Sony-STRK502-rec-sm 维修电路原理图.pdf

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1、STR-DE575/K502/K502PUS ModelSTR-DE575/K502/K502PCanadian ModelSTR-DE575/K502PE ModelAustralian ModelSTR-K502PSERVICE MANUALFM STEREO FM-AM RECEIVERSony CorporationAudio Entertainment GroupGeneral Engineering Dept.9-873-862-112001D1600-1 2001.4 Continued on next page SPECIFICATIONSVer 1.0 2001. 04Dol

2、by Laboratories Licensing Corporation.“DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC”are trademarks of Dolby Laboratories Licensing Corporation.AUDIO POWERSPECIFICATIONSPOWER OUTPUT ANDTOTAL HARMONICDISTORTION:With 8 ohm loads, bothchannels driven, from 20 -20,000 Hz; rated 100 wattsper channel

3、 minimum RMSpower, with no more than0.09% total harmonicdistortion from 250milliwatts to rated output(USA model only).Amplifier section(8 ohms 20 Hz - 20 kHz,THD 0.09%)100 W + 100 W(8 ohms at 1 kHz, THD0.7%)Front1): 100 W/chCenter1): 100 WSurround1): 100 W/ch1) Depending on the sound field settings

4、andsources, there may be no sound output.MULTI CH IN, CD,MD/TAPE, DVD/LD, TV/SAT,VIDEO*, AUX:10 Hz - 50 kHz +0.5/2 dB (with soundfield and equalizerbypassed)MULTI CH IN, CD,DVD/LD, MD/TAPE, TV/SAT,VIDEO*, AUX:Sensitivity: 250 mVImpedance: 50kilohmsS/Na): 96 dB (A, 250mVb)a) Input short.b) Weighted n

5、etwork, input level.DVD/LD (coaxial):Sensitivity: Impedance: 75 ohmsS/N: 100 dB (A, 20kHz LPF)(Optical):Sensitivity: Impedance: S/N: 100 dB (A, 20kHz LPF)MD/TAPE, (OUT);VIDEO*,(AUDIO OUT):Voltage: 250 mV,Impedance: 10kilohmsSUB WOOFER:Voltage: 2 VImpedance: 1kilohmsPHONES:Accepts low- andhigh-impeda

6、nceheadphones6 dBDVD/LD, TV/SAT48 kHz (TV/SAT, MD/TAPE OPTICAL IN)96 kHz (DVD/LDOPTICAL IN,COAXIAL IN)Sampling FrequencyEQOutputsFrequency responseInputs (Analog)Inputs (Digital)Reference Power OutputRated Power Output at Stereo modePhoto : STR-DE575RadioFans.CN 收音机爱 好者资料库2STR-DE575/K502/K502P0.5 %

7、(50 mV/m, 400kHz)At 9 kHz: 35 dBAt 10 kHz: 40 dBc) You can change the AM tuning interval to 9kHz. After tuning in any AM station, turnoff the receiver. Hold down the TUNING +button and press the ?/1 button. All presetstations will be erased when you change thetuning interval. To reset the scale to 1

8、0 kHz,repeat the procedure.Video sectionVideo: 1 Vp-p 75 ohmsS-video*:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsVideo: 1 Vp-p 75 ohmsS-video*:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsGeneralTuner section:PLL quartz-lockeddigital synthesizersystemPreamplifier section:Low-noise NF typeequalizerPower amplifie

9、rsection:Pure-complementarySEPPFM tuner section87.5 - 108.0 MHz75 ohms, unbalanced10.7 MHzMono: 18.3 dBf,2.2 V/75 ohmsStereo: 38.3 dBf22.5 V/75 ohms11.2 dBf, 1 V/75 ohmsMono: 76 dBStereo: 70 dBMono: 0.3%Stereo: 0.5%45 dB at 1 kHz30 Hz - 15 kHz +0.5/2dB60 dB at 400 kHzAM tuner sectionWith 10-kHz tuni

