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SERVICE MANUAL

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2. SERVICE MANUAL 4 CHANNEL RECEIVER SANSUI 08 6500 SANSUI ELECTRIC LTD CONTENTS GENERAL TROUBLESHOOTING CHART 3 4 DISASSEMBLY PROCEDURE 2 5 6 TEST POINTS 7 SCHEMATIC 8 9 10 11 ALIGNMENT RD 12 13 14 PRINTED CIRCUIT BOARDS AND PARTS LIST pana 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 OTHER PARTS AND THEIR POSITION ON CHASSIS 30 31 32 2 CN US d GENERAL TROUBLESHOOTING CHART If the receiver is otherwise operating satisfactory the more common causes of trouble may generally be at tributed to the following 1 Incorrect connections or loose terminal contacts Check the speakers turntable tape deck antenna and power cord 2 Improper operation Before operating any audio com ponent be sure to read its manufacture s instructions 3 Improper location of audio components The proper positioning of components such as speakers and turntable is essential to the maximum stereo enjoyments 4 Defective audio components The following are some other common causes of mal function and what to do about them I I ma PROGRAM SYMPTOM PROBABLE CAUSE WHAT TO DO _ _
3. 2 050 0152058 Ross 27k 0101273 64 za 0101273 Ro s 47 0101473 Ros 47kQ 410 CR 0101473 R067 8 2k0 0101822 Ross 8 2kO 0101822 Roes 220 0101222 70 22060 10 CR 0101224 470 10 HW SR 0111479 Ro72 1000 10 MW CR 0101101 Ro73 100 o 1 0111100 R074 eal 10 HW SR VRoo1 002 VR009 012 250k B X2 Main Volume 1090020 VRoo3 004 Front Balance 1040090 V Roos 006 25060 MN Rear Balance 1040090 VR007 008 2500 MN X2 Main Balance 1040110 i 1000 B 4 Front Tone Control 1060040 i 100k B X4 Rear Tone Control 1060040 2200 pF 0559820 BOVEC 0559820 1000 uF 50 V 0559302 Co12 0 01 uF 0590107 doli 400 OC 0590107 0 033 uF 600v OC 0591337 C023 2200 0559820 Co24 220006 SDN ES 0559820 Parts Stock 2 Position of Parts x Y Co25 2200 uF 80 V EC 0559820 C026 2200 uF 0559820 C027 0 0047 uF 600V OC 0591476 C028 0 01 uF 500V CC 0659011 bo 80 0 0656223 V 0 022 20 25 Y CC 0656223 C036 100 25 V EC 0503101 100 uF 6 3 V EC 0510101 Coss 1000 uF 0513102 5 Ba EC 0513339 3 3 uF 16 V BpEC 0532339 Con 33 uF 16 V EC 0512330 42 47 6 3 V 0510470 VCo01 0031 3 Gang Variable Capacitor 1200050 005 012 25 793 BL 0305451 2 002 582 0310660 Si a m Sele
4. CR 0101563 1C 830 1 8 0101182 1B R831 3 9k 0 0101392 2B Ra32 390 0101390 2B R833 3 3kO 0101332 1B R834 kO 0101102 2C Re35 2200 0101221 2C R836 1000 0101101 1 2B 837 470 0101479 2C Ra38 1000 0101101 2C R839 680 10 SR 0111689 2C R840 12kQ 10 CR 0101123 1C 0 22uF 10 50 V 0601228 C802 100 25 EC 0513101 1A C803 220 uF 10 V EC 0511221 1A C804 0515109 C805 24 90 VES 0515330 1B C806 100 10 V EC 0511101 2A C807 10 uF 50 V 0515100 1B C808 0 047F 10 50 V 0601477 2A C809 47pF 10 50 V CC 0660470 1A Can 0 22uF 10 50 V MC 0601228 1C C812 100 25 V EC 0513101 1C C813 220 uF 10 V 0511221 1C 14 0515109 Cais 2 0515330 1B C816 1004F 10 V EC 0511101 2C 27 TAg XN paure etat EEE 25420 ER io j uc 295 nd 2 S dE 28 PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Parts Name Y Stock No Z Position of Parts POWER BLOCK F 13735 w x Y 2 Y 7 Root 100 10 MW CR 0101101 2A Coo 100 uF 35 V EC 0514101 2A Roo2 220 0111220 18 Coos 47 16 0512470 2 10 AW SR 0111470 Coos Sone 0659011 2B Roos 18 0 10 MW CR 0101183 28 Coto 0 01u
5. O 6 3 0216 317 98 SE zov 9 m ES gt ES 1 48 R 515 Si 1 e 7 4 b 2SC458LG B uc 0047 8 Rasp 560K TRoo2 2sc458LG C Zen 2SC458LG C 25 984 lt 80 3 3K 220 IOV ANN RC mas 256485 256793 8 GO Vy S 1 9S iS TR ae Joor TRys 25 485 Caw x s OD TRoog 7256485 25C793 Y BL za2SC488LG C 7 25 984 4 F is72 _ I 3 AUK Tear 78645 J 9 4 2SC87 R F 25 8718 TE 9 6 8 REC 3 na i 2 5 N 24 Fi s O GQ ve J n 022 a CO 6 E MON FR 6 n is 5 Anas A MONITOR 8 2SC87IRF 2SC87IRF EE 22 gt Ri ess 700 6 3 VRon 100K ad u 703 7K 8 70 256870 Ween 250 1370 2SC87I D eSC87IRE
