Sony-STRDE375-rec-sm维修电路原理图.pdf

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1、STR-DE375 Canadian Model AEP Model UK Model E Model SERVICE MANUAL FM STEREO FM-AM RECEIVER Sony Corporation Audio Entertainment Group General Engineering Dept. 9-873-861-11 2001D1600-1 2001.4 Continued on next page SPECIFICATIONS Ver 1.0 2001. 04 Manufactured under license from Dolby Laboratories L

2、icensing Corporation. “DOLBY” the double-D symbol ; “AC-3” and “Pro Logic” are trademarks of Dolby Laboratories Licensing Corporation. Amplifier section Rated Power Output at Stereo Mode Reference Power Output Frequency response Inputs Tuning range Antenna terminals Intermediate frequency Sensitivit

3、y Usable sensitivity S/N Harmonic distortion at 1 kHz Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section 87.5 - 108.0 MHz 75 ohms, unbalanced 10.7 MHz Mono: 18.3 dBf, 4.5 V Stereo: 38.3 dBf, 45 V 11.2 dBf, 1 V (IHF) Mono: 76 dB Stereo: 70 dB Mono: 0.3 % Stereo: 0.5 % Outputs Mutin

4、g TONE MD/TAPE OUT: Voltage: 150 mV, Impedance: 10 kilohms VIDEO AUDIO OUT: Voltage: 150 mV, Impedance: 10 kilohms SUB WOOFER: Voltage: 2 V Impedance: 1 kilohms PHONES: Accepts low and high impedance headphones Full mute 6 dB at 100 Hz and 10 kHz CD, DVD/ MULTI CH, MD/TAPE, TV/SAT, VIDEO Sensitivity

5、 150 mV Impedance 50 kilohms S/N 85 dB +0.5 2 Canadian model: (8 ohms 40 Hz - 20 kHz, less than 0.09% total harmonic distortion) 80 W + 80 W Malaysia, Singapore model (8 ohms at 1 kHz, THD 0.7%) 80 W + 80 W Other countries: (8 ohms at 1 kHz, THD 0.7%) 50 W + 50 W Canadian model: (8 ohms at 1 kHz, TH

6、D 0.7%) Front: 80 W/ch Center: 80 W Surround: 80 W/ch Malaysia, Singapore model (8 ohm at 1 kHz, THD 10%) Front: 90 W/ch Center: 90 W Surround: 80 W/ch Other countries: (8 ohms at 1 kHz, THD 10%) Front: 50 W/ch Center: 50 W Surround: 50 W/ch TV/SAT, CD, MD/TAPE, VIDEO, DVD/MULTI CH: 10 Hz - 50 kHz d

7、B RadioFans.CN 收音机爱 好者资料库 2 STR-DE375 MODEL IDENTIFICATION BACK PANEL Parts No. MODELPARTS No. AEP model4-232-119-0s UK model4-232-119-1s Malaysia,Singapore model4-232-119-3s E model4-232-119-4s Canadian model4-232-119-5s Argentina model4-232-119-7s System Power requirements Power consumption Dimens

8、ions Mass (Approx.) Supplied accessories Tuner section: PLL quartz-locked digital synthesizer system Preamplifier section: Low-noise NF type equalizer Power amplifier section: Pure-complementary SEPP Canadian model: 120 V AC, 60 Hz Malaysia, Singapore model 220-230 V AC, 50/60 Hz Other countries: 12

9、0/220/240 V AC, 50/60 Hz Canadian model: 240 VA Standby mode: 0.5 W Malaysia, Singapore model 175 W Standby mode: 0.5 W Other countries: 160 W Standby mode: 0.5 W 430 x 145 x 298 mm Malaysia, Singapore model 5.5 kg Canadian and other countries: 6 kg (13 lb 4 oz) General The specification measured is

10、 under 230 AC 50 Hz condition (Malaysia, Singapore model) Design and specifications are subject to change without notice. FM wire antenna (1) AM loop antenna (1) Remote commander (remote) (1) Size AA (R6) batteries (2) * You can change the AM tuning interval between 9 kHz and 10 kHz. Turn off the re

