Sony-STRDG820-rec-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL Sony Corporation Audio 5,956,674; 5,974,380; 5,978,762; 6,226,616; 6,487,535 rated 100 watts per channel minimum RMS power, with no more than0.09%totalharmonicdistortionfrom250 milliwatts to rated output. Amplifier section Models of area code U, CA Power Output1) Minimum RMS Output Po

2、wer (8 ohms, 20 Hz 20 kHz, THD 0.09%) 100 W + 100 W Stereo Mode Output Power (8 ohms, 1 kHz, THD 0.7%) 110 W + 110 W Surround Mode Output Power2) (8 ohms, 1 kHz, THD 10%) 150 W per channel 1)Measured under the following conditions: 2)Referencepoweroutput forfront,center,surround and surround back sp

3、eakers. Depending on the sound field settings and the source, there may be no sound output. Frequency response Analog10 Hz 70 kHz, +0.5/2 dB (with sound field and equalizer bypassed) Input AnalogSensitivity: 500 mV/ 50 kohms S/N3): 96 dB (A, 500 mV4) Digital (Coaxial)Impedance: 75 ohms S/N: 100 dB (

4、A, 20 kHz LPF) Digital (Optical)S/N: 100 dB (A, 20 kHz LPF) Area codePower requirements U, CA120 V AC, 60 Hz CEL, CEK, ECE230 V AC, 50 Hz Output (analog) AUDIO OUTVoltage: 500 mV/ 10 kohms SUBWOOFERVoltage: 2 V/1 kohm Equalizer Gain levels10 dB, 1 dB step 3)INPUT SHORT (with sound field and equalize

5、r bypassed). 4)Weighted network, input level. FM tuner section Tuning range87.5 MHz 108.0 MHz Antenna (aerial)FM wire antenna (aerial) Antenna (aerial) terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz Models of area code CEL, CEK, ECE, AU, TW, E511) Minimum RMS Output Power (8 ohms, 20

6、Hz 20 kHz, THD 0.09%) 85 W + 85 W Stereo Mode Output Power (8 ohms, 1 kHz, THD 0.7%) 100 W + 100 W Surround Mode Output Power2) (8 ohms, 1 kHz, THD 10%) 140 W per channel Models of area code KR1) Minimum RMS Output Power (8 ohms, 20 Hz 20 kHz, THD 0.09%) 75 W + 75 W Stereo Mode Output Power (8 ohms,

7、 1 kHz, THD 0.7%) 90 W + 90 W Surround Mode Output Power2) (8 ohms, 1 kHz, THD 10%) 130 W per channel AU, E51 240 V AC, 50 Hz TW 110 V AC, 60 Hz KR 220 V AC, 60 Hz RadioFans.CN 收音机爱 好者资料库 STR-DG820 2 SAFETY-RELATED COMPONET WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE S

8、CHEMATIC 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. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus

9、 side of a tantalum capacitor may be dam- aged by heat. SAFETY CHECK-OUT After 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 exposed metal part

10、s 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 having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of

11、 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 milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a re

12、sistor 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 are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC

13、 range are suitable. (See Fig. A) 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 About area codes The area code of the receiver you purchased is shown on the lower right portion of the rear panel (see the illustration b

14、elow). Any differences in operation, according to the area code, are clearly indicated in the text, for example, “Models of area code AA only”. SPEAKERS SPEAKERS CENTER SURROUND BACK FRONT AFRONT B L R SURROUND L R L L R R Area code AM tuner section Tuning range Antenna (aerial)Loop antenna Intermed

15、iate frequency 450 kHz 5)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 down TUNING MODE, press POWER on the receiver. All preset stationswillbeerasedwhenyouchangethetuning scale. To reset the scale to 10 kHz (or 9 kHz), re

16、peat the procedure. Video section Inputs/Outputs Video:1 Vp-p, 75 ohms COMPONENT VIDEO: Y: 1 Vp-p, 75 ohms PB/CB: 0.7 Vp-p, 75 ohms PR/CR: 0.7 Vp-p, 75 ohms 80 MHz HD Pass Through Area codeTuning scale 10 kHz step9 kHz step CEL, CEK, ECE531 kHz 1,602 kHz U, CA 530 kHz 1,710 kHz5) 531 kHz 1,710 kHz5)

17、 General Power requirements Power output (DIGITAL MEDIA PORT) DC OUT:5V, 0.7 A MAX Power consumption Power consumption (during standby mode) 0.7 W (When “CTRL:HDMI” in HDMI menu is set to “CTRL OFF”) Dimensions (width/height/depth) (Approx.) 17 6 1/4 12 5/8 inches (430 157.5 318 mm) including projec

