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1. 605 605 602 603 25C33l IAIRTA 2SA9330RSTA eis NP Mk ur cul MOTOR DRIVE MOTOR DRIVE Tn 4 UNAIISTA 2SDBSSRTA i oR pt Cou MOTOR DRIVE 0822 1 MOTOR 20947 a UN4IIITA lt 995 0823 LEO OR IVE 301 s SF UNAIITA UPCASTOC Hi 0608 AME CTREBLE ay g UMEISTA 6320 R314 YR302 2 maio C38 S MOTOR Cont 2200P 39K I00KiC 6 018 DEOR LNOI4SO0S5PH Cp T IS TANDB Y 5 8 0841 UN421F TA 8652 R602 390 R462 R564 1WI50 1180 q4 B HAIG 8 E c 2K 621 0608 218 LED DRIVE I a 2 X 5 orive AM 8 gu x 4 95 d 9 3 e a Dum 9 flt 25 2SA9S2EFPTA a Sia Kc Wh 4 RELAY ORIVE BASS RE 53 G HEADPHONES m LSS E 250351 1 18 5 S Q604 254923085 MOTOR DRIVE 132058 0502 POWER 28AS92EFPTA 1502 ggg RELAY DRIVE 22 Anemos K 6574 0501 25 992 4x501 RELAY DRIVE SPEAKERS Q455 ne 28Ai309AIRTA 99 1 CLASS AMP Bx 4 Roh 2503 MAIS2TA 0701704 P300DiF I emi pal E amA i PEE 230V CE EGI 0 4 mos zov m 0760uHr uo 9701 2SB62 AQRSTA RELAY DRIVE 0710 713 1593520078 c
2. ces 29 SU A900MK2 Ref No Part No Part Name amp Description 201 EWCPG3020A15 MAIN VOLUME CONTROL EVJO2QF01G15 V BALANCE sat 8 5 EUN DET pg e omo eoWPONENT COMBINATIONS VR301 302 1 01015 V BASS TREBLE CONTROL 2801 RCDHC 278N REMOTE SENSOR 9G Ld RLQZ271M L101 104 ELEXTIOIKAS COIL L251 252 ELEXTIROKAS COIL 1501 504 SLQY18G 10 801 ELEXTIOIKAS _ TRANSFORMER S RIP7LSBO01 W POWER TRANSFORMER RTP7LSEO01 W POWER TRANSFORMER __ OSCILLATORS X801 EFOGC4004A4 OSCILLATOR 4MHz p EDEN 101 104 251 252 sorso E NU m p NND SOCKET 5P 815146604 CONNECTORCAP CONNECTOR 3P CONNECTOR 10 CP803 RJTOG6HO5A CONNECTOR 5P ues pu E a AC INLET JK201 SJF3069N 1007 sao INPUT TERMINAL D A SJF3069N IN OUTPUT TAPE2 DCC JK204 SJF3069N IN OUTPUT TAPED SPEAKERS TERMINAL EB SPEAKERS TERMINAL E EG GC GN pr 0 XBA2C31TB0 250V 3 15A XBA2C63TBO FUSE 250 6 ESD26200A SW VOLTAGE SELECTOR 5103 RSP2D010 J 5 PHONO SELECTOR
3. 101 104 25 170 1 2 TRANSISTOR Q401 402 253898 TRANSISTOR 408 250263185 TRANSISTOR Q409 410 25 112385 TRANSISTOR 51 452 2SC2631RSTTA TRANSISTOR Q453 454 2SC3311AIRTA TRANSISTOR Q455 456 2SA1309AIRTA TRANSISTOR 501 503 2SA992EFPTA TRANSISTOR 601 2508938 TRANSISTOR 603 604 25A933QRSTA TRANSISTOR 005 606 25C3311AIRTA TRANSISTOR 607 UNA113TA TRANSISTOR 608 UM2I3 TRANSISTOR 610 2SC3311AIRTA TRANSISTOR 611 UN421FTA TRANSISTOR 701 2SB621A R TRANSISTOR 151 25017650 TRANSISTOR 0752 238941 TRANSISTOR 0705 1583520078 DIODE Hosp D706 MA165 DIODE ccce uu D709 MA165 DIODE A E EB EG GN A 710 713 15835200 A e T 751 752 DIODE 752 754 165 DIODE D801 802 LNOS305PH L E D 809 LNO18305PH_ IL E D 0812 814 165 DIODE ua E e E c MN m c2 ER 0753 2SK330GRYTA TRANSISTOR D815 1SS291TA DIODE Q754 2SJ105GRYTA TRANSISTOR 0816 MA4068L eir mun 804 809 RANSISTOR Q811 812 0813 814 Q817 2503311 TRANSISTOR ks wer n msn Q822 823 TRANSISTOR 822 823 LNOM4305PH pu csi 1 sole a sisis SISSE 0825 828 MA165 DIODE 0829 MA700 DIODE poe ees D830 832 MA165 DIODE ear JMNIMLERESISTRO
4. VOLUME 475 gasoa 54 D 1 ai E QB26 1 P17 SRDY output TRE Pur amp ten anen Ls 082 7 b 5 a 082534 Contro 5 el Eel Treble P16 CLK Remote control signal output ive si SIOSIPHONO SELECTOR EN Ls Boas pu g put Remote control receive signal UNER 5 3 F T T P15 SOUT LED TAPE 1 drive signal output pt 1 MOTOR M i por P14 SIN LED TAPE 2 drive signal output 21 P32 CNRO Power SW signal input Oo 8 ompa eference ax 0d 4 d P13 TI LED SOURCE drive signal P33 CNRI Connectedto reference Jum 8 2 output voltage line ic ion cmn P12 TO ua 8 i i Ea ER le mzao Strobe signal output for input Ec 8 Logic voltage 2 i 40 2 N sil 2 2 5 Li ____ s H j m o Input select LED drive signal Selector IC 201 PLAYIN 1 ly 5 l Rectounn s po POWER o Po oe Clock signa output for Input UT l ee ee t Selector IC C201 wee B 2 0 P23 IN3 Motor volume control drive bee re 5 wet signal output REC OUT v P40 10 P22 IN2 Data signal output for Input indicotes pin i 250241 9 68 2891 ENS L
