Sony-STD777ES-tun-sm 维修电路原理图.pdf

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1、ST-D777ESAEP ModelUK ModelSERVICE MANUALDAB/FM/AM TUNERSPECIFICATIONSDAB tuner sectionFrequency range174.928 (5A) - 239.200 (13F) MHz1452.960 (L1) - 1490.624 (L23) MHzSensitivity6.9 V/28 dBfSignal-to-noise ratio100 dBTHD+N0.005 % (1 kHz)Channel separation90 dB (1 kHz)Selectivity35 dB (at adjacent ch

2、annel)Frequency response+0.2/-0.3 dB (5 Hz - 20 kHz)DA converterPulse D/A S-TACT128Digital filterVC24 (only for DAB analog output)Digital outputTerminals: Coaxial and OpticalSampling frequncy: 48 kHzRDI outputOpticalAerial terminal75 , F femaleFM tuner sectionFrequency range87.5 - 108.0 MHzSensitivi

3、tyat 40 kHz derivationat 26 dB quieting (mono) 0.9 V/10.3 dBfat 46 dB quieting (stereo) 23 V/38.5 dBfSignal-to-noise ratioat 40 kHz derivation80 dB (mono), 76 dB (stereo)THD+N1 kHz, 40 kHz derivationWIDE0.035 % (mono), 0.045 % (stereo)Channel separation50 dB (1 kHz) WIDESelectivityat 400 kHzWIDE 85

4、dBNARROW 90 dBFrequency respose+0.2/-0.3 dB (30 Hz - 15 kHz)Aerial terminal75, IEC maleAM tuner sectionFrequency rangeMW: 522 - 1,611 kHz (9 kHz step)LW: 144 - 288 kHz(1 kHz step: Manual tuning)(3 kHz step: Automatic tuning)Sensitivity(with AM loop aerial)MW: 200 V/mLW: 700 V/mSignal-to-noise ratioM

5、W: 54 dB (50 mV/m, 999 kHz)LW: 50 dB (50 mV/m, 216 kHz)Harmonic distortion0.3 %Sensitivity50 dBAerial terminalPush leverGeneralPower requirements230 V, AC 50/60 HzPower consumption20 WDimensions430 97.5 374 mm (w/h/d)Weight6.2 kgRemote control capabilityIRStation preset capacitymax. 99 (DAB, FM and

6、AM total)Supplied accessories Audio cord (1) AM loop aerial (1) FM wire aerial (1) DAB wire aerial (1) Remote commander (1) R6 (size AA) baatteries (2)Design and specifications are subject to change without notice.RadioFans.CN 收音机爱 好者资料库2TABLE OF CONTENTSSAFETY-RELATED COMPONENT WARNING!COMPONENTS I

7、DENTIFIED 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.1.GENERAL32.TEST MODE 123.ELECTRICAL ADJUSTMENTS 14

8、4.DIAGRAMS 174-1. BLOCK DIAGRAM 174-2. CIRCUIT BOARDS LOCATION 184-3. PRINTED WIRING BOARD MAIN SECTION 194-4. SCHEMATIC DIAGRAM MAIN SECTION (1/4) 204-5. SCHEMATIC DIAGRAM MAIN SECTION (2/4) 214-6. SCHEMATIC DIAGRAM MAIN SECTION (3/4) 224-7. SCHEMATIC DIAGRAM MAIN SECTION (4/4) 234-8. SCHEMATIC DIA

9、GRAM DISPLAY SECTION 244-9. PRINTED WIRING BOARD DISPLAY SECTION 254-10. SCHEMATIC DIAGRAM POWER SECTION 264-11. PRINTED WIRING BOARD POWER SECTION 274-12. IC PIN FUNCTION DESCRIPTION 284-13. IC BLOCK DIAGRAMS 315.EXPLODED VIEWS 345-1. FRONT PANEL SECTION 345-2. MAIN SECTION 356.ELECTRICAL PARTS LIS

10、T 36SERVICE POSITION The service position of the MAIN board is the state in which the back-panel is removed and the MAIN board is swing-raised by 90 . (An insulating material is necessary to prevent the machine from shorting.)Insulating materialMAIN boardRadioFans.CN 收音机爱 好者资料库3SECTION 1GENERALFRONT

