Sony-STRDE375-rec-sm 维修电路原理图.pdf

STR-DE375Canadian ModelAEP ModelUK ModelE ModelSERVICE MANUALFM STEREO FM-AM RECEIVERSony CorporationAudio Entertainment GroupGeneral Engineering Dept.9-873-861-112001D1600-1 2001.4 Continued on next page SPECIFICATIONSVer 1.0 2001. 04Manufactured under license from Dolby Laboratories LicensingCorporation.“DOLBY” the double-D symbol ; “AC-3” and “Pro Logic” aretrademarks of Dolby Laboratories Licensing Corporation.Amplifier sectionRated PowerOutput at StereoModeReference PowerOutputFrequencyresponseInputsTuning rangeAntenna terminalsIntermediatefrequencySensitivityUsable sensitivityS/NHarmonicdistortion at1 kHzTuner sectionFM stereo, FM/AM superheterodyne tunerFM tuner section87.5 - 108.0 MHz75 ohms, unbalanced10.7 MHzMono: 18.3 dBf, 4.5 VStereo: 38.3 dBf, 45 V11.2 dBf, 1 V (IHF)Mono: 76 dBStereo: 70 dBMono: 0.3 %Stereo: 0.5 %OutputsMutingTONEMD/TAPE OUT:Voltage: 150 mV,Impedance: 10 kilohmsVIDEO AUDIO OUT:Voltage: 150 mV,Impedance: 10 kilohmsSUB WOOFER:Voltage: 2 VImpedance: 1 kilohmsPHONES: Accepts lowand high impedanceheadphonesFull mute6 dB at 100 Hz and10 kHzCD,DVD/MULTI CH,MD/TAPE,TV/SAT,VIDEOSensitivity150 mVImpedance50kilohmsS/N85 dB+0.52Canadian model:(8 ohms 40 Hz - 20 kHz,less than 0.09% totalharmonic distortion)80 W + 80 WMalaysia, Singapore model(8 ohms at 1 kHz, THD0.7%)80 W + 80 WOther countries:(8 ohms at 1 kHz, THD0.7%)50 W + 50 WCanadian model:(8 ohms at 1 kHz, THD0.7%)Front: 80 W/chCenter: 80 WSurround: 80 W/chMalaysia, Singapore model(8 ohm at 1 kHz, THD 10%)Front: 90 W/chCenter: 90 WSurround: 80 W/chOther countries:(8 ohms at 1 kHz, THD10%)Front: 50 W/chCenter: 50 WSurround: 50 W/chTV/SAT, CD, MD/TAPE,VIDEO, DVD/MULTICH: 10 Hz - 50 kHz dBRadioFans.CN 收音机爱 好者资料库2STR-DE375MODEL IDENTIFICATION BACK PANEL Parts No.MODELPARTS No.AEP model4-232-119-0sUK model4-232-119-1sMalaysia,Singapore model4-232-119-3sE model4-232-119-4sCanadian model4-232-119-5sArgentina model4-232-119-7sSystemPowerrequirementsPowerconsumptionDimensionsMass (Approx.)SuppliedaccessoriesTuner section: PLLquartz-locked digitalsynthesizer systemPreamplifier section:Low-noise NF typeequalizerPower amplifier section:Pure-complementarySEPPCanadian model:120 V AC, 60 HzMalaysia, Singapore model220-230 V AC,50/60 HzOther countries:120/220/240 V AC,50/60 HzCanadian model:240 VAStandby mode: 0.5 WMalaysia, Singapore model175 WStandby mode: 0.5 WOther countries:160 WStandby mode: 0.5 W430 x 145 x 298 mmMalaysia, Singapore model5.5 kgCanadian and othercountries:6 kg (13 lb 4 oz)GeneralThe specification measuredis under 230 AC 50 Hz condition(Malaysia, Singapore model)Design and specifications aresubject to change without notice. FM wire antenna (1) AM loop antenna (1) Remote commander (remote) (1) Size AA (R6) batteries (2)* You can change the AM tuning intervalbetween 9 kHz and 10 kHz. Turn off thereceiver and press ?/1 (power) for morethan 4 seconds until “INITIAL” appears.1) After tuning in any AM station, turnoff the receiver.2) Hold down PRESET TUNING +button and press the ?/1 (power)button. “9k STEP” appears.To change to 10k Step, repeat step 1 and 2until “10k STEP” appears. Note that allpreset stations, index names and soundfield are cleared after you make theprocedure above.SeparationFrequencyresponseSelectivity+0.52AM tuner section45 dB at 1 kHz30 Hz - 15 kHz dB60 dB at 400 kHzTuning rangeAntennaIntermediatefrequencyUsable sensitivityS/NHarmonicdistortionSelectivityMalaysia, Singapore model531 - 1602 kHz (9 kHzstep)Canadian model:530 - 1710 kHz (10 kHzstep)*531 - 1710 kHz (9 kHzstep)*Other countries models:530 - 1610 kHz (10 kHzstep)*531 - 1602 kHz (9 kHzstep)*Loop antenna450 kHz50 dB/m (at 999 