Sony-STRDB790-rec-sm 维修电路原理图.pdf

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1、SERVICE MANUALFM STEREO FM/AM RECEIVERSPECIFICATIONSSTR-DA1000ES/DB790Photo: STR-DA1000ESVer. 1.4 2004.119-877-370-05Sony Corporation2004K05-1Audio Group 2004.11Published by Sony Engineering CorporationUS ModelCanadian ModelSTR-DA1000ESAEP ModelUK ModelE ModelAustralian ModelChinese ModelSTR-DB790 C

2、ontinued on next page This receiver incorporates Dolby* Digital and ProLogic Surround and the DTS* Digital SurroundSystem.* Manufactured under license from DolbyLaboratories.“Dolby”, “Pro Logic” and the double-D symbol aretrademarks of Dolby Laboratories.*“DTS” and “DTS Digital Surround” are registe

3、redtrademarks of Digital Theater Systems, Inc.AUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONIC DISTORTION:(Models of area code U only)With 8 ohm loads, both channels driven, from 20 20,000 Hz; rated 100 watts per channel minimum RMS power, with no more than 0 09% total harmonic distortion f

4、rom 250 milliwatts to rated outputAmplifier sectionPOWER OUTPUTSTR-DA1000ES:Rated Power Output at Stereo Mode(8 ohms 20 Hz 20 kHz, THD 0 09%) 100 W + 100 W(4 ohms 20 Hz 20 kHz, THD 0 09%) 80 W + 80 WReference Power Output(8 ohms 20 Hz 20 kHz, THD 0 09%)FRONT1): 100 W + 100 WCENTER1): 100 WSURR1): 10

5、0 W + 100 WSURR BACK1): 100 W + 100 W(4 ohms 20 Hz 20 kHz, THD 0 09%)FRONT1): 80 W + 80 WCENTER1): 80 WSURR1): 80 W + 80 WSURR BACK1): 80 W + 80 W(8 ohms 1 kHz, THD 0 7%)FRONT1): 100 W + 100 WCENTER1): 100 WSURR1): 100 W + 100 WSURR BACK1): 100 W(4 ohms 1 kHz, THD 0 7%)FRONT1): 90 W + 90 WCENTER1):

6、90 WSURR1): 90 W + 90 WSURR BACK1): 90 W(8 ohms 20 Hz 20 kHz, THD 0 09%) FRONT1): 90 W + 90 WCENTER1): 90 WSURR1): 90 W + 90 WSURR BACK1): 90 W(4 ohms 20 Hz 20 kHz, THD 0 09%)FRONT1): 80 W + 80 WCENTER1): 80 WSURR1): 80 W + 80 WSURR BACK1): 80 W1) Depending on the sound field settings and the source

7、, there may be no sound output2) Measured under the following conditions:3) Measured under the following conditions:Frequency responseInputs (Analog)Area codePower requirementsSCNP, MY, CEL, CEK, AU, 230 V AC, 50 HzTW110 V AC, 60 HzArea codePower requirementsKR220 V AC, 50 HzPHONORIAA equalization c

8、urve0 5 dBMULTI CH IN, CD/SACD, MD/TAPE, DVD, TV/SAT, VIDEO 1, 2, 310 Hz 100 kHz+0 5/2 dB (when ANALOG DIRECT is selected)PHONOSensitivity: 2 5 mVImpedance: 50 kilohmsS/N3): 86 dB (A, 2 5 mV4)MULTI CH IN, CD/SACD, MD/TAPE, DVD, TV/SAT, VIDEO 1, 2, 3Sensitivity: 150 mVImpedance: 50 kilohmsS/N4): 96 d

9、B(A, 150 mV5)STR-DB790:Rated Power Output at Stereo Mode(8 ohms 1 kHz, THD 0 7%) 90 W + 90 W3)(4 ohms 1 kHz, THD 0 7%) 80 W + 80 W3)Reference Power Output2)RadioFans.CN 收音机爱 好者资料库2STR-DA1000ES/DB7904) INPUT SHORT5) Weighted network, input levelInputs (Digital)OutputsEQFM tuner sectionTuning range87

10、5 - 108 0 MHzAntennaFM wire antennaAntenna terminals75 ohms, unbalancedSensitivityMono:18 3 dBf, 2 2 V/75 ohmsStereo:38 3 dBf, 22 5 V/75 ohms Useable sensitivity11 2 dBf, 1 V/75 ohmsS/NMono: 76 dBStereo: 70 dBHarmonic distortion at 1 kHzMono: 0 3%Stereo: 0 5%Separation45 dB at 1 kHzFrequency respons

