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1. 022 6600 6395 12 0120 pt i 2 R307 3 3K RNG 9201 R303 mm 2x 88 2K S BS 25 ov ov z 4 43 2 0 Gu qe 180 ael 16301 219 4 s Jest 1 82 503 3 5 gt 12101 SST 8 4558 Sex 29 8324 raze E 55 38K 33K 5 PHASE SHIFT 2528 58 9 x 8 5 ov ov 0302 ov ov 145 Sis 382 2 10 02 gt 6554 5 2 85 2 MIXING x SURROUND 1 4 5 C396 12 amp 4 re a vee 4 o Phose differe cus 1C303 422 2 6 022 K6800P 82 BA4558FDXTI EM o Tov Tov Tov amp BUFFER ms xv 2 ey Nd 2304 8316 C305 0303 4 3 2 6 082 62K 5 1 DTALI4ESTP Vee 1 dh 2 548 z SWITCHING CONT 15 2 790 2k gt 255 8309 8 E 18 es E R329 3 3K A331 1 vet 459 ON 37v 4 3 537 03 03 48 i ss 5558SFE2 LE 6 NO EQ 9503 OK SURROUND ov 4 ACEI 4 00 07 E 56V Q403 85 2 14 5 21448 RT 0301 SWITCHING CONT SWITCHING 83 2 35 SURROUND 4 2 DN 8455 Ko 047 b d
2. 13 2 r E 59 e 2 0 23 X oa 26 1144 1980 0 96 gt 2 55 5 EE 2 Ou Su 05 22 55 3avi 0990 4 6990 oN 8 be 3 M 258 25 8 S 5 824 6680 5 annos 23 CS 0 S 9 suor 33431 598 834051 2990 599 5 E 5 HS 3 n s z 2 20 2 4 8 m 5 i amp zu 381 it zd itl s 55 2 55 1 E Be 3E 8 st E 5 1 5 2 T 51 1590002 5 299 5 oo 8 28 T 40816680 2 gt og o Z 8 4 33 T 2599 5 FIOR 554 ge 2 5 5 35 e 8 5 217 5 1 gt su 4410101 2 gt ET 2 2 o 5 5 rt ao I zd z 209 5 1 81 1 324 i 5 1 2 2 1 1 a 2x 2 4 8 55 1881 5 219 4 4 5 9 2 8 8 5 5 E 33 3 384 5 8816 851 82 8 2 lt 21135 gt o ae sea El lo lt 5 2 g 53
3. 5 f 1 f 1 P7 g g 9 8 7 6 dB PIN CONNECTION Notes Filament catia 1 4 Grid Power Source Circuit For GNJarea 486 area Bellen Mac AC OUTLET CIRCUIT yu E 21 41 noian 82072409 1 46902 00 1 lt 436 24494 0 60Hz 21 To Power Switch aN E AC IN AC OUTLET CIRCUIT SU X502 CIRCUIT BOARD DIAGRAM BALANCE B OPERATION SWITCH SELECTOR CER pe NES 60 65 5 z SM ae 622 VO a nasa SUPER BASS 1423 ORT xm VEI 0004 22 SU X502 POWER SWITCH HEADPHONES G MAIN 7 5501 2 10 2 E fX ab Ab T ye eos L1 LJ LJ PLAYBACK REC OUT OUT Iver DAT
4. 9510 2SAS92EFPTA RELAY ORIVE 16504 01551 1562 2803312 5 CURRENT STABILIZER SU X502 26 27 0507 4120 815611 apo 35 R533 85 sos a 38 5 6K m L50t 8155 01551 29 4 66 3 8 6525 6507 8525 eal Y 3 5 C524 8838 2111 85 85 5 22K x 581 a ov 163 5 2 5 4 07 09 M Bw 585 5 g on 2526 13 ES gt 53 01501 1503 56K 1862 5 25 13094 05 8534 lt 508 3 BIAS CONTROL 35 io 5 5 8 Risse 1552 0 0 8 aa 18 54 33 M ov jov ov 5 Sed Las 525 6554 58 185 150 81558 4 81938 01501 5 10K 214 81531 81517 18725 22K 47K 819550 1434 81568 56 0 D gx En 4 IE NV 8210 91503 1555 91560 o 502 2 27K 7 556 81564 gt 81565126 30922 1 28 1539 33K 5 9 10503 45 ao Rx ENF 01604 01862 0 147 5 81532 91518
5. 2 5v DTCII4ESTP RESET 0605 C606 509 0 0798 6 9 1 NP 1514 03 56 576 NP 401514 BA4556FDXTI BUFFER CONT 62 35 318381 40015 213001 028 2200 90812 0 2 206 21818 80812 05 ase 1 901 FL DISPLAY 530 540 5 58 59 8 5698 6 80218 14 ATIC DIAGRAM __ __ lt __ iL INPUT CIRCUIT 10811 456 BUFFER 2800 Q807 808 25021445 MUTING Q805 806 07000 25 31145 e SWITCHING 28 4825 1 DTAII4ESTP s expo jov jov EMPHASIS DRIVE 4 03 42 0 8 4 voo 0604 0810 14 2SC331 IAQSTA ov jov coe MUTING CONT STABILIZER b 2 291 844 i R849 25 88 88 58 1 0 0 0 6 at 8 esl 98 287 0810 88 58 1802 LPF 8 3 485 859 ge 1807 3 370 8 5 8 08
6. 2640 24 0 64 057 19 gt 5 5 ie 9 8 27 6 5 24 22 21 49 8 17 16 1 2 3 5 6 8 9 5 ox x x tf I LR 8 a 35 2 5v 26 24V 0 308 1 701 16801 8 3 B E amp amp 8 2 3 5 5 EU Y RBI 47K e 5 8 8 88 2 c 83124 D 2 G 5 3 0 S 9 10 12 9 19 9 2 25 2 06 06 5 Pw sv Tov sv sv 2 59 sv 818 Litera 8813 0 60 Raio 5 1 1008 aT g 25135 1 2 8 PHY EST 1 0801 CD signal NAA 8 8 55 884 zB 1 801 802 1 803 ed 8x S i p p 82383 200052 Sas 85 3Y 83 GPIF32R DIGITAL 2 O ys 2V DIV 47K OPTICAL RECEIVER DIGITIS RECEIVER ov EM adit Q8 2 mi mn 8 DTCII4ESTP 85 SWITCHING E 1802 TOOUH 15 50 502 805502 B vipeo TERMINAL CIRCUIT 4690 MONITOR 919 47 0 R918 JK301 2 P On 1 901 MCI4052BCP VIDEO SELECTOR REC OUT VCR 10 4K901 3 5 2 R902 PLAYBACK JK901 4 VOP 2 1 25 MS283P ATTENUATOR ELECTRIC VOLUME 9902 9 3 25033 IAQSTA 11 INPUT OU
7. 10103855 ECBT1H561KB5 50V 560 ECBT1H102KB5 ECBT1E2232F 25V 0 022U 17710311 ECBT1H102KB5 50V 1000P 1 1047 5 597 598 0601 ECBTIE2232F ECBT1H102KB5 ECBT1H102KB5 ECBT1E1037F 25V 0 0220 50V 1000 50 1000 25V 0 01U 636 10000 0004 ECEALVKALOOB 35V 100 008110101006 50 100 02 5 1 1032 25V ECBT1H331K85 omms av 1 100 1 ECFRIEI23KR ECEA1HKAD10B 1047 5 ECFRLE683KR ECFRIE472KR 25V 4700P ECBT1H470J5 50V 47 ECFR1E223KR 25V 0 022 ECKWNS1032V 500V 0 010 A ECALHAPO10B 50 1 102 5 50V 1000P ECEALHKA2R2B 50V 2 20 SOV 0 010 ECFRIE223KR 25V 0 0220 25V 100 ECBT1H820KBS 50V 82P 1 10U ECFRIE104KR 25 0 10 ECBT1E1032F 25V 0 010 ECBTIH331KBS 50V 330P ECEA1AU221 10V 2200 103055 16V 0 010 00100208 ECBT1E1032F 28V 0 010 ECBT1E2232F 25V 0 0220 ECA1HAP2R2B 900 2 20 ECESS6V472NX ECQE2104KF3 56V 47000 ECBT1H102KB5 1000P 10 0 10 2 2 1008 102 85 35V 100 10007 50V 1000P 3 30 10 50V 1 150 ECFRIE1042FS 25V 0 10 2 20 EC
8. 02011202 721 Muting control PLAYBACK VER MCIA052BCP 4 VIDEO SIGNAL REC OUT VIDEO SELECTOR gt 9901 903 5 8455 MC74HCUO4FEL INVERTER o DIGITAL 7 AUX COAXIAL GPIF 528 16 veo 6 69 OPTICAL RECEIVER DAT OPTICAL Serial GPIF32R OPTICAL RECEIVER Parallel Poratie 4 Serial Demodutator generator Timing generator a05 ee 07 000601 DIGITAL INTERFACE RECEIVER DIGITAL FILTER 31 50 502 ANGSS4NSFE2 MIXING PHASE DIFFERENCE AE T FDXTI 3 Sicut BUFFER AMP 9501 PHASE DIFFERENCE SIGNAL M5218AP 21 161 BA 4358FDXTI BUFFER q SUPER BASS SIGNAL 01501 1503 TC4066B 2 6554 2 01502 1504 16103 68 IET C503 ELECTRIC VOLUME 1 L RF PRE 14 6554 1 1 1 19 15 4 12502 1 2 aissi 1 4 4 lt 0 l SIGNAL LEVEL DET 01552 522 101506 55010 on 0 off ana CURRENT SENSOR 50754 1805 MICRO COMPUTER 0809 Emphasis control 065 P
