms. -30V 4V T16ms. 0V -30V 4V 0V T

16、16ms. 5.6V 5V 5V2.3V2.3V1.5V5V0V 2.5V2.5V2.5V2.5V2.5V1.5V2.4V 4.6V 4.9V 1.9V0V 4.9V 0V 0.5V 0V 0.5V 1.2V 0.4V 2.7V 121110987654321 A B C D E F G H SH-EH790(E) MAIN CIRCUIT DIAGRAM SCHEMATIC DIAGRAM-2 R106 12K R108 3.3K R107 3.3K R105 12K R103 1K R104 1K Lch Rch OUT Lch Rch IN JK102 JK102 C132 100P C

17、131 100P JK101 Lch Rch FRONT JK104 Lch Rch SURROUND JK104 R115 8.2K R116 8.2K R118 5.6K R117 5.6K C137 100P C138 100P R119 5.6K R120 5.6K R122 8.2K R121 8.2K C139 100P C140 100P IC201 NJU7313AMT2 SIGNAL SELECTOR B C A CKDATA STVss 302928272625242322212019181716 123456789101112131415 NC NC VEE VDD 12

18、345678 12345678 MAIN CIRCUITB C215 47P C214 47P C213 47P R212 2.2K R102 100K R101 100K C134 100P C133 100P VCR(EXT) Lch Rch AUX (DVD) C136 100P C135 100P R114 12K R113 12K R112 3.3K R111 3.3K BC CENTER SUB WOOFER JK105 R125 5.6K R126 8.2K R124 10K R123 8.2K C141 100P C142 100P Q P W R128 1K C143 100

19、P R127 100K C109 16V10 SUB WOOFER OUT JK103 E101 IC202 NJM4558MTE1 BUFFER AMP C208 50V4.7 C207 50V4.7 C206 33P R210 82K C204 330P R208 27K R206 56K C203 330P C205 33P R209 82K R207 27K R205 56K C210 0.01 R211 2.2K IC203 BU4053BCFE2 SIGNAL SELECTOR 1234 5678 C202 330P C209 0.01 C212 0.1 C211 0.1 C216

20、 0.01 C217 0.01 R220 100K CB AX0X1VDD GVssINHZ0Z1Y1Y0 161514131211109 12345678 R B S G H I J T A C201 330P R204 2.2K R203 2.2K DVD 6ch INPUT D201 MA4056MTA R219 390 A M N R214 2.2K R250 2.2K R213 2.2K R249 2.2K K L R258 5.6K R256 4.7K V U R253 0 R255 4.7K R257 5.6K R131 0 R132 0 X Y R254 0 L101 FW60

21、2A DSP DIO SP INPUT ToFL CIRCUIT(FW602B) on SCHEMATIC DIAGRAM-1/11,12-D A 82345671 E DFC B A DSP CK DSP ACK DSP RST DSP SNS DSP CS A.GND R403 680 X401 (8MHz) R431 10K R414 1K C404 6.3V47 C403 0.01 R415 1K R411 1K R410 220 R409 220 R417 220 R408 220 R406 220 R407 220 20 19 18 17 16 15 14 13 12 11 10

22、9 8 7 6 5 4 3 2 1 2122 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Vcc VREF AVss NJ ST ECK/ NJCK EDA/ NJDT DCS SENSE DACK DCK DDO DDI NODSW3 NODSW2 GND SW1 ECS RESET X IN X OUT A B INH EXP26 DO CK CS2 RST2 CS1 RST1 EXP27 EXP11 EXP12 EXP13 EXP14 EXP15 EXP16 EXP17 VssEXP18 41 42 C401 0.022 R

23、404 100K R405 220 C402 0.01 D A B C E F R425 4.7K R426 4.7K R429 4.7K R424 1K R421 100 R420 1K R419 100 R432 1K AB A B C A B C H D C O F E D IC401 C2BBFD000246 SYSTEM CONTROL R402 100K 1 2 3 E L401 10H R430 10K C C R903 120K :NEGATIVE VOLTAGE LINE:POSITIVE VOLTAGE LINE:CD PLAYBACK SIGNAL LINE 0V0V0V

24、0V0V0V0V0V0V0V0V-10.4V 9.4V0V0V0V0V0V0V0V0V0V0V0V0V -10.4V 9.4V 0V0V0V 0V0V0V -10.4V0V0V0V0V 5.7V0V0V0V5V5V5V 9.4V -10.4V 5.1V 0V 5V 5V 5V 5V 5V 0V 4.8V 0V 5V 5V 5.1V 5.1V 0V 0V 0V 4.6V 0V 4.8V 0V 0V 0V 5V 4.8V 2.2V 2.2V 0V 1.9V P-P F=8MHz 1.7V P-P F=8MHz 131415161718192021222324 SCHEMATIC DIAGRAM-3

