Sony-STR-DB790-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL FM STEREO FM/AM RECEIVER SPECIFICATIONS STR-DA1000ES/DB790 Photo: STR-DA1000ES Ver. 1.4 2004.11 9-877-370-05Sony Corporation 2004K05-1Audio Group 2004.11Published by Sony Engineering Corporation US Model Canadian Model STR-DA1000ES AEP Model UK Model E Model Australian Model Chinese M

2、odel STR-DB790 Continued on next page This receiver incorporates Dolby* Digital and Pro Logic Surround and the DTS* Digital Surround System. * Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. *“DTS” and “DTS Digita

3、l Surround” are registered trademarks of Digital Theater Systems, Inc. AUDIO POWER SPECIFICATIONS POWER 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%

4、 total harmonic distortion from 250 milliwatts to rated output Amplifier section POWER OUTPUT STR-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 W Reference Power Output (8 ohms 20 Hz 20 kHz, THD 0 09%) FRONT1): 1

5、00 W + 100 W CENTER1): 100 W SURR1): 100 W + 100 W SURR BACK1): 100 W + 100 W (4 ohms 20 Hz 20 kHz, THD 0 09%) FRONT1): 80 W + 80 W CENTER1): 80 W SURR1): 80 W + 80 W SURR BACK1): 80 W + 80 W (8 ohms 1 kHz, THD 0 7%) FRONT1): 100 W + 100 W CENTER1): 100 W SURR1): 100 W + 100 W SURR BACK1): 100 W (4

6、ohms 1 kHz, THD 0 7%) FRONT1): 90 W + 90 W CENTER1): 90 W SURR1): 90 W + 90 W SURR BACK1): 90 W (8 ohms 20 Hz 20 kHz, THD 0 09%) FRONT1): 90 W + 90 W CENTER1): 90 W SURR1): 90 W + 90 W SURR BACK1): 90 W (4 ohms 20 Hz 20 kHz, THD 0 09%) FRONT1): 80 W + 80 W CENTER1): 80 W SURR1): 80 W + 80 W SURR BAC

7、K1): 80 W 1) Depending on the sound field settings and the source, there may be no sound output 2) Measured under the following conditions: 3) Measured under the following conditions: Frequency response Inputs (Analog) Area codePower requirements S CN P, MY, CEL, CEK, AU, 230 V AC, 50 Hz TW110 V AC,

8、 60 Hz Area codePower requirements KR220 V AC, 50 Hz PHONORIAA equalization curve 0 5 dB MULTI CH IN, CD/ SACD, MD/TAPE, DVD, TV/SAT, VIDEO 1, 2, 3 10 Hz 100 kHz +0 5/2 dB (when ANALOG DIRECT is selected) PHONOSensitivity: 2 5 mV Impedance: 50 kilohms S/N3): 86 dB (A, 2 5 mV4) MULTI CH IN, CD/ SACD,

9、 MD/TAPE, DVD, TV/SAT, VIDEO 1, 2, 3 Sensitivity: 150 mV Impedance: 50 kilohms S/N4): 96 dB (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 2 STR-DA1000ES/DB790 4)

10、 INPUT SHORT 5) Weighted network, input level Inputs (Digital) Outputs EQ FM tuner section Tuning range87 5 - 108 0 MHz AntennaFM wire antenna Antenna terminals75 ohms, unbalanced Sensitivity Mono:18 3 dBf, 2 2 V/75 ohms Stereo:38 3 dBf, 22 5 V/75 ohms Useable sensitivity11 2 dBf, 1 V/75 ohms S/N Mo

11、no: 76 dB Stereo: 70 dB Harmonic distortion at 1 kHz Mono: 0 3% Stereo: 0 5% Separation45 dB at 1 kHz Frequency response30 Hz 15 kHz, +0 5/2 dB Selectivity60 dB at 400 kHz AM tuner section Tuning range STR-DA1000ES:530 1,710 kHz6) (With 10-kHz tuning scale) 531 1,710 kHz6) (With 9-kHz tuning scale)

12、STR-DB790:531 1,602 kHz (With 9-kHz tuning scale) AntennaLoop antenna Usable sensitivity50 dB/m (at 1,000 kHz or 999 kHz) S/N54 dB (at 50 mV/m) Harmonic distortion0 5% (50 mV/m, 400 Hz) Selectivity At 9 kHz:35 dB At 10 kHz:40 dB 6) You can change the AM tuning scale to 9 kHz or 10 kHz After tuning i