18、ting parts and controls Mass (Approx.)18 lb 12 oz (8.5 kg) (U, CA) 8.4 kg (CEL, CEK, ECE, AU, TW, KR, E51) Supplied accessories Operating instructions Quick Setup Guide (1) FM wire antenna (aerial) (1) AM loop antenna (aerial) (1) Remote commander (RM-AAP021) (1) R6 (size-AA) batteries (2) Optimizer

19、 microphone (ECM-AC2) (1) Design and specifications are subject to change without notice. Area codePower consumption U 250 W CA 320 VA Area codePower requirements U, CA 120 V AC, 60 Hz CEL, CEK, ECE 230 V AC, 50/60 Hz AU, E51530 kHz 1,710 kHz5) 531 kHz 1,710 kHz5) KR, TW530 kHz 1,610 kHz5) 531 kHz 1

20、,602 kHz5) AU240 V AC, 50 Hz TW110 V AC, 60 Hz KR220 - 230 V AC, 50/60 Hz E51120/220/240 V AC, 50/60 Hz CEL, CEK, ECE, AU, KR, E51 230 W TW220 W ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQU

21、ES POUR LA SCURIT DE FONC- TIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DON- NS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. Ver. 1.1 RadioFans.CN 收音机爱 好者资料库 STR-DG820 3 1. SERVICING NOTES . 3 2. GENERAL . 4 3. DISASSEMBLY 3-1. Disassembly Flow . 9

22、3-2. Case . 9 3-3. Front Panel Block . 10 3-4. Back Panel Block . 10 3-5. Main Block . 11 3-6. MAIN Board . 11 4. TEST MODE . 12 5. ELECTRICAL CHECK . 13 6. DIAGRAMS 6-1. Block Diagram - MAIN Section - . 14 6-2. Block Diagram - HDMI Section - . 15 6-3. Block Diagram - DSP/XM Section - . 16 6-4. Bloc

23、k Diagram - AUDIO Section - . 17 6-5. Block Diagram - POWER SUPPLY Section - . 18 6-6. Printed Wiring Board - MAIN Board - . 20 6-7. Schematic Diagram - MAIN Board (1/3) - . 21 6-8. Schematic Diagram - MAIN Board (2/3) - . 22 6-9. Schematic Diagram - MAIN Board (3/3) - . 23 6-10. Printed Wiring Boar

24、d - HDMI Board (Component Side) - . 24 6-11. Printed Wiring Board - HDMI Board (Conductor Side) - . 25 6-12. Schematic Diagram - HDMI Board (1/2) - . 26 6-13. Schematic Diagram - HDMI Board (2/2) - . 27 6-14. Printed Wiring Board - XM Board (US, Canadian models) - . 28 6-15. Schematic Diagram - XM B

25、oard (US, Canadian models) - . 29 6-16. Printed Wiring Board - DSP Board - . 30 6-17. Schematic Diagram - DSP Board - . 31 6-18. Printed Wiring Boards - DIGITAL AUDIO Section (1/2) - . 32 6-19. Printed Wiring Board - DIGITAL AUDIO Section (2/2) - . 33 6-20. Schematic Diagram - DIGITAL AUDIO Section

26、(1/2) - . 34 6-21. Schematic Diagram - DIGITAL AUDIO Section (2/2) - . 35 6-22. Printed Wiring Board - MICOM Board - . 36 6-23. Schematic Diagram - MICOM Board - . 37 6-24. Printed Wiring Board - DISPLAY Board - . 38 6-25. Schematic Diagram - DISPLAY Board - . 39 6-26. Printed Wiring Board - VIDEO B

27、oard - . 40 6-27. Schematic Diagram - VIDEO Board - . 41 6-28. Printed Wiring Boards - PANEL Section - . 42 6-29. Schematic Diagram - PANEL Section - . 43 6-30. Printed Wiring Board - SPEAKER Board - . 44 6-31. Schematic Diagram - SPEAKER Board - . 44 6-32. Printed Wiring Board - DCDC Board - . 45 6

28、-33. Schematic Diagram - DCDC Board - . 45 6-34. Printed Wiring Boards - POWER Section - . 46 6-35. Schematic Diagram - POWER Section - . 47 7. EXPLODED VIEWS 7-1. Case Section . 70 7-2. Front Panel Section . 71 7-3. Back Panel Section . 72 7-4. Chassis Section . 73 8. ELECTRICAL PARTS LIST . 74 TAB