11、e30 Hz 15 kHz, +0 5/2 dBSelectivity60 dB at 400 kHzAM tuner sectionTuning rangeSTR-DA1000ES:530 1,710 kHz6)(With 10-kHz tuning scale)531 1,710 kHz6)(With 9-kHz tuning scale)STR-DB790:531 1,602 kHz(With 9-kHz tuning scale)AntennaLoop antennaUsable sensitivity50 dB/m (at 1,000 kHz or 999 kHz)S/N54 dB

12、(at 50 mV/m)Harmonic distortion0 5% (50 mV/m, 400 Hz)SelectivityAt 9 kHz:35 dBAt 10 kHz:40 dB6) You can change the AM tuning scale to 9 kHz or 10 kHz After tuning in any AM station, turn off the receiver While holding down PRESET TUNING + or TUNING +, press ?/1 All preset stations will be erased whe

13、n you change the tuning scale To reset the scale to 10 kHz (or 9 kHz), repeat the procedureVideo sectionInputs/OutputsVideo:1 Vp-p, 75 ohmsS-video:Y: 1 Vp-p, 75 ohmsC: 0 286 Vp-p, 75 ohmsCOMPONENT VIDEO:Y: 1 Vp-p, 75 ohmsB-Y: 0 7 Vp-p, 75 ohmsR-Y: 0 7 Vp-p, 75 ohmsDVD (Coaxial)Impedance: 75 ohmsS/N:

14、 100 dB (A, 20 kHz LPF)DVD, TV/SAT, MD, VIDEO3 (Optical)S/N: 100 dB(A, 20 kHz LPF)MD/TAPE (REC OUT), VIDEO 1, 2 (AUDIO OUT)Voltage: 150 mVImpedance: 2 2 kilohmsSUB WOOFERVoltage: 2 VImpedance: 1 kilohmsGain levels10 dB, 1 dB stepGeneralPower requirementsPower consumptionPower consumption (during sta

15、ndby mode)1 WAC outletsDimensions430 161 400 mmincluding projecting parts and controlsMass (Approx )14 5 kgSupplied accessoriesFM wire antenna (1)AM loop antenna (1)STR-DA1000ES:Remote commander RM-LG112 (1) R6 (size-AA) batteries (2)STR-DB790:Remote commander RM-PP412 (1) R6 (size-AA) batteries (2)

16、Design and specifications are subject to change without noticeArea codePower requirementsU, CA120 V AC, 60 HzCEL, CEK, AU230 V AC, 50/60 HzSP, MY, KR, CN220 230 V AC, 50/60 HzTW110 V AC, 60 HzArea codePower consumptionU290 WCA340 VACEL, CEK, AU290 WSP, MY, KR, CN290 WTW290 WArea codeAC outletsU, CA1

17、 switched, 120 W/1A MAXSP, MY, TW 1 switched, 100 W MAXVer 1.1NOTE: AbbreviationAU: Australian modelCA: Canadian modelCEK : UK modelCEL : AEP modelCN: Chinese modelKR: Korean modelMY : Malaysia modelSP: Singapore modelTW : Taiwan modelU: US modelRadioFans.CN 收音机爱 好者资料库3STR-DA1000ES/DB790Notes on chi

18、p component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by heat.Fig. A.Using an AC voltmeter to check AC leakage.1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundSAFETY CHECK-OUTAfter correcting the or

19、iginal service problem, perform the follow-ing safety check 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 as described below.LEAKAGE TESTThe AC leakage from any exposed metal

20、 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 manufactu

21、rers 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 a VOMor battery-operated AC voltmeter. The “limit” indication is 0.75V, so analog meters must h

22、ave an accurate low-voltage scale.The Simpson 250 and Sanwa SH-63Trd are examples of a pas-sive VOM that is suitable. Nearly all battery operated digitalmultimeters that have a 2 V AC range are suitable. (See Fig. A)ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQ

23、UE 0SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTEDES PICES SONT CRITIQUES POUR LA SCURITDE FONCTIONNEMENT. NE REMPLACER CES COM-POSANTS QUE PAR DES PICES SONY DONT LESNUMROS SONT DONNS DANS CE MANUEL OUDANS LES SUPPLMENTS PUBLIS PAR SONY.SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0

24、OR DOTTEDLINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.UNLEADED SOLDERBoards requiring use of unleaded solder are printed wit

25、h the lead-free mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may not come printed withthe lead free mark due to their particular size): LEAD FREE MARKUnleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher

26、thanordinary solder.Ordinary soldering irons can be used but the iron tip has to beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350 C.Caution: The printed pattern (copper foil) may peel away if theheated tip is applied for