5. ORDER NO AD9404112C8 Service Manual Stereo Integrated Amplifier Specifications DIN 45 500 20 Hz 20 kHz continuous power output both channels driven 2 x90 W 8 Q 1 kHz continuous power output both channels driven THD 1 2 x 100 W 8 2x 140 W 4 63 Hz 12 5 kHz continuous power output both channels driven THD 0 7 2 x 90 W 8 Q 2 x 125 4 Total harmonic distortion rated power at 20 Hz 20 kHz intermodulation distortion 50 Hz 7 kHz 4 1 SMPTE rated power 0 01 8 0 007 8 Q Residual hum and noise 1 mV Damping factor 60 8 Q 30 4 Q Headphones output level impecance 540 mV 330 Q Load impedance AorB 4 160 and B 8 160 Input sensitivity impedance PHONO MM 2 5 mV 47 PHONO MC 170 uV 220 Q TUNER CD AUX TAPE 1 TAPE 2 DCC 150 mV 22 Phono maximum input voltage 1 kHz RMS MM 160 mV 66 MC 12 mV IHF 66 S N rated power 40 PHONO MM 78 dB 85 dB IHF 66 PHONO MC 64 dB S 250 uV 66 dB 66 TUNER CD AUX TAPE 1 TAPE 2 DCC 91 dB 100 dB IHF 66 S N at 26 dB power 4 PHONO MM 68 dB PHONO MC 63 dB TUNER CD AUX TAPE 1 TAPE 2 DCC 70 dB Technics Amplifier oU A900MK2 Colour Black Type Areas Suffix for Area Colour Model No epe Asia Latin America Middle Near East and Africa S N at 50 mW power 4 PHONO MM 64 dB TUNER CD AUX TAPE 1 TAPE 2 DCC 64 dB
6. MUTING R401 OSC2GSIRSTTA 3I D i FLAT AMP OUT ad E M 9 0409 410 p 2SAIT2SRSTTA FLAT 1 0816 X ch 5 UN42IITA oz POWER SUPPLY D804 809 CONT PLAYUN LNOI8305PH a ee Q811 812 819 82I UNA2IITA LED DRIVE 09135 MAIGSTA 212 cei 2 I CBs 50747 D 2 aoe c 25 5 c TAPE2 DCC i s x dtu LA2AS AAAS G00 L ch 59 53 15 5 gt 9810 582 86022 R623 f PLAYUN cle 820 L5K IBK 22K als D822 823 R ch 5 8 LNOL4305PM D824 NOI8SOSPH 2 1269 801 MONITOR 5805 tTAPE2 0CCI 5806 TUNER 5807 PHONO nnam INPUT SELECTORS zi Sp pe ET F 438v A 0751 0752 0753 0754 AL 2501265 2SB94IPQ 2SK330GRYTA 25 JIO5GRYTA t 1 E INPUT SELECTOR REGULATOR REGULATOR STABILIZER STABILIZER JK801 E 12v 17 3 73 14 15 SU A900MK2 SU A900MK2 SU A900MK2 SU AS00MK2 Power Switch Headphones Jack Power Transformer 1 2 Power Supply Circuit Parts list on page 297 32 16 17 18 19 20 21 22 24 25 26 27 28 29 30 POWER SWITCH CIRCUIT
7. 081 103 3 50 0 00 93 50V 0 0390 ECALHPXS010B 50V 1U ECQBLHA72JF3 50V 4700P ECQBLHLO3JF3 50V 0 010 1 1 1 1 HR 05 03 3 5 3 10 5 10 500 82 1 3 ul 21 0123 126 ECBT1H270J5 127 128 ECBTIHIOIKBS 50V 100P C129 130 ECBTIEI037F 25V 0 010 Part No Values amp Remarks 0795 756 ECEALHBZAR7B 50V 4 10 0757 758 ECA2APXS100B 100V 10 C801 803 ECBTLC103NS5 16V 0 010 C804 C201 214 50V 100P ECAIAMIO28 10V 10000 251 252 ECEAOJKA018 B 3V 100U 6805 ECEALHKARA7B 507 0 470 _ 253 254 ECBTIHIO4ZPS 50V 0 10 C806 ECEAIHKA2R2B 50V 2 2 303 304 ECCRIHIO1KS 310 ECBT1H390J5 evar 315 316 5223 50V 0 0150 EET 22 323 324 21 85 50V 3 can C809 ECBTICIO3NSS 18V 0 010 C814 815 ECATHPXSAR7B 0820 ECQV1H224JM3 50 0 220 CB21 ECBTIBAT3ZPS 50V 0 0470 63 gt gt gt 2 2 c gt cat c 5 e e cole 5 eo e Pile gt proj 7 7 C409 410 50V 39P 457 460 ECEALHKAIR3B 30V 3 30 0501 504
8. 1 4 820 AN 12K R820 ERDS2TJ122 1 R821 ERDS2T3152 1 4 1 5K 8822 ERDS2TJ182 1 1 8 R803 ERDS2TJ390 1 48 39 110 ERDS2TJ220T 1 4 519 520 ERDS1FVJSRST 1 28 6 8 111 114 ERDASIGS32T 1 4 3 3K 16 ERDAS3GA72T 1 8 4 7 18 ERDS2IJI51 L 4W R119 120 J ERDS2TJ100 E 82 12 ERSZIJID 148 10 1 522 ERDS1FVJ100T 1 10 A 527 880521223 1 4W OoOO ERDS2TJ824 1 AN 820K ERDS2TJ124T 1 4H 120K ERDSIFWATZT 1 2H 4 7K i MN 10 A 551 8805277222 w im ERGISJISZE M A e mim 29 22 en en oo en Iac bo gt um co 1 48 10 RI23 124 ERDS2TJI81 1 4W 150 125 126 ERDS2TJ682T 1 44 6 8K E gt zo en B Rz s ium um DEPT 25 en ch en en rm 8580 ERGISJIB2E 562 IERGISJISIE 8563 564 ERGISJIBIE 29 e e T en gt en R217 218 ERDS2TJ334 1 4 330 R251 ERDSIFVJLOOT 1 29 301 302 ERDAS3G561 1 49 2805214102 ERDS2TJ223 22K R831 ERDS2TJ104 1 4N 100K 8832 805273102 1 4W IK R833 ERDS2TI103 1 48 10K 8565 570 ERDS21J223 1 48 R604 l W 18
9. SPEAKER A select signal output 12 P20 INO Bhp pos quomm ommo A SPEAKER B signal input SPEAKER B select signal output 1 4 MICRO COMPUTER j 0804 609 13 PI2 10 Selector Relay drive signal output T m n 0512 pud Oscillator signal O terminal yoo D813 0812 CONTROL Ao Bt ier pre eo ge 4 MHz OUT 801 8 1 1 Q X V GND terminal Power supply 45V Audio muting contro signal output PIA SIN Q PI3 TIQ a gt NIDIA XIN OUT SS P2 INI 1 QBI97 821 082252824 12 PissouT d P20 INO suo 15 X OUT drive a 9 8 5 16 O PI7 SROY Q POI Q PO2 a Q822 823 0801 802 LED ae 1 95 SVI3205B POWER AMP pessum secs 2 CB H m RSN6000A 8 5 drive 602 653 ERA VN VN Az 0401 405 407 409 HEADPHONES 0402 406 408 4101 945310454 Brige 1 di amp Flat amp network j 2 0 4 l A 1 2 SPEAKERS class AA Q Q451 tQ4521 Q455 04561 1 Current 1 502 1 2 ro stobilizer RSN6000A M5218AP FAN ad 0601606 MOTOR Relay drive 2 ENE x 2 We For E EB EG GN ureos D70I 704 a Motor 0607 si control 0608 0612 O 1
