Technics SU-810 User's Manual
Contents
1. 16 DISASSEMBLY INSTRUCTIONS 6 8 REPLACEMENT PARTS LIST 17 18 21 BLOCK DIAGRAME 0 UP bd OCT AC 9 EXPLODED VIEW i etu e V REX FERE REC ados 19 20 BEFORE REPAIR 1 Turn off the power supply Using a 100 5 W resistor connect both ends of power supply capacitors C705 C706 6800 uF 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 Hz 60 Hz in NO SIGNAL mode should be shown below with respect to supply voltage 220 V 240 V Power supply voltage AC 220 V AC 240 V Consumed current 50 Hz 60 240 mA 55 220 mA Consumed current 60 Hz 56 227 mA 52 208 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 stops during a performance The function 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 fun2. terminals AUX terminals Connect a tuner Connect a component such as a video disc player audio only con nectable etc Tuner not included Video disc player not included OUTPUT LINE OUT p Q pq E m 2 ADAPT terminals Connect a second tape deck or a graphic equalizer Tape deck 2 not included LINE IN LINE OUT 1 DAT terminals Connect a first tape deck or a digital audio tape deck DAT qr TAPE 3 RECOUT PLAYBACK Tape deck 1 not included To connect the AC power supply cord 2 2 Connect the power supply included after all other cables and cords are connected Note Configuration of AC power supply cord differs according to area AC power supply cord included mc Household AC outlet Pe 9 9a Oe For United Kingdom Household AC outlet Fit a suitable plug to an AC power supply cord One pair of speaker systems can be connected to the A terminals of this unit and one pair to the terminals Load impedance e When only the A or only the B terminals are used 4 16 ohms e When both the and the terminals are used simul taneously 8 16 ohms To connect main A and or second B speaker systems Main A speaker systems not included right left 5 Second B speake
3. r gt gt y ai 57 gt QO J CD gt A co gt lt eic D I c co C518 ECEATHKN2R2B ECKRIHA73ZF5 02 5 ECEALCUAT0B ECESLHV682UM ECKR2H1032U ECKR1H4737F5 ECQMIH473KV3 ECEA1EPX470B 580 purum ERDS1FVJ120T ERDS2TJ680T R751 ERG2ANJP152S ERG2ANJP102S Locos d ROME co ow Aa c gt ca Cc gt ata C J c c r gt r gt y C21 gt CD FF J lt gt 18 SU 810 SU 810 EXPLODED VIEW 23 CA for EB only 24 e JK50I Me MS e P E SF SN A 27 mm 59 Atm B N N 1 7 7 1 x 20 19 Ref No Ref No Part No Part Name amp Description Remarks Part No Part Name amp Description Remarks CABINET PART
4. 655 PHONO EQ UPC4570C 101 MONITOR INPUT SELECTOR SIO3 2 SIO3 I TONE AMP prono TAPEI DAT TAPE2 ADAPT 17 166 TUNER source m VR20I 1 VOLUME 2 on CD _ IF i AUX VR202 de teat 5103 3 BALANCE treble LOUDNESS R ch RES OUT 5301 bass ENEE TONE CONTROL m Q REC OUT 9 ven BR oC Rch SVI32O3 S A HEADPHONES IC501 POWER AMP NF is 501 gt TOS 12 O Lo Less e oro IST A 13 7 t o 501 2 i Short 2 SPEAKERS det I RL50OI B on 21 B 8 On d xl indicates pin NO of right canne 1 D602 POWER IND Py 51 48 ie re iuc 4 FI POWER To 1 501 701 704 16 6V GB AC IN For EGJ area 42 4V CB To 1C501 10 E SELECT TONE AMP CIRCUIT VOLUME CIRCUIT circuit yTAVOLUME H 5 VR201 2 VR20I I A I00K B 100 KIB C307 T dex 50V4 7 3 t BE 3 o OW LTD LER n MS mS N 1 m pee Vv ec gomme M e bee E i 1 3 E TREBLE 1 1 1 E R309 VR301 1 4 i H 4 22K 100KIC U E M 2 E 1 TEM iO Id i R315 wopr 48 55 xd i 3 F 3 9K i oo a ME T INPU