27、 too long, so be careful! Strong viscosityUnleaded solder is more viscou-s (sticky, less prone to flow)than ordinary solder so use caution not to let solder bridges oc-cur such as on IC pins, etc. Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added

28、to ordinary solder.4STR-DA1000ES/DB7901.SERVICING NOTES.52.GENERAL.7Location of Controls .73.DISASSEMBLY3-1.Disassembly Flow . 103-2.Case (414535) . 113-3.COMP-V Board . 113-4.Back Panel Block . 123-5.Main Block. 123-6.DIGITAL Board . 133-7.STAY-3/STAY-4/SP-B/SP-A/S-VIDEO/VIDEO/VIDEO-AU/AU-IN Board

29、. 143-8.MAIN Board . 144.TEST MODE. 155.ELECTRICAL ADJUSTMENT. 176.DIAGRAMS6-1.Block Diagram TUNER/VIDEO Section . 196-2.Block Diagram AUDIO DSP Section . 206-3.Block Diagram AUDIO CONTROL Section . 216-4.Block Diagram AUDIO AMP Section . 226-5.Block Diagram DISPLAY/KEY CONTROL Section . 236-6.Block

30、 Diagram POWER SUPPLY Section . 246-7.Note for Printed Wiring Boardsand Schematic Diagrams . 256-8.Printed Wiring Board DIGITAL Board (Component Side) . 266-9.Printed Wiring Board DIGITAL Board (Conductor Side) . 276-10. Schematic Diagram DIGITAL Board (1/4) . 286-11. Schematic Diagram DIGITAL Board

31、 (2/4) . 296-12. Schematic Diagram DIGITAL Board (3/4) . 306-13. Schematic Diagram DIGITAL Board (4/4) . 316-14. Printed Wiring Boards VIDEO/VIDEO-AU Boards . 326-15. Schematic Diagram VIDEO/VIDEO-AU Boards . 336-16. Printed Wiring Boards HP-V3/S-VIDEO Boards . 346-17. Schematic Diagram HP-V3/S-VIDE

32、O Boards . 356-18. Printed Wiring Board COMP-V Board . 366-19. Schematic Diagram COMP-V Board . 376-20. Printed Wiring Board AU-IN Board . 386-21. Schematic Diagram AU-IN Board . 396-22. Printed Wiring Board MAIN Board . 406-23. Schematic Diagram MAIN Board (1/3) . 416-24. Schematic Diagram MAIN Boa

33、rd (2/3) . 426-25. Schematic Diagram MAIN Board (3/3) . 436-26. Printed Wiring Board A-CLASS Board . 446-27. Schematic Diagram A-CLASS Board . 456-28. Printed Wiring Boards SBL/STAY/STAY2 Boards . 466-29. Schematic Diagram SBL/STAY/STAY2 Boards . 476-30. Printed Wiring Boards SP-A/SP-B/STAY3/STAY4 B

34、oards . 486-31. Schematic Diagram SP-A/SP-B/STAY3/STAY4 Boards . 496-32. Printed Wiring Boards DISPLAY/FUN/VOL Boards . 506-33. Schematic Diagram DISPLAY/FUN/VOL Boards . 516-34. Printed Wiring Boards DC1/DC2/TH/4/8 SW Boards . 526-35. Schematic Diagram DC1/DC2/TH/4/8 SW Boards . 536-36. Printed Wir

35、ing Boards AC/PRI/SEC1/SEC3 Boards . 546-37. Schematic Diagram AC/PRI/SEC1/SEC3 Boards . 556-38. IC Pin Function Description . 636.EXPLODED VIEWS7-1.Case Section . 707-2.Chassis Section-1 . 717-3.Chassis Section-2 . 727-4.Main Block Section. 737-5.MAIN Board Block. 747-6.Chassis Section-3 . 757-7.Fr

36、ont Panel Block-1 . 767-8.Front Panel Block-2 . 777-9.Front Panel Block-3 . 788.ELECTRICAL PARTS LIST. 79TABLE OF CONTENTSVer 1.35STR-DA1000ES/DB790SECTION 1SERVICING NOTES MODEL IDENTIFICATION Back Panel PART No.ModelPART No.DB790: AEP, UKand Australian models4-245-425-0DB790: Singapore andMalaysia

37、 models4-245-425-1DB790: Taiwan model4-245-425-2DB790: Chinese model4-245-425-3DB790: Korean model4-245-425-4DA1000ES: US model4-245-425-6DA1000ES: Canadian model4-245-425-7Ver 1.3ERROR MESSAGESIf there is a malfunction, the display shows a code of two numbers and a message. You can check the condit

