Sony-STRK995-rec-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL Sony Corporation Home Audio Division Published by Sony Techno Create Corporation US Model MULTI CHANNEL AV RECEIVER 9-887-679-01 2007E16-1 2007.05 Ver. 1.0 2007.05 SPECIFICATIONS STR-K995 STR-K995 is the tuner and the amplifier section in HT-DDW995. This receiver incorporates Dolby* D

2、igital 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 Digital Surround” are registered trademarks of DTS, Inc. Continued on next page

3、 AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 6 ohm loads, both channels driven, from 120 20,000 Hz; rated 90 watts per channel minimum RMS power, with no more than 1% total harmonic distortion from 250 milliwatts to rated output. Amplifier section Power Output1) Model

4、s of area code US Stereo mode (rated) (6 ohms 1 kHz, THD 1%) 90 W + 90 W Surround mode (reference) (6 ohms 1 kHz, THD 10%) RMS output2) FRONT: 140 W per channel CENTER: 140 W SURROUND: 140 W per channel 1)Measured under the following conditions: 2)Reference power output for front, center and surroun

5、d speakers. Depending on the sound field settings and the source, there may be no sound output. Inputs AnalogSensitivity: 800 mV/ 50 kohms Digital (Coaxial)Impedance: 75 ohms Outputs (Analog) AUDIO OUTVoltage: 800 mV/ 10 kohms SUBWOOFERVoltage: 2 V/1 kohm Tone Gain levels6 dB, 1 dB step Reproduction

6、 frequency range: 28 20,000 Hz FM tuner section Tuning range87.5 - 108.0 MHz AntennaFM wire antenna Antenna terminals75 ohms, unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range With 10-kHz tuning scale: 530 1,710 kHz3) With 9-kHz tuning scale: 531 1,710 kHz3) AntennaLoop antenn

7、a Intermediate frequency 450 kHz 3)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 ?/1. All preset stations will be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), re

8、peat the procedure. Area codePower requirements US120 V AC, 60 Hz RadioFans.CN 收音机爱 好者资料库 2 STR-K995 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS W

9、ITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety check before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” kno

10、bs, 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 having a return to chassis, must not exceed 0.5 mA (500 microamperes.). L

11、eakage 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 milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

12、 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 are examples of a passive VOM that is suitable. Nearly all battery operat

13、ed digital multimeters that have a 2 V AC 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 Video section Inputs/Outputs Video:1 Vp-p, 75 ohms COMPONENT VIDEO: Y: 1 Vp-p, 75 ohms PB/CB: 0.7

14、Vp-p, 75 ohms PR/CR: 0.7 Vp-p, 75 ohms 80 MHz HD Pass Through General Power requirements Power output (DIGITAL MEDIA PORT) DC OUT:5 V, 700 mA Power consumption Power consumption (during standby mode) 0.3 W Area codePower requirements US120 V AC, 60 Hz Area codePower consumption US200 W Dimensions (w

15、idth/height/depth) (Approx.) 430 157.5 310 mm (17 6 1/4 12 1/4 inches) including projecting parts and controls Mass (Approx.)7.8 kg (17 lb 4 oz) Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 3 STR-K995 Notes on chip component replacement Never reuse a discon

16、nected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. 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

17、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 irons can be used but the iron tip has to be applied to the solder joint for a slight

18、ly 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 viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary

19、solder so use caution not to let solder bridges occur 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. TABLE OF CONTENTS 1.GENERAL.4 2.TEST MODE. 11 3.ELECTRICAL ADJUSTMENT. 13 4.DIAGRAMS. 14 4-1.Blo

20、ck Diagram MAIN Section . 15 4-2.Block Diagram DISPLAY/POWER Section . 16 4-3.Block Diagram HDMI Section . 17 4-4.Printed Wiring Board DIGITAL Board (Side A) . 18 4-5.Printed Wiring Board DIGITAL Board (Side B) . 19 4-6.Schematic Diagram DIGITAL Board (1/5) . 20 4-7.Schematic Diagram DIGITAL Board (

21、2/5) . 21 4-8.Schematic Diagram DIGITAL Board (3/5) . 22 4-9.Schematic Diagram DIGITAL Board (4/5) . 23 4-10. Schematic Diagram DIGITAL Board (5/5) . 24 4-11. Printed Wiring Board MAIN Board . 25 4-12. Schematic Diagram MAIN Board (1/4) . 26 4-13. Schematic Diagram MAIN Board (2/4) . 27 4-14. Schema