9. 5 ram T Sx El 1 9 S thes 9 Super boss 2 xt D 2 EL 1 10 comme 1 18 p Bui 3 4 alt 5 2 15 2 E 1 551 22 EN 8 53 Rais xm 25 2 2K 1 js 1 PSS RAO R408 5 33K 39K 25 E s Jes 2 0 2 IK D 3 0 3 5 OT SYSTEM MI fe CONTROL VCA CONTROL SUPER 10403 ON 36V IN Sw 15402 GNO 4 gt D 3 9 10 39 0 3 9402 9 6 E CONTROL a ev fizy AN n 2 To TURNTABLE 8486 oo 4 28 8 2 96658 59 1 85 32 E 2 Rare 8408 6 58588 28 8 t 2 2K 33K 39K 1 0 6 25 8 3 0401 402 gx orive gs 38 5 511310 702 25021445 7 5 13 wh ELECTRIC SWITCHING 99 8820 volume SUPER BASS 0 x NnS ga s 8 5 55958 2 19955 5 Next TX ia i 8 96018 16408 Tli Sg 0 gx AN6554NSFE2 58 1 3 5 PRE 8 4 3 5 di orive CIRCUIT 46018 R551 00 46034 Yo orive CIRCUIT 146058 Page 13 J602A ORIVE CIRCUIT 460281 Pago 13 18 24 25 16501 5 3204
10. OUTLET EG 54892338 AC OUTLET 8 4 57893328 OUTLET 5159231 18 AC INLET E EG GC 53532348 INLET GN FUSE HOLDER FUSE HOLDER Notes Capacity valuse are in microfarads uF unless specified otherwise P Pico farads pF F Resistance values are in ohms unless specified otherwise 1 1 000 1M 1 000k OHM Values amp Remarks ERDS2TJ683 ERDSIFVJ100T Values amp Remarks 1 29 10 RESISTORS ERDS2TJ393 ERG1SJ271E 20 T ERDS21J333 ERDS2TJ223 1 48 2 ERDS2TJ471 14 470 ERDS2TJ103 ERG2SJ331P 39 ERDS2TJ473 1 48 47 527332 ERDS2TJ562 1 0 5 6K ERDS2TJ331 i4w 330 ERDS2TJ153 ERDS2TJ472 4 7K ERDS2TJ560T 0 56 ERDS2TJ222 ERDS2TJ102 1 48 1K ERDS2TJ184T l AW 180K ERDS2TJ221 ERDS2TJ334 1 8 330 ERDS2TJ123 10 12K ERDS2TJ273 ERDS2TJ473 ERDS2TJ224T 1 AW 220 ERDS2TJ470 ERDS2TJ103 1 44 10 ERDS2TJ102 1 48 ERDS2TJ153 ERDSLFVJS60T 1 28 56 ERDS2TJ471 l W 470 ERDS2TJ152 ERDS2TJ223 lw 2 ERDS2TJ472 1 AW 47K ERDS2TJ333 ERDS2TJ 102 1 48 1K ERDS2TJ102 1 48 1K ERDS2TJ102 ERDS2TJ104 1 4 100 ERDS2TJ822 AW 8 2K TERDS2TJ105T ERG
11. AN6554NSFE2 4 7 TC4066B BA4558FDXT1 BA4560FT1 AN6558SFE2 8 M50754 180SP 2SA1309AQSTA 28021448 28C3311AQSTA DTA114ESTP 2SC3312RASTA DTC114ESTP 25014505 DTC144ESTP UN4215TA 25 992 25811870 165 P300DLF 2SB621AQRSTA 28D1761DEF Ca MA167TA 25 31145 700 155291 4 4 4120 LN473YP C MA4047MTA 4150 LN873RP C MA4051LTA 4051 K Cathode 2 _ Cathode A Angie LNO38568PH Anode Cathode 27 SU X502 WIRING CONNECTION DIAGRAM AC IN OUTLET UNSWITCHED 3 BRN GRY IN OUTLET P C B FAN MOTOR SOLOER SIOE VIDEO IN OUT TERMINAL P C B penc INPUT OUTPUT CONTROL TERMINAL TUNER CD TERMINAL tsuRROUNO TO TURNTABLE QUT LIN P C B BRN ea JK503 JKSO 502 JK603 96662 JKEO 2 J90lA 4551 CE MAIN FL DRIVE 06310 POWER SWITCH HEADPHONES P C B 501 5018 1502 5011 2 1 263
12. right 8 selector is used to enjoy powerful super bass sound ON Switch ON when connecting the Technics system speakers SU X902 SB CS90 SU X502 SB CS90 CS70 OFF Switch OFF when connecting speakers other than Technics system speakers Notes When connecting speakers other than system speakers sound from the speakers may not be heard if the selector is pressed ON because the protecting circuit on the amplifier becomes active active current sensor activates only for the speaker systems connected to the A terminals To connect cords to terminals Strip off the outer covering and twist the E c center conductor 15 mm Twist 2 Tilt the lever back and 19 32 insert the cord 9 3 Close the lever and pull NN the cord gently to be sure that it is secure Note Be sure to only connect positive cords to positive terminals and negative cords to negative terminals Note To prevent damage to circuitry never short circuit the plus and minus speaker wire 50 502 DIGITALIZATION OF AUDIO SIGNALS E Why digitize Audio signals are analog signals with a continuous form When these audio signals are subjected to repeated electronic processing recording playback etc they become noisy and distortion occurs thus resulting in deterioration of the sound quality When these signals are first digitized be
13. ERDS2TJ103 ERDS2TJ562 1 AW 5 6K ERDS2TJ182 ERDS2TJ822 N 100 1 W 82 ERDS21J123 1 AW 12 ERDS2TJ563 56K ERDS2TJ393 1 48 39K ERDS2TJ224T 14 220K ERDS2TJ223 22K ERDS2TJ332 1 W 33K ERDS2TJ332 1 48 3 3K 56K ERDS2TJ103 1 10K ERDS2TJ332 3 3K ries ERDS2TJ684 ERDS2TJ104 1 4W 100 ERDS2TJ392T 148 3 9K ERDS2TJ154 ERDS2TJ105T 1M ERDS2TJ104 100K ERDS2TJ153 ERDS2TJ102 1 48 1 58214332 106 3 3K ERDS2TJ103 ERDS2TJ223 1 4W 20 ERDS2TJ105T 1 48 ERDSIFVJ680T ERDSZTJ103 12 10K ERDS2TJ334 1 AW 330 ERDS2TJ105T ERDS2TJ105T 1 44 M ERDS2T4123 1 W 12 ERD2SFVJ100T 1 49 37 ERDS21J223 14 22 SU X502 Ref No Part Values amp Remarks Ref No Values amp Remarks No Values amp Remarks 10K 10K BRDS2TI103 627121 330 110185 100 ERD 180 02885 50V 1000 1 3 0 25V 330 1448 180 ECFRIEZ23KR 25 0 022 yw 38 ECFRIEBB2NR 257 6800P ERDS2TJ272T 1 8 2 1 ECAIHAPOLOB 10 ERDS2TJ331 1 4W 330 ECBTIELOSzF 25V 0 010 ERDS2TJ101 100 ECBTIE2232F 25 0 022 82731 1 40 330 70 5 SOV 47P 144 100 204 ECBT1E1037F 25V 0 00 ERDS1FVJ332T 1 09 3 3 905 80 18