6. Excess heat Circulation of room air is important to receiver Be sure that receiver is well ventilated Stereo indicator blinks on and off Interference Indicator is not faulty adjust VRaos Record playing or tape playback Hum or howling Turntable placed directly on speaker Wire other than shielded cable used Loose terminal contact Shielded cable too close to power cord fluorescent lamp or other appliances Nearby amateur radio sta tion or TV transmission an tenna Place cusion between turntable and Speaker cabinet or place them away from each other Connecting shielded cables should be as short as possible Turn on Low Filter and turn Bass contro counterclockwise Consult nearest Radio Regulatory Bureau Surface noise Worn or old record Worn phono stylus Phono stylus is dusty Imploper stylus pressure Recondition playback head of tape deck or the stylus of turntable Turn Treble control counterclockwise Turn High Filter on 4 channel stereo playback Position of musical in struments and voice not clear Incorrect phasing of speak ers or input connections Check phasing of speakers and input connections Change rear speaker position and or direction DISASSEMBLY PROCEDURE REMOVING THE WOOD CASE FRONT PANEL AND BOTTOM BOARD COVER WOOD CASE PuUASSIS i 3 gi A KO BOTTOM BOARD SCREW rr r ETA kan Ree NA
7. 3C TRaot 25C871 P 0305472 1 R449 3 9kO 0100392 3C TR402 25A562 Y 0300221 2B R450 2200 0100224 3 403 0305472 2A R451 100kQ 0100104 3C TR404 0305472 1A R452 47kQ 0100473 3C TR405 0305472 1A R453 470 0100470 3C TR406 0305472 R454 47k 0100473 3B TR407 0305370 1 R455 8200 0100821 TR408 25 733 0305370 1 R456 0100103 2B TR409 256711 0305731 2 2C R457 ka 0100102 3B TR410 0305370 1 458 3 9k 0100392 TR411 25 733 Y 0305370 1 3B C W TR412 TR413 TR414 TR415 TR4ie TR417 0401 0402 0403 0404 0405 2SC711 G 2SC711 E F 2SC735 O Y 2SA678 5 2SC711 E F 2SC711 D E IN34A IN34A Y x Y 0305733 0305731 2 0305640 1 0300290 1 0305731 2 0305730 1 0310400 0310400 0310401 0310401 0310401 z 3B 3B 3B 3B 3B 2C 2 1 2B 1 2B 1B w Y Z D406 IN34A 0310401 1B D407 0310400 3C D491 10 1 0310340 401 4240510 1 1402 2 2mH Micro Inductor 4900090 2C L403 1mH 4900120 2C L 404 4240400 1405 4240400 LC401 4240490 1 28 C LC402 4240500 1B PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts N
8. CURRENT ADJUSTMENT STEP 10 il SETTING OF AMMETER TESTER 100mA range 100mA range Remove Fooz and Foos Set V Rao left and right channel to minimum Set Volume Control to minimum Turn on the receiver Connect ammeter to Foos as illustrated in Fig 1 Turn VR left chan nel clockwise and ad just current to 30 to 25 mA Turn off the receiver and replace Foos Turn on the receiver and connect ammeter to Foos as illustrated in Fig 1 Turn right chan el clockwise and adjust current to 30 to 25mA Replace Foos Adjust the rear channels as above TO AMMETER AMMETER more than 100mA range BACK PANEL WHAT TO DO NOTE Use an am meter with 100mA range Be sure to switch on ist and then connect the ammeter 1 QUICK ACTING FUSE HOLDER OUTPUT ADJUSTMENT STEP WHAT TO DO NOTE 1 2 Adjust volume control to mimimum Set oscillator to 1 000Hz and connect it to 4CH AUX LEFT FRONT input Set Selector switch to AUX 4CH Connect 8 or 16 ohm load resistor with pacity of more than 40 watts to LEFT SPEA KER output Connect oscilloscope to SPEAKER terminal Turn on the receiver and slowly raise vol ume Check output at terminal by means of oscilloscope Adjust VRao left chan nel so that peak of sine wave is clipped simul taneously Adjust right channel
9. 1B R709 8 2kQ 0101822 2C R733 18080 0101184 2 R710 820 0101822 1C R734 180 0 0101184 1A R711 560 0101564 2 R735 10 0101103 2A R712 56000 0101564 1C R736 V 104 WW CR 0101103 R713 60 0101682 2 R737 220 0101222 2B R714 6 8kQ 510 AW CR 0101682 1C R738 2 200 0101222 18 R715 1 500 0101152 2B R739 3 3k O 0101332 2 R716 1 5kQ 0101152 1B R740 3 3kQ 0101332 R717 10kQ 0101103 2B R741 1 5kO 0101152 2A R718 10kQ 0101103 1B R742 1 5kO 0101152 R719 2 7kO 0101272 2B R743 100kQ 0101104 2A R720 2JkQ 0101272 R744 100k 0101104 1 R721 2 2k0 0101222 2B R745 1000 0101101 1 2A R722 2250 0101222 R723 22kQ 0101223 2B C701 0 002 0601206 2C R724 22k 0101223 1B C702 10 50 0601206 1C SWITCH BLOCK lt 1375 w x Y 2 x NE 2 C703 254 0601228 2C Ro27 27k 0101273 C704 0 22 uF 0601228 1C Ro28 27kQ 0101273 1A 10 YW CR C705 pel Janae ag ee 0660470 2C Ro29 ed 0101273 1A C706 47pF 0660470 1C Roso 27kQ 0101273 1 C707 0 012 uF 0601127 2C C708 22 8510 25 90 MC 0601127 1C 180pF 0641181 1A 47 pF 0510470 2C Core 180pF 0641181 10 50 V C710 63V EC 0510470 1C 180pF i le 0641181 TA C711 4 7 uF 0513479 2C Co18 180pF 0641181 1A C712 4 7 uF EEE 0513479 1C 19 0 01 0601107 C