13、n any AM station, turn off the receiver While holding down PRESET TUNING + or TUNING +, press ?/1 All preset stations will be erased when you change the tuning scale To reset the scale to 10 kHz (or 9 kHz), repeat the procedure Video section Inputs/Outputs Video:1 Vp-p, 75 ohms S-video:Y: 1 Vp-p, 75

14、 ohms C: 0 286 Vp-p, 75 ohms COMPONENT VIDEO:Y: 1 Vp-p, 75 ohms B-Y: 0 7 Vp-p, 75 ohms R-Y: 0 7 Vp-p, 75 ohms DVD (Coaxial)Impedance: 75 ohms S/N: 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 mV Impedance:

15、 2 2 kilohms SUB WOOFERVoltage: 2 V Impedance: 1 kilohms Gain levels10 dB, 1 dB step General Power requirements Power consumption Power consumption (during standby mode) 1 W AC outlets Dimensions430 161 400 mm including projecting parts and controls Mass (Approx )14 5 kg Supplied accessories FM wire

16、 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) Design and specifications are subject to change without notice Area codePower requirements U, CA120 V AC, 60 Hz CEL, CEK, AU230

17、V AC, 50/60 Hz SP, MY, KR, CN220 230 V AC, 50/60 Hz TW110 V AC, 60 Hz Area codePower consumption U290 W CA340 VA CEL, CEK, AU290 W SP, MY, KR, CN290 W TW290 W Area codeAC outlets U, CA1 switched, 120 W/1A MAX SP, MY, TW 1 switched, 100 W MAX Ver 1.1 NOTE: Abbreviation AU: Australian model CA: Canadi

18、an model CEK : UK model CEL : AEP model CN: Chinese model KR: Korean model MY : Malaysia model SP: Singapore model TW : Taiwan model U: US model RadioFans.CN 收音机爱 好者资料库 3 STR-DA1000ES/DB790 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a

19、 tantalum capacitor may be dam- aged by heat. Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set t

20、o 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 TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part

21、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 AC milliamm

22、eter. 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 Sanwa SH-63Trd

23、are examples of a pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A) ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CR

24、ITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND

25、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 PUB- LISHED BY SONY. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder

26、contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher than ordinary solder. Ordinary soldering iro

27、ns can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! Strong visc

28、osity Unleaded 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 solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. 4 STR-DA1000

29、ES/DB790 1.SERVICING NOTES.5 2.GENERAL.7 Location of Controls .7 3.DISASSEMBLY 3-1.Disassembly Flow . 10 3-2.Case (414535) . 11 3-3.COMP-V Board . 11 3-4.Back Panel Block . 12 3-5.Main Block. 12 3-6.DIGITAL Board . 13 3-7.STAY-3/STAY-4/SP-B/SP-A/S-VIDEO/ VIDEO/VIDEO-AU/AU-IN Board . 14 3-8.MAIN Boar

30、d . 14 4.TEST MODE. 15 5.ELECTRICAL ADJUSTMENT. 17 6.DIAGRAMS 6-1.Block Diagram TUNER/VIDEO Section . 19 6-2.Block Diagram AUDIO DSP Section . 20 6-3.Block Diagram AUDIO CONTROL Section . 21 6-4.Block Diagram AUDIO AMP Section . 22 6-5.Block Diagram DISPLAY/KEY CONTROL Section . 23 6-6.Block Diagram

31、 POWER SUPPLY Section . 24 6-7.Note for Printed Wiring Boards and Schematic Diagrams . 25 6-8.Printed Wiring Board DIGITAL Board (Component Side) . 26 6-9.Printed Wiring Board DIGITAL Board (Conductor Side) . 27 6-10. Schematic Diagram DIGITAL Board (1/4) . 28 6-11. Schematic Diagram DIGITAL Board (

32、2/4) . 29 6-12. Schematic Diagram DIGITAL Board (3/4) . 30 6-13. Schematic Diagram DIGITAL Board (4/4) . 31 6-14. Printed Wiring Boards VIDEO/VIDEO-AU Boards . 32 6-15. Schematic Diagram VIDEO/VIDEO-AU Boards . 33 6-16. Printed Wiring Boards HP-V3/S-VIDEO Boards . 34 6-17. Schematic Diagram HP-V3/S-

