Technics-SAEH-790-E-Schematics电路原理图.pdf
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1、 From POWER TRANSFORMER 1 8 W501 2 3 4 5 6 7 9 12 13 14 15 16 17 18 A.GND +B(10V) SUR L SUR R 19 11 10 CT.GND SH FL1 DATA D.GND TUNER L/C TUNER Rch Lch IN Rch IN S.W MIC -B(-10V) V.GND CS/REQ CLK SH FL2 20SYNC +B5 Rch Rch -B3 To SOUND PROCESSOR BLOCK DIAGRAM C2BBFD000404 IC901 SYSTEM CONTROL / FL DR
2、IVE Rch 94 SH CS 97 SH CK 9596 SH DO SH DI SHSYNC 21 SH REQ SW CONT. 12 X0 X1 14 ABC 11109 G 8 2 13 BU4053BCFE2 IC201 SIGNAL SELECTOR 1 15 Y1 Y0 VDD 16 +B4 VSS 7 -B3 6 ST/AV. 6CH MUTING Q605 MUTING Q607 (Q608) 93 MUTE3 MUTING CONT. +B4 Q902 10 SEL/ TUNER MIC DET 25 +B8 SA-EH790(E,EB,EG,EP) BLOCK DIA
3、GRAM AM ANT FM ANT Z120 TUNER PACK (RAN0005EM-2) 8 (6) 3791110 DO 4 +B2 15 DET 2 +B1 CL DI CE SD LC72 CE LC72 DI/ST 345 LC72 DO 2100 SD LC72 CK FL1 FL2 Lch (Rch) GND +15V +7V SPEAKERS R ch PHONES VR901 (VOLUME) 2423 VR JOGA VR JOGB KEY SWITCH (S901915) 1920 KEY TU KEY KARAOKE Q901, D904 RESET 12 RES
4、ET +B8 90 VDD2 +B9 VDD1 VDD3 VDD4 184672 C2BBFD000404 IC901 SYSTEM CONTROL / FL DRIVE 29 REMO- CON Z901 (REMOTE SENSOR) +B8 18G 3037 P138 3845, 4750 5271, 7378 FL901 FL DISPLAY D933, D934 79 REGIN0 82 TIMER 83 S.W LED D951 (DIGITAL S.WOOFER) 81 STAND-BY D954 (PLAY/REC) D306 () 1621 GND 1047 5 1 (2)
5、6 3 20 15 19 (18) 26 (25) 23 24 RSN311W64B IC601 POWER AMP +B3 D601 -B1 D602 -B2 Q601,602 9 +B7 13 98 E DET HP SW 26 SASYNC AC IN 88 POWER POWER 11 +B8 1 CHECK 28 RDS DATA RDS CLK 27 14 N Q503,D558 51 -VP -VP 86 MUTE D906 PRO- TECTOR D974 SWITCH- ING D907 REGIN1 22 8 11 (12) 1617 X901 (6MHz) XC IN X
6、C OUT 1314 X902 (32.7kHz) X IN X OUT 80 MUTING Q606 AC IN POWER CONTROL CIRCUIT POWER CONTROL/ PROTECTION CIRCUIT C1BB00000527 IC151 RDS SIGNAL DEMODULATOR CLOCK RECOVERY (1187.5kHz) RDDA RDCL IDR RDS-ID DETECT/ RAM 57kHz BPF (SCF) PLL (57kHz) VREF CINFLOUTVREFVDDA/D VssA/D MPXIN TEST XOUTXIN OSC/DI
7、VIDER CLK(4.332MHz) 89 7 2 4,10 3,11 +B2 156 14 15 16 X151 (4.332MHz) REFERENCE VOLTAGE TEST ANTIALIASING FILTER SMOOTHING FILTER DATA DECODER MODE 1213 RST 91 MUTE2 MUTING CONT. +B5 Q612 MUTING Q609 (Q610) SURROUND (8) CENTER (8) HF (6) LF (8) Q551,554, 555 SIGNAL LEVEL DET. -B3+B4 M FAN MOTOR MOTO
8、R DRIVE Q553,556, 557 15 Vss 89 Vss2 SA-EH790(E,EB,EG,EP) BLOCK DIAGRAM FL1,2 POWER TRANSFORMER F1 AC IN L701 T701 D702,704, 752,754,755 Q707 +B4 -B3 Q702,705 Z701 RL702 Q791 POWER TRANSFORMER T702 D741744 -B1 -B2 Q703,704 +B7 D701,703, 751,753,761 Q701 +B1 Q723 +B2 Q711,725 D717720 +B5 D705 -VP FL1