14. SW ACTIVE CURRENT SENSOR EVQWQAF2524B V VOLUME SW SPEAKER ON OFF EWC2XAF20015 V R BASS SW PHONO V R TREBLE SH TUNER SW VDP POSISTOR S 54 TAPE SW VCR SRPBD47101 POSISTOR 58 DIGITAL AUX SW CD COMPONENT COMBINATION 5 H8DN2041B SH DAT SW S DYNAMIC SOUND COMPONENT COMBINATION COIL 5 VOLUME PRESET SH SUPER BASS SW SUPER BASS LEVEL UP SLQY07G 40 SW SUPER BASS LEVEL DOWN 221322 COIL ELEXTLOOKA9 001 SW SURROUND SW POWER COIL SW VOLTAGE SELECTOR RLQZP470KT Y RLQZP101KT Y COIL COIL JACK S RLQZPSRSKT Y COIL RLQZPIR2KT Y COIL CONNECTOR 3P RLQZPQROKT Y COIL CONNECTOR 3P RLQZPIR2KT Y 1 COIL CONNECTOR 5P JRLQZPJRGKT Y COIL SOCKET RLQZPIRZKT Y COIL SOCKET RLOZPORIKT Y COIL SOCKET SOCKET TRANSFORMER S SOCKET SOCKET RTPINSEO10 W POWER TRANSFORMER E EG SOCKET SLTSN483 W POWER TRANSFORMER GC SOCKET SLTSN481 POWER TRANSFORMER EB GN CONNECTOR 4P SOCKET 10 OSCILLATOR 5 SOCKET 10 SOCKET 8P EFOGC600474 CERAMIC FILTER SOCKET 8P CONNECTOR 85 CONNECTOR 51130549881 Part Name amp Description CONNECT
15. Amplitude voltage Digital signals Recorded to CD Ut lt gt Digital signals Speaker systems AF This method Sound deterioration may easily occur because analog signals are sent to the amplifier through stereo connection cables Speaker systems mpact disc player Digital analog conversion Amplifier 4 Sound deterioration does not easily occur because digital signals are sent to the amplifier through optical fiber cable C What the sampling frequency is E The sampling frequency expresses the degree of minuteness to which signals can be cut relative to a certain specified time interval during sampling For compact disc sound Analog signals are cut 44 100 times i e 44 1 kHz during one second This 44 1 kHz is therefore the sampling frequency for compact disc sound analog digital conversion is Audio signals analog signals are taken out sampled at certain fixed time intervals The points at which this sampling frequency occurs are digitally encoded and converted to digital signals 2 Each sampling frequency point is returned converted to voltage thus converting digital signals to the analog signals that we can hear What digital analog conversion is SU X502 DISASSEMBLY INSTRUCTIONS PE Removal of the Cabinet Removal of the Front Panel Unit Procedure Proced
16. When these terminals are not in use be sure to insert the shorting pins included OUTPUT INPUT 6 Shorting pins TUNER terminals Connect a tuner R 0 Tuner not EE m SYSTEM CONTROL IN terminal This terminal is used to connect a Technics tuner with the SYSTEM CONTROL OUT terminal SU X502 Make connections to each component by using stereo connection cables not included and video connection cables not included VCR VCR 6 Ww 10 TURNTABLE Connecting video equipment terminals Connect a VCR VCR not included AUDIO AUDIO QUT 6 output 6 00 9 L R L VIDEO VIDEO VIDEO VIDEO MONITOR terminal Connect a TV TV T included 6 terminals Connect a video disc player Video disc player not included AUDIO OUT VIDEO QUT R 0 8 VIDEO OUTLET AC outlet OUTLET Do not connect video equipment such as a TV etc to the AC outlet of this unit This outlet is intended for audio equipment Do not exceed the indicated power ratings when connecting to this outlet UNSWITCHED outlet Power is always available regardless of power switch Audio equipment rated up to 60 W can be connected here Note The
17. OPTICAL 000 cable not included terminals ANALOG Connect compact disc player O Compact disc player not included ee p ie DIGITAL INPUT DAT CD terminals of this unit These terminals are protected by dust protection caps to avoid damage by dust etc Remove the caps only when the DIGITAL INPUT terminals are 10 be used When these terminals are not being used attach the caps as shown in the illustration at right Dust protection fR cap 2 Sal SU X502 SPEAKERS ACTIVE CURRENT SENSOR Connection of speaker systems E 4000 SPEAKERS 8 16 2 Three pairs of speaker systems main second surround sound can be connected to this unit Speaker systems that can be connected to any of the speaker connection terminals of this unit are speaker systems with an impedance of 8 to 16 ohms Make connections to each speaker system by using speaker cords not included Main speaker systems not included Connect to the A terminals Second speaker systems not included Connect to the terminals left 00 Surround sound speaker systems not included Connect to the SURROUND terminals Be sure to connect both speaker systems If only one side is connected no sound will be heard
18. 000 0101 144 100 A 58 1502 ERDS219473 AN 15 100P 1 4W 10 ECBTIHISIKB5 50 150P BRDSIFW2R2T 174 2 2 A ECBTIHIOIKBS 50V 100P ERDSIFVIGRST 178933 A ERDS2TJ393 ECBT1E1032F 25 0 00 808210322 LAN 3 3K ERDS2TJ102 C250 ____ 880002208 16V 22 ERDSIFVJ931T 1 2 330 ERDS2TJ822 ECEALHKASRIB SOV 3 30 1A ECEALHKARA7B 509 0 47 EROSZIJRZT 144 2 2 80 5 50 18 yw 22 ECBTIE2232F 25V 0 022 ERDS2TILSOT LAN 15 820 0271 272 0 5 SOV 100P ERDS2TJ334 1 48 330 yw 3X 0273 274 22 10V 220 ERDS2TJ472 1 44 4 7K 0501 1502 ERDS2TJ123 1 4W 12K 0297 298 jECBTIHLS1KBS 50V 150P 1 48 10K ERDS2TJI04 1 48 10 11503 1504 ERDS2TJ103 6901 302 50V 33 ERDS2TJ104 1 4W 100 1 0304 ECQVIHB23J2 50V 0 082 ERDS2TJ182 1 8 1 8K V Lx 52 2 ERDS2TJ472 1 33 ERDS2TJ103 ERDS2TJ272T 310 ECBTIH820KBS SOV 8 ERDS2TJ102 ERDS2TI563 ECAIMAPORGB 50 3 3 ERDS2TJ102 ERDS275103 ECBTIELOIZF 25V 0 010 52 03 ERDS2TJ3927 3 05 50V 12 ERDS2TJ560T 1532 ERDS21223 ECBTIEI3F 257 0 010 BRDS2T472 1534 ERDS2TJ472 ECFRIEA7KR 259 0 047 ERDS27473 ERDS2TJ223 ECEAIHKAR22B 507 0 22 ERDS2TJ101 ERDS2TJ103 ECFRIEG82KR 25V 6800P ERDS