kHz)54 dB (at 50 mV/m)0.5 % (50 mV/m, 400 Hz)At 9 kHz: 35 dBAt 10 kHz: 40 dBRadioFans.CN 收音机爱 好者资料库3STR-DE375SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITHMARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTSLIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERSAPPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTSPUBLISHED BY SONY. After correcting the original service problem, perform thefollowing safety checks before releasing the set to the customer:Check the antenna terminals, metal trim, “metallized” knobs, screws,and all other exposed metal parts for AC leakage. Check leakage asdescribed below.LEAKAGE The AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not exceed 0.5 mA (500 microamperes).Leakage current can be measured by any one of three methods.1.A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the manufacturers instructions to use theseinstruments.2.A battery-operated AC milliammeter. The Data Precision 245digital multimeter is suitable for this job.3.Measuring the voltage drop across a resistor by means of aVOM or battery-operated AC voltmeter. The “limit” indicationis 0.75 V, so analog meters must have an accurate low-voltagescale. The Simpson 250 and Sanwa SH-63Trd are examples ofa passive VOM that is suitable. Nearly all battery operateddigital multimeters that have a 2V AC range are suitable. (SeeFig. A)SAFETY CHECK-OUTTo Exposed Metal Parts on Set0.15 F1.5 kACVoltmeter(0.75 V)Earth GroundFig. A. Using an AC voltmeter to check AC leakage.ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONTCRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PISES SONYDONT LES NUMROS SONT DONNS DANS CE MANUEL OUDANS LES SUPPMENTS PUBLIS PAR SONY.TABLE OF CONTENTS1. GENERAL 42. TEST MODE 63. DIAGRAMS3-1.Circuit Boards Location 73-2.Block Diagram 93-3.Printed Wiring Board Main Section 103-4.Schematic Diagram Main Section (1/3) 113-5.Schematic Diagram Main Section (2/3) 123-6.Schematic Diagram Main Section (3/3) 133-7.Printed Wiring Board Panel Section143-8.Schematic Diagram Panel Section 153-9.Printed Wiring Board Power Section 163-10. Schematic Diagram Power Section 173-11. IC Block Diagrams183-12. IC Pin Function Description 184. EXPLODED VIEWS4-1.Front Panel Section 204-2.Chassis Section 215. ELECTRICAL PARTS LIST224STR-DE375SECTION 1GENERALFront Panel12345qsqaqfqdq;7869qgqhqj1 ?/1(POWER) button2 DISPLAY button3 DIMMER button4 PHONES jack5 PRESET/PTY SELECT + , buttonsTUNING + , buttonsMEMORY buttonSHIFT buttonPTY buttonFM MODE buttonFM/AM button6 SET UP button and indicator7 NAME button and indicator8 LEVEL button and indicator9 SUR button and indicatorq; VIDEO buttonTV/SAT buttonDVD/MULTI CH buttonMD/TAPE buttonCD buttonTUNER buttonqa MENU buttonsqs MENU + , buttonsqd ENTER buttonqf SOUND FIELD ON/OFF(and indicator),MODE + , buttonsqg TREBLE + , buttonsBASS + , buttonsqh MUTING buttonqj MASTER VOLUME control5STR-DE375This section is extractedfrom instruction manual.qsqa3 4 5 6 79q;1281 ANTENNA (AM/FM)2 DVD/MULTI CH3 CD4 MD/TAPE5 TV/SAT6 VIDEO7 SUB WOOFER8 SPEAKERS SURROUND9 SPEAKERS CENTERq; SPEAKERS FRONTqa VOLTAGE SELECTOR(except Singapore, Malaysia andCanada models)qs AC power cordRear Panel6STR-DE375SECTION 2TEST MODEFACTORY SET MODE* All preset contents are reset to the default setting.* Procedure:While depressing the VIDEO and the CD buttons simultaneously,press the power ?/1 button to turn on the main power. Themessage “FACTORY” appears and the present contents are resetto the default values.ALL CLEAR MODE* All preset contents are cleared when this mode is activated. Usethis mode before returning the product to clients upon completionof repair.