10、ngscale:530 - 1710 kHzc)With 9-kHz tuningscale:531 - 1710 kHzc)Loop antenna450 kHz50 dB/m (at 1,000 kHzor 999 kHz)54 dB (at 50 mV/m)120 V AC, 60 HzModels of area code U:220WIn standby condition:1 WModels of area code CA:315 VAIn standby condition:1 W1 switched, total120 W/1A Max430 308.5 157.5 mm(14

11、.5 10.4 5.3 in.)including projectingparts and controls7.5 kg (16 lbs. 9 oz.)7.4 kg (16 lbs. 6 oz.)Design and specifications are subjectto change without notice. FM wire antenna (1) AM loop antenna (1) STR-DE575 only STR-K502 only Model of area code U only - Remote commander RM-U305 (remote) (1) Mode

12、l of area code CA only - Remote commander RM-PP505 (remote) (1) Remote commander RM-U305 (remote) (1)R6 (size-AA) batteries (2)* STR-DE575 onlyTuning rangeAntenna terminalsIntermediate frequencySensitivityUsable sensitivityS/NHarmonic distortion at 1 kHzSeparationFrequency responseSelectivityTuning

13、rangeAntennaIntermediate frequencyUsable sensitivityS/NHarmonic distortionSelectivityInputsOutputsSystemSupplied accessoriesMass (Approx.)DimensionsAC outlets Power consumptionPower requirementsRadioFans.CN 收音机爱 好者资料库3STR-DE575/K502/K502PSAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK

14、 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

15、 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 groundand from all exposed metal p

16、arts to any exposed metal part havinga return 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 batt

17、ery-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

18、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-OUTParts No.MODEL IDENTIFICATION BACK PANEL ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFS PAR UNE MA

19、RQUE 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.PARTS No.4-232-240-0s4-232-240-1s4-232-240-3s4-232-240-4s4-232-24

20、0-5s4-232-240-6s4-232-240-7s4-232-240-8sMODELDE575 : USDE575 : CanadianK502P : USK502P : CanadianK502P : AustralianK502P : SingaporeK502P : MexicanK502: USTo Exposed Metal Parts on Set0.15 F1.5 kACVoltmeter(0.75 V)Earth GroundFig. A. Using an AC voltmeter to check AC leakage.4STR-DE575/K502/K502PTAB

21、LE OF CONTENTS1. GENERAL 52. TEST MODE 73. DIAGRAMS3-1.Circuit Boards Location . 93-2.Block Diagrams . 10 Main Section . 10 Display/Power Section. 113-3.Printed Wiring Board Digital Section . 123-4.Schematic Diagram Digital Section (1/3) . 133-5.Schematic Diagram Digital Section (2/3) . 143-6.Schema

22、tic Diagram Digital Section (3/3) . 153-7.Printed Wiring Board Main Section . 163-8.Schematic Diagram Main Section (1/3) . 173-9.Schematic Diagram Main Section (2/3) . 183-10. Schematic Diagram Main Section (3/3) . 193-11. Printed Wiring Board Display Section . 203-12. Schematic Diagram Display Sect

23、ion . 213-13. Printed Wiring Board Video Section . 223-14. Schematic Diagram Video Section . 233-15. Schematic Diagram Power Section . 243-16. IC Block Diagrams. 253-17. IC Pin Function Description. 274. EXPLODED VIEWS4-1.Front Panel Section . 294-2.Chassis Section. 305. ELECTRICAL PARTS LIST 325STR

24、-DE575/K502/K502PSECTION 1GENERALMULTI CHANNEL DECODINGINPUT MODEMUTINGVIDEO 1MD/TAPEVIDEO 2CDDVD/LDTUNERTV/SATAUXDISPLAYDIMMERPHONESSPEAKERS/ MEMORYSHIFTFM MODEFMAMEQSURRLEVELSET UPNAMEAENTERA.F.D.SOUND FIELDMULTI CH INEQUALIZERCINEMA STUDIO EXMODE2CHPRESETTUNINGTUNING+BCMASTER VOLUME+890qaqs1qdqf2