10. 28 C224 22pF 10 50 V CC 0660220 1B R221 2700 0101271 2A C225 0 022 809 25 v CC 0656223 1B RES TRIER 25 cc 18 R224 ita 61606574 TC C228 el 48a 0656223 R225 1000 10 CR 0101101 L 2C 622 0 02246 R226 1 500 0101152 1C C230 47 uF 16 V EC 0512470 1A R277 3300 0100331 1C C231 220pF 10 50 V 0660221 2A R228 10kO 0101103 1C C232 0 33ZF 10 50 V MC 0601338 2A R229 0100152 1 C233 10gF 25 V 0513100 R230 6800 0101681 1 2C C234 0 0222 2206 25 V CC 0656223 1A R231 6802 0101681 1 28 C235 0 022uF 180 25 v 0656223 R232 22kQ 0100223 TR 0305791 2C i Sad esed Tan 0305791 2 R235 22 0100122 2SC930 D TR204 0305791 1C R236 5600 0100561 1B TR205 0305791 18 R237 1000 0101101 1 28 TR206 0305791 1B 1 50 2Sk24 E F FET O 4 R240 1000 0101101 2A D201 0310331 1 R241 1136 0101102 1 2A D202 NN 0310331 1C R242 IMO 0101105 D203 0310331 1B R243 IMO 0101105 TA 024 0310331 1 R244 47 0 0101472 1A IC2m A7 SAJE R245 15kO 0101153 2A R246 12k 0101123 2A T201 Discriminating Transformer 4235650 2A R247 6800 0101684 T202 Meter Coil 4235660 1B R256 470 0100470 1C R257 820 0101820 CF201 0910100 1 2C CF202 0910100 1 2C VR201 22k B 1035150 CF203 kadi 0910100 1 2C VR202 47kO t 1035170 1A CF204 Ceramic Filter S
11. M M 23 C647 C648 C649 C650 Ces C652 C653 C654 C655 C656 C657 C658 659 C650 C933 C934 C935 TR641 TRe42 TR643 TRe44 TRe45 TR646 TR647 TRe48 100F 100 4F 10gF 10gF 10gF 10AF 47 47 PF 100 100 pF 100 pF 100 pF 100 pF 6 3 V EC 1004F 25 V EC 10 50 V CC TOO 100 6 3 V 100F 2SC871R Y 0510101 0510101 0510101 0510101 0510101 0510101 0513100 0513100 0513100 0513100 0660470 0660470 0660101 0660101 0510101 0510101 0510101 0305475 0305475 0305475 0305475 0305475 0305475 0305475 0305475 2 2 1A 1B 2A 2B 1A 1B 2A 1B 1B 2A 1 1 1 1 1B 1 2A 1 2B 1A 2 2B w x Y 2 ICo4t 0820040 1C 1 942 0800220 2C 1C943 Hybrid IC 0800210 2 1 944 0800210 2 PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Parts Name Yi Stock No Z Position of Parts TONE CONTROL BLOCK lt 1370 Y z w x Y 2 R703 2 200 0101222 2 R725 6 80 0101682 2B R704 2 2k0 0101222 1C R726 6 8k 2 0101682 1B R705 56 0101563 2 R727 0101103 2B R706 56KO 0101563 1C R728 0101103 1B R707 3 3kQ 0101332 2C R731 1 500 0101152 2B R708 3 3k Q 0101332 1C R732 1 5kQ 0101152
12. reception A Constant or intermit tent noise heard at times in certain areas Discharge or oscillation caused by electrical appli ances such as fluorescent lamp TV set D C motor rectifier or oscillator Natural phenomena such as atomospheric static or thun derbolts Insufficient antenna input due to ferroconcrete wall or long distance from station Attach noise limiter to electrical ap pliance producing noise or attach it to the receiver s power source Install outdoor antenna and ground receiver to raise SN ratio Reverse power cord plug receptacle connections If noise occurs at certain frequency attach wave trap to input Keep receiver at proper distance from other electrical appliances AM reception A Noise heard at a par ticular time of a day in a certain area or over part of dial Peculiar to AM broadcasts Install antenna for maximum anten na efficiency See RADIO RECEP TION in operating instructions booklet In some cases noise can be elimi nated by grounding receiver or re versing power cord plug receptacle connections B High frequency noise FM reception A Noisy Adjacent channel interfer ence or beat interference TV set too close to audio system Such noise cannot be completely eliminated by the receiver but it is advisable to turn Treble control counterclockwise turn on High Filter Keep set at proper distance fr
13. similarly and then rear channels Oscillator used should have oscillation frequen cy of 20 to 20 000Hz and output voltage of more than 200mV Set other controls and switches as follows Balance to CENTER Tape Monitor to OFF Mode to NORMAL Tone to CENTER Other to OFF 14 PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Paets Name Y Stock No Z Position of Parts FM IF BLOCK lt F 1243B gt x 2 x Y z R201 2200 0100221 2C C205 0 022 0656223 2 R202 15 0 0100153 2C C206 0 022 0656223 2B R203 0100472 2 C207 0 0224F 806 26 v 0656223 28 R204 0100102 2C C209 0 0226 7207 0656223 2B R205 3900 0101391 2C C210 0 022 uF 0656223 2B R206 6800 0101681 2C C211 0 022 uF 0656223 2B R207 3 30 0100332 2C C212 0 039 180 25 v CC 0656393 2A R208 1 5kO 0100152 2C R209 2200 0100221 2C 2 SO V CC dioi za R210 kO 0100102 2C C215 10 uF 25 V EC 0513100 i nde Pc C216 0 022 590 25 v 0656223 1C R213 3 3k O 0100332 2B C217 47pF 10 50 V 0660470 1C R214 1 5kQ 0100152 2B C218 0 0220 t3 25 0656223 1 R215 2200 0100221 2B C219 47pF 0660470 1C R216 kO 0100102 28 C220 22pF 10 50 V 0660220 2C R217 3900 0100391 2B C221 22 0660220118 R218 6800 0101681 2B C222 0 0224 800 0656223 1B R219 2700 0101271 2B C223 20 25 V CC 0656223 1B R220 560 0100560
