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Summary of Contents for sx-d5000

Page 1: ...4ATIC DIAGRAI i OuartzSYNTHESIZED STEREO RECETVER This servicemanual is applicableto the KU type when repairingthe s G type pleasesee the additionalservice manual p 53 p 621 when repairing the Kc type please seethe addi tional servicemanual ART 5511 and for HG type please seethe additionalservice manual ART 545 CONTENTS 1 SPECIFICATIONS PowerAmplifierSection Continuous power output of 80watts perc...

Page 2: ...atio lmageResponse Ratio l F R e s p o n s e R a t i o AM Suppression Ratio Subcarrier ProductRatio SCA Reiection Ratio l ilutingThreshold AntennaInput 80d8 50dB 35dB 30Hzto 1skHzro 5dB 80dB 6 0 d 8 Ferrite loopstick antenna 300pV m 1 5 g V 3 0 d 8 4 5 d B 3 0 d B ToneControl B A S S T R E B L E L o w F i l t e r 1 8 H z 6 d B o c t l Loudness Contour Volumecontrolsetat 40d8 position 6dB 100H2 3dB...

Page 3: ...e trme Continued to next page O POWERMETER This meterallowsyou to readout the ratedpowerlevel on the fluorescentdisplaytube when speakers with a nominal impedanceof I ohms are connectedto the SPEAKERS terminals Low FTLTER swrrcH Depress this switch in the eventthat turntablerumble recording cutting noiseor otherlow frequency noisebe comesobiectionable Attenuationin the frequencvband below18Hzis6dB...

Page 4: ...ou may not be able to rccord odinary program sources G BALANCECONTROL Usethis control to balance the volumeof the left and right channels lf the soundappears to belouderon the right it meansthat the volumeof the right c rannel is higher Turn the balance control to the left and adiust Conversely if the soundappears to belouderon the left it meansthat the volumeof the left channelis higher Therefore...

Page 5: ... depress the de siredswitch TUNING UP DowN SWITCHES Depress the DOWN switch to tune in a station broad castingon a frequencylower than that indicated on the trequencydisplay and depress the UP switchto tunein a station broadcasting on a frequencywhich is higher thanthat indicated MEMORYSWITCH This is depressed when presetting a broadcasting station into one of the STATION CALL switches For preset ...

Page 6: ... I QausrEREo our i I G SYNTHESTZER C RCU T _ l t l I lC TC9t23p GR PRESCALAR F M t g aM 1 1 A 8 C O T t T 2 T 3 T 4 t SYNTHESIZER CONTROL I tc rc9l24AP qqqqas TIME SHARESWITCHES 4 5 TH OIGIT O SWITCH B 4 ANALOGSWTTCHES J q9 gr Y K K ryNY J 8L L A I C O T 1 T Z T I T 4 F M A M INH Doo SYNTHESIZER CONTROL DoI u L As Kl K2 K3 K4 K5 DoZ 5 POINTSIGNAL INDICATOR ORIVE MEfVIORYSTATIONCALL TUNING 3 3 3 3 ...

Page 7: ...in the AM band o Frequency scanning is achieved by depressing the TUNING UP or TUNING DOWN key continuously o For auto scantuning mode set the tuning mode switch to the AUTO position and press either TUNING UP or TUNING DOWN key once In this mode the frequency band will be scanned automatically coming to a stop when the frequency of a sufficiently strong broadcasting station input level above a sp...

Page 8: ...tio delay characteristics and other para meters shows a marked improvement in com parison to the PA3001 A Multiplex Decoder The recently developed multiplex decoder IC PA4006 A combines MPX decoding with muting functions in a single IC thereby handling the functions of the more conventional MPX IC PA1001 A and AF MUTING Ic PA1002 A Distortion ratings and S N ratio have been fur ther improved by in...

Page 9: ...will be determined according to the program signal be coming N times integer multiple the reference frequency fr TO TUfIING VARI CAP The data program signals used to designate FM AM operation and the programmable counter frequency division ratio consists of BCD code pulse A D time division pulse T1 T4 and load pulse L signals See Fig 4 4 for an outline of the data program signal time chart Numbers...

