Sony-STRDE1075-rec-sm 维修电路原理图.pdf

SERVICE MANUALFM STEREO/FM-AM RECEIVERUS ModelCanadian ModelSPECIFICATIONSSTR-DE1075Ver 1.2 2001.119-873-841-13Sony Corporation2001K0500-1Home Audio CompanyC 2001.11Published by Sony Engineering Corporation Continued 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 registeredtrademarks of Digital Theater Systems, Inc.AUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTALHARMONIC DISTORTION:With 8 ohm loads, both channels driven, from20 20,000 Hz; rated 100 watts per channelminimum RMS power, with no more than0.09 % total harmonic distortion from 250milliwatts to rated output (US model only).Amplifier sectionPOWER OUTPUTRated Power Output at Stereo Mode(8 ohms 20 Hz 20 kHz, THD 0.09 %)100 W + 100 WReference Power Output(8 ohms 1 kHz, THD 0.7 %)FRONT1):100 W + 100 WCENTER1): 100 WSURR1): 100 W + 100 WSURR BACK1): 100 W1) Depending on the sound field settings and thesource, there may be no sound output.Frequency responsePHONOCD/SACD, TAPE,MD/DAT, TV/SAT,DVD/LD, VIDEO 1, 2,3Inputs (Analog)PHONOMULTI CH IN (1, 2),CD/SACD, TAPE,MD/DAT, DVD/LD,TV/SAT, VIDEO 1, 2,32) INPUT SHORT.3) Weighted network, input level.RIAA equalization curve0.5 dB10 Hz 100 kHz3 dB (with sound field,equalizer, and bass boostbypassed)Sensitivity: 2.5 mVImpedance: 50 kilohmsS/N2): 86 dB (A, 2.5 mV3)Sensitivity: 150 mVImpedance: 50 kilohmsS/N2): 96 dB(A, 150 mV3)RadioFans.CN 收音机爱 好者资料库2STR-DE1075Inputs (Digital)DVD/LD (Coaxial)DVD/LD, TV/SAT,MD/DAT (Optical)OutputsTAPE, MD/DAT(REC OUT), VIDEO1, 2 (AUDIO OUT)FRONT L/R,CENTER,SURROUND L/R,SURROUND BACK,SUB WOOFERSensitivity: Impedance: 75 ohmsS/N: 100 dB(A, 20 kHz LPF)Sensitivity: Impedance: S/N: 100 dB(A, 20 kHz LPF)Voltage: 150 mVImpedance: 2.2 kilohmsVoltage: 2 VImpedance: 2.2 kilohmsEQBASS:99 Hz1.0 kHz(21 steps)MID:198 Hz10 kHz(37 steps)TREBLE:1.0 kHz10 kHz(23 steps)Gain levels:10 dB, 1 dB stepFM tuner sectionTuning range87.5 - 108.0 MHzAntenna terminals75 ohms, unbalancedSensitivityMono:18.3 dBf, 2.2 V/75 ohmsStereo:38.3 dBf, 22.5 V/75 ohmsUsable 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 response30 Hz 15 kHz,+0.5/2 dBSelectivity60 dB at 400 kHzAM tuner sectionTuning rangeWith 10-kHz tuning scale: 530 1.710 kHz4)With 9-kHz tuning scale:531 1.710 kHz4)AntennaLoop antennaUsable sensitivity50 dB/m (at 1,000 kHz or999 kHz)S/N54 dB (at 50 mV/m)Harmonic distortion0.5 % (50 mV/m,400 kHz)SelectivityAt 9 kHz:35 dBAt 10 kHz:40 dB4) You can change the AM tuning scale to 9 kHz or10 kHz. After tuning in any AM station, turn offthe receiver. Hold down TUNING and press?/1. All preset stations will be erased when youchange the tuning scale. To reset the scale to10 kHz (or 9 kHz), repeat the procedure.Video sectionInputsVideo:1 Vp-p, 75 ohmsS-video:Y: 1 Vp-p, 75 ohmsC: 0.286 Vp-p, 75 ohmsOutputsVideo:1 Vp-p, 75 ohmsS-video:Y: 1 Vp-p, 75 ohmsC: 0.286 Vp-p, 75 ohmsGeneralPower requirements120 V AC, 60 HzPower consumption300 W (US model)375 VA (Canadian model)AC outlets2 switched, 120 W/1ADimensions430 161 401 mmincluding projecting partsand controlsMass (Approx.)16.0 kgSupplied accessoriesFM wire antenna (1)AM loop antenna (1)Audio/video/control S connecting cord (1)Control S connecting cord (1)Remote commander RM-PP505L (1)R6 (size-AA) batteries (2)Design and specifications are subject to changewithout notice.RadioFans.CN 收音机爱 好者资料库3STR-DE1075Fig. A.Using an AC voltmeter to check AC leakage.1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 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 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.Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by heat.SAFETY CHECK-OUTAfter correcting the original 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 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 a VOMor battery-operated AC voltmeter. The “limit” indication is 0.75V, so analog meters must have 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)TABLE OF CONTENTS1.SERVICING NOTES.42.GENERAL.53.DISASSEMBLY3-1.Disassembly Flow .63-2.Case .73-3.S-VIDEO board, VIDEO Board, Tuner.73-4.VIDEO AU Board .83-5.DIGITAL Board .83-6.MAIN Board .94.TEST MODE. 105.ELECTRICAL ADJUSTMENT. 116.DIAGRAMS6-1.Block Diagram TUNER/VIDEO INPUT Section . 136-2.Block Diagram AUDIO DSP Section . 146-3.Block Diagram AUDIO CONTROL Section . 156-4.Block Diagram POWER AMP Section . 166-5.Block Diagram DISPLAY/KEY CONTROL Section . 176-6.Block Diagram POWER SUPPLY Section . 186-7.Note for Printed Wiring Boardsand Schematic Diagrams . 196-8.Schematic Diagram DIGITAL Board (1/5) . 216-9.Schematic Diagram DIGITAL Board (2/5) . 226-10. Schematic Diagram DIGITAL Board (3/5) . 236-11. Schematic Diagram DIGITAL Board (4/5) . 246-12. Schematic Diagram DIGITAL Board (5/5) . 256-13. Printed Wiring Board DIGITAL Board (Component Side) . 266-14. Printed Wiring Board DIGITAL Board (Conductor Side) . 276-15. Printed Wiring Board VIDEO Board . 286-16. Schematic Diagram VIDEO Board . 296-17. Printed Wiring Boards S-VIDEO/VIDEO AU Boards . 306-18. Schematic Diagram S-VIDEO/VIDEO AU Boards . 316-19. Printed Wiring Board MAIN Board . 326-20. Schematic Diagram MAIN Board (1/3) . 336-21. Schematic Diagram MAIN Board (2/3) . 346-22. Schematic Diagram MAIN Board (3/3) . 356-23. Printed Wiring Board BIAS Board . 366-24. Schematic Diagram BIAS Board . 376-25. Printed Wiring Board DISP Board . 386-26. Schematic Diagram DISP Board . 396-27. Printed Wiring Boards H.P/JOG/POWER/SP/VIDEO 3/VOL Boards . 406-28. Schematic Diagram H.P/JOG/POWER/SP/VIDEO 3/VOL Boards . 416-29. Printed Wiring Boards POWER SUPPLY Section . 426-30. Schematic Diagram POWER SUPPLY Section . 436-31. IC Pin Function Description . 497.EXPLODED VIEWS7-1.Case Section . 617-2.Front Panel Section . 627-3.Chassis Section-1 . 637-4.Chassis Section-2 . 648.ELECTRICAL PARTS LIST. 65Ver 1.24STR-DE1075SERVICE POSITIONIn checking the DIGITAL board, prepare jig (extension cable J-2501-208-A: 200 mm 21 core).SECTION 1SERVICING NOTESMAIN boardDIGITAL boardConnect jig (extension cable J-2501-208-A)to the MAIN board (CN806, 807) andDIGITAL board (CN1102, 1103).5STR-DE1075SECTION 2GENERALThis section is extracted frominstruction manual.LOCATION OF CONTROLS Front Panel 2ND ROOM wf (25)6.1CH DECODING wa (29)6.1CH DECODING indicator ql(29)AM eh (36)CINEMA STUDIO EX AC qh(26)DIGITAL CONCERT HALL A,B w; (27)Cursor buttons (/) ef (17,31, 33, 34, 38, 40)Digital Cinema Sound indicatorqk (26)DIMMER 5 (25)DIMMER indicator 8 (25)Display qj (30)DISPLAY 4 (25)ENTER ed (38)EQ 0 (34)EQUALIZER wk (34)FM ej (36)FM MODE ek (36)FUNCTION wg (22, 23, 3638)INPUT MODE wj (23)IR receptor 6Jog dial eg (17, 31, 33, 34, 38,40)LEVEL qs (33)MASTER VOLUME wd (21, 24)MEMORY r; (37)MODE wh (23)MULTI /2CH A. DIRECT wl(24, 28)MULTI CHANNEL DECODINGindicator qdMUTING ws (24)NAME qg (38)ON SCREEN ra (8)PHONES jack 3 (24)PRESET TUNING +/ 7 (37)SET UP qf (17, 40)SHIFT el (37)SOUND FIELD 2CH e; (28)SOUND FIELD A.F.D. es (28)SOUND FIELD MODE ea (26,35)SPEAKERS switch 2 (24)SURR qa (31)TUNING +/ 9 (36)VIDEO 3 INPUT jacks rs (8)?