19. 52201 15 to the rear of the power IC or regulator transistor Ref No Removal of the Fan Motor 1 Remove the 1 flat cable J701 2 Remove the 4 screws Projection Fan motor 3 Insert a screwdriver at the root of the cooling fan Force it out of the motor shaft 4 Remove the motor cover by used screwdriver 5 Remove the motor from the fan casing 1 Remove the 1 connector J209 6 When mounting the motor fan align the fan casing s 2 Release the 3 claws projection with the hole of the fan motor ATTENTION SERVICER Some chassis components may have sharp edges Be careful when disassembling and servicing eReplacement of the Foot Heat Melted Posts 1 Remove the 4 heat melted posts on the chassis with a pair of nippers or similar tool 2 To replace the foot 0011 2 on the chassis melt the 4 posts 1 Foot with a soldering iron Chassis Soldering Iron 0011 2 12 MATIC DIAGRAM SU X502 SU X502 ove 3 a 9 5 e CIRCUIT CIRCUIT R605 20K 460141 Pago 18 o nin 0605 4047 A FLGOI 8810074 b Ms T 613 68 8e TA b 8 0601 6
20. 820 gt 88 ae 5 0501 5 amp by O 0502 nw 351 M IGTTA 3 2 5 0504 5 3 Power Source Circult For 28C33 IAQSTA MOTOR DRIVE 25 1309 05 MOTOR ORIVE 0704 0705 I 302 OUTLET pes UNSWITCHED 8 9 22 9 3 4701 JK903 0707 710 PROF 00 2 Fo 250 240 E 5 T LS 50 60Hz Bes 5 beT 9657 Esp 6022 5702 1 706 AC OUTLET 3017610 CIRCUIT IGULATOR 20 SU X502 DESCRIPTION OF FL PANEL Notes This schematic diagram may be modified at any time with the development of new technology 95501 Active current sensor switch in OFF position 95501 Speaker ON OFF switch SPEAKER A in position 5501 2 SPEAKER in OFF position 95601 Turntable input switch PHONO 5602 Tuner input switch TUNER 95603 Video disc player input switch VDP 95604 Tape deck input switch 95605 Video cassette recorder input switch VCR 95606 Digital AUX input switch DIGITAL AUX 95607 CD input switch CD 95608 Digital audio tape deck input switch DAT 95609 Super dynamic sound switch 5 DYNAMIC SOUND 95610 Volume preset switch VOLUME PRESET 95611 Super bass switch SUPER BASS 5612 Super bass level control swi
21. Refer to the cover page for area Parts without these indications can be used for all areas Ref No Part No Part Name amp Description Remarks 3 Part amp Description Remarks TRANSISTOR INTEGRATED CIRCUIT 3 TRANSISTOR TRANSISTOR 16101 65588 2 C PHONO EQ AMP TRANSISTOR 16201 7091648 C INPUT SELECTOR TRANSISTOR 10251 M5283P I C ATTENUATOR 2SD1761DEF TRANSISTOR 16252 4558 1 I C BUFFER 28811870 TRANSISTOR 10301 4558 0 1 C PHASE SHIFT 2501761266 TRANSISTOR 10302 ANGS54NSFE2 1 MIXING SURROUND AMP DTALI4ESTP TRANSISTOR 10303 1 I 0 BUFFER AMP DICLI4ESTP TRANSISTOR 16401 BA4558FDXT1 1 0 DTALL4ESTP TRANSISTOR 10402 ANGSSANSFE2 I C L P 8 2SC3L14STUTA TRANSISTOR 10403 611311 702 C ELECTRIC VOLUME 3 25021448 TRANSISTOR 16501 513204 1 C POWER AMP DTALL4ESTP TRANSISTOR 16502 6554 1 C SIGNAL LEVEL DET 2803311A Q TRANSISTOR 16503 1040668 T C SWITCHING DTCII4ESTP TRANSISTOR 10504 M5218AP C BUFFER 25 1303 TRANSISTOR 10601 M50754 180SP l C MICRO COMPUTER 2SC3311A Q TRANSISTOR 10002 BA4SSSFDATI 11 0 BUFFER AMP 2SA1309A R TRANSISTOR 10603 604 892040 12 1 C LED DRIVE DICII4ESTP TRANSISTOR 10801 802 GP1F32R 1 0 OPTICAL RECEIVER DTALMESTP TRANSISTOR 16803 00092 L C
22. configuration of the AC outlet differs according to area AC power supply cord Connect the AC power supply cord included after all other cables and cords are connected Notes Configuration of the AC outlet and AC power supply cord differs according to area e If this unit is not to be connected with the tuner the cord is to be connected to the household AC outlet Tuner not included AC OUTLET AC power supply cord included This unit 52 AC IN For United Kingdom Cut off and dispose of the plug and replace with a suitable plug Household AC outlet Fit a suitable plug to the AC power supply cord SU X502 2 0 0 WO QUO 0 wO wO 80010 E wo o p IN 00 TO TURNTAB Connecting audio components E DAT terminals ANALOG DIGITAL Connect a digital audio tape deck Recordings can be made to the digital audio tape deck Digital audio tape deck ANALOG not included DIGITAL INPUT OPTICAL DAT out OUT R Optical fiber cable not included Aux terminal DIGITAL Connect a second compact disc player etc Second compact disc player not included Coaxial cable not included 7 Connect compact disc player Compact disc player not included
23. gt 22 ATK 8 Y 1522 s Bx SES EI F1 01502 1504 1 502 25 1309 05 6554 Bav BIAS CONTROL SIGNAL LEVEL DET 2 5 8v 0705 Q701 d 2 017610 0 4215 REGULATOR STABILIZER 9 Er ek 1803 01505 01506 9705 ans 9708 ES TC4066B DTCII4ESTP DTAII4ESTP 22 SWITCHING A C S CONTROL A C S CONTROL 2 Tm 2 527 28 5 6 5 15 34 58 9 82 9 28 6 5 x sth 1 thes 247v 53 Cl 2067 5 58 lt 4 E RM HSS ao 9 070 88 527 15 9702 408v 3 0 4 258621 ES 89 REGULATOR i 5 e 58 ARTO 1 2330 arog 408V 0703 9704 250176 258 870 2 REGULATOR REGULATOR R 19 su x502 29 30 31 32 Power switcH HEADPHONES CIRCUIT 14 C588 1000P 59 0002 oH I 1 8534 28350 HEADPHONES j 4454 t foe oes ste 8 8 1 8 5 SPEAKERS 8 Eor 1 5501 2 1 gt x e csl i RLS0I EL 4 7 9 H 29 ciso 2 9 TH o 09 i I 6259 0022 537 1000 6538 1000P 0509
24. parts list 40 41 Packaging 42 BEFORE REPAIR 1 Turn off the power supply Using a 100 5 W resistor connect both ends of power supply capacitors C711 C712 3300 in order to discharge the voltage 2 Before turning the power supply on after completion of repair slowly apply the primary voltage by using a power supply voltage controller to make sure that the consumed current at 50 2 60 Hz in NO SIGNAL mode should be shown below with respect to supply voltage 110 V 127 220 240 V Power supply voltage 110 120 220 V AC 230 V AC 240 V Consumed current 50 Hz 323 754 mA 297 694 mA 160 373 mA 154 360 mA 146 341 mA Consumed current 60 Hz 316 737 mA 291 679 mA 156 365 mA 150 351 mA 144 336 mA PROTECTION CIRCUITRY The protection circuitry may have operated if either of the following conditions is noticed sound is heard when the power is switched ON Sound stops during a performance The function of this circuitry is to prevent circuitry damage if for example the postive and negative speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of this unit are used If this occurs follow the procedure outlined below 1 Switch OFF the power 2 Determine the cause of the problem and correct it 3 Switch ON the power once again Note When the