9、 FL2 FL DISPLAY (FL901) Q708,709 +B3 AC IN SHSYNC POWER Q726 +B6 +B8 +B9 D902 D901 SASYNC D746 REGULATOR /STABILIZER REGULATOR REGULATOR REGULATOR SWITCH- ING REGULATOR REGULATOR RELAY DRIVE +B6 D740 REGULATOR /STABILIZER SA-EH790(E,EB,EG,EP) BLOCK DIAGRAM FP791 FP792 D711 NOTES :SIGNAL LINE :AUDIO
10、SIGNAL : TUNER SIGNAL () indicates pin No. Right channel. 12345678910111213 A B C D E F G H SA-EH790(E,EB,EG,EP) OPERATION, MAIN P.C.B. Note: This printed circuit board diagram may be modified at any time with the development of new technology. OPERATION P.C.B. A VR901 (VOLUME) C902 C928 C922 C920 R
11、929 R988 R991 R975 R974 R934 R937 R930 R931 R918 R957 R919 R932 R956 R987 C915 D906 J J J J J J J J J J J J J J J J J J J J J R995 R942 R941 R912 W902B 15 13 11 9 7 5 3 1 14 12 10 8 6 4 2 S913 D951 W901B 15 13 11 9 7 5 3 1 14 12 10 8 6 4 2 D902 D901 J R926 R993 R958 R969 R959 R997 R996 R990 R936 R93
12、5 R999 R954 C921 C903 D973 R939 R960 R986 J J J J J J C926 C905 D933 D934 D905 J L901 L902 J J C901 FL901 1 2 5 6 7 8 9 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 53 54 L153 J J J R155 1 5 10 15 20 25 30 35 40 45 50 55 6
13、0 31 51 65 75 70 80 81 85 90 95 100 IC901 R953 R951 R943 R961 R924 R925 R922 R921 J J J R952 R976 R928 R950 R945 R962 R949 C912 C908 C907 C925 C909 C904 C911 C910 D907 J J J J J 3 2 1 X901 J J X902 C914 C916 C918 B C E Q901 R151 R152 R153 R154 L152 R158 C152 C153 C154 L151 J C919 C151 C927 Z901 (SEN
14、SOR) D151 C160 C155 C156 X151 IC151 158 9101615 C157 C159R944 R946 C924 C917 D974 C158 S901 ( / ) D306 ( ) R901 J S904 ( PLAY/ REC) R904 R157 R903 R902 S902 (CLOCK/ TIMER) C923 JK903 (PHONES) 2 1 4 3 5 6 7 W905 C395 C396 J R906 R905 S907 (SET) S909 (6CH DISCRETE INPUT) S906 (TUNING MODE) S905 (FM AU
15、TO/ MONO) S903 (DEMO) J J J J J R910 R909 R908 S908 (INPUT SELECTOR) S910 (TUNING ) D904 R911 R994 R940 R907 S912 (TUNER/ BAND) J S911 (TUNING ) R914 R915 R916 R913 J S915 (RDS DISP MODE PTY) S914 (RDS DISP MODE PS) J DIGITAL S.WOOFER D954 ( PLAY/ REC) 3 2 1 1 2 3 E C B Q902 D961 R966 R965 (REP3337H
16、-M) N C931 MAIN P.C.B. B 10 9 8 7 6 5 4 3 2 1 D607 R635 R719 J J W902A J J J J J J J 15 13 11 9 7 5 3 1 14 12 10 8 6 4 2 C664 C725 J J J J J J J J J J J J J J J J J R230 C740 C733 C735 R764 R763 D737 B C E Q723 W901A W501 20 18 16 14 12 10 8 6 4 2 19 17 15 13 11 9 7 5 3 1 15 13 11 9 7 5 3 1 14 12 10
