Sony-STR-DB2000-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (STR-DA2000ES model of area code US only) With 8 ohm loads, both channels driven, from 20 20,000 Hz; rated 120 watts per channel minimum RMS power, with no more than 0.6% total harmonic distortion from 250 milliwat

2、ts to rated output. Amplifier section Rated Power Output at Stereo Mode (8 ohms 20 Hz 20 kHz, THD 0 6%) 120 W + 120 W (4 ohms 20 Hz 20 kHz, THD 0 6%) 100 W + 100 W Reference Power Output (8 ohms 20 Hz 20 kHz, THD 0 6%) FRONT1): 120 W + 120 W CENTER1): 120 W SURR1): 120 W + 120 W SURR BACK1)2): 120 W

3、 + 120 W SURR BACK1)3): 120 W (4 ohms 20 Hz 20 kHz, THD 0 6%) FRONT1): 100 W + 100 W CENTER1): 100 W SURR1): 100 W + 100 W SURR BACK1)2): 100 W + 100 W SURR BACK1)3): 100 W 1) Depending on the sound field settings and the source, there may be no sound output 2) Model of STR-DA2000ES only 3) Model of

4、 STR-DB2000 only Frequency response Inputs (Analog) Inputs (Digital) Outputs EQUALIZER PHONORIAA equalization curve 0 5 dB MULTI CHANNEL INPUT 1, 2, CD/ SACD, TAPE, MD/ DAT, DVD, TV/SAT, VIDEO 1, 2, 3 10 Hz 40 kHz 3 dB (8 ohms) PHONOS/N: 86 dB MULTI CHANNEL INPUT 1, 2, CD/ SACD, TAPE, MD/ DAT, DVD,

5、TV/SAT, VIDEO 1, 2, 3 S/N: 96 dB DVD (Coaxial)Impedance: 75 ohms S/N: 100 dB (A, 20 kHz LPF) DVD, TV/SAT, MD/ DAT, VIDEO3 (Optical) S/N: 100 dB (A, 20 kHz LPF) TAPE, MD/DAT (AUDIO OUT), VIDEO 1, 2 (AUDIO OUT) Voltage: 150 mV Impedance: 2 2 kilohms FRONT L/R (STR- DA2000ES only), SUB WOOFER Voltage:

6、2 V Impedance: 1 kilohm Gain levels10 dB, 1 dB step FM STEREO FM/AM RECEIVER SPECIFICATIONS STR-DA2000ES/DB2000 Ver. 1.3 2005.01 US Model Canadian Model STR-DA2000ES AEP Model UK Model E Model STR-DB2000 Continued on next page This receiver incorporates Dolby* Digital and Pro Logic Surround and the

7、DTS* Digital Surround System * Manufactured under license from Dolby Laboratories Dolby , Pro Logic and the double-D symbol are trademarks of Dolby Laboratories * DTS , DTS-ES Extended Surround , and Neo:6 are trademarks of Digital Theater Systems, Inc Photo: STR-DB2000 RadioFans.CN 收音机爱 好者资料库 2 STR

8、-DA2000ES/DB2000 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 Mono: 76 dB Stereo: 70 dB Harmonic distortion at 1 kHz Mono

9、: 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-DA2000ES:530 1,710 kHz4) (With 10-kHz tuning scale) 531 1,710 kHz4) (With 9-kHz tuning scale) STR-DB2000:531 1,602 kHz (With 9-kHz tuning scale) Antenn

10、aLoop 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 4) You can change the AM tuning scale to 9 kHz or 10 kHz After tuning in any AM station, turn off the receiver While holding do

11、wn 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 ohms C: 0 286 Vp-p, 75 ohms COMPONENT VIDEO:Y: 1 Vp-p,

12、75 ohms PB/CB/B-Y: 0 7 Vp-p, 75 ohms PR/CR/R-Y: 0 7 Vp-p, 75 ohms General Power requirements Power consumption Power consumption (during standby mode) 1 W Dimensions430 161 400 mm including projecting parts and controls Mass (Approx )10 kg Supplied accessories FM wire antenna (1) AM loop antenna (1)

