Sony-STRK502-rec-sm维修电路原理图.pdf

STR-DE575/K502/K502P US Model STR-DE575/K502/K502P Canadian Model STR-DE575/K502P E Model Australian Model STR-K502P SERVICE MANUAL FM STEREO FM-AM RECEIVER Sony Corporation Audio Entertainment Group General Engineering Dept. 9-873-862-11 2001D1600-1 2001.4 Continued on next page SPECIFICATIONS Ver 1.0 2001. 04 Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC” are trademarks of Dolby Laboratories Licensing Corporation. AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: 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% total harmonic distortion from 250 milliwatts to rated output (USA model only). Amplifier section (8 ohms 20 Hz - 20 kHz, THD 0.09%) 100 W + 100 W (8 ohms at 1 kHz, THD 0.7%) Front1): 100 W/ch Center1): 100 W Surround1): 100 W/ch 1) Depending on the sound field settings and sources, there may be no sound output. MULTI CH IN, CD, MD/TAPE, DVD/ LD, TV/SAT, VIDEO*, AUX: 10 Hz - 50 kHz +0.5/ 2 dB (with sound field and equalizer bypassed) MULTI CH IN, CD, DVD/LD, MD/ TAPE, TV/SAT, VIDEO*, AUX: Sensitivity: 250 mV Impedance: 50 kilohms S/Na): 96 dB (A, 250 mVb) a) Input short. b) Weighted network, input level. DVD/LD (coaxial): Sensitivity: Impedance: 75 ohms S/N: 100 dB (A, 20 kHz LPF) (Optical): Sensitivity: Impedance: S/N: 100 dB (A, 20 kHz LPF) MD/TAPE, (OUT); VIDEO*, (AUDIO OUT): Voltage: 250 mV, Impedance: 10 kilohms SUB WOOFER: Voltage: 2 V Impedance: 1 kilohms PHONES: Accepts low- and high-impedance headphones 6 dB DVD/LD, TV/SAT 48 kHz (TV/SAT, MD/ TAPE OPTICAL IN) 96 kHz (DVD/LD OPTICAL IN, COAXIAL IN) Sampling Frequency EQ Outputs Frequency response Inputs (Analog) Inputs (Digital) Reference Power Output Rated Power Output at Stereo mode Photo : STR-DE575 RadioFans.CN 收音机爱 好者资料库 2 STR-DE575/K502/K502P 0.5 % (50 mV/m, 400 kHz) At 9 kHz: 35 dB At 10 kHz: 40 dB c) You can change the AM tuning interval to 9 kHz. After tuning in any AM station, turn off the receiver. Hold down the TUNING + button and press the ?/1 button. All preset stations will be erased when you change the tuning interval. To reset the scale to 10 kHz, repeat the procedure. Video section Video: 1 Vp-p 75 ohms S-video*: Y: 1 Vp-p 75 ohms C: 0.286 Vp-p 75 ohms Video: 1 Vp-p 75 ohms S-video*: Y: 1 Vp-p 75 ohms C: 0.286 Vp-p 75 ohms General Tuner section: PLL quartz-locked digital synthesizer system Preamplifier section: Low-noise NF type equalizer Power amplifier section: Pure-complementary SEPP FM tuner section 87.5 - 108.0 MHz 75 ohms, unbalanced 10.7 MHz Mono: 18.3 dBf, 2.2 V/75 ohms Stereo: 38.3 dBf 22.5 V/75 ohms 11.2 dBf, 1 V/75 ohms Mono: 76 dB Stereo: 70 dB Mono: 0.3% Stereo: 0.5% 45 dB at 1 kHz 30 Hz - 15 kHz +0.5/2 dB 60 dB at 400 kHz AM tuner section With 10-kHz tuning scale: 530 - 1710 kHzc) With 9-kHz tuning scale: 531 - 1710 kHzc) Loop antenna 450 kHz 50 dB/m (at 1,000 kHz or 999 kHz) 54 dB (at 50 mV/m) 120 V AC, 60 Hz Models of area code U: 220W In standby condition: 1 W Models of area code CA: 315 VA In standby condition: 1 W 1 switched, total 120 W/1A Max 430 308.5 157.5 mm (14.5 10.4 5.3 in.) including projecting parts and controls 7.5 kg (16 lbs. 9 oz.) 7.4 kg (16 lbs. 6 oz.) Design and specifications are subject to change without notice. FM wire antenna (1) AM loop antenna (1) STR-DE575 only STR-K502 only Model of area code U only - Remote commander RM-U305 (remote) (1) Model of area code CA only - Remote commander RM-PP505 (remote) (1) Remote commander RM-U305 (remote) (1) R6 (size-AA) batteries (2) * STR-DE575 only Tuning range Antenna terminals Intermediate frequency Sensitivity Usable sensitivity S/N Harmonic distortion at 1 kHz Separation Frequency response Selectivity Tuning range Antenna Intermediate frequency Usable sensitivity S/N Harmonic distortion Selectivity Inputs Outputs System Supplied accessories Mass (Approx.) Dimensions AC outlets Power consumption Power requirements RadioFans.CN 收音机爱 好者资料库 3 STR-DE575/K502/K502P 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 WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. After correcting the original service problem, perform the following safety checks 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 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 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 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 operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT Parts No. MODEL IDENTIFICATION BACK PANEL ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. PARTS No. 4-232-240-0s 4-232-240-1s 4-232-240-3s 4-232-240-4s 4-232-240-5s 4-232-240-6s 4-232-240-7s 4-232-240-8s MODEL DE575 : US DE575 : Canadian K502P : US K502P : Canadian K502P : Australian K502P : Singapore K502P : Mexican K502: US To Exposed Metal Parts on Set 0.15 F 1.5 k AC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. 