* Procedure:While depressing the TUNER and the MD/TAPE buttonssimultaneously, press the power ?/1 button to turn on the mainpower. The message “INITIAL” appears and initialization isperformed.FLUORESCENT INDICATOR TUBE TEST MODE* All fluorescent segments are tested. When this test is activated,all segments turn on at the same time, then each segment turns onone after another.* Procedure:While depressing the TV/SAT and the CD buttons simultaneously,press the power ?/1 button to turn on the main power.1.All segments turn on.SET UP, SOUND FIELD LED turn on.2.Press the VIDEO button, confirm displaySET UP, NAME LED turn on.3.Press the VIDEO button, confirm displaySOUND CONTROL LEVEL, SOUND CONTROL SUR andSOUND FIELD LED turn on.4.Press the VIDEO button, All segments turn off.5.Every pressing of the VIDEO button turns on each segmentone after another in the following order.(Not only the VIDEO button, but also the other buttons such as TV/SAT , MD/TAPE , CD , TUNER can be used.)AM CHANNEL STEP 9 kHz/10 kHzSELECTION MODE* Either the 9 kHz step or 10 kHz step can be selected for the AMchannel step.* Procedure:Set the FUNCTION to AM. Turn off the main power.While depressing the TUNING+ button or the PRESET+ button,press the power ?/1 button to turn on the main power. Eitherthe message “AM 9 k STEP” or “AM 10 k STEP” appears. Selectthe desired step.* For Canadian/E model onlySOFTWARE VERSION DISPLAY MODE* The software version is displayed.* Procedure:While depressing the TUNER and the VIDEO buttonssimultaneously, press the power ?/1 button to turn on the mainpower. The model name, destination and the software version aredisplayed.AUTOBETICAL MODE (AEP Model only)* This mode is installed in the Europe models only. When this modeis used, the receiver scans the broadcasts that can be received bytuner, and sets up the broadcasts. Be sure to start scanning afterconnecting the antenna.* Procedure:Check that the antenna is connected. Press the power ?/1 buttonwhile pressing the MEMORY button to turn on the power. Themessage “Autobetical select” appears and scanning starts by tuner.SURROUND CLEAR MODE* The preset sound field is cleared when this mode is activated.Use this mode before returning the product to clients uponcompletion of repair.* Procedure:While depressing the SOUND FIELD ON/OFF button, pressthe power ?/1 button to turn on the main power. The message“SURR CLR” appears and initialization is performed.KEY CHECK MODE* Button check* Procedure:While depressing the MD/TAPE and the CD buttonssimultaneously, press the power ?/1 button to turn on the mainpower.“RES 36 KEY” appears.Every pressing of any button other than ?/1 counts down thebuttons. The buttons which are already counted once are notcounted again. When all buttons are pressed “RES 00 KEY”appears.When MASTER VOLUME is rotated in clockwise direction,“VOL MIN”, “VOL 1” to “VOL 30”, “VOL MAX” appear.7STR-DE375SECTION 3DIAGRAMS3-1. CIRCUIT BOARDS LOCATION WAVEFORMS MAIN BOARD SECONDARY boardPRIMARY board(except E model)VOL-SEL board (E model)MAIN boardDISPLAY boardHEADPHONE boardPOWER SWITCH boardSTANDBY board1 IC1 qf 2.2Vp-p230ns2 IC103 qa 5.0Vp-p200ns DISPLAY BOARD 8STR-DE375For schematic diagrams.Note: All capacitors are in F unless otherwise noted. pF: F50 WV or less are not indicated except for electrolyticsand tantalums. All resistors are in and 1/4 W or less unless otherwisespecified.%: indicates tolerance.f: internal component. 2 : nonflammable resistor. 