25、 IC801 C2HBZC000010 DIGITAL SIGNAL PROCESSOR C805 1 C809 0.01 MAIN CIRCUITB C818 680P C839 50V1 R824 120K R825 120K C838 50V1 C835 6.3V47 C816 0.1 C834 6.3V47 C8336.3V47 C819 680P L804 C825 50V4.7 R806 270 C808 0.01 R820 1K R819 1K R818 1K C832 50V4.7 C831 50V4.7 R827 0 R817 1K C830 50V4.7 R816 1K C

26、828 50V4.7 C829 50V4.7 R815 1K C827 50V4.7 C820 50V4.7 R804 270 R805270 C821 50V4.7 C823 6.3V100 C8226.3V47 C8246.3V47 C806 2200P C807 2200P R836 1.5K R835 1.5K C804 0.1 R801 220 R802 1M X801 (36.8MHz) C801 12P C802 5P C803 1000P AB R830 4.7K C837 16V10 R834 22K C826 50V4.7 C815 0.022 R809 330 R8103

27、30 R812 330 R811 4.7K C814 1 R808330 R814 100K L801 L802 C813 0.01 C8120.1 C811 0.022 R807 270 C810 0.01 R829 2.2K C836 16V10 R833 22K R823 330 R821 330 D C B E A BEDFG U V L S K G C 123456789 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 41424344454647

28、4849505152535455565758596061626364 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 GND AR VDX XI XO GND X NC GND A1 AI1 AO1 NC AOT1 NC VDA12 AOT2 AO2 NC AI2 GNDA2 NC VRO1 VRI NC VRO2 GND A3 AI3 AO3 AOT3 VDA34 NC AOT4 NC AO4 AI4 NC GND A4 NC VDDR GND R SYNC ELRI/ O NC DIN2 NC DIN1 DIN0 NC DOUT VDD / RST

29、 NC / CS IFCK IFDI IFDO GND / ERR I2CS TST0 NC LIN4 RIN4 RIN3 RIN2 RIN1 NC GND AL OUTL VRAL VDAL VDAR VRAR OUTR80 NC TST1 NC NC LIN3 LIN2 LIN1 EBCI/ O A L807 R803 100 R898 0 JI R813 4.7K SH-EH790(E) MAIN CIRCUIT DIAGRAM IC802 C2HBZC000008 DIGITAL SIGNAL PROCESSOR R863560 R867 560 C871 2200P C C867 5

30、0V1 R854 18K C854 16V10 C852 2200P R855 39K C853 16V10 C851 2200P C8636.3V47 C862 470P R860 56 C861560P C864 6.3V47 RG C896 0.022 R861 100K C895 0.022 R874 330 C894 0.022 FEDCBA C858 0.1 C857 0.1 R881 100 C85650V4.7R8521K R8511KC85550V4.7 R859 10K C860 2200P C86650V1 R864560 C884 2200P C865 1 C872 2

31、200P C881 50V1 C8836.3V47 R876 270 C8876.3V47 C8866.3V100 C878 0.01 R871270 C879 2200P R872270 C880 2200P C869 0.01 C888 6.3V47 L806 123456789 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 50 5152535455565758596061626364656667

32、68697071727374757677787980 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 XI XO VDX GND AL AOL AOLT VRLR AILT VDAR AIRT AORT AOR GND AR GND AC AOC AOCT VRCS AICT VRO VRI VDASC AISLT AOSLT AOSL GND ASL GND ASR AOSR AOSRT AISRT VDASR NC TP0 TP1 TP2 TP3 TP4 NC VDDR GND R TP5 TP6 TP7 TP8 T

33、P9 TP10 TP11 TP12 FS CK00 CK01 GND TP13 MCK VDD TP14 TST15 EM0 EM1 STEP1 STEP0 /RST VDD SYNC ELR0 ELR1 EBC0 EBC1 D IN D OUT GND /CS IFCK IFD1 IFD0 IFOK /ERR I2CS BA1 BA0 BOOT NC TST0 TST1 TST2 TST3 VDM VRM1 M IN M OUT VRM2 GNDM VSAL L IN AVRL VDL VDR AVRR R IN VSAR GNDX H R890 10K R889330 R888330 C8