14. 0601477 18 Ra18 82kQ 0101823 2A 0 047 pF 0601477 1A R619 270kO 0101274 1B R620 270kO 0101274 1A R621 1 5kQ 0101152 1B TReo1 0305474 2B 25C871R E Re22 1 5kQ 0101152 602 BER 0305474 2B R623 22kQ 0101223 1B TR603 0305475 2B Re24 2200 0101223 604 seno 0305475 2B SYNTHESIZER BLOCK lt F 1371 w x Y z w x Y 2 R901 IkO 0101102 2C R931 1 5 0101152 R902 0101102 R932 1 5k O 0101152 2B C R903 150kQ 0101154 2C R933 4700 0101471 1B R904 150kQ 0101154 R934 4700 0101471 2B R905 1000 0101104 2C R935 2250 0101223 R906 10050 0101104 R936 2250 0101223 2 R907 0101682 2 7 100kQ 0101104 1B R908 6 8k O 0101682 1C R938 100kO 0101104 2B R909 5 6k 0101562 1B R939 68kQ 0101683 1B R910 5 6k Q 0101562 2B R940 68k 0101683 28 R913 56 0101563 2C R941 10050 0101104 R914 56k 0101563 1C R942 100kQ 0101104 2B R915 18kQ 0101183 2C R943 479 10 YW CR 0101479 1B R916 18kQ 10 CR 0101183 R944 470 0101479 2B R917 10k0 0101103 2C R945 15kQ 0101153 1B R918 0101103 R946 15 0101153 2 R919 8 260 0101822 2C R947 9 0101393 1A R920 8 2kQ 0101822 948 39 0 0101393 2 R921 1000 0101104 2 R949 560kQ 0101564 1A R922 10050 0101104 R950 560kX 0101564 2A R923 4 7 0101472 2C R951 4700 010
15. 50 0515100 1B R802 150 0 0101154 1A Cais 0 047uF 10 50 V MC 0601477 2C 5600 0101564 19 47 0660470 R804 6800 0101681 Ca23 gt 0660220 2A R805 3 3k Q 0101332 C834 22pF 10 50 V 0660220 2C R806 3 3k Q 0101332 IA C825 sov 0660331 2B R807 0101103 C826 330pF 0660331 2B 47kO 0101473 1A Rao 56kO 10 KW 0101563 TA no 200kQ B Balance Adjustor 1030790 TA B Raio L8kQ 0101182 1B 802 1k Q B DC Bias Adjustor 1030690 2A B Rai 3 9k O 0101392 2B VR803 200k Q B AC Balance Adjustor 1030790 1B R812 390 0101390 28 804 1kQ B DC Bias Adjustor 1030690 2B C Ru ko EIER c ososaio i 14 Baie 2200 0101221 2 TR8o2 2SC1124 2 3 0305901 2 2A Ris 1000 0101101 28 TRaos 2SC984 B C 0305871 2 2 Ra17 470 0101479 2A TR804 2SC485 Y m 0305261 2 2B Rate 1000 0101101 2A TRaos 2SA485 Y BL 0300071 2 2A Reis 680 10 KW SR 0111489 2A TReog 2SC458LG B C 0305310 1 1C R820 0101123 7 2SC1124 2 3 0305901 2 2C 2 2kO 6101252 1C 2SC984 C 0305871 2 2B C Rg22 150kQ 0101154 1C TR809 2SC485 Y d 0305261 2 2B R823 560kQ 0101564 1C TRa10 25 485 Y BL 0300071 2 2C R824 6800 0101681 i 825 0101332 1C R826 3 3kO 0101332 1C 827 10 0 0101103 1C R828 47kQ 0101473 1C Re29 56kQ 10
16. AT E 4 SURROUND DECODER Sig a b FM ANTENNA 7 1 DISTANT 2 LOCAL MONO sw SIGNAL METER murine SW FM STEREO METER AM METER C496 168 05V 4 F3 et N Do IN34A gt ez Raagh 9K 25 UE PAE 25 711 6 3 100K gt Ce q ol Co lt gt Sr lt x 85 gt 20 STEREO LAMP Qun m FM Com PHONO 2 LAMP Cio mm L PHONO 1 LAMP Ca x amp V E TUNE METER LAMP AM LAMP 20H AUX LAMP AUX LAMP C 26H IND LAMP Cj 40H IND LAMP GROUND ALIGNMENT FM ALIGNMENT PROCEDURE Any internal parts replacement or changes you make in the QR 6500 requiries proper alignment again Test points alignment procedures and schematic diagrams are given on pages 7 14 Equipment required 1 Sweep Generator 2 Oscilloscope 3 FM Signal Generatar 4 Multiplex Stereo Generator 5 AC V T V M STEP ALIGN 1 Discrimi nator 2 O S C 3 O S C 4 Repeat 2 and 3 5 Circuit 6 RF Amp Circuit 7 Repeat 5 6 GENERATOR 10 7MHz 200kHz Sweep generator FM signal generator 88MHz 400Hz 100 Modulation FM signal generator 108MHz 400Hz 100 Modulation FM signal generator 90MHz 400Hz 100 Modulation FM signal generator 106MHz 400H
17. O sg 0 022 gt 1 1 OFF 2 Ss MUTING LOW 2 OFF Sg a b LOUDNESS FRONT TR407 408 1 OFF Ls 2SC733 0 Y 1 2 ON 77550 S a b LOUDNESS CREAR CONNECTION F 12678 P I OFF 2 ON 8 a b HIGH FILTER CFRONT OFF 22K pe d 20022 PO Caos 00022 2 ON Sa a b HIGH FILTER REAR 1 OFF RIGHT OUTPUT ff RI 1180 ABCDEFHJKLMNPRSTUV 123456 78 910Il I2 3H I5 6 IT 1 2 ON 1 Sy a b LOW FILTER FRONT OFF 41 1 lt 20022 Rasa 22K TRaos 406 2SC87I F 2 ON Sn a b LOW FILTER REAR OFF 2 ON Sig CA b SPEAKER SELECTOR FRONT LOFF 2 A 4C 5 Sgla d SPEAKER SELECTOR REAR LOFF 2 4 3 B 4 A B Sa MODE SELECTOR 1 REAR ONLY 2 FRONT ONLY 3 FRONT amp REAR 4 NORMAL 1 5 gt TRga FHIKLM NPR 2SC7II E F f 28C733 0 2SC733 OY 680P zih gt jo Ojo amp da aR FM RIGHT SIGNAL CJ AM SIGNAL FMLEFT SIGNAL S 8 14 8 24V S 8 Ca v 5 RIGHT QUARTER TURN 6 HALF TURN 7 LEFT QUARTER TURN 5 SYNTHESIZER SELECTOR 1 OFF 28 S NER