1 : fusible resistor. C : panel designation. A : B+ Line. B : B Line. H : adjustment for repair. Voltages and waveforms are dc with respect to groundunder no-signal (detuned) conditions.No mark : FM Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to normal productiontolerances. Waveforms are taken with a oscilloscope. Circled numbers refer to waveforms. Signal path.F: FMJ: CD AbbreviationCND: Canadian modelMY: Malaysia modelSP: Singapore modelAR: Argentina modelTHIS NOTE IS COMMON FOR PRINTED WIRINGBOARDS AND SCHEMATIC DIAGRAMS.(In addition to this necessary note is printed in eachblock.)Note:The components identified bymark ! or dotted line with mark! are critical for safety.Replace only with part numberspecified.Note:Les composants identifis parune marque ! sont critiquespour la scurit.Ne les remplacer que par unepice portant le numro spcifi.For printed wiring boards.Note: X : parts extracted from the component side.: Pattern from the side which enables seeing.CBThese are omitted.EQBThese are omitted.CE99STR-DE3753-2. BLOCK DIAGRAMTUNER UNITRESETQ201,202Q659 Signal Path RCH is omitted due to same as LCH.: FM: CDFMAMR-CHS DATAPLL DATAS CLKS CESIGNALSTEREOAUTO STOPT MUTES DATADATA OUTS CLKSLATSIGNALSTEREOTUNEDT MUTEFMAM DET OUTR OUTL OUTCD INMD/TAPE OUTMD/TAPE INVIDEO/AUDIO OUTVIDEO/AUDIO INDVD/MULTI CHFRONTSURROUNDCENTERWOOFERSUBJ501J401,402RT IN61FC R IN34FC SR IN32FC C IN62DATA52DOLBYSURROUND PROCESSORIC20216L OUTCLK53ENABLE51218SR OUT10C OUTDATACLK4141613X14.33MHzRDSIC1AEP,UK MODELSAUDIO SELECTIC201IN F266IN A271REC OUT 2A61IN B270IN G263SW CH N IN27D OUT25949L CH OUTREC OUT 2B6143SL CH OUT37C CH OUT28SW CH OUTMUTEQ361SEL OUT260T IN258SL CH N IN44DATA32CLOCK31LATCH33SL CH D IN45C CH N IN38C CH D IN39DATACLOCKS CEMUTEQ362MUTEQ363MUTEQ364IN162+V OUT1POWER AMPIC7015NF1LIMITERQ7013-V OUT1LIMITERQ702BOOSTERQ703BOOSTERQ704CURRENTDETECTQ705,706OVER LOADDETECTQ708,709IN2812+V OUT29NF2LIMITERQ65111-V OUT1LIMITERQ652BOOSTERQ653BOOSTERQ654CURRENTDETECTQ655,656IN+16+V OUTPOWER AMPIC5012IN-LIMITERQ5015-V OUTLIMITERQ502BOOSTERQ503BOOSTERQ504CURRENTDETECTQ505,506OVER LOADDETECTQ507,509OVER LOADDETECTQ657,658Q707D706D606D506D721PROTECTSWITCHQ722,723,725RELAYDRIVEQ791RY791RELAYDRIVEQ730RY710D731RELAYDRIVEQ610RY610D735RELAYDRIVEQ550RY510D734IC40131RELAYDRIVEQ470RY470D736LRSRSLCR-CHR-CHSPEAKERSFRONTSPEAKERSSURROUNDSPEAKERSCENTERTM601TM602SUB WOOFERAUDIO OUTJ40321AUTO STOP22T MUTE23STEREO IN28SIGNAL24PLL DATA19S DATA18S CLK20S CE38RDS CLK IN15RDS DATA8S CLK9S CE17S CE7S DATA59FUNC MUTE47PROTECTAUTO STOPT MUTESTEREOSIGNALPLL DATAS DATAS CLKS CECLOCKS CEDATA54H/P RY61HP SW53FRONT RY51REAR RY52CTR RY55WOOFER RY100 9133 30A/D1A/D4FUNCTIONKEYS202-229,231-236S FIELD LED68SURR LED66LEVEL LED65NAME LED64SETUP LED63LED DRIVEQ210-213,215D210-213,D215SYSTEM CONTROLIC103RV201ENCODER31ENCODER50ENCODER49SYS POWER56MASTERVOLUME?/1SYSTEMPOWERS20090 8078 75.DIG1-10S1-S15FLUORESCENTINDICATOR TUBEF1F2FL20110RESET39STOP26SIRCSREMOTECONTROLRECEIVER21IC203POWERCONTROLIC9505836+5.6V REGQ951D201D202D910-913ACINT902RY901D915D914RELAYDRIVEQ901CNP901D820-82346VDD34VDD16VDD1VDD-7VREG32+7VREG31+5VREG31+5VREG31+9VREG31DOLBY SURR+9VDISPLAY+5V(A)AUDIO+7VAUDIO-7VTUNER,RDSAUDIO+5V(B)IC805IC803IC804IC807IC802POWER RY48RELAY+B+12VREG31POWER AMP+12VIC801-24V REGQ801FL201-24V-B SWQ715POWER AMP-BD824D802T901POWER AMP+B240V220V120V0VVOLTAGESELECTORE MODELS9011211X1X2X2015.00MHzF1F2R-CHPHONESJ2001010STR-DE3753-3. PRINTED WIRING BOARD MAIN SECTION IC 1IC 805IC 202IC 201IC 401IC 807IC 701IC 501IC 801IC 804IC 803IC 802IC 702C 416R 408C 417TOTUNERUNITTODISPLAYBOARD(Page 14)C 467C 468 Semiconductor LocationRef. No.LocationRef. No.LocationD301D-1D470C-8D505F-4D506F-4D508F-3D510C-10D605F-8D606F-8D607F-7D608F-8D610C-9D627F-11D706F-6D710C-11D721E-11D722D-11D725G-10D726F-10Ref. No.LocationD727F-5D728F-6D731C-10D732D-11D734C-10D735C-9D736C-8D757F-9D791F-12D801E-13D802C-13D804E-13D820E-12D821E-13D822E-13D823D