34、97 0.022 C898 6.3V100 C891 0.01 C893 0.01 R8821M C8996.3V47 R891 2.2K R868 560 C868 50V1 C892 6.3V47 C87350V1 C87450V1 R870 270 R869 270 C876 50V1 C875 50V1 R892 2.2K R900 0 R858 10K R857 10K W PFG R877 22K R878 22K EF R875 270 C882 50V1 C859 50V4.7 R856 0 L814 R880 2.2K R879 2.2K C877 0.01 L811 D L

35、822 L821 G C870 6.3V100 R873330 L808 10H :POSITIVE VOLTAGE LINE:CD PLAYBACK SIGNAL LINE 5.1V 5.1V 5.1V 2.5V 0V 0V 5.1V 2.5V 2.5V 2.6V 5.1V 2.6V 2.5V 2.5V 2.5V 2.5V 0.6V 5.1V 5.1V 5V 5V 0V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 5.1V 5.1V 2.5V 2.5V 4.6V 1.9V 1.9V 2.5V 2.5V 2.6V 5.1V 5.1V 2.6V 2.5V 2.

36、5V 2.6V 2.5V 2.4V 0.7V P-P F=36.8MHz 2.3V P-P F=36.8MHz 5.1V 5.1V 5.1V 5V 5.1V 2.5V 2.5V 2.5V 2.5V 2.5V 0.6V 5V 5V 0V 5.1V 5.1V 2.5V 2.5V 2.5V 4.3V 2.5V 2.5V 5.1V 5.1V 2.5V 2.5V 1.9V 2.1V 4.8V 2.5V 2.5V 2.4V 5.1V 2.4V 2.5V 5.1V 2.5V 2.5V 2.5V 2.5V 5.1V 5.1V 5.1V 5.1V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.

37、5V 2.5V 2.5V 2.5V 252627282930313233343536 SH-EH790(E) MAIN CIRCUIT DIAGRAM SCHEMATIC DIAGRAM-4 IC301 M5218AP BUFFER AMP A B 1234 5678 IC302 NJM4558MTE1 BUFFER AMP C D 1234 5678 Q313,314 2SD2144STA ATTENUATOR F C305 100P R315 270K C307 10P C303 50V4.7 C310 0.01 C306 100P R316 270K C308 10P C309 0.01

38、 C304 50V4.7 R314 3.9K R310 560 R308 1K R307 1K R309 560 R313 3.9K R306 1K R305 1K R304 22K R303 22K C301 50V4.7 C302 50V4.7 Q301,302 2SD2144STA MUTING Q301 Q302 Q303 Q304 Q303,304 2SD2144STA ATTENUATOR R349 12K R352 10K D301 MA700ATA R353 220K C329 16V22 R348 2.2K R325 1K R327 560 C313 16V10 C315 1

39、00P C317 5600P R329 560K R335 1K R336 1K R338 470 R322 8.2K R334 56K R323 12 R324 12 R326 1K C328 16V22 R328 560 C314 16V10 C316 100P R330 100K C318 47P R332 2.2K C320 16V10 R350 10K C327 0.033 D302 MA165TA R351 220K C323 0.01 C324 0.01 R319 150K C312 16V22 R318 100 Q306 UN411FTA ATTENUATOR CONT. Q3

40、05 UN411FTA MUTING CONT. C311 16V10 R317 22K R312 1.8K Q309 Q310 Q307 Q308 Q307,308 2SD2144STA ATTENUATOR A B R354 3.3K R347 1K R345 1K R346 1K Q313 Q314 Q309,310 2SD2144STA ATTENUATOR L301 3.3H R311 22K MAIN CIRCUITB R331 2.2K C319 16V10 R337 390 L302 3.3H E C321 16V10 R372 0 R333 56K C322 16V10 R3

41、74 0 O R866 22K N A B C IC303 NJM4558MTE1 BUFFER AMP C345 100P R365 180K C347 22P C343 16V10 R361 6.8K R359 820 R360 820 R363 1K R364 1K C346 100P R366 180K C348 22P C352 0.01 C344 16V10 R362 6.8K Q315 Q316 Q315,316 2SD2144STA ATTENUATOR 1234 5678 R368 470 R367 470 R357 22K R358 22K R504 120K C502 3

42、30P R503 1.2K 1234 5678 C503 100P Q502 UN411FTA ATTENUATOR CONT. R502 1K R509 2.2K R514 100 C510 16V22 Q501 UN411FTA MUTING CONT. IC501 NJM4558MTE1 BUFFER AMP C D G R517 820 R513 1K R515 22K C511 16V10 C504 100P R508 100K R506 2.7K C508 16V10 C501 0.01 C506 16V33 R505 1K R510 100K R511 1M C507 50V0.