38、ion of the system by message.Refer to the following table to solve the problem.messagescause and responseDEC. ERORAppears when the signal which the receiver can not decode (example DSD-CD) is input when“DEC.” is set to “DEC. PCM”. Set to “DEC. AUTO”.PROTECTIrregular current output to the speakers. T

39、urn off the receiver and check the speaker connection.Then turn on the power again. Be comes this display, When short current flowed with breakage ofthe power MOS, or when detection resistor becomes open in connection with it.6STR-DA1000ES/DB790SERVICE POSITIONConnecting the clip for GNDWhen checkin

40、g without back panel, it is necessary to connect the clip for GND to a chassis.clipAU-IN board (JW101)It is necessary to remove cord bushing from back panel.7STR-DA1000ES/DB790SECTION 2GENERALThis section is extracted frominstruction manual.2896534781qlwswaw;qkqjqhqg qf qd qs qaq;A.F.D. qd DISPLAY 7

41、 Display 5 INPUT MODE 8 INPUT SELECTOR 0 IR receptor 1MAIN MENU 3MASTER VOLUME /+ 9 MEMORY/ENTER 4 MENU w; MOVIE qs MULTI CHANNEL DECODING indicator 6MUSIC qa PHONES jack waPRESET TUNING /+ qj SPEAKERS wsSURR BACK DECODING qg TUNING /+ qhVIDEO 3 INPUT jacks ql 2CH qf /+ qk ?/1 (power) 2LOCATION OF C

42、ONTROLS Front Panel 8STR-DA1000ES/DB790 Remote Commander (RM-LG112) (STR-DA1000ES) NXmM.-SH FOP MENU/GUIDEAV MENUMU INGMAS ERVOLD SPLAYV VOLV CHWIDEON SCREENV/V DEOMAINMENURE URN/EXID TUNINGDISCALTANCL ARSEARCH MODE2CHA F D123456780/ 010 1112MOVIESUBTITLEE TEMUS CAUDIOSWAP/ANGLEUMP/IMEPRESET/H D SKI

43、PESONEAACBI L NGSBECODINGD R CxOfFGgfFGgUSE MODESYSTEM STANDBYSLEEPV ?/1AV ?/1?/1PLqfwaw;qaqk8ql92367qs5q;4qdqgqh1qjNXmM.-SHIFOP MENU/GU DEAV MENUMU INGMAS ERVOLDISPLAYV VOLV CHW DEON SCREENV/VIDEOMA NMENURE URN EXID TUNINGD SCALTANCLEARSEARCH MODE2CHA F D1234567890 100/1112MOV ESUB TLEENTERMUSICAUD

44、IOSWAP/ANGLEUMP/IMEPRESET/C /D S IPESONEAACBI LINGSBDECODINGDIRECOfFGgfFGgUSE MODESYSTEM STANDBYSLEEPV ?/1AV ?/1?/1PLwdwfwswjwlwgejefekearar;esede;wkelwhegeh?/1 1Press to turn the receiver on or off.A.F.D. w;Press to set the receiver to automatically select the appropriate decoding mode for the inpu

45、t signal.ALT 8Press to change remote key function to activate those buttons with orange printing.ANT* (After pressing ALT) qhWhen you selected VCR, press to select output signal from antenna terminal TV signal or VCR program.AUDIO qkChanging the sound to Multiplex, Bilingual or Multi channel TV soun

46、d.AV MENU qaPress to display the menus of the VCR, satellite tuner, or DVD.AV ?/1 waPress to turn the selected audio and video components on or off.If you press the ?/1 switch at the same time, it will turn off the receiver and other Sony audio/video components (SYSTEM STANDBY).NoteThe function of t

47、he AV ?/1 switch changes automatically each time you select the input with the easy scroll key (3). Depending on the component, the above operation may not be possible or may operate differently than described.CLEAR* (After pressing ALT) qgWhen you selected CD player or DVD player, press if you made

48、 a mistake when you press the numeric buttons or press to return to the continuous play, etc.D.TUNING* qgWhen you selected tuner, press to enter direct tuning mode.DIRECT qlPress to select DIRECT function.DISC* 9When you selected CD player or video CD player, press to select a disc directly (multi-d

49、isc changer only).DISPLAY* qfPress to select the information displayed on the display of the receiver or TV screen.Display 2Select the input, macro list and command mode of the remote.Easy scroll key 3Move to select the input and press to enter the selection. The components are factory assigned to t

50、he inputs as follows. When you want to assign other components, program the remote following the steps on “Programming the remote” on page 9.* For details, see page 13.See the table on page 8 for information on the buttons that you can use to control each component.Note that the inputs are factory-s