25、 34567m1 ?/1 switchPress to turn the receiver on and off.2 DISPLAY buttonPress repeatedly to change the information on thedisplay window as follows:Index name of the component or the preset station*mFUNCTION button indication or frequency*mSound field applied to the program source* Index name appear

26、s only when you have assigned one to thecomponent or preset station (see page 41). Index name does notappear when only blank spaces have been entered, or it is thesame as the function button.* Frequency appears only when the tuner is selected.3 DIMMER buttonPress repeatedly to adjust the brightness

27、of thedisplay. When you want to turn off the display, set inthe “DIM.RANGE” parameter in the SET UP menu(page 45).45The following buttons operate the built-in tuner. Fordetails, see “Receiving Broadcasts” starting from page 38.PRESET TUNING +/ buttonsScan all preset stations.TUNING +/- buttonsScan a

28、ll the available radio stations.MEMORY buttonPress to memorize a preset station.SHIFT buttonSelects a memory page for preset stations.FM MODE buttonIf “STEREO” flashes in the display and the FM stereoreception is poor, press this button. You will not havethe stereo effect but the sound is improved.F

29、M buttonSelects the FM band.AM buttonSelects the AM band.MULTI CHANNEL DECODING indicatorThis indicator lights up when the unit is decodingsignals recorded in a multi channel format.6 Use the CINEMA STUDIO EX buttons to enjoy theCINEMA STUDIO EX sound effects.A/B/C buttonsPress to activate the CINEM

30、A STUDIO EX A, B or Csound field (page 29).7 Use the SOUND FIELD buttons to enjoy surroundsound. For details, see “Enjoying Surround Sound”starting from page 27.A.F.D. button / indicatorPress to set the receiver to automatically detect thetype of audio signal being input and perform properdecoding (

31、if necessary).MODE button / indicatorPress to activate the sound field selection mode (page 28).2CH button / indicatorPress to output sound from only the front (left andright) speakers.8 INPUT MODE buttonPress to select the input mode for your digitalcomponents (DVD/LD, TV/SAT).Each press switches t

32、he input mode of the currentlyselected component.SelectToAUTOGive priority to digital signalswhen there are both digital andanalog connections. If there are nodigital signals, analog is selectedDIGITAL (OPTICAL)Specify the digital audio signalsinput to the DIGITAL OPTICALinput jacksDIGITAL (COAXIAL)

33、Specify the digital audio signalsinput to the DIGITAL COAXIALinput jacks (DVD/LD only)ANALOGSpecify the analog audio signalsinput to the AUDIO IN (L and R)jacksNoteIf 96 kHz digital signal is input, the tone, sound field andsurround parameters do not function.9 Function buttonsPress one of the butto

34、ns to select the component youwant to use.To selectPressVCRVIDEODVD or LD playerDVD/LDTV or satellite tunerTV/SATMD or Tape deckMD/TAPECD playerCDBuilt in tunerTUNERAn audio componentAUXAfter selecting the component, turn on the componentyou selected and play the program source. After selecting VCR,

35、 DVD player, or LD player, turn on theTV and set the TVs video input to match the componentyou selected.0 MASTER VOLUME controlAfter turning on the component you selected, rotate toadjust the volume.qa MUTING buttonPress to mute the sound. MUTING appears in thedisplay when the sound is muted.qs EQUA

36、LIZER button Press to turn the equalizer on or off. The EQ indicatorin the display lights when the equalizer is turned on.When you adjust the equalizer using the EQparameters (page 36) the settings are storedautomatically and can be reproduced wherever youturn on the equalizer. The equalizer is not

37、compatible with 96 kHz digital audiosignals and during MULTI CH IN input.z When you want to listen to an analog sourcewithout any digital processingDo the following to bypass the sound field and equalizercircuits.1 Press 2CH.2 Press EQ to turn off the EQ indicator.The result will be a sound that is