22、tic Diagram MAIN Board (3/4) . 28 4-15. Schematic Diagram MAIN Board (4/4) . 29 4-16. Printed Wiring Boards DISPLAY Board, POWER KEY Board . 30 4-17. Schematic Diagram DISPLAY Board, POWER KEY Board . 31 4-18. Printed Wiring Boards STANDBY Board, DCDC Board . 32 4-19. Schematic Diagram STANDBY Board

23、, DCDC Board . 33 4-20. Printed Wiring Boards DCAC Board, VIDEO3 Board . 34 4-21. Schematic Diagram DCAC Board, VIDEO3 Board . 35 4-22. Printed Wiring Boards VIDEO Board, HEADPHONE Board . 36 4-23. Schematic Diagram VIDEO Board, HEADPHONE Board . 37 4-24. Printed Wiring Board HDMI RE Board . 38 4-25

24、. Schematic Diagram HDMI RE Board (1/2) . 39 4-26. Schematic Diagram HDMI RE Board (2/2) . 40 5.EXPLODED VIEWS 5-1.Front Panel Section . 56 5-2.Chassis Section. 57 6.ELECTRICAL PARTS LIST. 58 About area codes Th Moreover, it is possible to distinguish the model by Part No. e area code of the receive

25、r you purchased is shown on the lower right portion of the rear panel (see the illustration below). Any differences in operation, according to the area code, are clearly indicated in the text, for example, “Models of area code AA only”. ERS ONT A R SURROUND LL R CENTER Area code Part No. BACK PANEL

26、ModelPart No. US Model2-897-800-9 RadioFans.CN 收音机爱 好者资料库 4 STR-K995 SECTION 1 GENERAL This section is extracted from instruction manual. Front panel Receiver ?/1 AUTO CAL MIC SPEAKERS (OFF/A/B/A+B) PHONES VIDEO 3 IN/PORTABLE AV IN VIDEOL AUDIO R MEMORY/ ENTER TUNING MODETUNING2CHA.F.D.MOVIEMUSIC AU

27、TO CALMUTING DISPLAYINPUT MODE INPUT SELECTOR MASTER VOLUME MULTI CHANNEL DECODING 35 9q;qaqkqdqfqgqhqj 128674 qs NameFunction A ?/1 (on/standby) Press to turn the receiver on or off (page 28, 37, 38, 54, 77). B SPEAKERS (OFF/A/B/A+B) Press to select the front speaker system (page 29). C DisplayThe

28、current status of the selected component or a list of selectable items appears here (page 7). D MULTI CHANNEL DECODING lamp Lights up when multi channel audio is decoded (page 38). E Remote sensorReceives signals from remote commander. F DISPLAYPress to select information displayed on the display (p

29、age 64). NameFunction G INPUT MODEPress to select the input mode when the same components are connected to both digital and analog jacks (page 59). H MASTER VOLUME Turn to adjust the volume level of all speakers at the same time (page 34, 35, 37, 38). I MUTINGPress to mute the sound (page 35). J AUT

30、O CALPress to activate the Auto Calibration function (page 30). K INPUT SELECTOR Turn to select the input source to playback (page 35, 37, 38, 55, 58, 59, 61, 63, 65). L 2CHPress to select a sound field (page 49, 51, 53). A.F.D. MOVIE MUSIC M TUNING +/Press to scan a station (page 55, 58). N TUNING

31、MODEPress to select the tuning mode (page 55, 77). O MEMORY/ ENTER Press to store a station or enter the selection when selecting the settings (page 28). P VIDEO 3 IN/ PORTABLE AV IN jacks Connect to a portable audio/video component such as a camcorder or video game (page 26, 35). Q AUTO CAL MIC jac

32、k Connects to the supplied optimizer microphone for the Auto Calibration function (page 30). R PHONES jackConnects to headphones (page 74). 5 STR-K995 About the indicators on the display SWLFE SP A SP B LC SLS ;D;PL;PL IIOPTDTSMEMORYST MONOD.RANGE R SR COAXHDMI 123467985 q;qaqfqsqd NameFunction A SW

33、Lights up when the audio signal is output from the SUB WOOFER jack. B LFELights up when the disc being played back contains an LFE (Low Frequency Effect) channel and the LFE channel signal is actually being reproduced. C SP A/SP BLights up according to the speaker system used. However, these indicat

34、ors do not light up if the speaker output is turned off or if headphones are connected. D ;DLights up when Dolby Digital signals are input. Note When playing a Dolby Digital format disc, be sure that you have made digital connections and that INPUT MODE is not set to “ANALOG” (page 59). E ;PL/ ;PL I

35、I “; PL” lights up when the receiver applies Pro Logic processing to 2 channel signals in order to output the center and surround channel signals. “; PL II” lights up when the Pro Logic II Movie or Music decoder is activated. NameFunction F OPTLights up when INPUT MODE is set to “AUTO IN” and the so

36、urce signal is a digital signal being input through the OPTICAL jack, or when INPUT MODE is set to “OPT IN” (page 59). G DTSLights up when DTS signals are input. Note When playing a DTS format disc, be sure that you have made digital connections and that INPUT MODE is not set to “ANALOG” (page 59).