5. Frequency response PHONO RIAA standard curve 1 dB 30 Hz 15 kHz TUNER CD AUX TARE 1 DAT TAPE 2 ADAPT 3 Hz 80 kHz 3 dB 0 dB 0 3 dB 20 Hz 20 kHz Area Tone controls BASS 50 Hz 10 dB 10 dB TREBLE 20 kHz 10 dB 10 dB Loudness control volume at 30 dB 50 Hz 9 dB Output voltage f 1 DAT 2 ADAPT REC OUT 150 mV Channel balance AUX 250 Hz 6 300 Hz 1dB Channel separation AUX 1 kHz 50 dB GENERAL Power consumption 380 W Power supply For Great Britain AC 50 Hz 60 Hz 240 V For Continental Europe F R Germany amp Italy Dimensions W x H x D AC 50 Hz 60 Hz 220 V 430 x 125 x 320 mm 16 15 16 4 15 16 x 12 5 8 Weight 6 8 kg 15 Ib 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 Matsushita Electric Industrial Co Ltd Central P O Box 288 Osaka 530 91 Japan CONTENTS Page Page BEFORE REPAIR dur od REESE iR 2 SCHEMATIC DIAGRAM 10 12 PROTECTION CIRCUITRY muti LE UE DEN UN 2 PHINTED CIRCUIT BOARDS AND ACOPSSOPUY 2 WIRING CONNECTION DIAGRAM 13 15 LOCATION OF CONTROLS 3 TERMINAL GUIDE OF IC S CONNECTIONS drei apio Cea qa ete d qe 4 5 TRANSISTORS AND DIODES
6. Stereo Integrated Amplifier SPECIFICATIONS DIN 45 500 20 Hz 20 kHz continuous power output both channels driven 2 x 40 W 8 Q 1 kHz continuous power output both channels driven THD 1 2 x 50 W 8 Q 2 x 75 W 4 Q 63 Hz 12 5 kHz continuous power output both channels driven 0 7 2 X 45 W 8 Q 2 x 65 W 4 Q Total harmonic distortion rated power at 20 Hz 20 kHz 0 02 8 rated power at 1 kHz 0 007 8 half power at 20 Hz 20 kHz 0 0276 8 half power at 1 kHz 0 007 8 Intermodulation distortion rated power at 50 Hz 7 kHz 4 1 SMPTE 8 O 0 02 Residual hum and noise 1 mV Damping factor 60 8 30 4 Headphones output level and impedance 450 mV 330 Q Load impedance AorB 40 160 8 0 16 Q Input sensitivity and impedance PHONO 2 5 mV 47 TUNER CD AUX TAPE 1 DAT TAPE 2 ADAPT 150 mV 22 Phono maximum input voltage IHF 66 1 kHz RMS 150 mV SIN rated power 4 PHONO 76 dB IHF 66 79 dB TUNER CD AUX TAPE 1 DAT TAPE 2 ADAPT 91 dB IHF 66 99 dB 26 dB power 4 Q PHONO 68 dB TUNER CD AUX TAPE 1 DAT TAPE 2 ADAPT 70 dB 50 mW power 4 PHONO 64 dB TUNER CD AUX TAPE 1 DAT TAPE 2 ADAPT 64 dB Technics Service Man ORDER NO AD8911327C2 Amplifier U 810 Color Silver Type Black Type Country Color E Continental Continental Europe Continental Europe Germany Italy 5