29、LE OF CONTENTS SECTION 1 SERVICING NOTES UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD F

30、REE MARK Unleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher than ordinary solder. Ordinary soldering 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 regul

31、ator 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 viscosity Unleaded solder is more viscou-s (sticky, less prone to fl ow) than ordinary solder so use caution not to let solder bridges occur su

32、ch 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. NOTE OF REPLACING THE IC3506 AND IC3508 ON THE HDMI BOARD IC3506 and IC3508 on the HDMI board cannot exchange with sin- gle. When IC3506 and IC3508 on t

33、he HDMI board are damaged, exchange the entire mounted board. NOTE OF REPLACING THE IC5021 ON THE DSP BOARD IC5021 on the DSP board cannot exchange with single. When IC5021 on the DSP board is damaged, exchange the entire mount- ed board. NOTE OF REPLACING THE IC7005 ON THE MICOM BOARD IC7005 on the

34、 MICOM board cannot exchange with single. When IC7005 on the MICOM board is damaged, exchange the entire mounted board. Ver. 1.1 Note: Refer to supplement-1 for the HDMI and DSP boards of print- ed wiring boards, schematic diagram and electrical parts list of Chilean, Peruvian, Korean, Taiwan and Au

35、stralian models. RadioFans.CN 收音机爱 好者资料库 STR-DG820 4 SECTION 2 GENERAL Front panel SPEAKERS (OFF/A/B/A+B) PHONES VIDEO 2 IN/PORTABLE AV IN VIDEOL AUDIO RAUTO CAL MIC MEMORY/ ENTER 2CH/ A.DIRECTA.F.D.MOVIEMUSICDIMMER INPUT SELECTOR TONE MODE ON/STANDBY TUNING MODE POWER TUNING DISPLAYINPUT MODE MASTE

36、R VOLUME TONE ? ? To remove the cover Press PUSH. Whenyouremovethecover,keepitout of reach from children. Status of the POWER button Off The receiver is turned off (initial setting). The ON/STANDBY lamp lights off. Press POWER to turn the receiver on. You cannot turn the receiver on using the remote

37、. On/Standby Press?/? on the remote to turn the receiveronorsetittothestandbymode. When you press POWER on the receiver, the receiver will be turned off. The ON/STANDBY lamp lights up in green when the receiver is on. The ON/STANDBY lamp lights up in red when the receiver is set to standby mode. Nam

38、eFunction ? POWERPresstoturnthereceiveron or off. ON/STANDBY lamp Show the status of the receiver. ? TONE MODEAdjusts the tonal quality (bass/treble level) of the front speakers. Press TONE MODE repeatedly to select bass or treble level, then turn TONE +/ to adjust the level. TONE +/ ? TUNING MODEPr

39、ess to select the tuning mode. ? TUNING +/Turntoscanastation. ? Remote sensorReceives signals from remote commander. ? Display windowThe current status of the selectedcomponentoralist of selectable items appears here. ? DISPLAYPress repeatedly to select information displayed on the display. ? INPUT

40、MODEPress to select the input mode when the same components are connected to both digital and analog jacks. NameFunction ? MEMORY/ ENTER Press to store a station or enter the selection when selecting the settings. ? AUTO CAL MIC jack Connects to the supplied optimizer microphone for the Digital Cine

41、ma Auto Calibration function. ? VIDEO 2 IN/ PORTABLE AV IN jacks Connects to a portable audio/video component such as a camcorder or video game. ? SPEAKERS (OFF/A/B/A+B) Switch to OFF, A, B, A+B of the front speakers. ? PHONES jackConnects to headphones. NameFunction ? INPUT SELECTOR Turn to select

42、the input source to playback. ? 2CH/A.DIRECTPresstoselecta soundfield. A.F.D. MOVIE MUSIC ? DIMMERPress repeatedly to adjust the brightness of the display. ? MASTER VOLUME Turn to adjust the volume level of all speakers at the same time. This section is extracted from instruction manual. STR-DG820 5

43、 About the indicators on the display ? ? ? NameFunction ? SWLightsupwhentheaudiosignal is output from the SUBWOOFER jacks. ? LFELights up when the disc being played back contains an LFE (Low Frequency Effect) channel and the LFE channel signal is actually being reproduced. ? COAXLights up when INPUT MODE issetto“AUTO”andthesource signal is a digital signal being input through the COAXIAL jack. ? OPTLights up when INPUT MODE issetto“AUT