Page 10: ...n ratio N n 107 during FM reception 50kHz Step Operation Model SX D5000 S G The circuit shown in Fig 4 5 will only change the reception frequency in 100kHz steps unless otherwise modified By altering the frequency division ratio N a 50kHz shift circuit may be activated with every second 100kHz frequency shift resulting in the reception frequency being changedin 50kHz steps The Fig 4 5 circuit form...

Page 11: ... from this reception frequency data by programming the frequency division ratio as N n 460 during AM reception NOTE The SX D5000 has been designed with an AM CHANNEL STEP selector 1OhHz 9hHz Iilhen switched to the ghHz position the reception band becomes SSIhHz l602hH2 the IF signal 459hHz and the programmable counter frequency diuision ratio N n 4 59 990 20 61 4 5 SYNTHESIZER SYSTEM CONTROL CIRCU...

Page 12: ...nd will continue after the key is released If either bandedgeisreached the reception frequency scanning will not stop but proceed in the reversedirection The scanning will stop assoon asthe AS terminal of the IC is switched to high level If there is no muting signal a stop pulse will be applied to the AS terminal to stop the scanning The generation of the stop pulse is described later under sectio...

Page 13: ...detected by this circuit alone the mechanism by which the auto scan tuning mode is stopped only at frequencies which are l hHz or ghHz switchable by AM CHANNEL STEP selector integer multiples does enable accurate tuning FM Tuning Detector When the input level is very weak or when tuning away from a station a DC voltage appears at pin 13 of the FM IF system IC PA3007 A This output signal is switche...

Page 14: ...fre quency on a 5 digit digital display using a fluores cent indicator tube FL tube as a source As noted in Fig 4 13 the FL tube display grids are divided into five independent units Drive is by the dynamic time division method a time cycle is divided into five divisions and each digit pulsates in a recurring sequence The flicker inherent in this method is not detectable by the human eye o Time sh...

Page 15: ...re Fig 4 13 FL Tube5 digitDigitalDisplay synchronized with T1 thru T4 and provide for the display of the time shared reception data selected station frequency data by the 1st through 4th digit of the FL tube The time division pulse Ti5 for the 5th digit is actually synchronized with T4 however at this time the selected station frequency data is blocked out and substitute data is displayed by the 5...

Page 16: ...o a high level and all outputs a a are low level extinguishing the bth digit display during AM reception o 50kHz Step Indication SX D5000 S G only The operation designationdata for FM reception for SX D5000 S G is FME See table g During the FME mode if data B is 1 high level with the transit of T4 50kHz shift operation is performed Thus when data B is at a high level with the transit of Ti5 the 5t...

Page 17: ... generation of a DC voltage BecauseQ1 follows any temperature drift in Q2 temperature drift of the center point voltage is prevented The pre driver stage Q4 Q5 is a Darlington arrangement the load circuit of which employs a constantaunent source Q6 resulting a high volt agegain Memory 3 Memory 4 1 1 2 l 1 0 1 SignalIndicator The SX D5000 signal meter is an FL tube b point display driven by the met...

Page 18: ...eing cut off PRE DRIVER Fig 4 2O NormalPowerStageBiasCircuit This high speed bias servocontrol circuit is out lined in Fig 4 21 When there is no signal applied to the circuit Q1 and Q2 are almost cut off while Q3 and Q4 will be on The voltage across the collector and base of both of these transistors Q3 and Q4 at this time may be disregarded Con sequently with the power stage bias circuit con sist...

Page 19: ...nent failure or accident Muting Operationwhen PowerSupply isTurned On and Off With reference to Fig 4 23 when the power supply is turned on QB remains off due to 82 The time constant of the 82 circuit isvery small If there is no input DC on Q5 and Q6 they will be off and the timing capacitor C1 charges up through R8 and R6 and thus Q4 turns on When Q4 conducts the relay operates and the output mut...

Page 20: ... STEREO AKB O76 Bar antenna AT8 619 Terminal ANTENNA AKA O13 Terminal TAPE ADAPTOR AK8 063 c The marh found on some component parts indicates the importance of the safety factor of the part There fore uthen replacing be sure to use parts of identical designation Bonnet case ANE 311 Sub panel assembly B ANB 924 Knob A AAD 243 Knob A AAD 243 Knob B AAD 253 Knob BALANCE AAB 246 push switch DUPLICATE ...