11、ceiver and press ?/1 (power) for more than 4 seconds until “INITIAL” appears. 1) After tuning in any AM station, turn off the receiver. 2) Hold down PRESET TUNING + button and press the ?/1 (power) button. “9k STEP” appears. To change to 10k Step, repeat step 1 and 2 until “10k STEP” appears. Note t

12、hat all preset stations, index names and sound field are cleared after you make the procedure above. Separation Frequency response Selectivity +0.5 2 AM tuner section 45 dB at 1 kHz 30 Hz - 15 kHz dB 60 dB at 400 kHz Tuning range Antenna Intermediate frequency Usable sensitivity S/N Harmonic distort

13、ion Selectivity Malaysia, Singapore model 531 - 1602 kHz (9 kHz step) Canadian model: 530 - 1710 kHz (10 kHz step)* 531 - 1710 kHz (9 kHz step)* Other countries models: 530 - 1610 kHz (10 kHz step)* 531 - 1602 kHz (9 kHz step)* Loop antenna 450 kHz 50 dB/m (at 999 kHz) 54 dB (at 50 mV/m) 0.5 % (50 m

14、V/m, 400 Hz) At 9 kHz: 35 dB At 10 kHz: 40 dB RadioFans.CN 收音机爱 好者资料库 3 STR-DE375 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 WHOS

15、E 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 m

16、etal 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

17、 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 re

18、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 2V AC

19、range are suitable. (See Fig. A) SAFETY CHECK-OUT 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. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES E

20、T 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. TABLE OF CONTENTS 1. GENERAL 4 2. TEST MODE 6 3. DIAGRAMS 3-1.Circuit Boards Location 7 3-2.Block

21、Diagram 9 3-3.Printed Wiring Board Main Section 10 3-4.Schematic Diagram Main Section (1/3) 11 3-5.Schematic Diagram Main Section (2/3) 12 3-6.Schematic Diagram Main Section (3/3) 13 3-7.Printed Wiring Board Panel Section14 3-8.Schematic Diagram Panel Section 15 3-9.Printed Wiring Board Power Sectio

22、n 16 3-10. Schematic Diagram Power Section 17 3-11. IC Block Diagrams18 3-12. IC Pin Function Description 18 4. EXPLODED VIEWS 4-1.Front Panel Section 20 4-2.Chassis Section 21 5. ELECTRICAL PARTS LIST22 4 STR-DE375 SECTION 1 GENERAL Front Panel 1 2 3 4 5qsqaqfqd q;7869 qgqhqj 1 ?/1(POWER) button 2

23、DISPLAY button 3 DIMMER button 4 PHONES jack 5 PRESET/PTY SELECT + , buttons TUNING + , buttons MEMORY button SHIFT button PTY button FM MODE button FM/AM button 6 SET UP button and indicator 7 NAME button and indicator 8 LEVEL button and indicator 9 SUR button and indicator q; VIDEO button TV/SAT b

24、utton DVD/MULTI CH button MD/TAPE button CD button TUNER button qa MENU buttons qs MENU + , buttons qd ENTER button qf SOUND FIELD ON/OFF (and indicator), MODE + , buttons qg TREBLE + , buttons BASS + , buttons qh MUTING button qj MASTER VOLUME control 5 STR-DE375 This section is extracted from inst

25、ruction manual. qs qa 3 4 5 6 7 9q; 1 2 8 1 ANTENNA (AM/FM) 2 DVD/MULTI CH 3 CD 4 MD/TAPE 5 TV/SAT 6 VIDEO 7 SUB WOOFER 8 SPEAKERS SURROUND 9 SPEAKERS CENTER q; SPEAKERS FRONT qa VOLTAGE SELECTOR (except Singapore, Malaysia and Canada models) qs AC power cord Rear Panel 6 STR-DE375 SECTION 2 TEST MO

26、DE FACTORY SET MODE * All preset contents are reset to the default setting. * Procedure: While depressing the VIDEO and the CD buttons simultaneously, press the power ?/1 button to turn on the main power. The message “FACTORY” appears and the present contents are reset to the default values. ALL CLE