11、 PANELREAR PANEL123487659qdqa0qsqfqg1 2 3456781?/1 switch2DAB button3FM button4AM button5TUNING MODE button6PTY button7TUNING/SELECT button8MENU button9ENTER button0MEMORY buttonqaCHARACTER buttonqsMONO/SC buttonqdDISPLAY MODE buttonqfEON buttonqgDISPLAY button1DAB RDI OUT OPTICAL jack2DAB DIGITAL O

12、UT COAXIAL jack3DAB DIGITAL OUT OPTICAL jack4ANTENNA DAB jack5ANTENNA FM jack6ANTENNA AM terminal7ANALOG OUT jack8POWER cord4This section is extractedfrom instruction manual.567891011122. Entering the Factory Preset (In case perform just to write memory of the Factory Preset.)1.Turn OFF the power.2.

13、While pressing ENTER and DAB together, turn ON POWER .3. Microprocessor Version Display Mode1.Turn off the power.2.While pressing MENU and AM together, turn ON POWER .3.The version and the date of the microprocessor are displayed.4.Press the ENTER button to end this mode.SECTION 2TEST MODEDABFMAM1.

14、Display Tube Check and KEY Check mode1.Turn OFF the power.2.While pressing DISPLAY and MENU together, turn ON POWER .3.Display tube all lit.4.Each time the button is pressed, the key number is counted down. After all the 14 buttons are pressed, “OK” appears.When the DAB, FM or AM button is pressed o

15、nly, the following display appears.5.The two eighth notes are moved from the left to the right by turning the TUNING/SELECT dial clockwise. The notes are moved fromthe right to the left by turning the dial counterclockwise.13 DAB error rate displayPress DAB and CHARACTER at the same time under the D

16、ABtuned condition. (When the software version is 1.04, press DABten times while CHARACTER is kept pressed.)The bit error rate is displayed.1: PIC error rate2: MSC error rate3: Bit rate4: In case of audio serviceF : 48 kHz samplingH : 24 kHz samplingIn case of data serviceS : stream dataF : FIDCP : p

17、ocket data5: DAB decoder status informationCheck the contents in binary notation.Bit 7: not usedBit 6: 1 when AFC is converged.Bits 5 to 3 : The number of CRC errors during MPEGdecodeBit 2: 1 when initial pulling-in is complete.Bits 1, 0: Contents of DAB frame length judgment Audio information displ

18、ay (DAB only)Press DISPLAY and ENTER at the same time under the DAB tunedcondition.Audio information for service that is selected at present is displayed.1: Bit rate2: Audio contentsstereo= stereo broadcastjoint= joint stereo broadcastdual= dual channel broadcastsingle= single channel broadcaststrea

19、m = stream data broadcastFIDC= FIDC data broadcastPacket= packet data broadcast3: Sampling frequency4: Protection level5: Transmission mode2 5 6 k b p s4 8 k H zs t e r e oP L v 2 m o d e 113452F : 0 . 0 0 E + 0 0M : 0 . 0 0 E + 0 02 5 6 FS T : C 515423Bit 10011Frame length96 ms48 ms24 msJudgment im

20、possibleBit 0100114FM Discriminator ADJUSTMENT(NULL and MONO Distortion Adjustment)Setting:Procedure:1.Tune the set to 98 MHz.2.Adjust IFT202 for 0V reading on the digital voltmeter. NULL3.Adjust IFT203 for a minimum reading on the distortion meter. MONO Distortion (THD)4.Repeat the adjustments of 2

21、 and 3 several times.Note : When replacing the ceramic filter, perform this alignment.SECTION 3ELECTRICAL ADJUSTMENTSPrecautions in RepairingIf the front end unit fails, it is difficult to repair the inner circuits, soreplace the entire front end unit.Standard Setting of FM Stereo RF Signal Generato

22、r.FM SECTION0dB = 1VsetFM RF SSG1kHzhighpassfilterdistortion meterFM ANTENNA (75)LINE OUTSTEREO STANDARD SIGNALMONAURALSTANDARD SIGNALCarrier frequency : 98MHzModulation : Audio 1kHz Main channel (L+R) : 33.75kHzdeviation Sub channel (LR): 33.75kHzdeviation Pilot: 7.5kHzDeviationCarrier frequency :