10. with the letter L or coloured RED Under no circumstances should either of these wires be connected to the earth terminal of the three pin plug marked with the letter E or the Earth Symbol L Before use Remove the connector cover as follows How to replace the fuse 1 Remove the fuse cover with a screwdriver SU A300MK2 Front Panel Controls 3 To open the panel cover SS PUSH OPEN No Name No Name D Power STANDBY b ON switch 7 Remote contro signal receptor POWER STANDBY b Press to switch the unit from on to standby mode or vice ver sa In standby mode the unit is still consuming a small amount of power 2 STANDBY indicator STANDBY When the unit is connected to the AC mains supply this in dicator lights up in standby mode and goes out when the unit is turned on 8 Operation indicator OPERATION When the power is switched ON this indicator illuminates after about 4 seconds when the unit is in the operating condi tion If an abnormal condition in the circuitry is detected such as DC voltage appearing in the output or a short circuit of the positive and negative wires from the speaker ter minals the protection circuit functions and this indicator will not illuminate 4 Tone control button 5 Volume contro VOLUME 6 Tape monitor button indicators TAPE MONITOR SENSOR Receives the signals from the remo
11. 1 on page 10 Botoom cover Remove the 3 screws and then remove the sub heat sink and angle Remove the 4 screws and then remove the power IC s Sub heat sink PowerIC RSN60004A wen oe RC Mon bo gt RTI a Qo c f m o mc CAUTION ae iH 1 e After replacing the power IC apply a sufficient quantity of compound grease RFKX0002 SZZOL15 between the 2 heat sink and the power IC Radiation of power IC 107 cut the 9 marked portions with the nipper 4 5 al Tighten enough the screws after replacing ihe Screw XTB348J 22 power IC deum to fix TE Otherwise the heat radiation works little ME the Bottom cover ay me ZA Qum um 0 0 2x m XTB3 16JFZ Black XTW3418T Prepare this screw to x fix the Bottom cover XTB348J Black SU A900MK2 SU A900MK2 SU A900MK2 Schematic Diagram eMain Operation Switch Volume Tone Amp Circuit Paris ist on page 29 32 1 2 3 4 5 6 7 8 97 10 11 12 13 14 15 Main circuit PHONO EQ INPUT SELECT V AMP CLASS AA POWER EJ OPERATION CIRCUIT volume circuit 3 tone awe circuit 16251 N4IIITA UN42I
12. ECAOJPXSIO1B 6 3V 1000 0505 506 ECQVIE473JM3 50V 0 0470 507 ECEAICKALOLB St il EET 1 0 50 6 531 532 ECBT1C332KR5 16V 3300P C601 _ 7 50V 0 470 TY V 27 V w 603 om me mno c 715 ECEAIHKA2R2B ei ECALEPXS470B 3 ca 751 754 32 SU A900MK2 SU A900MK2 B Cabinet Parts Location 2 o o L o z BI o ai uj 34 33 Ref No Part No Part Name amp Description CABINET PARTS LIST RKMOOBSC 1K P1 Pi BS3 8JFZ1 RWJ3907330QQ FLAT CABLE 7P W702 RGK0588 T ORNAMENT RUBBER RGRO171E C1C REAR PANEL EB RGRO171A EB REAR PANEL E EG RGRDO171A FlC REAR PANEL RGRO171B CO REAR PANEL RGUO609 K BUTTON PHONO SELECTOR RGW0203 K KNOB VOLUME RKA0053 A FOOT 0 RKU0051 K RUBBER BASE 10 12 RMA0818 13 RMA0744 1 14 BOTTOM CHASSIS s mois simo sur 15 18 17 TUBE 850322 SHIELD PLATE PHONO RKF0314 K DOOR ORNAMENT po UL 20 RGLO189 Q PANEL LIGHT A p oes RGLO190 Q PANEL LIGHT 22 RGUO282 BUTTON TONE 23 RGUC882 K BUTTON POWER poro aaron b o o mum zo
13. Frequency response PHONO MM RIAA standard curve 0 8 dB 30 Hz 15 kHz TUNER CD AUX TAPE 1 TAPE 2 DCC 3 Hz 80 kHz 0 3 dB 0 dB 0 3 dB 20 Hz 20 kHz Tone controls BASS 50 Hz 10 to 10 dB TR BLE 20 kHz 10 to 10 dB Output voltage TAPE 1 TAPE 2 DCC REC OUT 150 mV Channel balance AUX 250 Hz 6 3 kHz 1 Channel separation AUX 1 kHz 50 dB GENERAL Power consumption 315W Power supply For E and EG areas 50 Hz 60 Hz AC 230 V For EB and GN areas _ 50Hz 60Hz AC 230 V 240 V For GC area only 50 Hz 60 Hz AC 110 V 127 V 220 V 240V Dimensions W x H x D 430 x 136 x 365 mm Weight 9 4 kg Notes 1 Specifications are subject to change without notice Weight and dimensions are approximate 2 Total harmonic distortion is measured by the digital spectrum analyzer 3 For areas except Europe The specification values given have been measured while using a 240 V power supply For EB area only This apparatus was produced to BS 800 SU A900MK 2 Contents Page Page C S 2 e Schematic Diagram 1 1 6 eene tnn nnne 14 20 Protection 2 Printed Circuit Board Diagram eene 21 25 ACCOSSOL OS 2 Wiring Connection Diagram eere eere 26 Caution for Mains Lead seen enne nnne 3 B