7. E E5 EG POWER TRANSFORMER A EB x NNI c ws C In 2 207 FUSE 250V T2A ld gt Notes Capacity valuse are in microfarads uF unless specified otherwise P Pico farads pF F Farads F Resistance values are in ohms unless specified otherwise 1K 1 000 OHM 1M 1 000k OHM Part No Values amp Remarks Part No Values amp Remarks RESISTORS CAPACITORS ECKWNS1032VS 500V 0 01U A 101 102 EROSZIJIO2T 1 4W 1K R105 106 ERDS2TJ224T 1 4W 220K 20 50V 12 C103 104 81 50V 180P neum 2 uaa usus Ua Ense 509 510 ECBTIHISIKBS 50 150 511 512 ECKRIH4732F5 50V 0 0470 C513 ECEA1CU101B 16V 1000 0514 ECEALHU330D 50 330 50V 100 ca c h M o lt mA m co gt 270 131 132 ERDS2TJ102T ERDAS36561T ERDS2TJ823T ERDS2TJ474T ERDS2TJ392T ERDS2TJ223T ERDS2TJ102T ERDS2TJ4721 ERDAS3G392T ERDAS3G223T ERDS2TJ333T 1 4W 33 ERDS2TJ392T ERDS2TJ563T ERDS2TJ222T 149 2 2K ERDS2TJ563T 2 eic ao C2 gt gt lt gt coc bo c2 c c gt 55 c co 24 lt gt C CD CD
8. JKI03 i L PLAYBACK C502 8502 r OUT O 59 2 3 9K TAPE Ba N JKI04 1 RIIO C124 RI26 RI28 CEDAR S 390 50 3 3 180K 12K I E woo 271 2 2 ROME 58 eua em D701 704 u P300DLF r PHONO O lt a ra A x x A 0704 wil L TUNER se SSF DEN I 2 58 1ac36V CD 92 I 102 2 E A b lt g i w Orrego _ 2 o 2 AUX ves t 225 aE c e C 1 1 gt rg 48 l at on 3 REC OUT eM k Sa 5 ce F TAPE 2 ADAPT NS 4 2 Se IR ai AReo L PLAYBACK Ou a s St 5 ISR35200T8 1 2 12 e Oe lt SEI REC OUT yu DAT Ng BET ngo JKI042 424V ar ER SU 810 SU 810 6 8 _ 9 10 11 12 _ 13 14 SCHEMATIC DIAGRAM UIT ED cincuir Parts liston page 17 18 This schematic diagram may be modified at any time with the development of new technology D602 W601 LNOIB84 72PH O 2 ur ES SUPE E e 2 Power ind TREBLE E j R309 VR30I 1 4 C301 R301 Notes eS1 Power switch in position eS101 Input selector switch in phono position eS103 1 Tape monitor select switch in source off positio
9. REC OUT PLAYBACK RECOUT PLAYBACK IN JN A OR B 4 160 SPEAKER A 7 o 1 skoz F l 9x03 7 C JKio4 7 tihi HHH AAND P SSS EACH SEEAPER V TUS MAIN l L D PHONO INPUT 2 TUNER 2 SELECTOR 5101 10 11 12 13 _14 15 16_ 17 50 60Hz 18 ES SPEAKERS SWITCH PC B IN PC B 9 AND DIODES erii 240V EB VOD 4 9 AN6558F UPC4570C MA4082MTA EAT Cathode 45501 1 5501 2 F POWER SWITCH A B LED WHT RED WHT ORG Power Ind SELECT TONE 105301 TAPE2 ADAPT TAPEI DAT LOUDNESS TONE CONTROL BALANCE TREBLE MONITOR TONE CONTROL 15 SVI3203 MA4160MTA E Cathode A 2SA992E P300DLF Ca Ps Cathode A Anode TERMINAL GUIDE IC S TRANSISTORS 165 1SR35200TB Ca Cathode LN018472PH AoC 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 parenthesized indications in the Remarks columns specify the areas Refer to the first page for area Parts without these indications can be used for all areas K mar
10. adjust the left right volume balance Tone controls bass treble The bass control is used to adjust the low frequency sound range and the treble control is used to adjust the high fre quency sound range 9 Speaker selectors speakers These selectors are used to turn the speaker systems on and off Headphones jack phones PLAYBACK REC OUT TAPE2 ADAPT REC OUT PLAYBACK PHONO CD TUNER AUX AC INLET DO S p SPEAKERS 1 el O MAIN A SPEAKER o 9 o 27000 OF GND Phono input capacitance is about 270 pF CONNECTIONS System configurations ___ Turntable not included Tape deck 2 not included Sar LL eve Compact disc player Video disc player not included not included 3 7 a m a gum Main A speaker systems Second B speaker systems included included Make connections each component the system by using stereo connection cables not included PHONO terminals CD terminals M Connect a turntable Connect a compact disc player Turntable not included Compact disc player not included LINE OUT p Ground wire not included