23、98MHzModulation : Audio 1kHz75kHz deviationsetFM RF SSG1kHzhighpassfilterdistortion meterFM ANTENNA (75)Modulation : Monaural Standard signalOutput level : 6mV (76dB) (at 75 open)LINE OUTDigital Voltmeter(DC range)TP201NULL terminalAll the settings are performed in the Factory Preset state. (Refer t

24、o page 13.)15Stereo and Tuned Level AdjustmentSetting:Procedure:1.Tune the set to 98 MHz.2.Adjust RV203 to the point (moment) when the “STEREO” and“TUNED” indicators will change from going off to going on.FM Signal Level AdjustmentSetting:Procedure:1.Tune the set to 98 MHz.2.Press DISPLAY button to

25、display the digital signal, then adjustRV202 to be display as “Signal 70dB”.setFM RF SSGFM ANTENNA (75)Modulation : Stereo Standard signalOutput level : 18V (25dB) (at 75 open)setFM RF SSGFM ANTENNA (75)Modulation : Stereo Standard signalOutput level : 3mV (76dB) (at 75 open)Stereo Separation Adjust

26、mentSetting:Procedure:L-CH Stereo separation : A BR-CH Stereo separation : C DThe separations of both channels should be equal.setFM RF SSGFM ANTENNA (75)LINE OUTlevel meterModulation : Stereo Standard signalOutput level : 6mV (76dB) (at 75 open)FM stereoSignal generatorOutput channelL-CHR-CHR-CHL-C

27、HLevel meterconnectionL-CHL-CHR-CHR-CHLevel meterreading (dB)ABAdjust RV301 for minimumreading on Level meterCDAdjust RV301 for minimumreading on Level meter16AM SECTIONAM Tuned Level AdjustmentSetting:Procedure:1.Set AM RF signal generator so that the AM antenna input levelbecomes 74dB/m.2.Adjust t

28、he position of RV201 so that “ TUNED” lights.Adjustment LocationMAIN BOARD Component Side AM RF SSGloop antennasetloop antenna(Supplied accessories)60 cmAM antennaterminal (TM1)30% amplitudemodulation by400 Hz signalCarrier frequency : 216kHzModulation : AUDIO 400Hz, 30% modulationField strength dB

29、(V/m) =SSG output level dB (V/m) 26 dB.CN702111CN701114CN704115RV301Stereo SeparationRV202FM Signal LevelRV201AM Tuned LevelTP201RV203FM Stereo/Tuned LevelIFT202(NULL)IFT203(THD)IFT202, 203FM DiscriminatorFE202FE101ST-D777ES1717SECTION 4DIAGRAMS4-1. BLOCK DIAGRAM3G+5VREG31IC110+B4(9V)+B3(9V)FE101DAB

30、 FRONTENDIC101IF OUTNUL+B2(5V)+B1(5V)+B5(5V)75IC102CH116DATA4BCLK5LRCKAFC CONTROLIC103AFCSDASCLSDASCLDAB+9VDRAMIC10524252.191214185.9.4744414350.51.54.596057.584RAS23CAS3WE22OENRRAS55NRCAS53NRAWME56NRAMOE52CTL DATA73CTL CLK72CTL LR71RDT0RDT3RAD0RAD9A0A9DQ1DQ4VREF83AD IN80NUL DET77DAB DECODERIC10416D

31、A OUT29RDI OUT21SDAT20SCLK19SLRCK14MCLK213VDD031VDD149VDD275VDD3DATAI48BCKI49LRCKI50LVCKO145CKVDD37DATAVDD54DINIT40Q501AVDDL14AVDDL25AVDDR121AVDDR220CTLVDD36XVDD11VDD55VDD78+3.3VREG31IC106DAB+5V82AVDD6MPU MOD5MPU TX4MPU RX3MPU CLK2MPADRDY1MPU SYNC11NRSTMPU MODMPU TXMPU RXMPU CLKMPADRDYMPU SYNCNRSTDI

32、GITAL FILTERIC5018NSDOL16NSDOL23NSDOL31NSDOL417NSDOR119NSDOR222NSDOR324NSDOR413XIN1064FSI29SYSM30INIT31LATCH32SHIFT33SC DATADF DADF CLKDF CEDA RSTDA MUTED/A CONVIC502NSDTIL156NSDTIL257NSDTIL358NSDTIL459NSDTIR149NSDTIR248NSDTIR347NSDTIR446CS12FSO51NSBCK054MUTE3979L1(+)76L1(-)2L2(+)5L2(-)26R1(+)29R1(-