14. ass y remove the volume P C B RFKGA900MKEB M 129 Voium Knob RGWO203 K 5 Nu RHN90001 Remove the 14 screws Tone amp P C B Remove the knob with pushing byO screwdriver toward the P C B when the knob is hardly removed 9 6 XTBS348JFZ1 Black E EG RGRO171A EB x RGRO171E C1C RGRO171B CC GN RGRO171A F1C 3 Checking for the Main P C B Follow ihe disassembly procedure described in item 1 on page 10 Remove the 3 screws lt C gt Remove the 15 screws andconnector Front panel ass y VA ia RFKGA900MKEB Rear panel Connector CN601 ER Lift the main P C B off the retention post on the bottom chassis Remove the main P C B in the direction ofarow D Q ER Instali the rear pane temporarily on the main P C B again y Rear panel Retention post of the bottom chassis Connect the front panel ass y of the P C B connectors to the main P C B and set it as the illustration below Main P C B Solder side mm 2 2 IXTBS348JFZ1 Black XTWS3 8T Black Q O XTB3 20JFZ Black SU A900MK2 4 Replacement for power When remove the bottom cover cut the joints 4 as shown below 9 joints GI Follow the disassembly procedure described in
15. fitted in this plug Should the fuse need to be replaced please ensure that the replacement fuse has a rating of 5 ampere and that it is approved by ASTA or BSI to BS1362 Check for the ASTA mark gt or the BSI mark Y on the body of the fuse If the plug contains a removable fuse cover you must ensure that it is refitted when the fuse is replac ed If you lose the fuse cover the plug must not be used until a replacement cover is obtained replacement fuse cover can be purchased from your local dealer CAUTION IF THE FITTED MCULDED PLUG IS UN SUITABLE FOR THE SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY 13 AMPERE SOCKET If a new plug is to be fitted please observe the wiring code as shown below If in any doubt please consult a qualified electrician IMPORTANT The wires in this mains lead are coloured in accor dance with the following code Blue Neutral Brown Live As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug pro ceed as follows The wire which is coloured BLUE must be con nected to the terminal in the plug which is marked with the letter N or coloured BLACK The wire which is coloured BROWN must be con nected to the terminal in the plug which is marked
16. schematic diagram may be modified at any time with tho development of new technology Caution IC and LSI are sensitive fo static electricity U Secondary trouble can be prevented by taking care during repalr Cover ihe parts boxes made of plastics aluminum fo l Ground the soldering iron Put a conductive mat on the work table Do not touch the legs of IC or LS with the fingers directly Voltage and signal line The supply part number described alone in the replacement paris list Positive voltage line suc Nogallvo voltage tine Production Part No Supply Part No 2801 RCDHC 297 E RCDHC 237 i Phono signal line Power Source For GC orea Recording output signal iino POWER POWER TRANSFORMERI TRANSFORMER 2 IRCUI CIRC T UIT SU A900MK2 SU A900MK2 Printed Circuit Board Diagram 1 2 3 4 This circuit board diagram may be modified at any time with the development of new technology REPIGI2A M E EG GC GN n MAIN ec a eee wiee SELECTOR 21 s s yes 1073A 3 o0 y OPERATION 8704 1279AU POWER SWITCH F P C B REPIBTOA 8 8 esie 23 SU AS
17. 0 n em 5K 2 K 5 R303 304 ERDS2TJ104 R305 306 ERDSZTJ224T 307 308 ERDS2TJ392T 1 4 3 9 309 310 eRDs2ts223 1 4 2 2 R834 ERDS2TJ221 22 Vs m ou R313 314 FRDSZTJ3O2T ERDSPISQ4 UNO 857 853 ERDS2TJ103 10K R860 862 ERDS2TJ104 ERDS21J223 _ R315 316 ERDS2T3222 2 R625 ERDS2TJ223 lw 2 R626 ERDS2TJ103 10 R628 ERDS2TJ564 1 48 560K ERDS21J473_ MAS ATK 6K R634 ERDS2TJ223 1 4 22K ERDS2TJL03 1 4 10K x 2 R403 404 ERDAS3GE23T 1 4 8 R405 408 ERDLS2VJ102T 1 49 R863 R407 408 ERDAS3GIB4T 1 44 180 803 412 ERDAS3GS62T 1 48 5 6K 3 1 2 8413 414 ERDASSGIOIT 1 49 1 1 1 10 10 A 60 2K 1K 2K R317 318 ERDS2TJ391 1 4W 390 8319 320 ERDS2TJ183T L AN 18K R401 402 ERDLS2VJIO2T IAN K K 00 8K 70 5K 0 K ins ais 410 470 ERDAS3GB22T 02 423 426 ERDAS3G1017 MGE R459 460 ERDAF2VJIOIT 451 454 lA 33K isa in 7 Eng ERDS2TJ222 1 48 2 2K C101 102 0 50V 100 R637 ii 707 708 ERDAFAJGRBT L AW 6 8 A m R711 ERDS2TJ222 8712 ERDAF2VJIROT 1 48 R73 ERDS217223 R714 ERDS2TJ222 4 02 5 50 1000 6 C C 0 109 110 ECKMIHZ22K95 50V 2200P 111 112 ECQBIMI22JF3 50 1200P C113 114 8