13、 STR-DA2000ES: Remote commander RM-LG112 (1) R6 (size-AA) batteries (2) STR-DB2000: Remote commander RM-PP412 (1) R6 (size-AA) batteries (2) Design and specifications are subject to change without notice Area codePower requirements STR-DA2000ES 120 V AC, 60 Hz STR-DB2000: AEP, UK 230 V AC, 50/60 Hz

14、STR-DB2000: Singapore, Malaysia 220-230 V AC, 50/60 Hz Area codePower consumption Except STR-DA2000ES: Canadian 170 W STR-DA2000ES : Canadian 300 VA RadioFans.CN 收音机爱 好者资料库 3 STR-DA2000ES/DB2000 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side

15、 of a 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

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

17、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 AC mil

18、liammeter. 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-6

19、3Trd 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 SO

20、NT CRITIQUES 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

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

22、lder 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 solderin

23、g irons 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

24、 viscosity 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-D

25、A2000ES/DB2000 1.SERVICING NOTES.5 2.GENERAL Location of Controls .8 3.DISASSEMBLY 3-1.Disassembly Flow .9 3-2.Case . 10 3-3.Front Panel Section . 10 3-4.Switching Regulator. 11 3-5.MAIN Block. 11 3-6.DIGITAL Board . 12 3-7.D. AMP Board Section . 12 4.TEST MODE. 13 5.ELECTRICAL ADJUSTMENTS. 15 6.DIA

26、GRAMS 6-1.Block Diagram AUDIO (ANALOG) (1/2) Section . 16 6-2.Block Diagram AUDIO (ANALOG) (2/2) Section . 17 6-3.Block Diagram AUDIO (DIGITAL) (1/3) Section . 18 6-4.Block Diagram AUDIO (DIGITAL) (2/3) Section . 19 6-5.Block Diagram AUDIO (DIGITAL) (3/3) Section . 20 6-6.Block Diagram PRE OUT Secti

27、on . 21 6-7.Block Diagram POWER AMP Section . 22 6-8.Block Diagram VIDEO Section . 23 6-9.Block Diagram PANEL Section . 24 6-10. Block Diagram POWER Section . 25 6-11. Note for Printed Wiring Boards and Schematic Diagrams . 26 6-12. Schematic Diagram 2CH. AU Board (1/3). 27 6-13. Schematic Diagram 2

28、CH. AU Board (2/3). 28 6-14. Schematic Diagram 2CH. AU Board (3/3). 29 6-15. Printed Wiring Board 2CH. AU Board (Component Side) . 30 6-16. Printed Wiring Board 2CH. AU Board (Conductor Side) . 31 6-17. Printed Wiring Board MULTI-VIDEO Board (Component Side) . 32 6-18. Printed Wiring Board MULTI-VID

29、EO Board (Conductor Side) . 33 6-19. Schematic Diagram MULTI-VIDEO Board (1/4) . 34 6-20. Schematic Diagram MULTI-VIDEO Board (2/4) . 35 6-21. Schematic Diagram MULTI-VIDEO Board (3/4) . 36 6-22. Schematic Diagram MULTI-VIDEO Board (4/4) . 37 6-23. Printed Wiring Board UP CONVERT Board (STR-DA2000ES

30、 only) . 38 6-24. Schematic Diagram UP CONVERT Board (STR-DA2000ES only) . 39 6-25. Printed Wiring Board S-VIDEO Board . 40 6-26. Schematic Diagram S-VIDEO Board . 41 6-27. Printed Wiring Board DIGITAL Board (Component Side) . 42 6-28. Printed Wiring Board DIGITAL Board (Conductor Side) . 43 6-29. S

31、chematic Diagram DIGITAL Board (1/8) . 44 6-30. Schematic Diagram DIGITAL Board (2/8) . 45 6-31. Schematic Diagram DIGITAL Board (3/8) . 46 TABLE OF CONTENTS 6-32. Schematic Diagram DIGITAL Board (4/8) . 47 6-33. Schematic Diagram DIGITAL Board (5/8) . 48 6-34. Schematic Diagram DIGITAL Board (6/8)