25. 03 0602 604 8662 100 4 4 25033 lAQSTA 4 DTCI44ESTP SYSTEM CONTROL DRIVE SYSTEM CONTROL DRIVE hS 384 16601 ov M50754 I80SP ov MICRO COMPUTER d LE L zav 4 b b c c d 8 54 287 Sg SuRROUNO surer pass f 8 ON 24V a s E 5 31 31 88 22 4 goal Bu el o UE 8 tg 5 8 2 s a 280 40 3 26038 8 8 3 AP ARES 9 8 588 ERE 90 8 PR v S m 5 8 3 3 1101 Sun Er BR dE d E EI s 146033 Page 18 a b acbd D 6 55 t LNO30568PH SAMPLING 162 FREQUENCY A woe r amp 4 DOM 192 o 8624 4410 48kHr SK Bes LM T CIRCUIT f9 4 27 Th gt 46054 0623 65 Page 18 gr 8 0625 ja MAIGSTA 154 r 4 0624 MAIGSTA 9405 406 0501 502 25021445 25014505 MUTING MUTING 9404 16401 DTAII4TSTP BA4558FDXTI Q407 408 Q409 503 MUTING CONT TONE AMP 25021445 2SAISO9AQSTA MUTING MUTING J6028 10 3 m b CIRCUIT 5 460231 51 05 18 amp 8 LB 9 5 8 8 595 2 1 g 16401 55 15 03 4 2 So 5 Bx amp 25 8 C1303 5 1006 0 Toc 5
26. 09 FEO 52 0802 805 4 TOS ESSE 81 orcii4ESTP 9802 o b MUTING CONT 55 8v f 28 ae gy 9803 1 806 36 aovfrav fov sev ov 19 LI Oan Oan Dan Oam Oam Oma Oam Oam O 1 BE 5 5 8 8 8 d 8 E z 8 4 8 a 8 6 5 4 53 gt gt 803 5 82 109K 3 205 t Sod 4s sv 99 6 4 s 4 8 8 e _ 2 25 8 82 2 PCMI7OOU TI 5 3 8 83 i 8 53 55 g 8 6 2 1 D A CONVERTER e 2 5 1 8 2 D 8 Oma ov 5 2 0 1 3 iv jov 5 5 ay aS e Ss i 85 DRONO Om Om Oml 84 88 88 oa sv jav jov 5 89061804 1 5 820 Th 5 1804 7 PDOO60 M MC74HCUO4FEL any DIGITAL FILTER INVERTER v 4 4 0 255 2 01 b 5 7 25 e hos o 48 1 802 881 lev ope 8 8 818 nn 5 22 872 3 voo Sus 2v 0I V 81 0 54 27 Sop SRI Sl 1 GND 2 D 5v ji8v sov 5v iov lov 9 2 818 a b Zo O Du Om Dam Om Dam Om O our SS 25 55558 b 2 38 8 8 B 5 454 16603 65 122 93 2 16805 5 Ho 8 s 4 3 55 53424141 515
27. 23 50 502 we dun FTTTL IFUTIITTT T UU DM 20 2 0080 Se f Se T EM CY DIGITAL G Nex AL 6 Gp 2 Wh N A 2 14 EM HV EP 10 O 9 706 D e 4 5 4 2 UN p 4 7 f 4 0 C al i SS 24 zoe j B 1 9 4 p 50 502 CIRCUIT BOARD DIAGRAM 25 SU X502 6 7 8 9 10 IN AC OUTLET FORCE EB EG AREAS n OUTLET C B FOR G 55 AC IN AC OUTLET AC IN 230 6 UNSWITCHED 230 240 50 6 21 236 240 EB 50 60Hz Power Source 6 CJ area To Power Switch lt ADJ BRN ORN IN AC 8 bay 0071 nst ri PLAYBACK TUNER 0552001 BLU i id AC IN ouTLeT 110 127 220 240 50 6017 TUNSWITCHEO 26 50 502 11 12 13 14 TERMINAL GUIDE OF IC S TRANSISTORS AND DIODES 4 AREA BU2040F T2 MC74HCU04FEL PCM1700U T1
28. 27472 4 7K ECFRIE272KR 257 2700P 20 A ECFRIE333KR 257 0 0390 68 2 ERDS2TJ752T 50 3 30 8 A ERDS2TII8IT ECAIHAP100B 509 ERDS2T3221 2 ERDS2TJ103 ECEADJKAA70B 6 3V ERDS2TMIM n 90 1556 8803214562 00 ERDS2TJ102 18 1K ERDS2TJ103 6433 ERDSZTJI04 1 4 100K 645 462 ECEALCKAZ20B ERDS2T2727 2 1K 1 010 ERDS2TJ471 ECEAICKA220B ERDS2TJ105T BCEAICKALOOB ERDS21V182 ECEAICKA220B ERDS2TJ392T ECAIHAPIR3B 38 01 5 Values amp Remarks 507 100P ECBTIHIO2KBS SU X502 ECBT1H821KB5 50 820P 1042 5 ECBT1H680J5 50V 68 ECEALCKA1008 50V 3 30 ECEA1HKA010B ECBT1E1037F 25V 0 01U ECQVIH104523 ECBTIH331KBS 50 330P ECBTLH220J5 ECBT1H151KB5 50V 150 ECEAOJKA101B ECAIHAP2R2B 50V 2 20 ECEAQJKA101B ECBT1H100J5 50V 10 ECEATCKA100B ECKT1H2232F 50V 0 0220 ECEA1CKA100B 18V 10 ECEAOJKM 0B 6 3V 470 2 5 4 7 ECEADJKA101B 1 1037 25V ECBTIEI032F ECALHAP330B 330 ECEALEKA100B 0020071008 1000 100 02 85 ECALEMIOIB 25V 1000 ECEALCKN100B ECALHAPSR3B 50V 3 30
29. 28 creation SWITCH 18701 48 PHONES SPEAKERS POWER 28 FUNCTION OF IC TERMINALS 601 50 502 m Symbol vo Function Description Symbol Vo Function Description 1 VDD 5V DIR1 Sumpling frequency detect signal input DATA 2 OUT Bus data signal out CNVSS GND 3 Bus clock signal out RESET Reset signal input XIN Clock signal input 5 S BASS 0 Super bass control signal output Clock signal output PWM 4 6 Volume control signal output vss GND KS3 7 Bus data signal input 1 Key scan signal input 0 Bus clock signal input Pull down voltage detect signal input 9 Rotary encoder VR601 signal input x 10 Volume control Input select control signal output 11 3 i Muting control signal output 13 MUT1 15 RECM Muring Sonia signal output for VTR 9 FL drive signal output 16 DATA 0 Data signal output 17 CLK Clock signal output The serial data inputted to 201 is 18 8181 latched by the STB pulse and the switch is set to ON according to data LED control signal output LED control signa output Super bass control signal output Surround control signal output Player control signal ou
30. BT1E2232F 25V 0 022U 0 120 ECBTIE1032F 25V 0 00 0 010 ECEAICKALOOB 16V 10 ECBT1HI04ZFS 50V 39 SU X502 CABINET PARTS LOCATION 50 502 6 7 8 9 24 For EB only 23 for E amp EG areas For E EB EG amp GC areas 524 12018 32028 42038 1 SU X502 Ref No Part No Part Name amp Description RHD30007 RKM0024A 2K SJP9205 2Y XTBS34 8JF71 Part Name amp Description Remarks PACKING MATERIAL CABINET SHORTING PIN SCREW REAR PANEL REAR PANEL 60 PACKING CASE RPN0412 PAD ASS Y ACCESSORY BOX REAR PANEL 60 1050 1 REAR PANEL 6 ACCESSORIES RGROIOSE 1 REAR PANEL CN 1071096 INSTRUCTION MANUAL ASSY RQF1097 INSTRUCTION MANUAL ASS Y ROF1098 INSTRUCTION MANUAL ASS Y 60 ROF1095 INSTRUCTION MANUAL ASS Y GN 100 4 INSTRUCTION MANUAL ASSY 60 00013 WARRANTY CARD E EB EG 5047186 WARRANTY CARD GN 1010030 BUTTON POWER BUTTON SPEAKER KNOB MAIN VOL KNOB BALANCE VOL CHASSIS ASS7Y FOOT RGW 125 K RFKJUXS02E K BAK PANEL LIGHT SERVICENIER LIST 1010084 PANEL LIGHT REKSUXSO2E K INSTRUCTI