Page 21: ...embly GWH 141 IFuse 8A AEK 3O4 Bottom View with Bottom PlateRemoved Switch assembly B GWS 260 Tone assembly GWG 151 rc _lIIr w t ll t il r l 1 Ir Tunerassembly GWE 138 F L assembly AWV I5 qualizerassembly AWF O47 SP switch assembly Gws 265 Tone VR assembly GWX 528 Pushswitch POWER ASG 518 Headphones assembly GWX 529 ...

Page 22: ... terminal no 6 and no 4 groundl 5 L2 6 L3 7 106MHz 20dB 106 00MH2 TCI 8 TC2 I TC3 1 0 Repeat steps4 to 9 until the maximum sensitivity 1 1 98MHz 20dB 98 00MH2 T1 Obtain maximum DC voltage reading between terminal no 6 and no 4 ground 1 2 No signal T2 N Obtain a reading of DC OV between terminals no 5O and no 58 1 3 98 OOOMHz 6fr8 98 00MH2 TC7 Obtain a reading of DC OV between terminals no 50 and n...

Page 23: ...1kHz L or R t33 75kHzDEV Pilot 19kHz t7 SkHzDEV VR3 Obtain minimum cross talk between left and right channels at the output TAPE REC terminal FM Multiplex DecoderCircuit o Connect the MPX SG FM multiplex signal generator to the FM SG external terminal o Set the FM SG output to 98 000MH2 and 86dB modulation mode to external and tune the SX D5000 to this position 98 00MH2 FM ANT trimmer FM SIGNAL IN...

Page 24: ...tween terminals no 61 and no ground 2 16O5kHz TC6 Obtain a reading of DC 25V between terminals no 61 and no 60 groundl 3 Repeat steps 1 and2 until both requirements are satisfied 4 600kHz 40dB 600kHz Bar antenna Obtain maximum DC voltage reading between terminal no 6 and 5 l4OOkHz 40dB 1400kHz TC5 no 4 ground 6 Repeatsteps4 and 5 until the maximum sensitivity 7 1000kHz 40dB 1000kHz T4 Obtain maxim...

Page 25: ...vR4 vR6 fully around in the counter clockwise direction but set vR1 and vR2 to the centerpositions without any load or input signal turn the POWERswitch on No 28 No 25 No 20 No 17 Fig 6 3 AdjustmentPointsandMeasuring Points 6 3 POWER FL INDICATOR CALIBRATION 1 Apply a lkHz signal to the POWER AMp IN terminals and adjust the level of this input signal so that the voltage on the output SPEAKERS read...

Page 26: ... be sure d esignation Key No Part No Description the importance of the to useparts of identical 1 ANR 246 2 vBz30P080FMC 3 ANB 920 4 AAD 246 5 4A8 246 6 AAB 245 7 FBT4OPOSOFCR 8 ANE 311 9 10 vBz30P080FMC 11 vrz40P160FMC 12 AEC 485 Side panel Screw 3x81 Front panel assemblY Knob BASS TREBLE Knob BALANCEI Knob VOLUME Screw 4x8 Bonnet case Bottom plate Screw 3x8 Screw 4x161 Foot assemblY 26 ...

Page 27: ...Side frame L Ground terminal 2 P Ground terminal 7 P Power transformer 120V Frame Heatsink block Fuse 1A Description Key No 1 1 A rz 1 3 1 4 1 5 t b 1 7 1 8 1 9 20 Part No Description AEK 3O4 Heat sink held metal Fuse 8A Fuseholder Capacitorholder Frame Center frame Ground frame Tuner assembly Side frame R Angle R g 1 GWE 138 27 ...

Page 28: ...PanelStay 25 I N RearPanel B _ d 48 2A ...