11. safety notice HEADPHONES SPEAKERS Components identified byA mark have special characteristics SWITCH CIRCUIT important for safety When replacing any of these components use only manufacturer s specified parts Caution and LS 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 D X O 104 CNI05 10900000 96000000 501 SVI 3203 k d POWER c mf ng 21 992 DRIVE JK502 HEADPHONES C502 R502 50V3 3 3 9K RL50I D701 T04 eae E MES A 0704 MA4 6 si POWER C705 C506 R506 50V6800 50V6800 16 22 2 2K R752 2WIK AF T2A 250V R602 68 soiree M lt r t BS lt 4 OQ M On 0601 esl 25 1593520078 2WI2 221 eos N rT 95 424V 220V E E5 EG For EG areo CONT m 50 60Hz d IN CIRCUIT mds Ljan 1 2 3 4 5 6 7 8 9 _ 10 PRINTED CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM Panta page TUNER co aux TAPE 2 ADAPT 1 DAT HEADPHONES SPEAKI
12. S RFKGU810E K FRONT PANEL ASS Y RFKGU810E S FRONT PANEL ASS Y PACKING MATERIALS 5 1 RPG0369 1 2 3 CARTON BOX CORD FRONT REAR PROTECTION COVER SPS5185 RGK0098 K ORNAMENT LEFT SP55255 00098 5 55256 1 Hill 1 ca rr 22 r KSU810E K c c E INSTRUCTIONS MANUAL 5 5 em 5 E E5 5 RGQ0006 1S POWER BUTTON T0302 G INSTRUCTIONS MANUAL EB RMRO136 K HOLDER 1 T0304 D INSTRUCTIONS MANUAL EG RMRO136 S HOLDER 2 SFDACOSEO3 POWER CORD A E E5 EG RFKNU810E S INDICATOR ASS Y RGUO118 S PUSH BUTTON SP SELECT RGUO120 K PUSH BUTTON TAPE LOUD TONE K RGUO120 S PUSH BUTTON TAPE LOUD TONE S RGWOO25A K VOLUME K RGWO025A S KNOB VOLUME RGW0028 K KNOB TONE AC POWER CORD WARRANTY CARD RQCD0169 SERVICENTOR LIST EB Hm 0 c M t pe 1 1 2 2 c 3 4 4 LIE c1 5 Bo lt gt r1 7 e E gt 8 8 9 0 1 2 2 m c c SJS9231A AC INLET COVER RMQ0069 COVER SNE2129 1 SCREW SCREW SCREW SCREW SCREW SCREW 23 XTBS3 8JFZ1 n menm O NH n meu E Bo co Printed i
13. T SELECTOR R313 C39 C3I7 L PHON6 sso 9001 4TK 27000 IK 008 j 2 TUNER 4 IC 301 ES TONE Wefega on m 1 3 CD 3 AAV ii UPC4570C CONTROL T UO p 3 S TONE AMP RE BASS F Nee do n 3 3 9K U f JK50 B do ee een 1 ox VR301 2 F d g M oN 83 0 22K 1 tOOKIC L m xs E Lok a bod E j t 22 MEE b TEMP J T P SE o2 A Oy E I A source topell acu tapez loff gt on s 92 go mel L i Bao 09 7 Sao j e LL eq c teca m pul vR302 2 f R314 C320 IOOK C C318 m E 1 B 5103 2 5103 1 5103 3 R212 56k C302 R302 sane 4 7K 2700P 0 018 E au TAPE DAT LOUDNESS 1 50V3 3 560 l6vio H a x m x CH Se ON C308 50V47 Sep E 1 A H O e Ri o B g Ss CIRCUIT 000000000000090 0m 0000 000 kd C501 GND Z ii Rios 025 ib jc mf ng k d n ane PHONO T IU 2 SST 2 0909 oss e s L 0501 25 992 RII7 CLOT 270 63V33 D d RELAY DRIVE N CD ok ov I JKI02 I a 13V L ICIOI m AN6558F asec PHONO EQ AMP REC OUT TAPE 2 ADAPT