18. yw fee va C920 a poy E 0515109 2B Resi 0100102 C921 Jed add 0601108 UDI IE C922 0 047 uF 0601477 2B i n C923 ag VES 0515109 1B in dud 924 1 uF i 0515109 2B S 2 Cs2s 0 00338 0601336 m C926 1 10 50 V MC 0601336 2A R667 68kQ 0100683 C927 1 uF 0515109 18 R668 68kO 0100683 2B C928 50 MIEG 0515109 2B Ra 8200 0100821 C929 0 047 0601477 670 8200 0100821 12 10 50 V 0601477 2A 8200 0100821 12pF 0660120 1A Re72 8200 0100821 28 1090 N EE 0660120 2 so ja 674 100gF 25 V EC 0513101 1 2C dd in TR901 0305313 4 2C mne ne 677 10k Bag 25645810 R678 0100103 18 904 0305313 4 2B R679 0100103 2 0100103 28 ao ee R952 18kQ 0101183 hes R953 39kQ 0101393 1C SM qucd R954 330 0101333 IC906 0820070 1A Ross 10 MW 0101333 1C x AA R956 15050 0101154 0920030 31 40 TA R957 120kQ 0101124 1C CL902 0920030 31 40 2 1035170 1 VR942 47kQ 1035170 V R943 1035170 Cen 1 5gF 0579003 C642 1 5 pF 0579003 1B C643 1 5AF ig ve 0579003 Ce44 1 5gF 0579003 18 Ce45 33 uF 0510330 1A C646 d 0510330 1B O
19. 1471 1 2 R924 4 7 0101472 R953 5600 0101220 1A 925 15kQ 0101153 1 2 R954 5600 0101220 2 R926 15kQ 0101153 1 2C R961 47050 0101474 R927 IMO 0101105 1B R962 470k4 0101474 R928 IMO 0101105 2B R963 8200 0101824 R929 56kQ 0101563 1B R964 820kQ 0101824 R930 56 0101563 2B VReol 2kO B 1032070 1B PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts X Parts Name Y Stock No Z Position of Parts SYNTHESIZER BLOCK lt F 1371 cont d PHASE MODULATOR BLOCK lt F 1372 w x Y z W x Y 2 VR902 2k Q B 1032070 28 R641 0100102 C901 0 47 uF 0563478 2C za a C902 0 47 UF 0563478 1C ENE 0563688 2C Re44 0100102 1 28 C904 0 68 0563688 1C R 45 1200 0100124 1A C905 0 047 F 0601477 2C Re46 12050 0100124 1B C906 0 047 uF 10 50 V MC 0601477 1 12000 0100124 RK Coo O 047uF 0601477 2 648 120kQ 0100124 2 C908 0 047 uF 0601477 1C R649 0100393 C909 0515109 2C R650 39k O 0100393 1B C910 1 uF 0515109 Res 39k 0100393 2A C911 0515109 2 R652 39kQ 0100393 2B C912 1gF 0515109 1C R653 2 20 0100222 1A C913 1F 50 V EC 0515109 1C R654 22K0 0100222 C914 0515109 1C R 55 22kQ 0100222 2A C915 1 uF 0515109 1C 2 200 0100222 C916 0515109 2B C ae C917 id T 0510101 1B us 9 12 ue seno e s mi ro
20. 28 220 0101220 1A B D305 IN60 0310330 1A R329 4JkQ 0101472 B D306 0310330 R330 22k0 0101223 1A T301 AM RET 4210100 R331 4700 0101471 1A fto 0101472 2A T302 AM OSC Coil 4220300 2C T303 Ceramic Filter 4230440 1B R333 4700 0101471 Tiu 4230480 1B R334 4700 0101471 TA Tsos AM IFT 455KHz 4030470 NA R335 0101102 2A R336 1000 0101101 2 R337 4 7kO 0101472 2A VR301 10k 3 AM Meter Adj 1035130 1 2A C301 0 022uF 80 0656223 1C C302 1 xp 25 0656393 2 IF 50 V EC 0515109 2C C304 0 022 uF 0656223 2C C305 0 039 uF 0656393 1C 0 039 8096 25 V CC 0656393 2C C307 0 039 uF 0656393 C308 0 022 uF 0656223 1B C309 0 01 uF 0601107 2B C310 ved 10 50 V 0601107 2B Can 22pF 10 50 V CC 0660220 2C C312 430pF 5 50 V MIC 0640431 2C C313 0 022uF 8094 25 V 0656223 1C C314 4 7 uF 16 V EC 0512479 2B 15 0 022 uF 0656223 2B C316 0 022 uF 0656223 1B C3i7 0 039 uF 0656393 2B C318 0 022 uF 0656223 1B 19 LAMP HOLDER BLOCK F 13745 W x Y Ro41 180 1096 Ww CR 0101180 PLoos 0420020 PLooe 0420020 PLoo7 6 3V 0 25A Pilot Lamp 0420020 3 0420020 009 0420020 cs SWITCH BLOCK lt F 1376 gt w x Y S amp a b Front or Rear High Filter Switch 1130380 or S a b S10 a Front Rear Low Fil
21. 3100 1B R420 10kQ 0100103 C408 560 5 50 V SC 0620561 R421 2200 0100224 1A C409 560 5 50 SC 0620561 1A R422 560 0100563 2A C410 O Bow WE 0601158 R423 560 0100563 0 15 uF 0601158 R426 10kQ 0100103 2A C412 hop 5 50 V SC 0620152 2A R427 0100103 1500pF 0620152 1A R428 1000 0100104 2 C416 EE 0513100 2A R429 100kQ 0100104 1A C417 10gF 2 C418 560pF 5 50 V SC VE 3O CR 2 C419 1AF 0515109 2 Rasi 33kQ 0100333 2A 80 V EC 68kQ 0100683 2A Ca20 1AF 0515109 2A R433 68kO 0100683 1 2A C421 0 0022 uF 0600226 2A R434 4 7k OQ 0100472 2A C422 0 0022 uF 0600226 2A R435 4 7kO 0100472 1A C423 0 0022HF 5 50 V MC 0600226 R436 1000 0101101 2A C424 0 0022 uF 0600226 3A R437 100 2 0100104 2 C425 0 00224F 0600226 R438 100kQ 0100104 2A C426 0 0022 uF 0600226 3A R439 3 30 0100332 2A 427 0 0222 183 50 V CC 0656223 3C R440 3 3kO 0100332 2A C428 0 68 25 V 0563688 3C R441 4700 0101472 2 C429 pn e 0513100 28 R442 47kQ 0100472 2A C433 47 uF 0513470 2B R443 220 0100223 C434 50 V 0515109 28 R444 22 0100223 C493 100 pF 25 V EC 0513101 R445 IMO 0100105 3C C494 0 022uF t30 50 v 0657222 R446 3 3K0 0100332 2C C495 0 1 AS 0563108 R447 330 0100330 2C C496 0 68 uF 0563688 R448 3 3kO 0100332