31. CMITOOU TI MTM D A CONVERTER FL DISPLAY z802 1 32 SU X502 Notes 0 SIGNAL 1 DIGITAL PHONO SIGNAL gt SIGNAL PHASE DIFFERENCE SIGNAL lt lt 1 L 5 9504 505 b SUPER BASS SIGNAL VIDEO SIGNAL 204 0509 0501 10502 HEADPHONES SPEAKERS 18 116 0 AN 554F 1502 1 2 SIGNAL LEVEL DET 7312 8 601 604 8 0814 OUT SYSTEM 2 our CONTROL 5 9 3 2 5 ouT 5 5 OE 5 5 8 acik 6 gt a le da 1 9 10 2 23 22 START SYNCHRO contro TURNTABLE STOP BU2OAOF T2 603 ES KEY MATRIX LED DRIVE VOLUME 5601 614 0706 703 706 0701 i 2 662 663 665 667 67 0702 0713 5701 0707 70 POWER AC IN 0704 0705 AN gt pt re OUTLET UNSWITCHED ere 33 50 502 REPLACEMENT PARTS LIST Notes Important safety notice Components identified by A mark have special characteristics important for safety When replacing any of these components use only manufacturer s specified parts The parenthesized indications in the Remarks columns specify the areas
32. DIGITAL INTERFACE 2SC3312RSTA TRANSISTOR 10804 MC7ARCUOAFEL 1 C INVERTER 10808 0601 1 C DIGITAL FILTER DIODE S 1086 7000 11 6 D A CONVERTER 0811 SVIBAISOQFTI I C BUFFER ANP DIODE 1C901 140528 01 VIDEO SELECTOR WAAO5IMTA DIODE MMI20 DIODE TRANSISTOR 5 167 DIODE MA165 DIODE 28021448 TRANSISTOR 700 DIODE 2803311 0 TRANSISTOR 4047 DIODE 2SA1309A R TRANSISTOR DIODE 28021445 TRANSISTOR DIODE DTALI4ESTP TRANSISTOR DIODE 25021445 TRANSISTOR DIODE DIALL4ESTP TRANSISTOR DIODE DTALI4ESTP TRANSISTOR LED 28021445 TRANSISTOR LED _ 2SA1309A R TRANSISTOR LN873RP C LED 25114506 TRANSISTOR 10701 DIODE 2SA1309A R TRANSISTOR 10701 DIODE 28C3311A Q TRANSISTOR LN873RP C LED 2SALIO9A R TRANSISTOR LED ae TRANSISTOR DIODE 2SC3311A Q TRANSISTOR DIODE DTCIA4EKTOG TRANSISTOR 1 DIODE 34 MA4062 H Part Name amp Description SU X502 _ Part Name amp Description Remarks P300DLF DISPLAY TUBE MA4240H 165 DISPLAY TUBE MA165 MA4051 L MA4043M S MA4047MTA FUSE E EB EG GC 165 FUSE 00 MA4082MTA FUSE EB EG GC VARIABLE RESISTOR S SWITCH ES EWHF DAF20G15 V R BALANCE
33. Hz 60 Hz 220 V 08 dB 30 Hz 15 kHz For Third Reglon 50 Hz 60 Hz 110 V 127 V 220 240 V TUNER CD TAPE VDP VCR 15 Hz 55 kHz 3 dB Dimensions W x H x D 360 129 305 mm CD DAT AUX digital section 15 2 20 2 0 548 14 3 16 x 5 3 32 12 Tone controls Weight 6 5 kg 14 3 Ib BASS 50 Hz 10 dB 10 dB TREBLE 20 kHz 10 dB 10 dB Notes Muting 20 dB 1 Specifications are subject to change without notice Weight and dimensions are approximate 2 Total harmonic distortion is measured by the digital spectrum analyzer Technics SU X502 CONTENTS Page Before repaire Description of FL panel 21 Protection circuitry Circuit board diagram 22 27 Accessories E Terminal guide of IC s transistors and diodes 27 Location of controls Wiring connection diagram 28 COMMACHONS y centur e poe o An Nera ete dares Function of IC terminals 29 30 Digitalization of audio signals 8 Block diagram soss crete crias 7 taba 31 33 Disassembly 9 12 Replacement parts 34 39 42 Schematic diagram 13 21 Cabinet
34. ISJ271E ERDS2TJ102 1 48 IK ERDS2TJ334 ERGISJ221E ERDS2TJ821 140 820 R221 222 ERDS2TJ822 ERDS2TJ102 1 48 1 R219 220 jERDS2TJ222 ERDS2TJ392T ERDS2TJ103 ERDS2TJ223 ERDS2TJ473 ERDS21J183T ERDS21J153 ERDS2TJ473 1 4W 8 2K 1 AW 2 2K 1 8 3 9K 10K 1 AW 22K 47 1406 18K 15K ERDS2TJ102 ERD25FJ470 ERDS2TJ105T Vm V IN ERDS2TJ392T R601 ERDS2TJ223 1 22 R602 604 ERDS2TJ393 l W 39 ERDS2TJ223 ERDS2TJ393 ERDS2TJ100 1 0 3 1 22K 1 4W 39K 1 44 10 ERDS2TJ104 1 100K ERDS2TJ334 1 4 330K 3 ERDS2TJ6R8 ERDS2TJ151 ERDS21J104 ERDS2TJ103 100 68 12 150 1 100 1 48 10K ERDS2TJ103 10K ERDS2TJ222 40 ERDS21J472 4 7K ERDS2TJ332 2 2K 3 3K 1 48 1 48 ERDS2TJ152 1 AW 1 5K ERDS2TJ103 10K ERDS2TJ103 1 4 10K ERDS2TJ182 1 AW 1 8K ERDS2TJ151 150 ERDS2TJ332 1 0 3 3K ERDS2TJ223 1 AW 22 ERDS2TJ334 ERDS2TJ222 1 2 2K ERDS2TJ224T 144 220K ERDS2TJ102 1K ERDS2TJ332 1 49 33K ERDS2TJ332 1 AW 3 3K ERDS2TJ100 10 ERDS2TJ103 128 10K ERDS2TJ223 1 AW 22K ERDS2TJ104 ERDS2TJ102 1 44 1K ERDS2TJ393 39K ERDS2TJ105T 1M ERDS2TJ103 1 48 10K ERDS2TJ223 1 lw 2 ERDS2TJ222 ERDS2TJ222 1 2 2K ERDS2TJ622T 1 AW 82K ERDS2TJ563 56K
35. ON MANUAL 4 0096 PANEL LIGHT NM RQTLOOO B INSTRUCTION MANUAL EB GN is one i ora jewec RGUMT2 C KNOB S DYNAMIC MA AC CORD EB RGUO473 K1 BUTTON S DYNAMIC UP DOWN AC CORD 00 A 0004 CORD 00 SJP9215 AC PLUG UADAPTOR GC RGUO474A K BUTTON TAPE SHEL97 2 HOLDER 5 5 59231 AC INLET COVER SJS0234A AC INLET COVER EB EG 60 GN E EG EB 00 Pad P4 Pad 0 P1 36 RWJ1803200KQ FLAT CABLE 37 RWJ1805110KQ FLAT CABLE P2 Pad 9 B Ass y 412 Printed in Japan 42 F910309500HS KH
36. OR a 6 Part Name amp Description FUSE HOLDER E EB EG GC 900606057 SOCKET 700606057 SOCKET RELAY RIUOGOGUST SOCKET RJUOGOGOST SOCKET RELAY RJT060B07 CONNECTOR RJTO60B07 CONNECTOR RJTO60B07 CONNECTOR 0 100007 CONNECTOR 0 106080 CONNECTOR RJTO60B05 CONNECTOR RITOGOBO5 CONNECTOR RJT G BOS CONNECTOR 51 1704 4 RJTOO3KOLOM1 CONNECTOR 10 0 100301001 CONNECTOR 10 CONNECTOR 8P JRITOO3K008M1 CONNECTOR 8P 515505818 500 5 5185058188 SOCKET 5P 5795058188 17050805 71060805 RJTOGOBOS SJF3069 5N 81830691 SJF3069N JSQCKET SP CONNECTOR CONNECTOR CONNECTOR CONNECTOR JACK S TERMINAL PHONO TERMINAL TAPE TERMINAL TUNER CD TERMINAL DAT VCR SJF3069 5N TERMINAL VOR VDP SJF3069N TERMINAL EXT RJROOS 4M TERMINAL SPEAKER A SJF3068 6N TERMINAL SPEAKER SURROUND RJROOS 4M TERMINAL SPEAKER B SJJ145A 1 JACK HEADPHONES RJJ33T01 SYNCHRO SYSTEM CONT IN 81433101 SYNCHRO SYSTEM CONT OUT RJJ33T01 SYNCHRO CONTROL TO TURNTABL 5 07 2 TERMINAL DIGITAL INPUT SJF3061N MONITOR VCR VDP d 53593338