Page 29: ...10x0 5 Angle Switch assembly A Lamp holder Lamp with wires Switch agsembly D Tone assembly Switch assemblyB Counter F L assembly Lamp with wires Ceramiccapacitor 0 01 250V PartsListof RearPanel FrontPanel Key No Part No Description 2 MTZ3OP1OOFZK 3 BBT3OPOSOFZK 4 AEC 327 A 5 ADG 023 A 11 AKP 42 12 AKE 038 13 AK8 061 14 AKB 057 15 AK8 076 6 ABA 176 Screw 3x10x9R 7 WA35F100N080 Washer 8 Terminal GND...

Page 30: ... 1 5 1 6 Screw 3x8 Power amplifier assembly Screw 3x16 Washer3 Transistorholder Transistor Transistor Insulator wafer Screw 3x101 Holder Washer 3 Varistor Holder Power supply assembly Heatsink PartsList of Front Panel Key No Part No Description 1 AN8 950 2 VBZ30P060FMC 3 AAD 243 4 5 ABH 043 6 AEC 564 7 AN8 925 8 AN8 924 L ABH Os8 10 AAD 253 Front panel assembly Screw 3x6 Knob A Spacer Coiledspring...

Page 31: ...3 DIAGRAMS 8 8 1 P C BOARDPATTERNSAND SCHEMATIC P 8 BOARDS CONNECTION DIAGRAM TUNER SECTIONI A SWrTCH r y O GWS 258 B T3 8AR ANT r 1 6 c AM GNO _ 3000 I BAL FM 750 UN8AL D 3 2 TUIGR Assl GW I ...

Page 32: ...6 5 4 I E0UALIZER Assy I I ts L I FF sa rt 1 _ rr_ s rll G LI I I Y 5iirfi 4 5 EQUALIZER Ass y I I POWERSUPPL Y Ass Y 6 ...

Page 33: ...COUNTER FL A3 y AW O 5 Sr trlTCH Assl Bl s a GWS 26O SWITCH Ass Cl GSS 261 I 8 7 ...

Page 34: ...10 11 D S t l lTCH Ass A GWS 259 10 11 12 ...

Page 35: ...AM EXT I O57 2SX S _ J E U F F E R 05 6 Ur20 or 3 73 02 2sc5 03 2 t923 FrcNT ND I rof 1 lf j f ol7 o8 AM AUTO STOP fuFFER 2SXiS QtTtE 2 75 2SC46 ialzy i 9 O519 FL ORIVE I r t2 r r ra i6 _ COLNTER FL A3s y AWV Oi5 ida27 o o_ o o T FL OFvE AArioo I L 1 I I 3 l ...

Page 36: ...4 lsl555 O5O 2Sc2575 O48 lPo m8l SWIICHINO TIMESHAR CONTR AM 5 TH DIGIT ERAS 6 5 4 r a 0 t 5 5 a 07 PAST A F M F A O E T AM LOCK FREQ SEL CTOR I swrTcH I I AsJy c 61 VS 261 t J I l P l l o c I l li l J I l s r c P t I rsr otr L i i eou oe s E A r y a 6 FRoM EoUaLEER EOUALIZER Ass y Ast 6 rn Or 11 j e l ff i Ttl Il 1 i I l l o _ o l l F x 6 r Lql pJ jr ra I I l F l L__ M _ J ffR seerv ...

Page 37: ...M SWITCHAr y Al Gws 259 _ r r r r l l l OUt 3O3 s1555 S6 TIMINO SELECTOR O3lO 313 rst555 o 4 s t 2Sc2575 swricHNc I r sr 06rr coNrRoL I D l _J I l _ _ t tPD4OOi SNAR CONTROL I I I I I l EESTSTO8S I Indicatd in r w 15 tol 6rc u r6 orheRis nord t llt I M M i r l F l r c l 2 K l q r o l e r m e 2 caPAcrrols I ld c rd h Eap try F voh vl unl6 othceie rd p oF I Ind dron wrrhour vonq rr v dc r rftr otync...

Page 38: ...e of Transistors andlCs 2SA1100 2 2575 2SC1919 2SK168 2SA733A 2SC945A Type No 2SC461 2SC535 2SC1923 TC5066BP TC5022BP L81405 HA1138 y PD4O27C pPD4081C pPD4O69C M884016M MB8401 1M pPD401 I PA4006 TCg123P TCg124AP E Lot No T 2SK34 10 Type No HA1201 11 TD61O2P 12 l ...