27、AR MODE * All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. * Procedure: While depressing the TUNER and the MD/TAPE buttons simultaneously, press the power ?/1 button to turn on the main power. The message “I

28、NITIAL” appears and initialization is performed. FLUORESCENT INDICATOR TUBE TEST MODE * All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another. * Procedure: While depressing the TV/SAT and the CD buttons s

29、imultaneously, press the power ?/1 button to turn on the main power. 1.All segments turn on. SET UP, SOUND FIELD LED turn on. 2.Press the VIDEO button, confirm display SET UP, NAME LED turn on. 3.Press the VIDEO button, confirm display SOUND CONTROL LEVEL, SOUND CONTROL SUR and SOUND FIELD LED turn

30、on. 4.Press the VIDEO button, All segments turn off. 5.Every pressing of the VIDEO button turns on each segment one after another in the following order. (Not only the VIDEO button, but also the other buttons such as TV/SAT , MD/TAPE , CD , TUNER can be used.) AM CHANNEL STEP 9 kHz/10 kHz SELECTION

31、MODE * Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. * Procedure: Set the FUNCTION to AM. Turn off the main power. While depressing the TUNING+ button or the PRESET+ button, press the power ?/1 button to turn on the main power. Either the message “AM 9 k STEP” or “AM

32、10 k STEP” appears. Select the desired step. * For Canadian/E model only SOFTWARE VERSION DISPLAY MODE * The software version is displayed. * Procedure: While depressing the TUNER and the VIDEO buttons simultaneously, press the power ?/1 button to turn on the main power. The model name, destination

33、and the software version are displayed. AUTOBETICAL MODE (AEP Model only) * This mode is installed in the Europe models only. When this mode is used, the receiver scans the broadcasts that can be received by tuner, and sets up the broadcasts. Be sure to start scanning after connecting the antenna. *

34、 Procedure: Check that the antenna is connected. Press the power ?/1 button while pressing the MEMORY button to turn on the power. The message “Autobetical select” appears and scanning starts by tuner. SURROUND CLEAR MODE * The preset sound field is cleared when this mode is activated. Use this mode

35、 before returning the product to clients upon completion of repair. * Procedure: While depressing the SOUND FIELD ON/OFF button, press the power ?/1 button to turn on the main power. The message “SURR CLR” appears and initialization is performed. KEY CHECK MODE * Button check * Procedure: While depr

36、essing the MD/TAPE and the CD buttons simultaneously, press the power ?/1 button to turn on the main power. “RES 36 KEY” appears. Every pressing of any button other than ?/1 counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “RES 0

37、0 KEY” appears. When MASTER VOLUME is rotated in clockwise direction, “VOL MIN”, “VOL 1” to “VOL 30”, “VOL MAX” appear. 7 STR-DE375 SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION WAVEFORMS MAIN BOARD SECONDARY board PRIMARY board (except E model) VOL-SEL board (E model) MAIN board DISPLAY board HEA

38、DPHONE board POWER SWITCH board STANDBY board 1 IC1 qf 2.2Vp-p 230ns 2 IC103 qa 5.0Vp-p 200ns DISPLAY BOARD 8 STR-DE375 For schematic diagrams. Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and

39、 1/4 W or less unless otherwise specified. %: indicates tolerance. f: internal component. 2 : nonflammable resistor. 1 : fusible resistor. C : panel designation. A : B+ Line. B : B Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditi

40、ons. No mark : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Circled numbers refer to waveforms. Signal path. F: FM J: CD Abbreviation CND: Canadian model MY: Malaysia model SP: S

41、ingapore model AR: Argentina model THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.) Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specifie

42、d. Note: Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi. For printed wiring boards. Note: X : parts extracted from the component side. : Pattern from the side which enables seeing. C B These are omitted. E Q B These