17、 8 6 4 2 R694 R696 R695 J J J J J J D657 D659 C705 D611 B C E Q612 J J J J J J J J J J J J C737 C706 J R776 R738 R739 R708 E C B Q708 E C B Q709 E C B Q707 D721 C707 C708 C509 C510 C714 C731 C741 D720 D719 D718 D705 D717 C715 C602 C656 C655 C554 C601 C555 C622 C660 C659 C371 C551 E C B Q609 E C B Q6
18、10 E C B Q554 E C B Q607 E C B Q608 E C B Q606 E C B Q605 E C B Q555 B C E Q602 B C E Q551 B C EQ503 B C E Q601 J J J 1234567891011 CP101 E602 R605 R606 R617 R618 R684 R683 R604R603 R686 R685 R601 R614 R602 J J J J J J J J J J J J J J J J R693 R692 R564 R229 R628 R688 R687 R512 R511 R509 R204 R203 R
19、727 R211 R510 R563 R558 R607 R608 R560 R569 R598 R597 R570 R561 R591 R559 R557 D555 D552 D757 D658 D551 D756 C550 C647 C605 C606 C610 J J J J J J E C B Q704 E C B Q703 C721 R572 R544 R610 R619 R612R691 R624 R620 R546 R547 R638 J J C604 C608 C603 C607 C649 C609 C650 C612 R627 C613 R555 C614 C723 C552
20、 C648 C619 C611 C724 R621 R615 R631 R632 R552 R551 R609 R611 R637 R769 R721 R722 R648 R647 R767 R622 R556 R623 R797 R796 R729 R202 R205 J J C616 C617 C618 J D558 J J D725 IC601 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 J J J J J J J J J J J J J J J J J J J J J J J J J J J
21、J J J W721A W722A 10 9 8 7 6 5 4 3 2 1 4 3 2 1 J J J C709 C761 D755 D754 D761 D753 D702 D704 D752 D701 D751 D703 D601 D602 C704 C701 C703 C702 J J J J J J J J J J J J J J J J E601 L602 L601 L605 L606 C639 C637 C635C636C632 JK601 JK602 1 2 3 4 CP602 5 6 7 8 J J J C626 C620 C630 C621 C631 C642 R651 R6
22、42 R652 R650 R649 R639 R641 R640 C627 C629 C628 C732 C641 C640 To SOUND PROCESSOR LF (8 ) HF (6 ) LF (8 ) HF (6 ) CN781 N Rch Lch SPEAKERS D582 D581 D583 D553 D554 E C B Q553 E C B Q557 C559 C556 R568 R566 R567 1 2 JK551 E C B Q556 C201 C202 158 9101516 IC201 D201 1 2 3 4 5 68 910 1112 CP601 7 (REP3
23、337H-M) N N 12345678910111213 A B C D E F G H SA-EH790(E,EB,EG,EP) AC IN, POWER TRANSFORMER(A)&(B), POWER SUPPLY P.C.B. POWER SUPPLY P.C.B. C B C E Q701 B C E Q702 B C E Q711 B C E Q725 E C B Q705 R725 R723 C719 C717 C710 C720 W701B D723 C718 C722 C734 R720 R724 R768 R749 R765 D758 D739 D738 J D730
24、J 10 9 8 7 6 5 4 3 2 1 (REP3337H-M) JK701 L701 FC1FC2 F1 T2A Z701 C791 RL702 1 2 43 1 2 3 4 CN601 5 6 7 8 9 10 11 12 1 2 3 4 CN602 5 6 7 8 T702(Power transformer) R794 R773 R774 R795 R771 R772 R712 E C B Q791 E C B Q726 D500 D711 D746 D740 J J C754 C758 D745 C759 R777 D742 D743 D741 D744 J J J J J J
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