33、)23R2(+)20R2(-)IC505IC507IC507IC505LINE AMPIC506IC508IC508IC50610XVDD74AVDDPL175AVDDML17AVDDPL26AVDDML231AVDDPR130AVDDMR118AVDDPR219AVDDMR213XIN+5VREG31IC503DAB+12VX50149.152M+5VREG13IC504FMTM201AMRELAYDRIVEQ201RY201+B SWITCHQ210,212AM+12VFMAM+12VQ208AMFRONTENDQ203Q204MW/LWSWITCHQ205RF AMPQ202593191

34、82010IF AMPQ206131615CF201450kHzIFT201AM RF/IF AMPIC202AM METERLEVELRV201FE201IFIN12IFREQ11AMIN14MW/LW9AOUT117AIN118PD119FM/AM8ATT7AOUT222AIN221PD222FMIN15PLLIC201FMAM+12VIF OUTOSC OUTVT+BANTFM FRONTENDFE202EEPROMIC602IF AMPQ207,209CF20210.7MHzIF AMPQ211,213CF20310.7MHzIF AMPQ214CF20410.7MHzIF AMPQ2

35、15,216CF20510.7MHz10NA/WD6DO4DI5CL3CEAP DOAP DIAP CLAP CE13MONOFM/IF AMPIC203115STEREOLEVELRV203FM METERLEVELRV20713128IF AMPQ3026Q401T201AM+12VQ301FM2AM15L16L28R17R2413STSTEREOSPARATIONRV301FM MPXIC301VDD21CF301456kHzSDASCLLPF302LPFIC302MUTEQ304,306LPF302LPFIC302MUTEQ303,305IC108IC109MUTEQ502RY501M

36、UTEQ504FMAM+12VLRPJ501ANALOGOUTDABDIGITAL OUT(OPTICAL)DABDIGITAL OUT(COAXIAL)DABRDI OUT(OPTICAL)79FL DADA MUTE77IC601SYSTEM CONTROLDA RST76DF CF75DF CL74DF DA73NRST90DA MUTEDA RSTDF CFDF CLDF DAMPU SYNC94MPADRDY95MPU CLK88MPU RX86MPU TX87MPU MOD89DP SDA31NRSTMPU SYNCMPADRDYMPU CLKMPU RXMPU TXMPU MOD

37、1110IC603DP SCL321312IC60312IC603STEREO4741314216X4014.332MHzRDSIC401A STP46RD DO85RD CL84SDA29XTAL66VCO17AP CE37AP DI34AP CL36AP DO353456AP CEAP DIAP CLAP DOSIGNAL52EXTAL68SCL30X60110MHz561650SIRCS81FL CLK82FL ENB183FL ENB278FL RSTIC802FL DRIVERDA63CP62CS61RESET604AD13AD2BUFFERQ803,8045394055SEG1SE

38、G35COM1COM16BUFFERQ805,80616GFL801IC803FL DRIVERDA63CP62CS61RESET604AD13AD2BUFFERQ801,802539SEG1SEG35FF1FF2SIRCSIC8012353KEY1+3.3V54KEY255KEY3FUNCTIONKEYROTARYENCORDERRV801S801-813T901D906FF1FF2ACINS901POWER-30V REGQ912,913IC906+5VREG23-30V5V SWQ908SWITCHQ9095836POWERCONTIC9063.3V SWQ910FMAM +5VDAB

39、+5V+3.3VD901-904IC901+12VREG23-12V SWQ907-12VDAB -12VIC903-12VREG23Q906+12V SWQ903SWITCHQ904+12V SWQ902FMAM +12VVDAB +12VSWITCHQ901D905IC902+9VREG5342DAB +9VPOWERCONTROLQ90596DAB/FMAM63POWERRESETQ91162RESET98IC603MUTECONTROLQ503AF MUTE72: DIGITAL OUT Signal Path: FM: ANALOG OUT12IC107J10118184-2. CI