18. D2037EFTA Ca UN4111 x Cathode UN4113TA A UN4211 UN4213 415 4120 4160 4 6 165 167 MA29WA 700 1SS291TA 1SR35200TB LNO14305P LNO18305P Anode Cathode 25 Wiring Connection Diagram Dee TRANSFORMER 2 P C B SOLDER WHT 8LU WHT SRN FAN MOTOR T I Power transformer i J POWER SUPPLY P C B REMOTE CONTROL SOLOER SIDE POWER PLAYCINJ PLAY INJ TRANSFORMER 1 P C B NOTES White BLU Blue CN7028 BRN H GRY Gray 2 2 2 2 amy amy amy amy r 1 2 CN201 8 OPERATION P C B Bv AMP P C B 2 8 CPRO2 CN80 802 POWER SWITCH P C B HEADPHONES JACK P C B 26 SU A900MK2 SU AS00MK2 B Block Diagram E Function of IC Terminals IC801 37470 22325 b 200 REMOTE Selector IC IC201 No of right P21 IN1 Input select switch signal input Speaker select switch SPEAKER channel 9 4570 0101 103 4 Terminal VO 10102 1041 UN 9 T Name _ Tro T 5 64 9 E ST Relay Power SW drive signal UPC4570C
19. ESB68113 SW TONE ON DEFEAT EVQ21405R SW TAPE MONITOR EVQ21405R SW INPUT SELECTOR TAPE1 F1 F2 Ni 14 EVQ21405R 9 INPUT SELECTOR RIGHT E101 102 SNEI004 2 GND PLATE Eum EL esi 103 SMC949 SHIELD PLATE E201 RSC0340 SHIELD PLATE FCl 2 EYFS28C FUSE HOLDER 3 4 51398 FUSE HOLDER EVQ21405R 19 SPEAKER EVQ21405R 94 SPEAKER B S801 5802 S803 5804 5806 5807 5808 5810 S811 SU A900MK2 SU A900MK2 Notes Capacity values in microfarads uF unless specified otherwise P Pico farads pF F Farads Resistance values are in ohms unless specified otherwise 1K 1 000 OHM 1M 1 000k 0HM Values amp Remarks Ref No Part No Values amp Remarks K 75 ERDSIFVJ33IT 1 330 88518108 R501 502 EROSZTJSS2T 1 4 3 9K _ 1 8 ms1 752 RS0S S04 ERDAF2VJI2IT 8 120 A 104 ERDS2TJ102 1 4W R505 506 ERDS2TJ3S2T 1 49 3 5 801 802 8805277391 1 39 0m ism s Jm 444 2m x A 22 150 gt c gt R804 ERDS2TJ331 148 3 30 R810 ERDS2TJ102 1 R811 ERDS2TJ103 10K O R813 817 ERDS2TJ103 10K R818
20. IOCK DIaOQram urere Scr noa 27 Front Panel Controls 4 e Function of IC Terminals eene eene enne 28 GonnecliOrns ieri cornes rn ro Dl 5 6 Replacement Parts List nenne 29 35 Listening to Sound eet annees 7 8 e Cabinet Parts Location eene 33 34 Recording heste v dne e he te AE Ure dt 9 Packaging enr irent eei EY n eee ERE 35 Operation Check and Main Component Replacement Procedures 10 13 Before Repair 1 off the power supply Using a 10 10 W resistor connect both ends of power supply capacitors C701 C702 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 60 Hz in NO SIGNAL mode should be shown below with respect to supply voltage 110 V 127 V 220 V 240 V Power supply voltage AC 230 V 110 127 V AC220 240 V Consumed current 50Hz 70 270 mA 60 260 mA 120 500 mA 60 260 mA Protection circuitry The protection circuitry may have operated if either of the following conditions is noticed No sound is heard when the power is switched ON Sound s
21. ITA O REY one KELAY ORNE SUR 95 x A SIGNAL Lch OLFFERERTIAL ciis cus 1 2 2200P 0 01 0 039 Bae Q827 MNISSISTA L251 C301 R30 2SC331IA1RTA 0Vi3 560 ROI RIOS 1 f RI26 RIST IITA C NN Te emm x 8 0815 55 2 My i 2 99 UN421ITA a RESET 8202 00 6 BALANCE k R303 _ 100K C303 tH NS oo NT 58 5 8 i S T og TH20 TH202 5103 0 ol 190K 100K PHONO MM UPC4570C 5 58 ae PHONO GND UNAIIITA RELAY DRIVE lt S o BI go 23 JK201 RIO 8104 amp Lch O PHONO 100g H LOOuH L 815 T a Ren o A ia 8 skoi T E Lch 5 z z 5 L X 9 gt 5 i 2 2V TUNER 6801 9211 rs 2 Ren B zn 22 JK202 gt gt C Leh Cato d E a x ox 32 0825 e e e Oe Peer qua es dra 20 MAIGSTA 803 TCT4HC42 AP LEO DRIVE E ANI I 401 402 Rch 1i p p i 1 3 2 K389BG JK202 5 1 Fr guyz RAT AMP Leh xeo I 111 m 0824 825 AUX 1 O o Jc 2SK30IQRSTA
22. OOMK2 SU A90DMK2 ARR 14 15 16 17 ns TRANSFORMER 2 REPIGI4A P gt EB EG REPIGIGC P jo75an TI Power tronsformer 1075 A 1 18 POWER SUPPLY P C B REPIGI4A P E no REPIGIAC P gt GN 50 60 HES TRANSFORMER 1 P C 8 JACK REPIGI44 P EG REPIGI4C P GN D VOLUM PCB REPIBTOA 5 13 8 REPIB7OA S 204 eor 836 240 8 98 127250 19 bur S 20 SU A900MK2 SU A900MK2 21 22 223 24 25 Power Source For GC area o VOLT ADJ P C B REPIGI4B P BLK P C B REPIGIAB P REP16148 P n WHT REO E 10758D E0 A 5 v WHT GRY 4c iN la755C C l 1 615 POWER i TRANSFORMER 2 z SFORMER 1 0 2 WHT BRH e m E a UPC4570C 8Pin TC74HC42AP 16 NJU7312AL 37470 22325 32Pin BA6218 RSN6000A MN1381STA 2SA933QRSA 2SK389BG 2SJ105GRYTA SVI3205B 2SA992EFPTA 2SK330GRYTA 2SA1123RSTTA 2SB621A R 28C2631RSTTA E 2SD893RTA 411 056 Sb 2SK170BLTPE2 4056 2SA1309AIRTA 2SB941 P 28C331 1AIRTA 2SD1265PQ 2SK3010RS MA4068L UN421FTA 2S
