Sony-STRDE985-rec-sm 维修电路原理图.pdf

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1、1SERVICE MANUALFM STEREO/FM-AM RECEIVERAUDIO 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 (Mod

2、els of areacode US only).Amplifier sectionPOWER OUTPUTModels of area code US, CNDRated Power Output at Stereo Mode(8 ohms 20 Hz 20 kHz, THD 0.09 %)100 W + 100 W 2)Reference Power Output(8 ohms 1 kHz, THD 0.7 %)FRONT 1) :100 W/chCENTER 1) :100 WSURR 1) :100 W/chSURR BACK 1) :100 W (DE985)Models of ar

3、ea code E23, MXRated Power Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)100 W + 100 W 2)SPECIFICATIONSReference Power Output 2)(8 ohms 1 kHz, THD 10 %)FRONT 1) :120 W/chCENTER 1) :120 WSURR 1) :120 W/ch1) Depending on the sound field settings and thesource, there may be no sound output.2) Measured

4、under the following conditions:Area codePower requirementsE23240 V AC, 50 HzUS, CND, MX120 V AC, 60 HzFrequency responsePHONORIAA equalization curve0.5 dBMULTI CH IN (1, 2) 5),10 Hz 70 kHzCD/SACD, TAPE 5),+0.5/2 dB (with soundMD/DAT 5), MD/TAPE 6),field and equalizer bypassed)TV/SAT, DVD/LD,VIDEO 1,

5、 2, 3Ver 1.2 2002. 119-874-060-032002K0400-1 2002. 11Sony CorporationHome Audio CompanyPublished by Sony Engineering Corporation Continued on next page US ModelCanadian ModelSTR-DE885/DE985E ModelSTR-DE885Photo: STR-DE885This receiver incorporates Dolby* Digital and ProLogic Surround and the DTS* Di

6、gital SurroundSystem.*Manufactured under license from DolbyLaboratories.“Dolby”, “Pro Logic” and the double-D symbol aretrademarks of Dolby Laboratories.* “DTS”, “ES” and “DTS Digital Surround” areregistered trademarks of Digital Theater Systems,Inc.STR-DE885/DE985RadioFans.CN 收音机爱 好者资料库2STR-DE885/D

7、E985Inputs (Analog)PHONOSensitivity: 4 mVImpedance: 50 kilohmsS/N 3) :86 dB (A, 4 mV 4)MULTI CH IN (1, 2) 5),Sensitivity: 250 mVCD/SACD, TAPE 5),Impedance: 50 kilohmsMD/DAT 5), MD/TAPE 6),S/N 3) : 96 dB (A, 250 mV 4)TV/SAT, DVD/LD,VIDEO 1, 2, 33) INPUT SHORT (with sound field , equalizer and bass bo

8、ostbypassed).4) Weighted network, input level.5) STR-DE9856) STR-DE885Inputs (Digital)DVD/LD (Coaxial)Sensitivity: Impedance: 75 ohmsS/N: 100 dB(A, 20 kHz LPF)CD/SACD, TV/SAT,Sensitivity: MD/DAT 5), MD/TAPE 6),Impedance: VIDEO 3 (Optical)S/N: 100 dB(A, 20 kHz LPF)Outputs (Analog)MD/DAT 5),Voltage: 2

9、50 mVMD/TAPE 6) (OUT),Impedance: 10 kilohmsVIDEO1, 2 (AUDIO OUT)SUB WOOFER,Voltage: 2 VSURR BACK,Impedance: 1 kilohms2ND ROOM 5)Outputs (Digital)MD/TAPE (Optical)Sensitivity: EQBASS:99 Hz 1.0 kHz(21 steps)MID:198 Hz 10 kHz(37 steps)TREBLE:1.0 kHz 10 kHz(23 steps)Gain levels:10 dB, 1 dB stepFM tuner

10、sectionTuning range87.5 108.0 MHzAntenna terminals75 ohms, unbalancedIntermediate frequency10.7 MHzSensitivityMono: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

11、1 kHzFrequency response30 Hz 15 kHz,+0.5/2 dBSelectivity60 dB at 400 kHzAM tuner sectionTuning rangeModels of area code US, CNDWith 10-kHz tuning scale: 530 1710 kHz 7)With 9-kHz tuning scale:531 1710 kHz 7)Models of area code E23, MXWith 10-kHz tuning scale: 530 1610 kHz 7)With 9-kHz tuning scale:5

