Sony-STRDE975-rec-sm 电路图 维修手册.pdf

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1、STR-DE875/DE975 US Model Canadian Model STR-DE875/DE975 AEP Model UK Model E Model Chinese Model Australian Model STR-DE875 SERVICE MANUAL FM STEREO FM-AM RECEIVER 9-873-911-13 2003I16-1 2003.09 Continued on next page SPECIFICATIONS Ver 1.2 2003. 09 Dolby Laboratories Licensing Corporation. “DOLBY”

2、the double-D symbol ; “AC-3” and “PRO LOGIC” are trademarks of Dolby Laboratories Licensing Corporation. Photo : BLACK Sony Corporation Home Audio Company Published by Sony Engineering Corporation AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 8 ohm loads, both channels

3、driven, from 20 - 20,000 Hz; rated 110 watts (STR-DE975) and 100 watts (STR-DE875) per channel minimum RMS power, with no more than 0.09 % total harmonic distortion from 250 milliwatts to rated output (USA model only). Amplifier section Rated Power Output at Stereo mode (8 ohms 20 Hz - 20 kHz, THD 0

4、.09%) STR-DE975: 110 W + 110W STR-DE875: 100 W + 100W Reference Power Output (8 ohms at 1 kHz, THD 0.7%) STR-DE975: Front1): 110 W/ch Center1): 110 W Surround1): 110 W/ch STR-DE875: Front1): 100 W/ch Center1): 100 W Surround1): 100 W/ch 1) Depending on the sound field settings and sources, there may

5、 be no sound output. Frequency response PHONO: RIAA equalization curve 0.5 dB Inputs (Analog) PHONO: Sensitivity: 4.0 mV Impedance: 50 kilohms S/Na): 86 dB (A, 4.0 mVb) MULTI CH IN, CD/SACD, DVD/LD, MD/DAT*, MD/TAPE*, TV/SAT, VIDEO 1, VIDEO 2 VIDEO 3*: Sensitivity: 250 mV Impedance: 50 kilohms S/Na)

6、: 96 dB(A, 250 mVb) a) Input short. b) Weighted network, input level US, Canadian MODELS AEP, UK MODELS : Rated Power Output at Stereo mode (8 ohms 1 kHz, THD 0.7%) 100 W + 100 W Reference Power Output (8 ohms 1 kHz, THD 0.7%) Front : 100 W/ch Center : 100 W Surround : 100 W/ch Chinese MODEL : Rated

7、 Power output at Stereo mode (8 ohms 1 kHz, THD 0.7%) 90 W + 90 W (at 220 V AC, 50 Hz) 100 W + 100 W (at 230 V AC, 50 Hz) Reference Power output (8 ohms 1 kHz, THD 10% at 230 V AC, 50 Hz) Front : 110 W/ch Center : 110 W Surround : 110 W/ch Rated Power Output at Stereo Mode (8 ohms 1 kHz, THD 100 W +

8、 100 W Reference Power Output (8 ohms 1 kHz, THD FRONT : 110 W/ch CENTER : 110 W SURROUND : 110 W/ch 0.7 %) 10 %) Others : AEP, UK MODELS : Others : Frequency response PHONO: RIAA equalization curve 0.5 dB MULTI CH IN, CD/SACD, MD/TAPE, DVD/LD, TV/SAT, VIDEO 1, VIDEO 2 : 10 Hz - 100 kHz +0.5/3 dB (w

9、ith sound field, and equalizer by passed) MULTI CH IN, CD/SACD, MD/DAT*, MD/TAPE*, DVD/LD, TV/SAT, VIDEO 1, VIDEO 2 VIDEO 3*: 10 Hz - 50 kHz +0.5/2 dB (with sound field and equalizer by passed) RadioFans.CN 收音机爱 好者资料库 2 STR-DE875/DE975 Harmonic distortion 0.5 % (50 mV/m, 400 Hz) Selectivity At 9 kHz