4 STR-DE575/K502/K502P TABLE OF CONTENTS 1. GENERAL 5 2. TEST MODE 7 3. DIAGRAMS 3-1.Circuit Boards Location . 9 3-2.Block Diagrams . 10 Main Section . 10 Display/Power Section. 11 3-3.Printed Wiring Board Digital Section . 12 3-4.Schematic Diagram Digital Section (1/3) . 13 3-5.Schematic Diagram Digital Section (2/3) . 14 3-6.Schematic Diagram Digital Section (3/3) . 15 3-7.Printed Wiring Board Main Section . 16 3-8.Schematic Diagram Main Section (1/3) . 17 3-9.Schematic Diagram Main Section (2/3) . 18 3-10. Schematic Diagram Main Section (3/3) . 19 3-11. Printed Wiring Board Display Section . 20 3-12. Schematic Diagram Display Section . 21 3-13. Printed Wiring Board Video Section . 22 3-14. Schematic Diagram Video Section . 23 3-15. Schematic Diagram Power Section . 24 3-16. IC Block Diagrams. 25 3-17. IC Pin Function Description. 27 4. EXPLODED VIEWS 4-1.Front Panel Section . 29 4-2.Chassis Section. 30 5. ELECTRICAL PARTS LIST 32 5 STR-DE575/K502/K502P SECTION 1 GENERAL MULTI CHANNEL DECODING INPUT MODE MUTING VIDEO 1 MD/TAPE VIDEO 2 CD DVD/LD TUNER TV/SAT AUX DISPLAY DIMMER PHONES SPEAKERS / MEMORYSHIFTFM MODEFMAM EQ SURR LEVEL SET UP NAME A ENTER A.F.D. SOUND FIELDMULTI CH IN EQUALIZERCINEMA STUDIO EX MODE2CH PRESET TUNINGTUNING + BC MASTER VOLUME + 89 0qaqs 1 qdqf 2 34567 m 1 ?/1 switch Press to turn the receiver on and off. 2 DISPLAY button Press repeatedly to change the information on the display window as follows: Index name of the component or the preset station* m FUNCTION button indication or frequency* m Sound field applied to the program source * Index name appears only when you have assigned one to the component or preset station (see page 41). Index name does not appear when only blank spaces have been entered, or it is the same as the function button. * Frequency appears only when the tuner is selected. 3 DIMMER button Press repeatedly to adjust the brightness of the display. When you want to turn off the display, set in the “DIM.RANGE” parameter in the SET UP menu (page 45). 4 5 The following buttons operate the built-in tuner. For details, see “Receiving Broadcasts” starting from page 38. PRESET TUNING +/ buttons Scan all preset stations. TUNING +/- buttons Scan all the available radio stations. MEMORY button Press to memorize a preset station. SHIFT button Selects a memory page for preset stations. FM MODE button If “STEREO” flashes in the display and the FM stereo reception is poor, press this button. You will not have the stereo effect but the sound is improved. FM button Selects the FM band. AM button Selects the AM band. MULTI CHANNEL DECODING indicator This indicator lights up when the unit is decoding signals recorded in a multi channel format. 6 Use the CINEMA STUDIO EX buttons to enjoy the CINEMA STUDIO EX sound effects. A/B/C buttons Press to activate the CINEMA STUDIO EX A, B or C sound field (page 29). 7 Use the SOUND FIELD buttons to enjoy surround sound. For details, see “Enjoying Surround Sound” starting from page 27. A.F.D. button / indicator Press to set the receiver to automatically detect the type of audio signal being input and perform proper decoding (if necessary). MODE button / indicator Press to activate the sound field selection mode (page 28). 2CH button / indicator Press to output sound from only the front (left and right) speakers. 