23. Q 0752 754 0752 Q751 753 0751 Regulator 127 1 sewour sosa 7 For GC orec 00000000 27 28 SU A900MK2 Replacement Parts List Notes Important safety notice Components identified by mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list The parenthesized indications in the Remarks columns specify the areas 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 Remote Control Ass y Supply period for three years from termination of production 0824 825 2SK301QRS TRANSISTOR The SF mark denotes the standard part 0826 2SA933QRSTA TRANSISTOR Q827 Ref No Part No Part Name amp Description Remarks 28C3311ATRTA TRANSISTOR eae IMIEGRATED CIRCUIT 5 ETE ee C101 I C PHONO EQ AMP 10201 INPUT SELECTOR 16251 1 VOLUME MOTOR DRIVE C301 1 TONE AMP 6501 1 C POWER AMP 16502 1 C V ANP 1601 I C FAN MOTOR DRIVE 16801 MICRO COMPUTER 10902 1 C RESET 10803 TC74HC42AP I C LED DRIVE p TRANSISTOR S e
24. ck 2 the cassette tape deck or DCC deck which is connected to the TAPE 2 DCC terminals and vice versa 1 ITOH TAPE Z oCC Aux TAPE MONITOR TAPK 1 TAPE SOUACI Before recording prepare the tape deck or DCC for recording recording level adjustment etc See the tape deck s or DCC s operating instructions for details Load tapes which have been advanced to the end of the leader tape into both decks To record from tape deck 2 to 1 Press TAPE MONITOR so that the SOURCE indicator illuminates 3 Begin tape deck 1 for recording and tape deck 2 for playback To record from tape deck 1 to 2 1 Press TAPE MONITOR so that the SOURCE indicator illuminates Begin tape deck 2 for recording and tape deck 1 for playback To directly select the source for recording The desired source can be selected directly by using the input select buttons located inside the panel To check the sound recorded while recording is being made If a cassette tape deck with 3 heads is connected to the TAPE 1 or TAPE 2 DCC terminals it is possible to check the sound recorded onto the tape TAPE MONITOR Press TAPE MONITOR to select the deck tape deck 1 or 2 and set the monitor switch on the tape deck to TAPE TAPE 1 when recording on tape deck 1 TAPE 2 DCC when recording on tape deck 2 Operation Check an
25. d Main Component Replacement Procedures 1 This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components 2 For reassembly after operation checks or replacement reverse the respective procedures Special reassembly procedures are described only when required 3 Select items from the following index when checks or replacement are required 4 Illustrated screws are equivalent to actual size 5 indicates parts No Contents Page 1 Checking for the Volume P C B Operation P C B Tone 11 2 Checking Tor the Main P C B BM 12 power 13 1 Common disassembly procedures Follow this procedure prior to other disassembly Cabinet RKM0089C 1K A Remove the 6 screws 0 0 0 0 RHD30035 K1 Black YD 0 0 XTBS3 8JFZ1 Black u XTWS3 10T e 0 0 6 XTWS3 8T Black XTBS26 8J SU A900MK2 SU A900MK2 2 Checking for the Volume P C B Operation P C B Tone AMP P C B Volume P C B To check the operation of each P C B use item 1 on page 10 Operation Tr To remove each P C B j PUN Remove the knob and nut Remove the 3 screws i in 222 ERED Release the claw and then Front panel
26. discs TUNER Set to this position to listen to radio broad casts PHONO Set to this position to listen to phono discs Then set the phono cartridge selector to the position which corresponds to the type of cartridge used on the turntable duis Turn VOLUME to adjust the volume level MIN MAX After listening is finished Be sure to reduce the volume level and switch the power to the standby condition by pressing POWER SU A900MK2 SU A900MK2 VIRTUAL BATTERS OPERATION Headphones not included Plug type JPHONO SELECTOR 1 20 BOUNCE Q Q o O o 4 TAPE MONITOR TAPEZ DCC AUX 6 3 mm phone plug stereo type To adjust the tone quality TONE Set TONE to the ON position If set to the DEFEAT position tone controls mDEFEAT ON have no effect N Turn BASS to adjust the low fre MIN quency sound 1 TREBLE Turn TREBLE to adjust the high frequency sound MINS MAX To adjust the sound balance BALANCE Turn BALANCE to adjust the left right sound balance When listening phono discs EHONO Select the cartridge type MM Set to this position when using a moving magnet type cartridge or high output moving coil cartridge 1 mV or more MC Set to this position when using a moving coil type cartridge When listening through head phones Use VOLUME to reduce t