37. ORDER AD9103051C8 ervice Manual Amplifier Stereo Integrated Amplifier 2 U X502 jE 25 MAY 1991 5 5 5 ul 113 5 AEN 60 Black Type Continental Europe EB Great Britain EG F R Germany amp Italy 00 GC Third Region SPECIFICATIONS DIN 45 500 AMPLIFIER SECTION Super bass 60 Hz 8 dB DIN t Output voltage power TAPE VCR REC OUT 150 mV 1 kHz THD 1 96 2x60 W 8 balance TUNER 250 6 300 Hz 1 0 dB Channel separation TUNER 1 kHz A SPEAKER 8 Total harmonic distortion Headphones output level and impedance 520 mV 330 Q rated power at 1 kHz 1 8 0 Load impedance Harmonic distortion A or B A and B 80 160 half power at 1 kHz analog section 0 009 8 Q SURROUND 80 160 Residual hum and 0 3 mV Damping factor 30 8 0 Input sensitivity and Impedance Wi VIDEO SECTION PHONO VIDEO OUTPUT 1 75 Q TUNER TAPE 150 mVi22 VCR MONITOR 1 90075 0 VDP VCR 200 22 Maximum input voltage 1 kHz RMS PHONO 100 GENERAL SIN rated power 8 Power consumption 330 W PHONO 75 dB IHF A 79 dB Power a paly TUNER TAPE VDP VCR 82 dB IHF A 83 dB For Great Britain and Oceania 50 Hz 60 Hz 230 240 V Frequency response For Continental Europe F R Germany and Italy PHONO RIAA standard curve 50
38. TPUT TERMINAL CIRCUIT R920 39K 9901 25 1309 05 INTERFACE R249 5 0 9206 2SAI3O9AQSTA REGULATOR Q206 l v 06039 9 9 1 x ram 5 JK 20441 rL DAT OUT nee GR ch WW C227 1008 2 JK 204 2 P 85 7 eh cog REC OUT x CR ch 4 sd a akosa 1 Tags R209 52 1 rL ch 210 PLAYBACK en G 9202 JK 205 2 rL ch O e VDF 225 1002 LR ch t Fae ge 8 r L PA 9 Q201 202 m OUTPUT 2 2 4 m 22 177 i L INPUT 5 R JK206 2 25021445 MUTING CONT 8255 C255 ISk 6 1 252 BA4558FDXTI BUFFER AMP 9205 25 33 IAQSTA REGULATOR 16 e Y eaoca Y 2 13 14 15 16 17 TUNER CD TERMINAL CIRCUIT Phono signo
39. e comparative output 18 vCOadjustment Resistor data output LED 14 VCOIN VCO control signal input 15 VCO VDD Digital VDD 91 806 Symbol Function Description Function Description OUT MSB ADJ R Analog ground Current output Rch Offset filter Rch Servo filter Rch V OUT L Summing junction Lch Voltage output Lch Digital positive supply DATA L Data input Lch Clock input VDD Digital negative supply LEC Latch enable control input DATA Data input 6 VPOT 7 Analog positive supply 8 D GND Digital ground 9 Analog negative supply SERVO 10 DC L Servo filter Lch 11 MSBADJ _ L 12 17 DC offset fitter Leh 13 TOUT L 0 Current output 14 ground 30 Digital ground Voltage output Rch Summing junction 50 502 BLOCK DIAGRAM AN6 58SFE2 EQ AMP PHONO SIGNAL TC9164N 8 4558 5 pM indicates pin NO of right channel PLAYBACK L our PLAYBACK VCR L M5283P 1 251 ELECTRIC VOLUME C
40. fore processing they have the following advantages that prevent deterioration of the sound quality 1 Resistance to noise 2 Extremely low distortion 3 Flat even frequency response 77 Analog signals Qy Original sound gt A Deteriorated signal Met TES Digital signals 4 Original sound Even if noise occurs Processed as uniform series of Os and 1s without distortion gt ETE Digitalization example recording to CD and play of CD Recording to CD Analog signals LIE CD play Former method Compact disc player JUUL Digital analog conversion Analog signals Analog digital conversion Amplifier signals are digitized if it is known to what degree of minuteness the human ear can distinguish sounds it is then possible by using that data as the standard reference to digitize them by dividing analog signals into minute pieces after which they can be transmitted with a high degree of precision and thereafter recorded and played back in the digitized format Analog signals are sampled quantified and encoded Amplitude voltage Time Sampling Analog signals are minutely sub divided on the lateral axis Amplitude voltage Time Quantification Sampled signals are minutely sub divided on the vertical axis
41. indicator S DYNAMIC SOUND Super bass button indicator SUPER BASS 5 Headphones jack PHONES DIGITAL INPUT GND terminal 29 VCR out in terminal Cooling fan Surround sound speaker terminal 32 Main speaker A terminal 3 Main speaker B terminal CD digital input terminal 35 DAT digital input terminal 36 AUX digital input terminal 37 AC outlet AC inlet SU X502 5 Make connections to each component in the system by using stereo connection cables not included See the operating instructions of the tuner ST X902L for details Stereo connection cable White L Red R SYSTEM CONTROL IN SYSTEM CONTROL 6071 Connecting audio components TAPE terminals Connect a tape deck Tape deck not included 0 SYSTEM CONTROL OUT terminal This terminal is used to connect a Technics tape deck with the SYSTEM CONTROL IN terminal Connect a turntable Q Turntable not included Q 0 OUTPUT 0 h B GND terminal This terminal is for use with a turntable which has a ground wire CONTROL terminal This terminal is used to connect a Technics turntable with the REMOTE SYNCHRO terminal EXT terminale Connect a stereo sound processor Stereo sound processor not included LINEIN LINE OUT AOR 0
42. l rl lt PHONO LR JK201 1 261 C200 TC9 64N 6 022 INPUT SELECTOR b 25 JK202 n rL ch ie R232 sat REC OUT C200 J4TP 27K LR ch 58 2 58 55 rL ch SFT 7 88 PLAYBACK b 0 4 ER ch Sat aves 8 88 1 06203 55 ch K LR ch JK203 2 pL ch Rer 298 8 2K 88 48038 42093 D TE s 39 TET O lt lt EE a 0 b 2 3 4 5 J210A 14 b E KE A is 13144 4 4 5 42070 7 4 5 8v 9721 5 4 0 5 __ 072 929 8 3 14 6 MUTING CONT 20 mm SIE 0 mE c d e circuit 17 SU X502 18 19 20 21 22