12、31 1602 kHz 7)AntennaLoop antennaIntermediate Frequency450 kHzUsable sensitivity50 dB/m (at 1,000 kHz or999 kHz)S/N54 dB (at 50 mV/m)Harmonic distortion0.5 % (50 mV/m, 400 Hz)SelectivityAt 9 kHz:35 dBAt 10 kHz:40 dB7) You can change the AM tuning scale to 9 kHz or10 kHz. After tuning in any AM stati

13、on, turn offthe receiver. Hold down PRESET TUNING + andpress ?/1 . All preset stations will be erased whenyou change 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 ohmsComponent Video:

14、Y: 1 Vp-p, 75 ohmsPB B-Y: 0.7 Vp-p, 75 ohmsPR R-Y: 0.7 Vp-p, 75 ohmsOutputsVideo:1 Vp-p, 75 ohmsS-video:Y: 1 Vp-p, 75 ohmsC: 0.286 Vp-p, 75 ohmsComponent Video:Y: 1 Vp-p, 75 ohmsPB B-Y: 0.7 Vp-p, 75 ohmsPR R-Y: 0.7 Vp-p, 75 ohmsGeneralPower requirementsArea codePower requirementsUS, CND, MX120 V AC,

15、 60 HzE23120/220/240 V AC, 50/60 HzPower consumptionArea codePower consumptionUSSTR-DE985: 265 WSTR-DE885: 210 WCNDSTR-DE985: 360 VASTR-DE885: 300 VAMX210 WE23230 WPower consumption (during standby mode)0.5 W (when “POWER SAVE”in the CUSTOMIZE menu isset to “ON”).AC outletsArea codeAC outletsUS, CND

16、2 switched, 120 W/1A MAXE23, MX1 switched, 100 W MAXDimensions430 157.5 369 mm(16 7/8 6 2/8 14 4/8 inches)including projecting partsand controlsMass (Approx.)9.5 kg (20 lb 16 oz)Supplied accessoriesFM wire antenna (1)AM loop antenna (1)Remote commander (1) RM-PG411 (STR-DE985) RM-PP411 (STR-DE885)R6

17、 (size-AA) batteries (2)Audio/video/control S cord (1)Monaural mini-plug cord (1)Design and specifications are subject to changewithout notice. AbbreviationCND: Canadian modelE23: AC 120/220/240V area in E modelMX: Mexican modelRadioFans.CN 收音机爱 好者资料库3STR-DE885/DE985MODEL IDENTIFICATION BACK PANEL P

18、art No.1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundSAFETY 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 e

19、xposed 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 microampers.).Leakage current can be measured by

20、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 r

21、esistor by means of aVOM or battery-operated AC voltmeter. The “limit” indica-tion is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-amples of a passive VOM that is suitable. Nearly all batteryoperated digital multimeters that have a 2 V A

22、C range are suit-able. (See Fig. A)SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN S

23、UPPLEMENTS PUBLISHED BY SONY.ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONTCRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PICES SONYDONT LES NUMROS SONT DONNS DANS C

24、E MANUEL OUDANS LES SUPPLMENTS PUBLIS PAR SONY.Area codePart No.DE885: US4-239-124-0sDE885: CND4-239-124-1sDE885: E234-239-124-5sDE885: MX4-239-124-9sDE985: US4-239-222-0sDE985: CND4-239-222-1s4TABLE OF CONTENTS1. GENERALMain unit . 5Remote button description. 62. DISASSEMBLY2-1. Case . 72-2. Front

25、Panel Section . 82-3. Headphone Board, Opt3 Board, Video3 Board. 82-4. Back Panel Section. 92-5. Digital Board. 92-6. Standby Board .102-7. Main Board .103. TEST MODE. 114. DIAGRAMS4-1. IC Pin Descriptions .134-2. Circuit Boards Location . 214-3. Printed Wiring Boards Main Section . 224-4. Schematic

26、 Diagram Main Section (1/3) . 234-5. Schematic Diagram Main Section (2/3) . 244-6. Schematic Diagram Main Section (3/3) . 254-7. Printed Wiring Board Digital Section (1/2) . 264-8. Printed Wiring Boards Digital Section (2/2) .274-9. Schematic Diagram Digital Section (1/4) .284-10. Schematic Diagram

27、Digital Section (2/4) .294-11. Schematic Diagram Digital Section (3/4) .304-12. Schematic Diagram Digital Section (4/4) .314-13. Printed Wiring Board Speaker Section .324-14. Schematic Diagram Speaker Section . 334-15. Printed Wiring Boards Display Section . 344-16. Schematic Diagram Display Section