40、RCUIT BOARDS LOCATION Waveforms MAIN board U : B+ Line. V : B Line. Voltages and waveforms are dc with respect to ground underno-signal (detuned) conditions.no mark : FM( ) : MW : LW: Impossible to measure Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to no

41、rmal production tol-erances. Waveforms are taken with a oscilloscope.Voltage variations may be noted due to normal production tol-erances. Circled numbers refer to waveforms. Signal path.F: FMf: AMFor printed wiring boards.Note: X : parts extracted from the component side. b : Pattern from the side

42、which enables seeing.Note:The components identified by mark 0 or dotted line withmark 0 are critical for safety.Replace only with part number specified. Indication of transistorCThese are omittedEBTHIS NOTE IS COMMON FOR PRINTED WIRINGBOARDS AND SCHEMATIC DIAGRAMS.(In addition to this, the necessary

43、 note is printed ineach block.)For schematic diagrams.Note: All capacitors are in F unless otherwise noted. pF: F 50 WVor less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise speci-fied.f: internal component. C : panel designationAC S

44、W boardKEY SW boardPOWER boardDISPLAY boardENCODER boardMAIN board 1 IC201 wf 4.6Vp-p222.2ns2 IC401 qf 2.2Vp-p230.8ns3 IC501 rg 3.3Vp-p40.7ns4 IC502 qd 6.0Vp-p20.3ns5 IC502 ta 5.6Vp-p40.7ns6 IC502 tf 6.0Vp-p162.7ns7 IC601 yk 3.5Vp-p100.0nsST-D777ES19194-3. PRINTED WIRING BOARD MAIN SECTIONRef. No.Lo

45、cationD201E-2D202C-9D203D-9D204E-7D301E-9D302C-5D501B-4D502B-4D503B-3D601D-12D602B-11IC101H-4IC102H-2IC103H-3IC104I-3IC105J-5IC106I-5IC107I-2IC108I-2IC109J-2IC110H-6IC201E-3IC202C-8IC203E-7IC301C-5IC302C-3IC401E-8IC501I-6IC502I-9IC503G-9IC504G-9IC505J-11IC506H-11IC507J-12IC508H-12IC601C-12IC602D-12I

46、C603E-11Q201E-2Q202D-6Q203C-6Q204C-7Q205D-7Q206C-9Q207G-5Q208E-4Q209F-5Q210F-5Q211G-6Q212F-5Q213F-6Q214F-6Q215E-5Q216E-6Q301D-9Q302F-9Q303C-2Q304D-2Q305C-2Q306D-2Q401E-7Q501I-7Q502B-3Q503B-4Q504B-3 SemiconductorLocation(Page 27)(Page 27)(Page 25)12ABCDEFGHIJK345678910111213 Refer to page 18 for Circ

47、uit Boards Location.ST-D777ES20204-4. SCHEMATIC DIAGRAM MAIN SECTION (1/4) Refer to page 19 for Printed Wiring Board. Refer to page 18 for Waveform. Refer to page 28 for IC Pin Function Description. Refer to page 31 for IC Block Diagrams.ST-D777ES21214-5. SCHEMATIC DIAGRAM MAIN SECTION (2/4) Refer t

48、o page 19 for Printed Wiring Board. Refer to page 18 for Waveform. Refer to page 32, 33 for IC Block Diagrams.ST-D777ES22224-6. SCHEMATIC DIAGRAM MAIN SECTION (3/4) Refer to page 19 for Printed Wiring Board. Refer to page 18 for Waveform.(Page 26)(Page 24) Refer to page 33 for IC Block Diagrams. Ref

49、er to page 29 for IC Pin Function Description.The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.ST-D777ES23234-7. SCHEMATIC DIAGRAM MAIN SECTION (4/4) Refer to page 19 for Printed Wiring Board. Refer to page 18 for Waveforms

50、.(Page 26) Refer to page 31 for IC Block Diagrams.ST-D777ES24244-8. SCHEMATIC DIAGRAM DISPLAY SECTION(Page 26)ST-D777ES2525Ref. No.LocationIC801C-13IC802B-4IC803B-7Q801C-8Q802C-8Q803B-2Q804B-2Q805C-2Q806C-2 SemiconductorLocation4-9. PRINTED WIRING BOARD DISPLAY SECTION Refer to page 18 for Circuit B