27. e control e Included with compact disc player Compact disc not included SU A900MK2 To connect the speakers Right speaker not included Left speaker not included SPEAKERS D Strip off the outer covering and twist the center conductor m gt 10 mm Turn completely to the left 8 Insert the wire and turn completely to the right Pull the cord to assure a proper connection Be sure to only connect positive cords to positive terminals and negative cords to negative terminals To prevent damage to circuitry never short circuit the positive and negative speaker wires terminals For connection to second pair of speakers Bl Speaker impedance When only the A or only the B terminals are used 4 16 ohms eWhen both the A and the B terminals are used simultaneously 8 16 ohms About the cooling fan The cooling fan operates at high power output levels only To connect the AC power supply cord FOR UNITED KINGDOM ONLY BE SURE TO READ THE CAUTION FOR THE AC POWER SUPPLY CORD ON PAGE 3 BEFORE CONNECTING THE AC POWER SUPPLY CORD For areas except United Kingdom Europe Australia and N Z Be sure to set the voltage selector to 110 V 127 V or 220 V 240 V according to the area in which the unit will be used Use a minus screwdriver Voltage select
28. he volume level and connect the headphones If sound from speakers is not wanted press SPEAKERS A and or B to turn off the speaker select indicators Avoid listening for prolonged periods of time to prevent hearing damage Recording To record from compact discs etc It is possible to record from units which are connected to the rear AUX CD TUNER or PHONO terminals to cassette tape decks or DCC decks which are connected to the TAPE 1 or TAPE 2 DCC terminals 1 2 ue NH gem 1 20 SQURCH o co TUNKEA re zn lo 01000 S TAPE1 2 AUX Before recording prepare the tape deck or DCC for recording recording level adjustment etc See the tape deck s or DCC s operating instructions for details Press TAPE MONITOR so that the SOURCE indicator illuminates Select the program source to be record ed AUX To record from equipment connected to the AUX terminals CD To record from compact discs TUNER To record from radio broadcasts PHONO To record from phono discs Begin recording Follow your tape deck s or DCC s operating instruc tions 4 Begin the source to be recorded SU A900MK2 SU A900MK2 Tape to tape recording It is possible to record from tape deck 1 the cassette tape deck which is connected to the TAPE 1 terminals to tape de
29. kers connected to the A ter minals and the B terminals off No sound will be heard from the speakers Both indicators will turn off Press TAPE MONITOR so that the SOURCE dicator illuminates When a graphic equalizer is con nected to the TAPE 1 or TAPE 2 DCC terminals press the button so that the TAPE 1 or TAPE 2 DCC in dicator illuminates SENSOR 2 _ 6 4 moea di 1 Input select indicators To open the E panel cover 8 Ppa 010600605 J 4 Press lt or gt to select the sound source Q Each time the button is pressed the il luminated position of the input select indicator will shift one position to the left Q Each time the button is pressed the gt luminated position of the input select indicator will shift one position to the right To directly select the input source The desired input source can be selected directly by using the input select buttons located inside the panel TAPE 1 Set to this position to listen to equipment con nected to the 1 terminals TAPE 2 DCC Set to this position to listen to equip ment connected to the TAPE 2 DCC terminals AUX Set to this position to listen to equipment con nected to the AUX terminals CD Set to this position to listen to compact
30. omum tO uo pros 2 5 cris 17 18 31 32 3 34 35 Notes 651 Power Standby ON switch S2 Voltage select switch in 220 240 V position For GC area only S103 Phono cartridge select switch PHONO SELECTOR 5204 TONE contro switch ON DEFEAT 6 5801 TAPE MONITOR switch 5802 Input selector switch TAPE 1 6 5803 Input selector switch TAPE 2 DCC i 8 S804 Input selector switch AUX S805 Input selector switch CD 5806 Input selector switch TUNER 5807 Input selector switch PHONO 5808 Input selector switch 4 00 e 5809 Input selector switch gt S810 Speaker select switch SPEAKER S811 Spoaker select switch SPEAKER indicated voltage values ate 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 circult tester No mark Power QN Important safety notice 0202002 Components identified by A mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list e This