28、 .354-17. Printed Wiring Board Video Section .364-18. Schematic Diagram Video Section . 374-19. Printed Wiring Boards S-video Section . 384-20. Schematic Diagram S-video Section .394-21. Printed Wiring Board Component Section . 404-22. Schematic Diagram Component Section . 414-23. Printed Wiring Boa

29、rds Power Section . 424-24. Schematic Diagram Power Section . 434-25. IC Block Diagrams. 445. EXPLODED VIEWS5-1. Case Section . 495-2. Front Panel Section .505-3. Chassis Section-1 . 515-4. Chassis Section-2 . 526. ELECTRICAL PARTS LIST. 53STR-DE885/DE9855STR-DE885/DE985SECTION 1GENERALThis section

30、is extractedfrom instruction manual.List of Button Locations and Reference Pages5GBList of Button Locations and Reference PagesMain unitHow to use this pageUse this page to find the location of buttons that arementioned in the text. Illustration numberrCUSTOMIZE qd (42, 44, 65)RRName of button/partR

31、eference pageALPHABETICAL ORDER0 92CH wl (31, 32)2ND ROOM (STR-DE985 only)wd (28)A DA. DEC ea (29, 31)AM eg (40)CINEMA STUDIO EX A, B, Cqf (30)CUSTOMIZE qd (42, 44, 65)Digital Cinema Studio (indicator)qj (29)DIGITAL CONCERT HALL A,B qk (31)DIMMER r; (28)DISPLAY 4 (28, 60)Display qg (28)E IENTER es (

32、42)EQ 8 (38, 64)EQUALIZER wj (38)FM eh (40)FM MODE ej (40)FUNCTION wf (26, 59)INPUT MODE wh (26)IR (receptor) 5 (48, 60)J NJog dial ef (20, 35, 37, 38, 42,44, 63)LEVEL q; (25, 37, 63)MASTER VOLUME ws (25, 58)MEMORY el (41)MODE (FUNCTION) wg (26)MODE (SOUND FIELD) e; (30,31, 59)MULTI/2CH ANALOG DIREC

33、Twk (27)MULTI CHANNEL DECODING(indicator) qa (27)MUTING wa (27, 58)O SON SCREEN (STR-DE985 only)ra (10)PHONES (jack) 3 (27, 59)PRESET TUNING +/ 6 (41,62)SB DEC (indicator) qh (33)SET UP qs (20, 65)SHIFT ek (41)SPEAKERS A/B 2 (17, 27, 35,58)SURR 9 (35, 63)SURR BACK DECODING w;(33)T ZTUNING +/ 7 (40)V

34、IDEO 3 DIGITAL INPUT(jack) rd (11)VIDEO 3 INPUT (jacks) rs (10)VIDEO SELECT INDICATORql (26)BUTTON DESCRIPTIONS?/1 (power) 1 (19, 25, 39, 62)/ ed (20, 35, 37, 38, 42, 44,63)123456 7 89 q;qaqsqdqfqgqhqjqkqlw;wawswfwdwgwhwjwkwle;eaesedefegehejekelr;rarsrd6STR-DE885/DE98548USYou can use the remote RM-P

35、G411 (STR-DE985 only) or RM-PP411 (STR-DE885 only)to operate the components in your system.Before you use yourremoteInserting batteries into theremoteInsert R6 (size-AA) batteries with the + and properly oriented in the battery compartment.When using the remote, point it at the remotesensor on the r

36、eceiver.TipUnder normal conditions, the batteries should last forabout 6 months. When the remote no longer operatesthe receiver, replace all batteries with new ones.Notes Do not leave the remote in an extremely hot orhumid place. Do not use a new battery with an old one. Do not expose the remote sen

37、sor to direct sunlightor lighting apparatuses. Doing so may cause amalfunction. If you dont use the remote for an extended periodof time, remove the batteries to avoid possibledamage from battery leakage and corrosion.Remote buttondescriptionVIDEO1VIDEO2USE MODESYSTEM STANDBYSLEEPAV1AV22NDM2TV ?/1AV

38、 ?/1VIDEO3DVD/LDTV/SATTAPEMD/DATCD/SACDPHONOM1TIMERMULTI CHSOURCE?/1PVIDEO1VIDEO2USE MODESYSTEM STANDBYSLEEPAV1AV2TV ?/1AV ?/1VIDEO3DVD/LDTV/SATMD/TAPECD/SACDTUNERPHONOAUXMULTI CHSOURCE?/1PNXmM.-SHIFTTOP MENU/GUIDEAV MENUMUTINGMASTERVOLDISPLAYTV VOLTV CHWIDEON SCREENTV/VIDEOMAINMENURETURN/EXITD.TUNI