/1 (power) 1 (16, 21, 22, 35)wfwhwgwkeaeswle;wj123qh4qs8590qaqdqfqgqjqkqlw;wa wswd67edrsejekelr;efegehra Rear Panel 712 3 456890 qaqsqdqfqhqgqj qkql1 DIGITAL jack2 ANTENNA terminal3 CONTROL A1 II jack4 MONITOR jack5 TV/SAT jack6 DVD/LD jack7 VIDEO 2 jack8 VIDEO 1 jack9 SPEAKERS terminal0 AUDIO OUT jackqa INPEDANCE SELECTORqs MULTI CH IN 2 jackqd MULTI CH IN 1 jackqf PHONO jackqg CD/SACD jackqh MD/DAT jackqj TAPE jackqk 2ND ROOM jackql AC OUTLETSTR-DE10756 This set can be disassembled in the order shown below.3-1.DISASSEMBLY FLOWSECTION 3DISASSEMBLYSET3-3. S-VIDEO BOARD, VIDEO BOARD, TUNER(Page 7)3-2. CASE(Page 7)3-5. DIGITAL BOARD(Page 8)3-6. MAIN BOARD(Page 9)3-4. VIDEO AU BOARD(Page 8)STR-DE10757Note: Follow the disassembly procedure in the numerical order given.3-2.CASE1two screws (case 3 TP2)1two screws (case 3 TP2)3case221two screws (case 3 TP2)3-3.S-VIDEO BOARD, VIDEO BOARD, TUNER2connector(CN306)1connector(CN753)5S-VIDEO board,VIDEO board7three screws (BVTP3 8)4six screws (BVTP3 8)3wire (flat type) (21 core)(CN303)6wire (flat type) (15 core)(CN1)8tunerSTR-DE107583-4.VIDEO AU BOARD3-5.DIGITAL BOARD2two screws (BVTP3 8)3VIDEO AU board1wire (flat type) (9 core)(CN201)3two screws (BVTP3 8)2connector(CN1107)2connector(CN1106)2connector(CN1108)1wire (flat type) (29 core)(CN1101)6DIGITAL board5two connectors(CN1102, 1103)4five screws (BVTP3 8)STR-DE107593-6.MAIN BOARD3screw (BVTP3 8)53screw(BVTP3 8)4eight screws(BVTP3 8 TYPE 2 IT-3)2two screws (BVTP3 8)2two screws (BVTP3 8)1connector(CN803)1connector(CN802)1connector(CN805)1connector(CN804)8two screws(BVTP3 8)9MAIN board7twelve screws(transistor)6connector(CN810)6six connectors(CN501, 551, 451, 401, 601, 651)10STR-DE1075SECTION 4TEST MODEFactory Set ModeAll preset contents are reset to the default setting.Procedure:While pressing the SET UP and DIMMER buttons, press the?/1button to turn on the main power. The message “TUNERFACTORY PRESET” appears and the present contents are resetto the default values.All Clear ModeAll preset contents are cleared when this mode is activated. Usethis mode before returning the product to clients upon completionof repair.Procedure:While pressing the A.F.D. and SOUND FIELD MODE buttons,press the?/1button to turn on the main power. The message“MEMORY CLEAREDd” appears and the memories are reset tothe default values.Sound Field Clear ModeThe preset sound field is cleared when this mode is activated. Usethis mode before returning the product to clients upon completionof repair.Procedure:While pressing the SOUND FIELD MODE button, press the?/1button to turn on the main power. The message “S.FInitialize” appears and initialization is performed.Fluorescent Indicator Tube Test ModeAll fluorescent segments are tested. When this test is activated, allsegments turn on at the same time, then each segment turns on oneafter another.Procedure:1.While pressing the A.F.D. and DIMMER buttons, pressthe?