22. 510420 30 OTHER PARTS AND THEIR POSITION ON CHASSIS n Foo1 F005 Foo4 F003 Foo2 PUoo1 Ro39 042 DINoo2 1 002 1003 Ro53 S16 051 052 001 TRo05 Ro55 R056 TR007 57 58 R050 070 C033 034 C036 PLoo4 PLO19 PLo11PLo20 PLoo2 PLoo1 PLo18 001 003 Design and specifications subject to change without notice for improvements Pea er Ro35 038 DINoo1 DINoo3 Ro43 046 Co23 0002 Doo1 Co26 R018 R017 TRo10 TROO6 Ro16 C024 RO15 C012 TRo12 2 1 S1 a m J003 J004 VR003 004 Ro63 I I z ZEE KEME VR013 014 R049 P 2 ee 017 018 x bese S12 a b 001 J001 4002 19 022 S15 a f 514 5 Roe7 068 nji mus VR005 006 VR015 016 019 020 VR001 002 009 0012 Ro65 066 VR007 008 S 13 a b 32 SANSUI ELECTRIC CO LTD lt 14 1 2 chome Izumi Suginamiku Tokyo 168 Japan TELEPHONE 03 323 1111 TELEX 232 2076 Stock No 9216080 Printed in Japan 72030M8
23. 713 4 7 uF 0513479 2B Co20 0 01 10 50 V MC 0601107 C714 4 7 uF 0513479 1B Co21 2 I AUN 0601107 C715 0 033 0601337 2B Co22 0 01 pF 0601107 C716 0 033 giF 0601337 1B C717 0 033 uF 0601337 2B b 2CH 1 Tape Monitor Switch 1B C718 0 033 uF 210 50 V MC 0601337 1B 5 2CH 2 Tape Monitor Switch C719 0 0012 pF 0601126 2B 4 4CH Tape Monitor Switch 1130390 18 C720 0 00124F 0601126 1B 55 Release Switch C721 0515109 2B Se a b Front Loudness Switch 1A 50 V EC 5 Rear Loudness Switch 1A C722 0515109 7 ear Loudness Switc 47pF C725 10 50 V CC 0660470 2A C726 47 pF 0660470 1A C727 0513479 2A 25 V EC C728 4 7 uF 0513479 C72 cl 0510101 2A C730 100 PEE 0510101 1A C731 A 0510470 2A HE C732 47 0510470 1A NA nt C733 1004F 25 V EC 0513101 1 2A A lt CON IE 3 REESE BE TR701 25C871R F 0305475 2C TR702 0305475 1C 1 TR703 0305470 2C 8 3 25C871 D 1 TR704 SC871 p 0305470 1C M TR705 0305475 2A 2SC871R F TR706 871R F 0305475 1A TR707 0305470 2A D TR708 0305470 1A PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Parts Name Y Stock Z Position of Parts DRIVER BLOCK lt F 1180C gt W Y 7 W x Y z Raol 2 2k0 0101222 TA 817 10gF
24. F 50 500V 0659011 1B Rooe 2750 10 MW CR 0101272 18 0 01 uF 0659011 1B Roo7 1000 10 KW SR 0111101 Coss 1000 uF 10 V EC 0511102 28 Roos 5 640 10 MW CR 0101562 2A Roos 220 10 WW SR 0111220 1A Roo 25 959 3057412 28 2 25 1061 0305771 2 ROO ul 10 MW CR 0101125 2 TRoos 250223 0308232 401 1A Ren axo 77 0101392 25 TRoo4 27 o 0305771 2 TA Ro12 2 510 Se 0111221 28 Rots 1000 A 0111101 28 Doo3 10DC 1 0310680 18 Doo 10D 1 0310340 2B 100pF 75 V EC 0519301 2A Coos 100 pF 35 V EC 0514101 28 ZDooi 67 0310710 1 2B Coo6 100AF 25 0513101 2A ZDoo2 0310710 1 2A OTHER PARTS AND THEIR POSITION ON CHASSIS w X Y Rois 3300 0111331 Rois 3300 0111331 17 3300 0111331 3300 o 0111331 Rois 3300 519 Jw SR 011331 Ro20 3300 0111331 Roz 3300 0111331 Ro22 3300 0111331 Ro3s 390k 0 0101394 3900 0101394 100k0 0101104 1000 0101104 390kO 0101394 100k 0101104 390 0 0101394 2 100kQ 0101104 Ro43 39060 V 1026 MW CR 0101394 Rosa 10080 0101104 Ro4s 390 0101394 R046 100kQ 0101104 Roa 18kO 0101183 Roso 470 0101470 Ros 6800 0101681 Ros2 680 0101680 Rosa 1200 0101121 Ross 0 50 0152058 Rose 0 50 0152058 d 0 50 0152058 058 0 50 0152058 Roso 0 50 510 2W Ceh 152 0 50 0152058 Rosi 0 50 0152058
25. FA 10 7 MC 0910100 1 2B CF205 0910100 1 2B C201 0 022 uF 0656223 2C CF206 0910100 1 2B C202 0 022 uF 4 80 0656223 2C C203 edd 22076 28 V CC 0656223 1C L202 E Sa 4900100 2C C204 0 022 0656223 2C L203 4900100 2C 15 PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Parts Name Y Stock No Z Position of Parts FM MPX BLOCK lt F 1322C gt w x 2 w x Y z R401 0100102 R461 47 0 0100473 R402 0100102 1C R462 47 0 0100473 2B R403 100kQ 0100104 1C R463 10kQ 0100103 2 3B R404 22kO 0100223 1C R464 4JkQ 0100472 3A R405 10080 0101104 2 465 470 10 W CR 0100470 R406 82kQ 0100823 1C R466 220k O 0100224 28 R407 60 0100482 2 R469 15050 0100154 1C R408 0100122 1C R470 1000 0101104 R409 47k 0101473 2C R410 22k O 0100223 2 VR401 47 Stereo Separation Adj 1035170 2A VR4o2 100kQ B Muting Adi 1035190 3C ii n STANS 2 i VR403 220kQ B FM Stereo Indicator Adi 1035210 R413 33k 2 0100333 2B C401 68pF 10 50 V CC 0660680 1 2C R414 220kQ 0100224 1A C402 10 uF 25 V EC 0513100 1C R415 10kQ 0100103 C403 100pF 0620101 2 R416 10kQ 0100103 1A C404 ew 5 50 V SC 0620472 2C R417 22050 0100224 2A C405 6800pF 0620682 1C R418 220kQ 0100224 1A C406 1 pF 50 V EC 0515109 2 3B R419 0100103 C407 10gF 25 V EC 051
26. KSTEM B SYSTEM FRONT SPEAKERS C SYSTEM REAR SPEAKERS SYSTEM DIAGRAM OF TUNER SECTION 7510420 2SC93OD 2569300 0022 22 Gos 70002 Rui OOK BP 1000P 0022 7Ry 2SC380 0 posse bu TRsos amp D ING b 5 40 Ode IN60 b i EE NOTES 150 N SWITCHES 1 ALL RESISTORS UNLESS OTHERWISE NOTED 5 SELECTOR 2 FOR ALL VOLTAGE AND CURRENT MEASURMENTS PHONO 2 LINE VOLTAGE 77V AC PHONO 3 DC VOLTAGE MEASURED WITH DC TO CHASSIS FM AUTO WITH NO SIGNAL INPUT FM MONO AM AUX 2A CAPACITOR AUX 464 O rp S a b TAPE MONITOR 1 MYLAR 202 1 OFF 2 0N CERAMIC 53 a b TAPE MONITOR 2 MICA 1 OFF STYROL i 2 ON ALUM ELECTROLYTIC 7 4 a d TAPE MONITOR BP BI POLAR ELECTROLYTIC C306 2039 9 JIK C323 0038 Roz 470 No ay N a 3 Cus 00 gil C33 0022 gt 0035 Daas 2 05 410 470 a r I I I 2 1 1 1 1 1 1 1 E gt ij 0 E Ras JA we C329 0072 3 32 76 C107 Rou 3 9K 22K Ins o A a o 2 47K 100 So