14. aw 3 Release the 1 claw Removal of the operation P C B eUse a wrench of the A 11mm A Procedure 1 Pull out the 4 knobs dimensions shownin B 16mm P 122567 2 Remove the 4 nuts O the illustration above longer than to remove nuts 22 mm 3 Remove the 4 screws D Operation P C B Checking of the main P C B Procedure 1 8 Remove the 3 screws 5 Remove the bottom chassis in the direction of the arrow A 4 Remove the front panel 6 Reinstall the front panel to the main P C B TEC Rm Removal of the power IC i dd Removal of the power transformer Procedure Procedure 1 gt 8 gt 9 1 10 1 Unsolder the power IC p gt Power Transformer 2 Remove the 2 screws eWhen mounting the power IC apply silicon thermal compound 5220115 or equivalent to the rear of the power IC Removal of the AC IN P C B Procedure eRelease the 2 claws 1 11 ATTENTION SERVICER Some chassis components may have sharp edges Be careful when disassembling and servicing e Replacement of the Foot Heat Melted Posts 1 Remove the 4 heat melted posts on the chassis with a pair of Ss diagonal pliers or similar tool BINE cm 2 To mount the foot 0009 1 on the chassis melt the 4 posts Foot with a soldering iron Chassis Soldering Iron Foot RKAOOO09 1 m BLOCK DIAGRAM
15. ctions the unit will not operate unless the power is first switched OFF and then ON again ACCESSORY e AC power supply 1 Configuration of AC power supply cord differs according to area SJA193 1 5 m For EB area only SFDACOSEOS 1 5 m For others LOCATION OF CONTROLS eFront Panel ius 1 Power switch indicator power 2 Volume control volume 3 Input selector input selector This selector is used to select the sound source to be heard such as a disc radio broadcast etc 4 Tape monitor selectors tape monitor The left selector is used to playback or monitor the sound from a tape deck 1 or DAT or to record from tape deck 1 or DAT to 2 The right selector is used to playback or monitor the sound from a tape deck 2 or to listen to the sound processed by a graphic equalizer 5 Loudness switch loudness This switch is used when listening to music at a low volume level Auditory perception of sound in the low frequency range falls off at low volume but when the switch is set to the on position this deficiency is compensated for so that the full im pact of the musical performance can be enjoyed eRear Panel 6 Tone control switch tone control This switch is used to turn the tone control circuit bass tre ble on or off Balance control balance This control is used to