38、highly faithful to theprogram source.qd MULTI CH IN buttonPress to enjoy the audio source connected to theMULTI CH IN jacks with the video from the selectedcomponent. Press again to cancel MULTI CH IN. When the MULTI CH IN is selected, the tone, equalizer,and sound field effects do not function.qf S

39、PEAKERS buttonPress SPEAKERS button to ON.PHONES jackConnects headphones. When you connect the headphones, no sound will comefrom the speakers.This section is extractedfrom instruction manual.6STR-DE575/K502/K502PMULTI CHANNEL DECODINGINPUT MODEMUTINGVIDEO 1MD/TAPEVIDEO 2CDDVD/LDTUNERTV/SATAUXDISPLA

40、YDIMMERPHONESSPEAKERS/ MEMORYSHIFTFM MODEFMAMEQSURRLEVELSET UPNAMEAENTERA.F.D.SOUND FIELDMULTI CH INEQUALIZERCINEMA STUDIO EXMODE2CHPRESETTUNINGTUNING+BCMASTER VOLUME+w;wawsqg qhqjqk qlqg EQ buttonPress to activate the equalizer parameters (page 36).The indicator on the button lights up and you cana

41、djust the various equalizer parameters.qh SURR buttonPress to activate the surround parameters (page 34).The indicator on the button lights up and you canadjust the various surround parameters (effect level,wall type, etc.).qj LEVEL buttonPress to activate the speaker level parameters (page35). The

42、indicator on the button lights up and you canadjust the various speaker level parameters (frontbalance, surround balance, etc.).qk SET UP buttonPress to activate the setup mode, then use the cursorbuttons (wa) to select any of the following indications.You can then make various settings using the jo

43、g dial(ws).When you selectY ou canSpeaker typeSpecify the type of speakers.(page 17)Speaker setupSpecify the front, center,surround speaker sizes, thesurround speaker position, andwhether or not you are using asub woofer. (page 17)When you selectY ou canSpeaker DistanceSpecify the front, center, and

44、surround speaker distances.(page 19)MULTI CH IN video input Specify the video input to beused with the audio signals fromthe MULTI CH IN jacks. (page45)Dimmer rangeSpecify the display to turn offwhen you press the DIMMERbutton several times. (page 45)ql NAME buttonPress to activate the name function

45、 and enter namesfor preset stations and program sources (page 43).w; ENTER buttonPress to enter individual characters for the presetstation and program source names.wa Cursor buttons (/)Press to select various speaker level, surround, andequalizer parameters (etc.).ws Jog dialTurn to adjust the sele

46、cted speaker level, surround,and equalizer parameters (etc.).7STR-DE575/K502/K502PSECTION 2TEST MODEFACTORY PRESET MODE* All preset contents are reset to the default setting.* Procedure:While depressing the VIDEO and the 2CH buttons simul-taneously, press the power ?/1 button to turn on the main pow

47、er.The message FACTORY appears and switch off the set.While depressing the VIDEO and the 2CH buttons simul-taneously, press the power ?/1 button again. The messageFACTORY appears and the present contents are reset to the defaultvalues.AM CHANNEL STEP 9 KHZ/10 KHZSELECTION MODE* Either the 9 kHz step

48、 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 thePRESET TUNING+ button, press the power ?/1 button to turnon the main power. Either the message 9 k STEP or 10 k STEPappears. Select the desired

49、 step.* For US/Canadian/E model onlyDSP VERSION DISPLAY MODE* DSP version is displayed.* Procedure :While depressing the MD/TAPE and the A.F.D buttons simul-taneously, press the power ?/1 button to turn on the main power.“ DSP ”and the version are displayed.FLUORESCENT INDICATOR TUBE TEST MODE* All

50、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 MD/TAPE and the SHIFT buttons simul-taneously, press the power ?/1 button to turn on the main power.1.All segments turn on.