27. ME The Tuner Block if necessary be independent ly separated from the rest of the receiver for ex amination and servicing purposes do so follow these simple steps 1 Remove the seven screws fastening the Tuner Block to the receiver proper 2 Pull off the two grounding mesh wires marked in the photograph below 3 Remove the shielding cover of the multi con nector see photo below then unplug the multi connctor very carefully 4 Free the Tuning Control and pull it out The Tuner Block now floats freely off the receiver pro per but if you need disconnect it completely move on to steps 5 and 6 5 Pull off the lead wires of the AM ferrite bar antenna When you re assemble connect the red wire to F 1085 5 3A the grey and black ones to 1085 5 3B and the yellow one to VC 6 Disconnect in the middle the coaxial cable con necting the FM DIST LOC Switch to the FM Frontend Ate NARA novanje ke ani To bar antenna To DIST LOC Switch Grounding wire Shielding cover of multi connector Screw securing Screw securin tuner block 9 tuner block TEST POINTS VR804 TC101 TC102 VR803 VR801 VR802 L102 L101 1105 1 TCoo2 TCoo3 DIAGRAM OF AUDIO SECTION F 12678 FAIT 7 PHONO 2 9 PHONO 1 o O sg 2SC458LG C 2SC458LG B FJ
28. ctor Switch 1105100 S12 a b Front Speakers Switch 1102280 Si3 a d Rear Speakers Switch 1101310 14 a e Mode Switch 1103390 S15 a 1 Function Switch 1102320 516 FM Antenna Switch 1110040 001 Power Switch 1130350 Looi 750 3000 FM balloon 4290021 1002 150 Ferri Inductor 4900080 1003 4200460 1 Power Transformer 4000960 200LA Signal Meter 4300470 Moo2 1004A Tuning Meter 4300460 Joo1 Front Headphones Jack 2430060 Joo2 Rear Headphones Jack 2430060 Jo03 Tape Rec 2 Jack 2430070 004 Tape Mon 2 Jack 2430070 DINoo DIN Connector 2CH 2430040 DINoo2 DIN Connector 4CH Front 2430040 DINoo3 DIN Connector 4CH 2430040 2410170 Voltage Selector 2410180 2410190 001 003 AC Outlet 2450040 Foo 5 100 127 Power Fuse 0431280 3A 220 250V Power Fuse 0431260 02 005 Quick Acting Fuse 0433250 PLoo 7V 0 2A AUX 4CH Indicator 0400141 PLoo2 7V 0 2A AUX 2CH Indicator 0400141 PLoo3 7V 0 2A PHONO 1 Indicator 040014 PLoo4 7V 0 2A PHONO 2 Indicator 0400153 1 6 3V 0 25 Signal Meter Lamp 0420020 PLo11 6 3V 0 075A Dial Pointer Lamp 0400200 PLo12 7V 0 2 4Channel Indicator 0400153 PLo13 6 3V 0 25A Tune Meter Lamp 0420020 PLoi4 6 3V 0 075A 2 4 Digital Indicat Plos 63V 0 075 p ej 0400200 PLoz 7V 0 2A PE 0400154 PLois 6V 0 1A FM Stereo Indicator 0400161 PLo19 7V 0 2A FM Indicator 0400154 PLozo 7V 0 2A AM Indicator 0400154 FM Front End 7
29. o X Parts Name Y Stock No Z Position of Parts AM BLOCK lt F 1038 4B gt w x Y z w Y 2 10kQ 0101103 1 2 C319 33 uF 16 V EC 0512330 2B R302 390 0101390 1C Ca20 0 02uF 10 50 V 0601207 2A R303 0101102 2C C321 50 V EC 0515109 2B R304 1000 0101101 C322 0 02uF 10 50 V MC 0601207 2A R305 3 9kO 0101392 2C C323 0 039 uF 0656393 2B R306 33kQ 0101333 1C C324 0 039 uF 0656393 2A R307 222 0101220 1 28 C325 0 022uF 8096 25 v 0656223 1A R308 0101102 28 C326 0 022 uF 0656223 R309 1000 0101101 1C C327 0 022 uF 0656223 1A R310 22K0 0101223 2B C C329 0 012 uF 0601127 2A Raii 3 9kO 0101392 1B C330 MG 0601157 2 12 0101102 2B C332 0 022 uF 800 0656223 R313 100 0101100 2B C333 00952 da WE 0656393 2A R314 220 0101220 1B C334 33 uF 16 V EC 0512330 R315 47k O 0101473 1A R316 0101103 2B TR301 0305331 1C R317 47kQ 0101473 1B TR302 25 380 0305331 1C R318 100 2 0101101 1B TR303 0305331 2B R319 220 10 Ww CR 0101220 2B TR304 0305330 1 2 2SC380 20 0101102 2B TR305 0305330 1A R322 1000 0101101 TR306 2SC458LG C 0305320 2A R323 6 80 0101682 2B Bibi 100kQ 0101104 2A B D301 IN60 0310330 1 2C 25 100kQ 0101104 2A B 0302 DS 410 0340030 1C R326 220 0101223 2 D303 0340030 2B R307 2 2kO 0101222 2B D304 0310330 1 2 R3