10、: 35 dB At 10 kHz: 40 dB c) You can change the AM tuning interval to 9 kHz. After tuning in any AM station, turn off the receiver. Hold down the PRESET TUNING + button and press the ?/1 button. All preset stations will be erased when you change the tuning interval. To reset the scale to 10 kHz, repe

11、at the procedure. Video section InputsVideo: 1 Vp-p 75 ohms S-video: Y: 1 Vp-p 75 ohms C: 0.286 Vp-p 75 ohms OutputsVideo: 1 Vp-p 75 ohms S-video: Y: 1 Vp-p 75 ohms C: 0.286 Vp-p 75 ohms General SystemTuner section: PLL quartz-locked digital synthesizer system Preamplifier section: Low-noise NF type

12、 equalizer Power amplifier section: Pure-complementary SEPP Power requirements 120 V AC, 60 Hz Power consumption US MODEL : STR-DE975: 270 W In standby condition: 0.9 W STR-DE875: 260 W In standby condition: 0.9 W Canadian MODEL : Others : STR-DE975: 350 VA In standby condition: 0.9 W STR-DE875: 340

13、 VA In standby condition: 0.9 W AC outlets 2 switched, total 120 W/1A Max Dimensions430 157.5 369 mm (17 6 1/8 14 4/8 in.) including projecting parts and controls Mass (Approx.) 9.5 kg (20 lbs. 16 oz.) Supplied accessories Design and specifications are subject to change without notice. FM tuner sect

14、ion Tuning range 87.5 - 108.0 MH Antenna terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz SensitivityMono: 18.3 dBf, 2.2 V/75 ohms Stereo: 38.3 dBf 22.5 V/75 ohms Usable sensitivity 11.2 dBf, 1 V/75 ohms S/NMono: 76 dB Stereo: 70 dB Harmonic distortion at 1 kHz Mono: 0.3% Stereo: 0.5% S

15、eparation45 dB at 1 kHz Frequency response 30 Hz - 15 kHz +0.5/2 dB Selectivity60 dB at 400 kHz AM tuner section Tuning range With 10-kHz tuning scale: 530 - 1710 kHzc) With 9-kHz tuning scale: 531 - 1710 kHzc) AntennaLoop antenna Intermediate frequency 450 kHz Usable sensitivity 50 dB/m (at 1,000 k

16、Hz or 999 kHz) 50 dB/m (at 999 kHz) S/N54 dB (at 50 mV/m) FM wire antenna (1) AM loop antenna (1) R6 (size-AA) batteries (2) US, Canadian model only Audio/video/control S connecting cord (1) Control S connecting cord (1) STR-DE975 only Remote commander RM-PP505L (remote) (1) STR-DE875 : US, Canadian

17、, E, Malaysia, Remote commander RM-PP505 (remote) (1) EQBASS: 99 Hz1.0 kHz (21 steps) MID: 198 Hz10 kHz (37 steps) TREBLE: 1.0 kHz10 kHz (23 steps) Gain levels: 10 dB, 1dB step Sampling Frequency 48 kHz (TV/SAT, MD/DAT*, MD/TAPE* OPTICAL IN) 96 kHz (DVD/LD OPTICAL IN, COAXIAL IN) * STR-DE975 only *

18、STR-DE875 only OutputsMD/DAT*, MD/TAPE* (OUT); VIDEO 1, VIDEO 2: (AUDIO OUT): Voltage: 250 mV, Impedance: 10 kilohms SUB WOOFER: Voltage: 2 V Impedance: 1 kilohms PHONES: Accepts low- and high-impedance headphones Inputs (Digital) DVD/LD (coaxial): Sensitivity: Impedance: 75 ohms S/N: 100 dB (A, 20

19、kHz LPF) DVD/LD, TV/SAT, MD/DAT*, MD/TAPE* (Optical): Sensitivity: Impedance: S/N: 100 dB (A, 20 kHz LPF) Singapore, Chinese, Australian model only STR-DE875 : AEP, UK model only Commander, standard RM-U305A (remote) d) You can change the AM tuning interval to 10 kHz. After tuning in any AM station,