37、H MEMORYLights up when a memory function, such as Preset Memory (page 57), etc., is activated. I Tuner indicators Lights up when using the receiver to tune in radio stations (page 54), etc. J Preset station indicators Lights up when using the receiver to tune in radio stations you have preset. For d

38、etails on presetting radio stations, see page 56. K D.RANGELights up when dynamic range compression is activated (page 42). L COAXLights up when INPUT MODE is set to “AUTO IN” and the source signal is a digital signal being input through the COAXIAL jack, or when INPUT MODE is set to “COAX IN” (page

39、 59). M HDMILights up when the receiver recognizes a component connected via a HDMI IN jack (page 20). N Playback channel indicators L R C SL SR S The letters (L, C, R, etc.) indicate the channels being played back. The boxes around the letters vary to show how the receiver downmixes the source soun

40、d. Front Left Front Right Center (monaural) Surround Left Surround Right Surround (monaural or the surround components obtained by Pro Logic processing) Example: Recording format (Front/ Surround): 3/2.1 Sound Field: A.F.D. AUTO L C R SL SR SW 6 STR-K995 Rear panel 2 5643 1 DIGITAL (ASSIGNABLE) DMPO

41、RT OPTICAL SAT IN DVD IN COAXIAL ANTENNA VIDEO 2/ BD IN AM HDMI DVD INVIDEO 2/BD INOUT SA-CD/CD/CD-RTV L R OUTININ SAT AUDIO IN VIDEO IN DVD AUDIO IN VIDEO IN VIDEO 1 AUDIO OUT VIDEO OUTVIDEO OUT AUDIO IN AUDIO OUT VIDEO IN L R L R L R SUB WOOFER MONITOR SAT IN COMPONENT VIDEO DVD INVIDEO 1 IN Y PB/

42、CB PR/CR MONITOR OUT SPEAKERS FRONT B FRONT A LR R SURROUND LL R CENTER ADIGITAL INPUT/OUTPUT section OPTICAL IN jack Connects to a DVD player, etc. The COAXIAL jack provides a better quality of loud sound (page 23, 25). COAXIAL IN jack HDMI IN/ OUT jacka) Connects to a DVD player, or a Blu-ray disc

43、 player. The image and the sound are output to a TV or a projector (page 20). DMPORT jack Connect to a DIGITAL MEDIA PORT adapter (page 60). BCOMPONENT VIDEO INPUT/ OUTPUT section COMPONENT VIDEO INPUT/ OUTPUT jacka) Connects to a DVD player, TV, satellite tuner, etc. You can enjoy high quality imag

44、e (page 22, 23, 25). Green (Y) Blue (PB/CB) Red (PR/CR) CSPEAKERS section Connects to speakers (page 17). Connects to sub woofer (page 17). DVIDEO/AUDIO INPUT/OUTPUT section AUDIO IN/ OUT jack Connects the video and audio jacks of a VCR, a DVD player, etc. (page 2226). VIDEO IN/ OUT jacka) White (L)

45、 Red (R) Yellow 7 STR-K995 a)You can watch the selected input image when you connect the HDMI OUT or MONITOR OUT jack to a TV (page 22). You can use the supplied remote to operate the receiver and to control the Sony audio/video components that the remote is assigned to operate. You can also program

46、 the remote to control non-Sony audio/video components. For details, see “Programming the remote” (page 66). RM-AAP017 EAUDIO INPUT/OUTPUT section AUDIO IN/ OUT jack Connects to Super Audio CD player, CD player, etc. (page 18). FANTENNA section FM ANTENNA jack Connects to the FM wire antenna supplied with this receiver (page 27). AM ANTENNA terminals Connects to the AM loop antenna supplied with this receiver (page 27). White (L) Red (R) Remote commander SYSTEM STANDBY TUNING DISC SKIP MUTING TOP MENU MENUF1 TV INPUTWIDE F2 TV VOL MAST