16. k parts are used for black type only S mark parts are used for silver type only Parts other than K and S marked are used for all color types INTEGRATED CIRCUIT S ee snes ESB8249V SW POWEROR LOUDNESS S101 RSR4B003 SW INPUT SELECTOR 103 ESB68115 94 MONITOR LOUDNESS O 2000 S301 FSB68107 SW TONE CONTROL IC101 10301 10501 AN6558F UPC4570C SV13203 IC PHONO EQ AMP IC TONE AMP IC POWER AMP S1 TRANSISTOR S S501 RSP2002 SW SPEAKER SELECTOR wawa SJS9231 1B INLET L r L O x r TM 501 2SA992E TRANSISTOR DIODE S 0501 0553 D601 D602 D701 704 D751 D792 793 165 MA4160MIA 1SR35200TB LN018472PH L E D P300DLF MA4160MTA MA4082MTA DIODE DIODE DIODE DIODE VARIABLE RESISTOR S CP103 104 SJT30847WL CONNECTOR 8P CP105 57307470 CONNECTOR 7P CP201 5773074790 CONNECTOR 7P P401 577307479 CONNECTOR 7P FUSE HOLDER SJT390 FUSE HOLDER A VR201 9 R VOLUME CONTROL VR202 EWHFDA014G15 V R BALANCE CONTROL VR301 2 000615 V TREBLE CONTROL VR302 EWC2XA000C15 V BASS CONTROL THERMISTOR S 2 201 202 ERTD2ZHL104T THERMISTOR RELAY RL501 SSY126 RELAY COIL S 1 SLQZ650MH49 SLQY07G 30 COIL COIL A EG TRANSFORMER S 1 1 RTP1NSE004 V RTP1N5B003 V POWER TRANSFORMER A
17. n tape 2 on source off 5103 2 Tape monitor select switch in source position IK tape 1 DAT source oe 95103 3 Loudness switch in position HORUM eS301 Tone control switch in defeat position p 2 501 eS501 1 Speaker A switch on position 22K ICOK C 8201 201 R313 4 TK 2700 d wg 1 T P R317 25K 31 01 Z C313 0 082 a R319 33K e oi R307 3 9K 4 301 1 TONE Idefeet lt on I iC 30 UPC4570C TONE AMP DOREM a ya h sua swan m naa EK sacr DOE i eS501 2 Speaker B switch in position E vc d Positive voltage lines E Negative voltage lines 3 Phono Signal Lch Recording Signal ox m R3IO 22K L1 C308 50V47 H Ly VR202 100K fG BALANCE C316 01 C314 08 R320 33K i Rata C320 1 49022 aja 4 7K 2700P 0 0 R308 3 9K C302 50v33 a Li R302 560 R3i2 SPEAKERS C304 100P R304 82K B IN indicated voltage values are the standard values for the unit Rch measured by the DC electronic circuit tester high impedance with ar zd the chassis taken as standard Therefore there may exist some 1 errors in the voltage values depending on the internal impedance of the DC circuit tester Important
18. n Japan _21 F891109100 TW YY
19. r systems not included right left To connect cords to terminals CD Strip off the outer cover 1 ing and twist the center conductor 10 mm 13 32 2 Turn 5 or 6 times 3 Insert the wire and tighten screw completely Pull the wire to assure a proper connection 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 terminals E DISASSEMBLY INSTRUCTIONS NN Removal of the cabinet Eu Removal of the front panel Procedure Procedure 1 12 Cabinet 1 Remove the 3 screws Q 9 eRemove the 6 screws Q Q 2 Remove the front panel in the direction of the arrow 8 Removal of the power switch P C B iui aie Removal of the LED P C B Procedure Procedure 1523 1524 Power Switch Button amp Power Switch P C B 1 Remove the power switch button by pushing it from behind the front panel 2 Remove the 2 screws 1 Remove the 1 screw Q9 3 Release the 1 claw 2 Release the 2 claws Removal of the headphones speaker Ref No Removal of the volume P C B switch P C B 6 Procedure Procedure olime Kaob 152535 1 2 6 Headphones Speaker Switch P C B 1 Pull out the volume knob 1 Remove the 2 screws 2 Remove the nut 2 Release the 1 cl
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