/1button to turn on the main power.2.All segments turn on at the same time, then each segment turnson press the A.F.D. button.Demonstration ModeProcedure:While pressing the SET UP button simultaneously, press the?/1 button to turn on the main power. The set enters the DEMOmode.Wait a while, then the demonstration starts. If the?/1button ispressed often the demonstration has started, the power is turnedoff, and the demonstration resumes if the?/1button is pressedagain.AM Channel Step 9 kHz/10 kHz Selection ModeEither the 9 kHz step or 10 kHz step can be selected for the AMchannel step.Procedure:1.Set the FUNCTION to AM. Press the?/1button to turn offthe main power.2.While depressing the PRESET TUNING + button, press the?/1button to turn on the main power.3.Either the message “AM 9kHz Step” or “AM 10kHz Step”appears. Select the desired step.Version ModeWhen this mode is used, the microprocessor version number isdisplayed.Procedure:Press three buttons of SHIFT, SOUND FIELD MODE andTUNING - simultaneously. The microprocessor version numberappears.DSP Test ModeThis test is conducted to check if the DSP functions normally.Procedure:1.While pressing the DISPLAYand TUNING + buttons, presstheI/1button to turn on the main power.2.If the DSP is normal, the message “RWS 1:000 2:000 SYNC”appears.3.If the DSP is abnormal, characters other than 0 appears at the000 part of the message.Note: RWS characters of the message correspond to the digits of 000.RW means read/write from the system controller (IC1703) to theDSP, and S means the communication between DSP and S-RAM(IC1502, IC1602). For example, if the writing of the systemcontroller failed, 0*0 (* is a character other than 0) appears. Also,1 and 2 indicates DSP1 (IC1501) and DSP2 (IC1601), and 1:000and 2:000 show the test results of DSP1 and DSP2 respectively.Ver 1.211STR-DE1075SECTION 5ELECTRICAL ADJUSTMENTOSD AdjustmentConnectionProcedure:1.Short the CN306 pin 4 on the VIDEO board to the GND.2.Connect a frequency counter to the CN306 pin 2 on theVIDEO board.3.Press the I/1button to turn on the main power.4.Press the SET UP button.5.Press the button to display “OSD H.POSITION”.8.Adjust the CT302 so that the frequency counter reading is3.57954 MHz.9.Press the I/1button to turn off the main power.10. Connect a frequency counter to the CN306 pin 1 on theVIDEO board.11. Press the I/1button to turn on the main power.12. Press the SET UP button.13. Press the button to display “OSD V.POSITION”.14. Adjust the CT303 so that the frequency counter reading is 7.20MHz.Adjustment and Connection Loacation:VIDEO boardCN306 pin 1 or pin 2+frequency counterIC304IC310CT303CT302CN30614Ver 1.2 VIDEO BOARD (Component Side) 12STR-DBE1075MEMOSTR-DE10751313793513V3V2. INTVLDV1. IN1041462151SW2SW3SW1SW4SW5V1.OUTM.OUT793513V3V2. INTVLDV1. IN1041462151SW2SW3SW1SW4SW5V1.OUTM.OUT151391135712141046ANALOGSWITCHSERIALINPUTCONTROLBUFFERQ304,Q305D304D303D751D750X30214MHzB(Page 17)DATA, CLKFMAM10L CH12R CH1CE13MUTING2DATA3CLOCK14TUNED4DO15STEREOS LATMUTINGDATACLKTUNEDDOSTEREOFM/AMTUNER UNIT8YOUT6COUT7VOUT4CIN2YIN3VINVIDEO BUFFERIC30527YOUT26COUT25VOUT15 EXD16 XD2CIN1YIN22SCLK23SIN24CS3VIN8EXSOSD DRIVERIC307CLOCKIC304891110CLKDATALAT10510610729 VIDEO SW130 VIDEO SW231 VIDEO SW332 VIDEO SW4SYSTEMCONTROLLERIC1703(1/6)J298 (1/2)VIDEO 3INPUTVIDEOTV/SAT IN VID