20、 turn off the receiver. Hold down the TUNING + button and press the 1/u button. All preset stations will be erased when you change the tuning interval. To reset the scale to 9 kHz, repeat the procedure. AEP, UK MODELS : 531 - 1602 kHz E MODEL : 530 - 1610 kHz (10 kHz step)d) 531 - 1602 kHz (9 kHz st

21、ep)d) Others : 531 - 1602 kHz (9 kHz step) US, Canadian MODELS : AEP, UK MODELS : Others : AEP, UK MODELS : 35 dB Others : US, Canadian MODELS : AEP, UK MODELS : E MODEL : 230 V AC, 50/60 Hz 120/220/240 V AC, 50/60 Hz Australian MODEL : 240 V AC, 50 Hz Others : 220-230 V AC, 50/60 Hz 220 W In standb

22、y condition: 0.9 W US, Canadian MODELS : AEP, UK MODELS : 1 switched, max 100 W E, Chinese MODELS : Others : 2 switched, total 100 W max 1 switched, total 100 W max RadioFans.CN 收音机爱 好者资料库 3 STR-DE875/DE975 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0

23、ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. After correcting the original service problem, perform the following safety checks before re

24、leasing 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 The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed

25、 metal part having a 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 RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated

26、AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanw

27、a SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT To Exposed Metal Parts on Set 0.15 F 1.5 k AC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leaka

28、ge. Parts No. MODEL IDENTIFICATION BACK PANEL ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUM

29、ROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. PARTS No. 4-232-578-0s 4-232-578-1s 4-233-045-0s 4-233-045-1s 4-233-045-2s 4-233-045-3s 4-233-045-4s 4-233-045-5s 4-233-045-6s 4-233-045-7s MODEL DE975:US model DE975:Canadian model DE875:US model DE875:Canadian model DE875:Austral

30、ian model DE875:Malaysia,Singapore model DE875:Chinese model DE875:E model DE875:AEP model DE875:UK model RadioFans.CN 收音机爱 好者资料库 4 STR-DE875/DE975 TABLE OF CONTENTS 1. GENERAL 5 2. TEST MODE 7 3. DIAGRAMS 3-1.Circuit Boards Location . 8 3-2.Block Diagrams . 10 Main Section . 10 Power Section . 11 3

31、-3.Printed Wiring Board Digital Section . 12 3-4.Schematic Diagram Digital Section (1/4) . 13 3-5.Schematic Diagram Digital Section (2/4) . 14 3-6.Schematic Diagram Digital Section (3/4) . 15 3-7.Schematic Diagram Digital Section (4/4) . 16 3-8.Printed Wiring Board Main Section . 17 3-9.Schematic Di

32、agram Main Section (1/3) . 18 3-10. Schematic Diagram Main Section (2/3) . 19 3-11. Schematic Diagram Main Section (3/3) . 20 3-12. Printed Wiring Board Display Section . 21 3-13. Schematic Diagram Display Section . 22 3-14. Printed Wiring Board Video Section . 23 3-15. Schematic Diagram Video Secti

33、on . 24 3-16. Printed Wiring Board Speaker Section . 25 3-17. Schematic Diagram Speaker Section . 26 3-18. Printed Wiring Board Power Section . 27 3-19. Schematic Diagram Power Section . 28 3-20. IC Block Diagrams. 29 3-21. IC Pin Function Description. 33 4. EXPLODED VIEWS 4-1.Front Panel Section .

