Sony-STRK990-rec-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL Sony Corporation Audio 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) Stereo mode (6 ohms, 1 kHz, THD 1%) 90 W + 90 W Surround mode2) (reference) (6 ohms, 1 kHz, THD 10%

2、) RMS output 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 surround speakers. Depending on the sound field settings and the source, there may be no sound output. Inputs AnalogSensitivity: 800

3、mV/ 50 kohms Digital (Coaxial)Impedance: 75 ohms Outputs (Analog) AUDIO OUTVoltage: 800 mV/ 10 kohms SUB WOOFERVoltage: 2 V/1 kohm Tone Gain levels6 dB, 1 dB step Area codePower requirements US, Canadian120 V AC, 60 Hz Reproduction frequency range: 28 20,000 Hz FM tuner section Tuning range87.5 - 10

4、8.0 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 antenna Intermediate frequency 450 kHz 3)You can change the AM tuning scale

5、 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), repeat the procedure. RadioFans.CN 收音机爱 好者资料库 2 STR-K990 SAFETY-RELATED

6、 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 WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Power consump

7、tion Power consumption (during standby mode) 0.3 W Dimensions (width/height/depth) (Approx.) 17 6 1/4 12 1/4 inches (430 157.5 310 mm) including projecting parts and controls Mass (Approx.)17 lb 4 oz (7.8 kg) Area codePower consumption US200 W Canadian270 VA Video section Inputs/Outputs Video:1 Vp-p

8、, 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 General Power requirements Power output (DIGITAL MEDIA PORT) DC OUT: 5V, 700 mA Area codePower requirements US, Canadian120 V AC, 60 Hz SAFETY CHECK-OUT After correcting the origina

9、l service problem, perform the following safety check before releasing 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 TEST The AC leakage from any exposed metal

10、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 three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manuf

11、acturers 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 resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog met

12、ers 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 range are suitable. (See Fig. A) Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmet

13、er (0.75 V) To Exposed Metal Parts on Set Earth Ground Design and specifications are subject to change without notice. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCT

14、IONNEMENT. 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. RadioFans.CN 收音机爱 好者资料库 3 STR-K990 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum

15、 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 the lead free mark due to their particular size) : LEAD FREE MA

16、RK 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 regulator s

17、hould 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 solder so use caution not to let solder bridges occur such as o

18、n 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.Block Diagram MAIN Section . 15 4-2.Block Diagram DISPLAY/POWER Se

19、ction . 16 4-3.Printed Wiring Board DIGITAL Board (Side A) . 17 4-4.Printed Wiring Board DIGITAL Board (Side B) . 18 4-5.Schematic Diagram DIGITAL Board (1/5) . 19 4-6.Schematic Diagram DIGITAL Board (2/5) . 20 4-7.Schematic Diagram DIGITAL Board (3/5) . 21 4-8.Schematic Diagram DIGITAL Board (4/5)

20、. 22 4-9.Schematic Diagram DIGITAL Board (5/5) . 23 4-10. Printed Wiring Board MAIN Board . 24 4-11. Schematic Diagram MAIN Board (1/4) . 25 4-12. Schematic Diagram MAIN Board (2/4) . 26 4-13. Schematic Diagram MAIN Board (3/4) . 27 4-14. Schematic Diagram MAIN Board (4/4) . 28 4-15. Printed Wiring

21、Boards DISPLAY Board, POWER KEY Board . 29 4-16. Schematic Diagram DISPLAY Board, POWER KEY Board . 30 4-17. Printed Wiring Boards STANDBY Board, DCDC Board . 31 4-18. Schematic Diagram STANDBY Board, DCDC Board . 32 4-19. Printed Wiring Boards DCAC Board, VIDEO3 Board . 33 4-20. Schematic Diagram D

22、CAC Board, VIDEO3 Board . 34 4-21. Printed Wiring Boards VIDEO Board, HEADPHONE Board . 35 4-22. Schematic Diagram VIDEO Board, HEADPHONE Board . 36 4-23. Printed Wiring Board HDMI SW Board . 37 4-24. Schematic Diagram HDMI SW Board . 38 5.EXPLODED VIEWS 5-1.Front Panel Section . 47 5-2.Chassis Sect

23、ion. 48 6.ELECTRICAL PARTS LIST. 49 About area codes Th Moreover, it is possible to distinguish the model by Part No. e area code of the receiver 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

24、, 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 ModelPart No. US Model2-897-800-7 Canadian Model2-897-800-8 RadioFans.CN 收音机爱 好者资料库 4 STR-K990 SECTION 1 GENERAL This section is extracted from instruction

25、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 AUTO CALMUTING DISPLAYINPUT MODE INPUT SELECTOR MASTER VOLUME 34 89 1 2567 q;qaqjqsqgqhqdqf NameFunction A ?/1 (on/standby) Press

26、to turn the receiver on or off (page 29, 38, 39, 54). B SPEAKERS (OFF/A/B/A+B) Press to select the speaker system (page 30). C DisplayThe current status of the selected component or a list of selectable items appears here (page 7). D Remote sensorReceives signals from remote commander. E DISPLAYPres

27、s to select information displayed on the display (page 63). F INPUT MODEPress to select the input mode when the same components are connected to both digital and analog jacks (page 59). G MASTER VOLUME Turn to adjust the volume level of all speakers at the same time (page 35, 36, 38, 39). H MUTINGPr

28、ess to mute the sound (page 36). I AUTO CALPress to activate the Auto Calibration function (page 32). J INPUT SELECTOR Turn to select the input source to playback (page 36). NameFunction K 2CHPress to select a sound field (page 49, 51, 54). A.F.D. MOVIE MUSIC L TUNING +/Press to scan a station (page