43、47 R512 150K C512 16V33 Q505 2SD2144STA ATTENUATOR Q503,504 2SD2144STA MUTING Q503 Q504 F E C505 0.01 C351 0.01 R773 1K Q764 2SB621ARSTA REGULATOR C765 0.01 D763 MA165TA R769 1.2K D764 MA165TA C771 0.01 C766 16V10 Q765,767 2SC3311ATA STABILIZER Q765 R767 1K D767 MA4051MTA C768 16V10 Q767 R768 1.2K D

44、765 MA165TA D766 MA165TA C772 0.01 C767 0.01 D762 RL1N4003N02 C753 0.01 R761 2.2 R762 2.2 C761 0.01 Q761,762 2SD2137PQTA REGULATOR C763 0.01 R765 220 C764 10V220 R764 820 D761 MA4082LTA C762 0.01 Q763 2SD592AQRSTA REGULATOR R766 1.8K D304 MA719TA C354 16V10 D305 MA719TA C349 16V10 C350 16V10 R507 1M

45、 C509 16V22 D771 MA4051LTA Q506 UN411FTA ATTENUATOR CONT. R518 2.2K Q507 2SD2144STA ATTENUATOR D T D772 MA165TA R774 220 C774 16V220 R716 820 C773 10V220 Q761 Q762 Q766 2SA1309ATA REGULATOR C356 16V10 R772 1.2K R501 1.5K R520 1.2K L502 E D203 MA165TA D204 MA719TA I J R519 150K A B C Y X :NEGATIVE VO

46、LTAGE LINE:POSITIVE VOLTAGE LINE:CD PLAYBACK SIGNAL LINE 0V 0.6V 0V 0.6V 0V 0V 0.6V 0.6V 0V 0V 0V 0V 0V 0V 0V0V 0V0V9.4V -10.4V 0V0V 0V0V9.4V -10.4V 0V 0V 0.6V 0.6V 0.6V 0.6V 0V 0V 1.2V1.3V 0V 1.1V0.9V -10.4V 9.4V 5.1V 9.4V -10.4V 0V 0V 0.7V 0.7V1.8V1.8V 0V 0V0V0V 0V0V9.4V 0V0V-10.4V 0V0V9.4V 10.2V

47、10.2V 9.4V 7.2V 10V 7.8V 7.2V10.2V 7.8V 5.1V 5.4V 4.4V 6V 5.4V 5V 6V 5V 5.1V 5.4V 5.4V 4.4V 0.6V 0V 0.6V 0V 0.6V 0V 1.1V0.9V 0V -6.5V -7.3V5V -10.4V A B C D E F G H 373839404142434445464748 SH-EH790(E) MAIN CIRCUIT DIAGRAM SCHEMATIC DIAGRAM-5 C221 100P C222 100P R221 220 R222 220 E C233 100P Q A R23

48、9 47K B C D E D C A B F 20 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 I H G K J R234 1K C226100P R2331K C225100P I C232100P R228 6.8K R2305.6K A R2276.8K C231100P R229 5.6K C227100P R2351K R2378.2K B C228100P R236 1K R2388.2K H M J E201 SYNC CD

49、 REQ CT.GND CS +B(10V) D.GND SCLK DATA DECK REQ V.GND TAPE Rch IN TAPE Lch IN RS A.GND TAPE Rch OUT TAPE Lch OUT CD Rch IN A.GND CD Lch IN NC NC CN202 CN201 TUNER Lch/ C TUNER Rch A.GND Lch OUT Rch OUT +B(10V) SUR L S.W MIC -B(-10V) V.GND D.GND CS/ REQ CLK DATA CT GND SH FL1 SH FL2 SYNC SUR R To CD CHANGER(SL-EH790) & CASSETTE DECK(RS-DV290) R763 0.33 GF C223 16V10 C224 16V10 R223 22K R224 22K To TUNER/ AMPLIFIER(SA-EH790) MAIN CIRCUITB R2401K CD REQ CS S CLK S DATA DECK REQ SYNC FL2 FL1 SA DATA SA CLK CS/ REQ D.GND +B(5.6V) ToFL CIRCUIT(FW601B) on SCHEMATIC DIAGRAM-1/11,12-G A FW601A A B