8 INPUT MODE button Press to select the input mode for your digital components (DVD/LD, TV/SAT). Each press switches the input mode of the currently selected component. SelectTo AUTOGive priority to digital signals when there are both digital and analog connections. If there are no digital signals, analog is selected DIGITAL (OPTICAL)Specify the digital audio signals input to the DIGITAL OPTICAL input jacks DIGITAL (COAXIAL)Specify the digital audio signals input to the DIGITAL COAXIAL input jacks (DVD/LD only) ANALOGSpecify the analog audio signals input to the AUDIO IN (L and R) jacks Note If 96 kHz digital signal is input, the tone, sound field and surround parameters do not function. 9 Function buttons Press one of the buttons to select the component you want to use. To selectPress VCRVIDEO DVD or LD playerDVD/LD TV or satellite tunerTV/SAT MD or Tape deckMD/TAPE CD playerCD Built in tunerTUNER An audio componentAUX After selecting the component, turn on the component you selected and play the program source. After selecting VCR, DVD player, or LD player, turn on the TV and set the TVs video input to match the component you selected. 0 MASTER VOLUME control After turning on the component you selected, rotate to adjust the volume. qa MUTING button Press to mute the sound. MUTING appears in the display when the sound is muted. qs EQUALIZER button Press to turn the equalizer on or off. The EQ indicator in the display lights when the equalizer is turned on. When you adjust the equalizer using the EQ parameters (page 36) the settings are stored automatically and can be reproduced wherever you turn on the equalizer. The equalizer is not compatible with 96 kHz digital audio signals and during MULTI CH IN input. z When you want to listen to an analog source without any digital processing Do the following to bypass the sound field and equalizer circuits. 1 Press 2CH. 2 Press EQ to turn off the EQ indicator. The result will be a sound that is highly faithful to the program source. qd MULTI CH IN button Press to enjoy the audio source connected to the MULTI CH IN jacks with the video from the selected component. Press again to cancel MULTI CH IN. When the MULTI CH IN is selected, the tone, equalizer, and sound field effects do not function. qf SPEAKERS button Press SPEAKERS button to ON. PHONES jack Connects headphones. When you connect the headphones, no sound will come from the speakers. This section is extracted from instruction manual. 6 STR-DE575/K502/K502P MULTI CHANNEL DECODING INPUT MODE MUTING VIDEO 1 MD/TAPE VIDEO 2 CD DVD/LD TUNER TV/SAT AUX DISPLAY DIMMER PHONES SPEAKERS / MEMORYSHIFTFM MODEFMAM EQ SURR LEVEL SET UP NAME A ENTER A.F.D. SOUND FIELDMULTI CH IN EQUALIZERCINEMA STUDIO EX MODE2CH PRESET TUNINGTUNING + BC MASTER VOLUME + w;waws qg qhqjqk ql qg EQ button Press to activate the equalizer parameters (page 36). The indicator on the button lights up and you can adjust the various equalizer parameters. qh SURR button Press to activate the surround parameters (page 34). The indicator on the button lights up and you can adjust the various surround parameters (effect level, wall type, etc.). qj LEVEL button Press to activate the speaker level parameters (page 35). The indicator on the button lights up and you can adjust the various speaker level parameters (front balance, surround balance, etc.). qk SET UP button Press to activate the setup mode, then use the cursor buttons (wa) to select any of the following indications. You can then make various settings using the jog dial (ws). When you selectY ou can Speaker typeSpecify the type of speakers. (page 17) Speaker setupSpecify the front, center, surround speaker sizes, the surround speaker position, and whether or not you are using a sub woofer. (page 17) When you selectY ou can Speaker DistanceSpecify the front, center, and surround speaker distances. (page 19) MULTI CH IN video input Specify the video input to be used with the audio signals from the MULTI CH IN jacks. (page 45) Dimmer rangeSpecify the display to turn off when you press the DIMMER button several times. (page 45) ql NAME button Press to activate the name function and enter names for preset stations and program sources (page 43). w; ENTER button Press to enter individual characters for the preset station and program source names. wa Cursor buttons (/) Press to select various speaker level, surround, and equalizer parameters (etc.). ws Jog dial Turn to adjust the selected speaker level, surround, and equalizer parameters (etc.). 7 STR-DE575/K502/K502P SECTION 2 TEST MODE FACTORY PRES