31. or VOLT ADJ 110V 127V 220V 240V ACINA Note that this unit will be seriously damaged if this setting is not made correctly AC power supply cord included Household AC outlet Connect this cord after all other cables and cords are connected MED The configuration of the AC power supply cord differs according to area For areas except Australia and N Z Insertion of Connector Even when the connector is perfectly inserted depending on the type of in let us d the front part of the connec tor may jut out as shown in the draw ing However there is no problem using the unit Approx 6mm Appliance inlet Not suppiled for United Kingdom Europe Australia and N Z If the power plug will not fit your socket use the power plug adaptor included gt B Listening to Sound 1 2 TONE ADEFEAT a C OPERA D MAX D anes POWER Press POWER to switch on the power 2 Pide Press A and or B to select the speaker system s to be used A and B refer to the speaker terminals at the rear of the unit The corresponding indicator above will illuminate to indicate which speaker system is selected A Sound can be heard from the speakera connected to the A terminals B Sound can be heard from the speakers connected to the B terminals A and B Sound can be heard simultaneously from the spea
32. te control Headphones jack PHONES 9 Speaker select buttons indicators SPEAKERS Tone controls BASS TREBLE 17 Balance control BALANCE 2 Input select buttons indicators INPUT SELECTOR 3 Phono cartridge selector PHONO SELECTOR SU A900MK2 Connections To connect to each terminal e Make connections to each component in the system by using stereo connection cables not included Stereo connection cable p i A Man sait e c 2 Tuner not included Video disc player not included Tape deck 1 not included Cooling fan 9s Speaker terminals pU e Only for turntable with ground terminal Turntable not included Compact disc player or CD changer Tape deck 2 or Digital compact not included cassette DCC not included This unit A REMOTE CONTROL OUT terminal REMOTE CONTROL Connect the connection cable for the remote control to QUT Technics tape deck and or CD player or CD changer which l has the appropriate remote control terminal as shown at the Connection cable right for remote control If a tape deck is not being used the CD player or CD Included with tape changer can be connected directly dotted line 1 deck Tape deck i not included For a tape deck and or CD player or CD changer with a remote control sensor this connection is not necessary Connection cable for remot
33. tops during a performance The functions of this circuitry is to prevent circuitry damage if for example the positive 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 protection circuitry functions the unit will not operate unless the power is first switched OFF and then ON again For aras except E EB EG GN CAUTION The AC voltage differs according to the area Be sure to set the proper voltage in your area befor use Accessories AC power supply 1 for E EG and GC areas RJAO019 2K for GN area 0036 Remote control transmitter e Batteries Power plug adaptor RAK SU129WH 4 21 2 1 4 2 SJP5213 2 at 1 Note These are available on sales route for GC area only 18 SU A900MK2 Caution for AC Mains Lead For United Kingdom EB area code model only For your safety please read the following text carefully This appliance is supplied with a moulded three pin mains plug for your safety and convenience A 5 ampere fuse is
34. wr ps ona onson po ED mex mea imu m nier 5 zia Bow p Suw ko Bu CEN Weser 44 FRONT PANEL ASS Y hs mera li s ze jar JE gt 35 SU A900MK2 SNNT momcnorcwm P1 862035 PACKING CASE TUE ACCESSORIES ENDE Rar C POWER SUPPLY CORD WARRANTY CARD E EB EG 69 INSTRUCTIONS MANUAL INSTRUCTIONS MANUAL EB GN INSTRUCTIONS MANUAL EG INSTRUCTIONS MANUAL GC SJP5213 2 POWER PLUG ADAPTOR A GC RPHOO32 PROTECTION SHEET EB GN UM 4 AAA RO3 Note These are For EB area Pod OOOO Ass y Printed in Japan F940511500 TW YU TN enm

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