43、are omitted. CE 99 STR-DE375 3-2. BLOCK DIAGRAM TUNER UNIT RESET Q201,202 Q659 Signal Path RCH is omitted due to same as LCH. : FM : CD FM AM R-CH S DATA PLL DATA S CLK S CE SIGNAL STEREO AUTO STOP T MUTE S DATA DATA OUT S CLK SLAT SIGNAL STEREO TUNED T MUTE FM AM DET OUT R OUT L OUT CD IN MD/TAPE O

44、UT MD/TAPE IN VIDEO/AUDIO OUT VIDEO/AUDIO IN DVD/ MULTI CH FRONT SURROUND CENTER WOOFER SUB J501 J401,402 RT IN61 FC R IN34 FC SR IN32 FC C IN62 DATA52 DOLBY SURROUND PROCESSOR IC202 16L OUT CLK53 ENABLE51 2 18SR OUT 10C OUT DATA CLK 4 14 16 13 X1 4.33MHz RDS IC1 AEP,UK MODELS AUDIO SELECT IC201 IN

45、F266 IN A271 REC OUT 2A61 IN B270 IN G263 SW CH N IN27 D OUT259 49L CH OUT REC OUT 2B61 43SL CH OUT 37C CH OUT 28SW CH OUT MUTE Q361 SEL OUT260 T IN258 SL CH N IN44 DATA32 CLOCK31 LATCH33 SL CH D IN45 C CH N IN38 C CH D IN39 DATA CLOCK S CE MUTE Q362 MUTE Q363 MUTE Q364 IN16 2+V OUT1 POWER AMP IC701

46、 5NF1 LIMITER Q701 3-V OUT1 LIMITER Q702 BOOSTER Q703 BOOSTER Q704 CURRENT DETECT Q705,706 OVER LOAD DETECT Q708,709 IN28 12+V OUT2 9NF2 LIMITER Q651 11-V OUT1 LIMITER Q652 BOOSTER Q653 BOOSTER Q654 CURRENT DETECT Q655,656 IN+1 6+V OUT POWER AMP IC501 2IN- LIMITER Q501 5-V OUT LIMITER Q502 BOOSTER Q

47、503 BOOSTER Q504 CURRENT DETECT Q505,506 OVER LOAD DETECT Q507,509 OVER LOAD DETECT Q657,658 Q707 D706 D606 D506 D721 PROTECT SWITCH Q722,723,725 RELAY DRIVE Q791 RY791 RELAY DRIVE Q730 RY710 D731 RELAY DRIVE Q610 RY610 D735 RELAY DRIVE Q550 RY510 D734 IC401 31 RELAY DRIVE Q470 RY470 D736 L R SR SL

48、C R-CH R-CH SPEAKERS FRONT SPEAKERS SURROUND SPEAKERS CENTER TM601 TM602 SUB WOOFER AUDIO OUT J403 21 AUTO STOP 22 T MUTE 23 STEREO IN 28 SIGNAL 24 PLL DATA 19 S DATA 18 S CLK 20 S CE 38 RDS CLK IN 15 RDS DATA 8 S CLK 9 S CE 17 S CE 7 S DATA 59 FUNC MUTE 47 PROTECT AUTO STOP T MUTE STEREO SIGNAL PLL

49、 DATA S DATA S CLK S CE CLOCK S CE DATA 54 H/P RY 61 HP SW 53 FRONT RY 51 REAR RY 52 CTR RY 55 WOOFER RY 100 9133 30 A/D1A/D4 FUNCTION KEY S202-229,231-236 S FIELD LED 68 SURR LED 66 LEVEL LED 65 NAME LED 64 SETUP LED 63 LED DRIVE Q210-213,215 D210-213,D215 SYSTEM CONTROL IC103 RV201 ENCODER 31 ENCODER 50 ENCODER 49 SYS POWER 56 MASTER VOLUME ?/1 SYSTEM POWER S200 90 8078 75 . DIG1-10S1-S15 FLUORESCENT INDICATOR TUBE F1F2 FL201 10RESET 39STOP 26SIRCS REMOTE CONTROL RECEIVER 21 IC203 POWER CONTROL IC950 58 3 6 +5.6V R