32、. 49 6-35. Schematic Diagram DIGITAL Board (7/8) . 50 6-36. Schematic Diagram DIGITAL Board (8/8) . 51 6-37. Printed Wiring Board D. AMP Board (Component Side) . 52 6-38. Printed Wiring Board D. AMP Board (Conductor Side) . 53 6-39. Schematic Diagram D. AMP Section (1/6) . 54 6-40. Schematic Diagram

33、 D. AMP Section (2/6) . 55 6-41. Schematic Diagram D. AMP Section (3/6) . 56 6-42. Schematic Diagram D. AMP Section (4/6) . 57 6-43. Schematic Diagram D. AMP Section (5/6) . 58 6-44. Schematic Diagram D. AMP Section (6/6) . 59 6-45. Printed Wiring Board CIS Board (STR-DA2000ES only) . 60 6-46. Schem

34、atic Diagram CIS Board (STR-DA2000ES only) . 61 6-47. Printed Wiring Board PANEL Section . 62 6-48. Schematic Diagram PANEL Section . 63 6-49. Printed Wiring Board HP-V3 Board . 64 6-50. Schematic Diagram HP-V3 Board . 65 6-51. Printed Wiring Board REG Board . 66 6-52. Schematic Diagram REG Board .

35、67 6-53. IC Pin Function Description . 79 7.EXPLODED VIEWS 7-1.Case Section . 91 7-2.Front Panel Section . 92 7-3.Base Panel Section . 93 7-4.Power Block Section. 94 7-5.Tuner Section . 95 7-6.Back Panel Section. 96 7-7.Chassis Section . 97 7-8.Boards Section . 98 7-9.HEAT SINK Section . 99 7-10. D.

36、 AMP Board Section .100 8.ELECTRICAL PARTS LIST.101 5 STR-DA2000ES/DB2000 SECTION 1 SERVICING NOTES PART No. MODEL IDENTIFICATION Back Panel ModelPART No. STR-DB2000: AEP and UK model4-246-294-0 STR-DB2000: Singapore and Malaysia model 4-246-294-1 STR-DA2000ES: US model4-246-294-3 STR-DA2000ES: Cana

37、dian model4-246-294-4 MULTI-VIDEO BOARD, 2CH. AU BOARD SERVICE POSITION multi video board 2ch. AU board 6 STR-DA2000ES/DB2000 D. AMP BOARD SERVICE POSITION 1Remove the case (Refer to page 10). 2Remove the switching regulator (Refer to page 10) 3Remove the main block (Refer to page 10). 4Set the swit

38、ching regulator to the main block. 5Set the main block at the shown in the figure. D. AMP board (bottom view) main block rear panel D. AMP board (CN1901) digital board (CN2006) Connect jig (extension cable J-2501-019-A) to the digital board (CN2006) and D. AMP board (CN1901) In checking the digital

39、board, prepare jig (extension cable J-2501-019-A: 1.25 mm Pitch, 25 cores, Length 300 mm). DIGITAL BOARD SERVICE POSITION Ver. 1.3 7 STR-DA2000ES/DB2000 ERROR MESSAGES If there is a malfunction, the display shows a code of two numbers and a message. You can check the condition of the system by messa

40、ge. Refer to the following table to solve the problem. messagescheck codecause and response DECODE ERROR01Appears when the signal which the receiver can not decode (example DSD-CD) is input when “DEC. PRI.” in the CUSTOM IZE menu is set to “PCM”. Set to “AUTO”. PROTECTOR11Irregular current output to

41、 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. PROTECTOR12The amplifier section is overheated. Turn of

42、f the receiver and check that the ventilation hole is not covered. Leave the receiver for a while and turn on the power again. PROTECTOR13The power supply section is overheated. Turn off the receiver and check that the ventilation hole is not covered. leave the receiver for a while and turn on the power again. PROTECTOR21DC be