33、VIDEO Boards . 35 6-18. Printed Wiring Board COMP-V Board . 36 6-19. Schematic Diagram COMP-V Board . 37 6-20. Printed Wiring Board AU-IN Board . 38 6-21. Schematic Diagram AU-IN Board . 39 6-22. Printed Wiring Board MAIN Board . 40 6-23. Schematic Diagram MAIN Board (1/3) . 41 6-24. Schematic Diagr

34、am MAIN Board (2/3) . 42 6-25. Schematic Diagram MAIN Board (3/3) . 43 6-26. Printed Wiring Board A-CLASS Board . 44 6-27. Schematic Diagram A-CLASS Board . 45 6-28. Printed Wiring Boards SBL/STAY/STAY2 Boards . 46 6-29. Schematic Diagram SBL/STAY/STAY2 Boards . 47 6-30. Printed Wiring Boards SP-A/S

35、P-B/STAY3/STAY4 Boards . 48 6-31. Schematic Diagram SP-A/SP-B/STAY3/STAY4 Boards . 49 6-32. Printed Wiring Boards DISPLAY/FUN/VOL Boards . 50 6-33. Schematic Diagram DISPLAY/FUN/VOL Boards . 51 6-34. Printed Wiring Boards DC1/DC2/TH/4/8 SW Boards . 52 6-35. Schematic Diagram DC1/DC2/TH/4/8 SW Boards

36、 . 53 6-36. Printed Wiring Boards AC/PRI/SEC1/SEC3 Boards . 54 6-37. Schematic Diagram AC/PRI/SEC1/SEC3 Boards . 55 6-38. IC Pin Function Description . 63 6.EXPLODED VIEWS 7-1.Case Section . 70 7-2.Chassis Section-1 . 71 7-3.Chassis Section-2 . 72 7-4.Main Block Section. 73 7-5.MAIN Board Block. 74

37、7-6.Chassis Section-3 . 75 7-7.Front Panel Block-1 . 76 7-8.Front Panel Block-2 . 77 7-9.Front Panel Block-3 . 78 8.ELECTRICAL PARTS LIST. 79 TABLE OF CONTENTS Ver 1.3 5 STR-DA1000ES/DB790 SECTION 1 SERVICING NOTES MODEL IDENTIFICATION Back Panel PART No. ModelPART No. DB790: AEP, UK and Australian

38、models 4-245-425-0 DB790: Singapore and Malaysia models 4-245-425-1 DB790: Taiwan model4-245-425-2 DB790: Chinese model4-245-425-3 DB790: Korean model4-245-425-4 DA1000ES: US model4-245-425-6 DA1000ES: Canadian model4-245-425-7 Ver 1.3 ERROR MESSAGES If there is a malfunction, the display shows a co

39、de of two numbers and a message. You can check the condition of the system by message. Refer to the following table to solve the problem. messagescause and response DEC. ERORAppears when the signal which the receiver can not decode (example DSD-CD) is input when “DEC.” is set to “DEC. PCM”. Set to “

40、DEC. AUTO”. PROTECTIrregular current output to the speakers. Turn off the receiver and check the speaker connection. Then turn on the power again. Be comes this display, When short current flowed with breakage of the power MOS, or when detection resistor becomes open in connection with it. 6 STR-DA1

41、000ES/DB790 SERVICE POSITION Connecting the clip for GND When checking without back panel, it is necessary to connect the clip for GND to a chassis. clip AU-IN board (JW101) It is necessary to remove cord bushing from back panel. 7 STR-DA1000ES/DB790 SECTION 2 GENERAL This section is extracted from

42、instruction manual. 2896534781 qlwswaw;qkqjqhqg qf qd qs qaq; A.F.D. qd DISPLAY 7 Display 5 INPUT MODE 8 INPUT SELECTOR 0 IR receptor 1 MAIN MENU 3 MASTER VOLUME /+ 9 MEMORY/ENTER 4 MENU w; MOVIE qs MULTI CHANNEL DECODING indicator 6 MUSIC qa PHONES jack wa PRESET TUNING /+ qj SPEAKERS ws SURR BACK DECODING qg TUNING /+ qh VIDEO 3 INPUT jacks ql 2CH qf /+ qk ?/1 (power) 2 LOCATION OF CONTROLS Front Panel 8 STR-DA1000ES/DB790