30. om stereo system Poor noise limiter effect or too low SN ratio due to in sufficient antenna input Note FM reception is affected considerably by transmission conditions of station such as power and antenna efficiency a result vou may receive one station quite well while receiving another station poorly Install antenna supplied for maxi mum signal strength If this does not prove effective use exclusive FM outdoor antenna using TV antenna for both TV and FM with a divider make sure TV reception is not affected Excessively long lead in wire of an tenna may cause noise B A series of pops Ignition noise caused by starting of nearby auto mobile engine Install antenna and its lead in wire at proper distance from street or in crease antenna input as described before C Tuning noise between stations Results from nature of FM reception FM Muting Release switch depressed Release FM Muting Release switch Ditto T 3 PROGRAM FM MPX reception SYMPTOM Noise heard during FM MPX reception but inaudible during FM mono reception PROBABLE CAUSE Weaker signal because service area of FM MPX broadcast is only half that of FM mono broadcast WHAT TO DO Orient antenna for maximum an tenna input Switch on High Filter and on turn Treble control counterclockwise Channel separation deteriorates during re ception
31. ter Switch 1130380 or S11 a b Abbreviations CR Carbon Resistor SR Solid Resistor Cement Resistor MC Mylar Capacitor EC Electrolytic Capacitor AEC Aluminum Solid Electrolytic Capacitor CC Ceramic Capacitor MiC Mica Capacitor SC Styrol Capacitor Oil Capacitor 20 PRINTED CIRCUIT BOARDS AND PARTS LIST W Parts No X Parts Name Y Stock No Z Position of Parts EQUALIZER BLOCK lt F 1267B gt x Y z Y z R601 220 0101222 2B C601 0 47 uF 0601478 2B 109 Reo2 220 0101222 2A C602 MN SIV MC 0601478 2A 56k 0101563 2B 68pF 0660680 28 R604 56kQ 0101563 2A C604 68 0660680 2A 102 605 3900 0101394 2 C605 68 SOVE 0660680 1B 39050 0101394 2 C606 68pF 0660680 1A R607 3 9kQ 0101392 2B 7 0513339 2B Reos 0101392 2 C608 j 0513339 2A Roos 3900 0101391 1004F TE 0510101 28 R610 3900 0101391 Ceio 100 uF 0510101 2A Reli 180kQ 0101184 1B o Ee 0515109 18 12 180k 0101184 C612 7 0515109 10 MW CR Reis 8200 0101821 1B C613 0 012 0601127 18 R614 8200 0101821 C614 0 012 uF 0601127 1A Reis 6 8kO 0101682 1B 15 0 003 uF 0601306 1B 6 8kQ 0101682 C616 0 003 uF 0601306 Rei7 820 0101823 2B C617 0 047 uF
32. terminal AM ALIGNMENT PROCEDURE NOTE To align set the AM signal generator level to minimum FEE OUTPUT STEP ALIGN GENERATOR SERRI INDICATOR SANG ADJUST ADJUST FOR 1 IF 455kHz 30kHz Antenna Oscilloscope LF T T s Best IF Transfor Sweep generator terminals and V T V M wave form mer at TP 2 O S C AM generator Antenna Oscilloscope 535kHz O S C Coil Maximum 535kHz 400Hz 30 26 terminals and V T V M Modulation at output load 3 O S C AM generator Antenna Oscilloscope 1600kHz O S C Trimmer Maximum 1600kHz 400Hz 30 terminals and V T V M cap TC Modulation at output load 4 Repeat 2 and 3 5 RF amp AM generator Antenna Oscilloscope 600kHz RF transformer Maximum 600kHz 400Hz 30 terminals and V T V M Tso Modulation at output load 6 Antenna AM generator Antenna Oscilloscope 600kHz Ferrite bar Maximum circuit 600kHz 400Hz 30 terminals and V T V M Antenna coil Modulation at output load Loos 7 RF amp AM generator Antenna Oscilloscope 1400kHz RF Trimmer Maximum 1400kHz 400Hz 30 terminals and V T V M 008 Modulation at output load 8 Antenna AM generator Antenna Oscilloscope 1400kHz Antenna Maximum circuit 1400kHz 400Hz 30 terminals and V T V M circuit Modulation at output load Trimmer TCo91 9 Repeat 5 6 7 8 AM IF WAVE FORM 10KHz 455 10KHz z
33. z 100 Modulation FEED SIGNAL To TP via the 10 ceramic capacitor To antenna terminals To antenna terminals To antenna terminals To antenna terminals NOTE Set the FM signal generator level to minimum first OUTPUT INDICATOR Oscilloscope is connected to 2H Oscilloscope and V T V M at output load oscilloscope and V T V M at output load Oscilloscope and V T V M at output load Oscilloscope and V T V M at output load DIAL SETTING 88MHz 108MHz 90MHz 106MHz ADJUST FM Discriminator transformer Tao primary and secondary O S C coil Lios O S C trimmer Antenna coil and 108 Trimmer and T Cios ADJUST FOR S curve Maximum Maximum Maximum Maximum FM DISCRIMINATOR WAVE FORM 200 100 KHz KHz 107 100 200 KHz ALIGNMENT FM MULTIPLEX CIRCUIT STEP ALIGN GENERATOR OUTPUT INDICATOR ADJUST ADJUST FOR 1 19kHz phase FM signal generator To Connect distortion 98MHz Lao Minimum 98MHz antenna meter to right channel distortion in Stereo signal generetor terminal load terminal right chan composite signal with pilot signal left chan 30 modulation 2 Stereo Same as above Same as Connect oscilloscope Same VR Maximum separation above and V T V M to load above separation

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