39、NGDISCALTANTCLEARSEARCH MODETESTTONEPRESET1234567890/1010/1112AUTO DECSUBTITLEENTERMODEAUDIOSWAP/ANGLEJUMP/TIMEPRESET/CH/D.SKIPMPX/DUALANALOGDIRECT2CHSOUND FIELDxOfFGgfFGgOperations Using the Remote RM-PG411 and RM-PP411The tables below show the settings of eachbutton common to both remote RM-PG411

40、andRM-PP411.RemoteOperationsFunctionButton?/1ReceiverTurns the receiver on or off.SLEEPReceiverActivates the sleepfunction and the durationwhich the receiver turnsoff automatically.ENTER/EXECUTERM-PG411 RM-PP411RM-PG411 and RM-PP4117STR-DE885/DE985Note : This set can be disassemble according to the

41、following sequence.SECTION 2DISASSEMBLY2-1. CASENote : Follow the disassembly procedure in the numerical order given.2-1.CASE(Page 7)2-2.FRONT PANEL SECTION(Page 8)2-4.BACK PANEL SECTION(Page 9)SET2-3.HEADPHONE BOARD,OPT3 BOARD,VIDEO3 BOARD(Page 8)2-5.DIGITAL BOARD(Page 9)2-6.STANDBY BOARD(Page 10)2

42、-7.MAIN BOARD(Page 10)1two screws(case 3 TP2)2two screws(case 3 TP2)3two screws(case 3 TP2)4case8STR-DE885/DE9852-2. FRONT PANEL SECTION2-3. HEADPHONE BOARD, OPT3 BOARD, VIDEO3 BOARD8front panel section6two screws(BVTP 3x8)1CNS5053CNP5084CNP2055CNP2102CNP7017five screws(BVTP 3x8)1two screws(BVTP 2.6

43、x8)3two screws(BVTP 2.6x8)3two screws(BVTP 2.6x8)2HEADPHONE board4OPT3 boardfront panel section4VIDEO3 board9STR-DE885/DE9852-5. DIGITAL BOARD2-4. BACK PANEL SECTION1CNS5082CNS5093CNP9014CN808(DE985)6CNP8127CNP8148CNP2109CNP2070CNP2055CN807qdtwo screws(BVTP 3x8)qafive screws(BVTP 3x8)qffour screws(B

44、VTP 3x8)qseleven screws(BVTP 3x8)qgback panel2CNP5087CNS5028CNS5013CNP5094CNP5065CNP5071CNS505qabracket (DIGITAL)9DIGITAL board6screw (BVTP 3x8)0screw (BVTP 3x8)10STR-DE885/DE9852-7. MAIN BOARD2-6. STANDBY BOARD5STANDBY board1CNP8132CNP9053CNP8154three screws (BVTP 3x8)8MAIN board1CNP7012CNP8013CNP8

45、024two screws (BVTP 3x6)5two screws (BVTP 3x6)6two screws (BVTP 3x8)7two screws (BVTP 3x8)11STR-DE885/DE985SECTION 3TEST MODEFACTORY PRESET MODE* All preset contents are reset to the default setting.* Procedure:While depressing the SET UP and the DIMMER buttons simul-taneously, press the power ?/1 b

46、utton to turn on the main power.The message “TUNER FACTORY PRESET” appears and thepresent contents are reset to the default values.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

47、main power.While depressing the PRESET TUNING+ button, press the power. ?/1 button to turn on the main power. Either the message 9 kSTEP or 10 k STEP appears. Select the desired step.FLUORESCENT INDICATOR TUBE TEST MODE* All fluorescent segments are tested. When this test is activated,all segments t

48、urn on at the same time, then each segment turnson one after another.* Procedure:While depressing the A.DEC and the DIMMER buttons simul-taneously, press the power ?/1 button to turn on the main power.1.All segments turn on.VIDEO 2, SETUP, DVD/LD, MULTI CHANNEL DECODING(blue) and MULTI/2CH ANALOG DI

49、RECT LEDs turn on.2.Press the A.DEC or the DIMMER button, confirm display.(Display)SOUND FIELD 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 MODE bu

50、tton, press thepower ?/1 button to turn on the main power. The message“S.F Initialize” appears and initialization is performed.VERSION DISPLAY MODE* The version is displayed.* Procedure:While depressing the MUTING and the DIMMER buttonssimultaneously, press the power ?/1 button to turn on the mainpo