34、36 4-2.Chassis Section. 37 5. ELECTRICAL PARTS LIST 39 5 STR-DE875/DE975 SECTION 1 GENERALThis section is extracted from instruction manual. ? / 1 DISPLAY DIMMER ON SCREEN MEMORYSHIFTFM MODEFMAM PRESET TUNINGTUNING + MULTI CHANNEL DECODING A.F.D. SOUND FIELDMULTI /2CH A. DIRECT DIGITAL CONCERT HALL

35、EQUALIZER MUTING INPUT MODE MODE 2ND ROOM FUNCTION 6.1 CH DECODINGCINEMA STUDIO EX AA MODE2CH PHONES VIDEO 3 INPUT VIDEO L AUDIO R SPEAKERS EQ SURR LEVEL SET UP NAME ENTER BBC MASTER VOLUME + 0 12 34586 7qa9 v 1 ?/1 switch Press to turn the receiver on and off. 2 DISPLAY button Press repeatedly to c

36、hange the information on the display window as follows: Index name of the component or the preset station* v FUNCTION button indication or frequency* v Sound field applied to the program source * Index name appears only when you have assigned one to the component or preset station (see page 49). Ind

37、ex name does not appear when only blank spaces have been entered, or it is the same as the function button. * Frequency appears only when the tuner is selected. 3 DIMMER button Press DIMMER repeatedly to adjust the brightness of the display (5 steps). When set to the dimmest setting, the display is

38、turned off. However, when you press any button, the display becomes the brightest setting temporary. 4The following buttons operate the built-in tuner. For details, see “Receiving Broadcasts” starting from page 44. PRESET TUNING +/ buttons Scan all preset stations. TUNING +/- buttons Scan all the av

39、ailable radio stations. MEMORY button Press to memorize a preset station. SHIFT button Selects a memory page for preset stations. FM MODE button If “STEREO” flashes in the display and the FM stereo reception is poor, press this button. You will not have the stereo effect but the sound is improved. F

40、M button Selects the FM band. AM button Selects the AM band. 5 MULTI CHANNEL DECODING indicator This indicator lights up when the unit is decoding signals recorded in a multi channel format. 6 Use the CINEMA STUDIO EX buttons to enjoy the CINEMA STUDIO EX sound effects. A/B/C buttons Press to activa

41、te the CINEMA STUDIO EX A, B or C sound field (page 32). 7 Use the SOUND FIELD buttons to enjoy surround sound. For details, see “Enjoying Surround Sound” starting from page 30. A.F.D. button / indicator Press to set the receiver to automatically detect the type of audio signal being input and perfo

42、rm proper decoding (if necessary). MODE button / indicator Press to activate the sound field selection mode (page 31). 2CH button / indicator Press to output sound from only the front (left and right) speakers. 8 MASTER VOLUME control After turning on the component you selected, rotate to adjust the

43、 volume. Press MODE to display And rotate FUNCTION to select V:XXXAny video source to enjoy with the audio from the selected component A:XXXAny audio source to enjoy with the video from the selected component qa INPUT MODE button Press INPUT MODE to select the input mode for your digital components.

44、 Each time you press the button, the input mode of the currently selected component switches. SelectTo AUTO 2CHGive priority to the analog audio signals input to the AUDIO IN (L/R) jacks when there is no digital signals. COAXIAL FIXEDSpecify the digital audio signals input to the DIGITAL COAXIAL inp

45、ut jacks. OPTICAL FIXEDSpecify the digital audio signals input to the DIGITAL OPTICAL input jacks. ANALOG 2CH FIXEDSpecify the analog audio signals input to the AUDIO IN (L/R) jacks. When the MULTI CH is assigned to a specific function using SET UP menu (page 51), “AUTO MULTI CH” and “MULTI CH FIXED

46、” are displayed instead of “AUTO 2CH” and “ANALOG 2CH FIXED”. SelectTo AUTO MULTI CHGive priority to the analog audio signals input to the MULTI CH IN jacks when there is no digital signals. MULTI CH FIXEDSpecify the analog audio signals input to the MULTI CH IN jacks. 9 2ND ROOM button (STR-DE975 only) Press repeatedly to select the audio signals for output to a stereo amplifier or speakers in another room (page 12). Each press selects another audio source (except PHONO) to be output from the 2ND ROOM jacks. “SOURCE” selects the same program source as the main fun