29、 55, 58). M TUNING MODEPress to select the tuning mode (page 55, 58). N MEMORY/ ENTER Press to store a station or enter the selection when selecting the settings (page 29, 57). O VIDEO 3 IN/ PORTABLE AV IN jacks Connects to a camcorder or video game (page 27, 36). P AUTO CAL MIC jack Connects to the

30、 supplied optimizer microphone for the Auto Calibration function (page 31). Q PHONES jackConnects to headphones (page 73). 5 STR-K990 About the indicators on the display SWLFE SP A SP B LC SLS ;D;PL;PL IIOPTDTSMEMORYST MONOD.RANGECOAX R SR 1234768q;95 qaqsqfqd NameFunction A SWLights up when the aud

31、io 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 (page 30). However, these indicators do not l

32、ight up if the speaker output is turned off or if headphones are connected. D ; DLights up when the receiver is decoding Dolby Digital signals. 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 I

33、ILights up when the Pro Logic II Movie/Music decoder is activated. F ; PLLights up when the receiver applies Pro Logic processing to 2 channel signals in order to output the center and surround channel signals. NameFunction G OPTLights up when VIDEO 2 input is selected. However, “UNLOCK” appears on

34、the display if no digital signal is input through the OPTICAL jack. “OPT” also lights up when SAT input is selected if INPUT MODE is set to “AUTO IN” and the source signal is a digital signal being input through the OPTICAL jack. INPUT MODE is set to “OPT IN” (page 59). H DTSLights up when the recei

35、ver is decoding DTS signals. 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). I MEMORYLights up when a memory function, such as Preset Memory (page 56), etc., is activated. J Tuner indicators Lights up when usin

36、g the receiver to tune in radio stations (page 55), etc. K Preset station indicators Lights up when using the receiver to tune in preset radio stations. For details on presetting radio stations, see page 56. L D.RANGELights up when dynamic range compression is activated (page 41). M COAXLights up wh

37、en 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 59). 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 le

38、tters vary to show how the receiver downmixes the source sound. 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 SW LCR SLS

39、R 6 STR-K990 Rear panel 12 3456 DIGITAL DMPORT OPTICAL SAT IN DVD IN COAXIAL ANTENNA VIDEO 2/ BD IN AM SA-CD/CD/CD-RTV L R OUTININ HDMI DVD INVIDEO 2/BD INOUT SAT AUDIO IN VIDEO IN DVD AUDIO IN VIDEO IN VIDEO 1 AUDIO OUT VIDEO OUT VIDEO OUTSAT IN AUDIO IN AUDIO OUT VIDEO IN L R L R L R SUB WOOFER MO

40、NITORCOMPONENT VIDEO DVD INVIDEO 1 IN Y PB/CB PR/CR MONITOR OUT SPEAKERS FRONT B FRONT A LR R SURROUND LL R CENTER ADIGITAL INPUT/OUTPUT section OPTICAL IN jacks Connects to a DVD player, etc. The COAXIAL jack provides a better quality of loud sound (page 21, 24, 26). COAXIAL IN jack HDMI IN/ OUT ja

41、cks* Connects to a DVD player or a Blu-ray disc player. The image and the sound are output to a TV or a projector (page 21). DMPORT jack Connects to a DIGITAL MEDIA PORT adapter (page 61). BCOMPONENT VIDEO INPUT/ OUTPUT section COMPONENT VIDEO INPUT/ OUTPUT jacks* Connects to a DVD player, TV, satel

42、lite tuner, etc. You can enjoy high quality image (page 2326). Green (Y) Blue (PB/CB) Red (PR/CR) DVIDEO/AUDIO INPUT/OUTPUT section AUDIO IN/ OUT jacks Connects to the video and audio jacks of a VCR, DVD player, etc. (page 2327). VIDEO IN/ OUT jacks* EAUDIO INPUT/OUTPUT section AUDIO IN/ OUT jacks C

43、onnects to a Super Audio CD player, CD recorder, etc. (page 19, 23). CSPEAKERS section Connects to speakers (page 17). Connects to sub woofer (page 17). White (L) Red (R) Yellow White (L) Red (R) * You can watch the selected input image when you connect the HDMI OUT or MONITOR OUT jack to a TV (page

44、 23). FANTENNA section FM ANTENNA jack Connects to the FM wire antenna supplied with this receiver (page 28). AM ANTENNA terminals Connects to the AM loop antenna supplied with this receiver (page 28). 7 STR-K990 You can use the supplied remote to operate the receiver and to control the Sony audio/v

45、ideo components that the remote is assigned to operate. You can also program the remote to control non-Sony audio/video components. For details, see “Programming the remote” (page 65). RM-AAP017 Remote commander SYSTEM STANDBY TUNING DISC SKIP MUTING TOP MENU MENUF1 TV INPUTWIDE F2 TV VOL MASTER VOL

46、 TV CH PRESET TUNING + GUIDEDISPLAY RETURN/ EXIT OPTIONS TOOLS REPLAY ADVANCE TV VIDEO 1 VIDEO 2 VIDEO 3DVD SATTVTUNER 2CHA.F.D.MOVIEMUSIC SLEEPFM MODE D. TUNING SA-CD/CD AUXDMPORTRECEIVER RM SET UP ?/1 MEMORY . mM xX MENU H CLEAR 10 / b)Press to skip tracks of the VCR, CD player, VCD player, LD player, DVD player, MD deck, DAT deck, tape deck, Blu-ray disc recorder, PSX, DVD/VHS COMBO, or DVD/HDD COMBO. m/Mb)Press to search tracks in the forward/ backward direction of the CD player, VCD player, DVD player, LD player, MD deck, Blu-ray disc recorder, PSX, DVD/VHS COMBO, or DVD/HDD COMBO.