43. protection circuitry functions the unit will not operate unless the power is first switched OFF and then ON AGAIN ACCESSORIES power supply cord 1 WAC plug 1 Configuration of power supply cord differs according to area 187 EG area only SJP9215 For GC area only 5 173 For GN area only 54 188 For EB area only RJA0004 For GC area only SFDACOSEOS For others LOCATION OF CONTROLS Power switch POWER Speaker selectors SPEAKERS Muting indicator MUTING Volume level indicator VOLUME LEVEL Volume control VOLUME Sampling frequency indicators SAMPLING FREQUENCY Surround sound button indicator SURROUND Tone controls BASS TREBLE ei e ESSE CS Active current sensor switch Phono input terminal Tape rec out playback terminal Tuner input terminal CD Input terminal DAT recout terminal VCR recout playback terminal EXT output input terminal VDP input terminal MONITOR terminal System control IN OUT terminal Control terminal to turntable 88 516654 27 SU X502 9 Balance control BALANCE Volume preset button VOLUME PRESET 1 Input selectors indicators 2 Super bass level control buttons indicators SUPER BASS LEVEL 3 Super dynamic sound button
44. s in the direction of the arrow Ref No 7 Procedure 7 Removal of the Sampling Frequency Indicator Lens Ref 9 Removal of the AC OUTLET AC IN Procedure 1 9 Release the 4 claws 10 Removal of the D A converter P C B 1 Remove the screw 2 Remove the D A converter in the direction of the arrow VCR input output N P C B Removal of the other P C B eRemove the P C B in the direction of the arrow D A converter P C B Procedure 1 11 Main Front panel 3 Remove the screws D 5 Remove the bottom chassis 4 Remove the front panel unit in the direction of the arrow 6 Reinstall the front panel unit to the main Connect 2 flat cables 501 J502 11 SU X502 Ref No 12 Procedure 1 11 12 Removal of the Power Transformer 1 Unsolder the power IC or regulator transistor 2 Remove the 4 screws Q Power IC Regulator transistor Regulator transistor Power transformer Note When mounting the power IC or regulator transistor apply silicon terminal compound
45. tch SUPER BASS LEVEL 5613 Super bass level control switch SUPER BASS LEVEL 95614 Surround sound switch SURROUND 8701 Power switch POWER CD signal Lch Phono signal Lch Positive voltage lines Negative voltage lines Super bass signal Phase difference signal Recording signal amc emm Indicated voltage values the standard values for the unit measured by the DC electronic circuit tester high impedance with the chassis taken as standard Therefore there may exist some errors in the voltage values depending on the internal impedance of the DC circuit tester Important safety notice Components identified by A mark have special characteristics important for safety When replacing any of these components use only manufacturer s specified parts Caution IC and LSI are sensitive to static electricity Secondary trouble can be prevented by taking care furing repair Cover the parts boxes made of plastics with aluminum foil Ground the soldering iron Put a conductive mat on the work table Do not touch the legs of IC or LSI with the fingers directly 36 26 1122 UM dB 808 680 000 000 000 000 000 NI 000 080 000 000 000 000 X 000 000 000 000 000 000 000 16 46 4G 25 16 a 22 6 0 b P3 c c
46. tput Power supply detect signal input 805 1 Symbol Function Description Function Description 1 XIN Clock signal input Select the output data 2 XOUT Clock signal output MODES MODE2 OUTPUT DATA 3 MODE1 Master clock input H H 18 bit 4 CKOUT NC ud t 20 bit 5 LRCLK clock input 6 DATA Serial data input 7 BCK Bit clock input Leh signal output 8 vss iE GND Rch signal output Ward clock output Bit clock output To be connected to a power supply 5 V SU X502 803 a Symbol Vo Function Description Symbol Function Description 1 IN1 VCO OUT VCO output 2 IN2 Digital audio interface signal input VSS1 VCO ground 3 3 VCO adjustment Capacitor 4 Input select 1 VCO adjustment Capacitor 5 1 52 Input select 2 L 16bit H 20bit 6 OUT Input data select signal out i 0 Data bit clock output 7 TEST VDD O Audio data output 8 RESET Reset signal input 0 J_Lch Rch data output H Leh 9 VCO control signal input 10 55 Digital ground Enphasis data output 11 1 PCVS VCO control signal input 0 PLL data error output error 12 PCOUT Phas
47. ure 1502 1 1 2 7 1 Remove the 2 connectors 4501 J502 Removal of the Connector 1 Remove the 6 screws 2 Remove the cabinet in the direction of the arrow cable Ref No Removal of the Power Switch Speaker 1 Connector 3 Select Switch Procedure 1 3 Power switch Speaker select switch 2 Remove the 3 screws Q 9 eRemove the 2 screws Q 3 Remove the front pane unit in the direction of the arrow ix dk Removal of FL Drive P C B Procedure 4 4633 23 11 16 s cea C longer than 22 mm 1 056 a wrench of the dimensions 6514 J632A shown in the illustration above to remove nuts 1 Remove the 4 knobs 3 Remove the 3 screws O 2 Remove the 4 nuts 4 Remove the connectors J631A J632A 633 SU X502 Ref No Ref No Removal of the Operation P C B Removal of the Operation Buttons 5 6 22 o gt 2 gt 4 gt 5 1252545556 Lens 4 Button 22 DS Button Lens Button Lens Pull out the buttons and Lens Claw 1 Remove the 4 screws 2 Release the 4 claw

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