Page 39: ...ONEVR A fso Vl A EOUALIZER Ass y AWF O47 _r c3 T O 25 ftf B TAPE2 PLAY REC l I L R L R TAPE1 PLAY RtC L R L R ADAPTOR t t N O U T L R L R R210 2 2k 2 3 LEDAss y I l 5 rdl s R L I r c i P i r I I t l 1 i t t h 1 i T r t r l l 26 l SWITCH Ass y D GWS 258 ...

Page 40: ... R LEDAss y I lnai 2s HEADPHONES Ass y GWX 529 5 POWER FL Ass y A POWE E l eroro l 1 i1 r iI r tt lH 1 r l l l l r r r r i 1 Ylf i l11l l f L r l t i t i l l t t l l l ftu t t3 6 Y i l l 4 i L t SP SWITCH Ass y GWS 265 W r h F tzl 1 n T N 1 r oir GWX 53r ...

Page 41: ...POWER IN ts POWER AMPAss y GWH l4l COUNTER FL f r A3s y AWV O 7 ...

Page 42: ...11 10 I E A B POWER SUPtuY Ass y GWR t24 12 swrTcHEo _ 50tY r a TUNERAs y ...

Page 43: ...b SITCX S S 4 l T f E r c N t r c F l O N q E E Si4 2 Ttr MO TOR 2 ON qEE sr4 3 aoAPrcR oN gf Sl5 nf ML CATE I Z ON gEE SE 2 IAPE MLTCATE z D ON OFF St5 3 TFE q JPLTATEIGF on w S F r F U N C T O N p H o r c d r r S 2 FUNCTtOil AUx ON OF F sr6 3 FurclroN aM ol G s6 FUrcTPN Ft q OFF Sl7 LOUONESS ON OF s l 6 M U T r m 2 o d 8 t m c F S t g l S P E A X E m l A l m F r S 2 SPAXERS a Oil gEE 519 3 LOW F...

Page 44: ... Dl GWS 258 I crlg 4 I o o tT I L__i TUNER A y GWE t3e t2 21 vRr rcLUtE 4ArC I I r l t l t l l _ l SP SWITCH Arrrt GWS 265 fi 3 _ PowERSUPPLY E l__g _131_ tr ozd z ao a2os 2sa s c_l 9 2sK3 ozos zsirq trGULAToR 02lO rPcTAilOAa 02 rsr555 Ol TA73i8P Oa3 HAlzOlO MEER AMP CoMPARAU FL MIVE 6 5 4 o20t 2sc2575 QA7 2SA92 ozsr 2scr9r5 oeo 2sa905 6 o G a s _l I ...

Page 45: ... oro toz 2st7 5a ABSORAEF _ l oro3Jg 2SA979 oto6 to6 se24 oroT toa 2sA750 o og ilo 2scr9l5 Qftf 12 2sa7g Qil3 il4 2SC 4OO oil3 fi6 2SA9O5 o r7 t18 2SA75O oil9 r20 2SC 4 d2t l22 esa904a Qr23 r24 2SCr9l4A of25 f26 6CZ27a 0127 128 2SA9A5 Ol29 l32 2SC2575 q33 zsAlloo ot34 2SCl384 oto3 128 POWER AMP I I o o rzs l PoWER FL A Awv Ot7 SP SWlTCti Arc GWS 265 l 3t HEADPHONESi GWX 5A9 l l sP a L SP A ItttE 8...

Page 46: ...al Appearance of Transistors andlCs 2SA979 2SA912 NFE 2SC1384 2SA750 2SC1400 25K34 TA7318P HA12017P ro ffit n fu n A PE e ffi r n ffi 1l s c B 258706 2SD746 258706A 2SD746A 2SA904A 2SC19144 2SA905 2SC1915 2SA986 2 2275 Typc No 2S8834 2SD836A 2SD880 2SD313 2SC177s E pPC73M08H N o Nl ffi fj lF m 2SA1100 2SA7265 2SC2575 11 10 2 2291 12 ...

Page 47: ... 141 GWR t24 AWF o47 GWG 151 GWX 52a GWS 265 GWX 529 GWX 531 T1 Power transformer 120V f2 8ar antenna PLl PL3 L mp with wire PL2 PL4 Lampwith wire PLs Lampwith wire PL6 PL7 F U l FU2_ FUs s20 Fuse 8A Fuse 1A Push swilch POWER Cersmiccapacitor o 01 250v Ceramiccspacitor Resistor 2 2M Transistor TunerAssembly GWE 138 COILSAND FILTERS Pan No Symbol Doscription ACG 017 C2 CKDYX l XM 25 C3 _ C5 AACNO2g...

Page 48: ... C66 Cl12 c127 c75 c73 c31 C36 C37 C39 C45 C51 C71 c86 C90 C92 Ct03 C104 c121 cl28 C133 Cr34 C139 c74 c l 0 1 c 1 1 3 c93 C107 c5 c53 C55 Cs8 C98 Cl06 c 3 c 9 7 C l 1 1 C 1 1 4 C l 1 6 c49 C67 C68 Cl l0 C 37 c59 C60 C89 C109 c72 C81 C108 c124 c95 c46 c32 C120 c6 t c t17 c122 C135 c71 Symbol Doscription Note RESISTORS Part No c92 048 c92 O47 c92 O49 Rot aelarraa l R D 1 4 P MO O OJ VR1 VR3 VRs Semi...

Page 49: ... 1S1555 152473 181405 D 1 D 2 o1 AN R 249 LED Holder CBZ30P80FMC Screw SwitchAssemblyB cWS 260 Pan No fc5022BP A2 TC5066BP 03 2SA1100 2SA733A 04 016 OTHERS Part No Symbol D sciiption ASG 252 51 53 pushswirch AUTO AAVOOT Vl FL indicator tube MANUAL FM25 s FM AM MUTEI VBZ3OPO8OFMC SCrEW cosA 152JsO C201 C202 151555 D201 Diode 1s2473 Equalizer Assembly AWF 047 Switch Assembly c cws 2ol cAPAclroBs Sym...

Page 50: ... then rcurite theport no 05before Symbol Dolc iption CEANLR15I l 50 ccDSL 101J50 ccDsL 151J50 CKDYB471K50 ccDsL 470J50 coMA 332K50 coMA 273J 50 CEANLOlOM50 CEANL1OOM 16 CEANL 47OM6 CEA47OM50L CEA1O1M lOL CEANLR22M50 CEANL4R7M50 CEANLR33M50 Note RESISTORS PartNo c1 c2 c7 ct0 c3 c4 c11 C12 cl7 C r8 C3 t C32 c33 C34 c29 C30 c21 C22 C35 C36 c37 C38 C39 C40 c15 C16 c19 C20 C27 C28 c13 Cl4 c23 C24 c5 c6...

Page 51: ...0126 4127 a128 TA7318P A HA120r0 MZ 250 wz 2501 OTHERS P n No o1 02 03 D I Symbol Doacription A At r 678 AAVO x vazS P080FMc SPSwitchAssembly P rt No Tl Heatertransformor FL indicatortube Screw 3x81 GWS 2651 Syfibol D cription R 1 R 2 R49 R50 53 Push switch SPEAKERS LOW FILTER MODE hfe of 0125 Ol28 shoutdhavethe same vatue 2SC2575 2SC13a4 2SA1100 M2 61 wz o6 tI STV2H 10E2 st80142 1S1555 ts2076 152...

Page 52: ...sbtance udlue into code form and then rcwrite theport no osbefore Symbol D criplion 1O PACKING Kev No Pert No Note RESISTORS PartNo l RDl 2pSF troo J RDl 2PSooo J A not ePu pooo t RSIPotro J RDl 4PMqOOJ SEMICONDUCTORS PartNo R220 R222 R212 R213 A217 R218 R203 R206 R210 R216 R201 F202 R207 R209 R21 t R214 R214 R221 R224 Symbol Dsacription 25Dg80 2SD313 25K34 2SO8364 258834 2585071 25A905 2SC1915 rr...

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