Sony-STRDE425-rec-sm维修电路原理图.pdf

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1、STR-DE425 US Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model SERVICE MANUAL FM STEREO/FM-AM RECEIVER Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY”, “PRO LOGIC” and the double-D symbol are trademarks of Dolby Laboratories Licensing Co

2、rporation. MICROFILM SPECIFICATIONS Amplifier section Power output Stereo mode(DIN 1 kHz, 4 ohms) 90 W + 90 W Surround(DIN 1 kHz, 4 ohms) modeFront: 90W/ch Centre: 90W (only in PRO LOG IC MODE) REAR: (DIN 1 kHZ, 8ohms) 45 W/ch 5.1/DVDFront: 90 W/ch INPUT * mode(DIN 1 kHz, 4 ohms) Centre: 90 W (DIN 1

3、 kHz, 4 ohms) Rear: 45 W/ch (DIN 1 kHz, 8 ohms) FrequencyPHONO: RIAA responseequalization curve 0.5 dB TV / LD, CD, TAPE / MD, VIDEO, 5.1/DVD INPUT: 10Hz - 50kHz 1dB Input Sensitivity Impedance S/N (Weighting network, input level) PHONO2.5mV5074 dB (MM)kilohms72 dB* (A, 2.5 mV) CD, 5.1/DVD200 mV INP

4、UT* 5082 dB TAPE/MD,kilohms82 dB* TV/LD,150 mV(A, 150 mV) VIDEO *78IHF OutputsTAPE/MD REC OUT: Voltage: 150 mV, Impedance: 10 kilohms VIDEO AUDIO OUT: Voltage: 150 mV, Impedance: 10 kilohms WOOFER/MIX AUDIO OUT: Voltage: 2V Impedance: 10 kilohms PHONES: Accepts low and high impedance headphones Muti

5、ngFull mute BASS BOOST+10dB at 70 Hz TONE8dB at 100 Hz and 10 kHz FM tuner section Tuning range87.5 108.0 MHz Aerial terminals75 ohms, unbalanced SensitivityMono: 18.3 dBf, 2.2V /75 ohms Stereo: 38.3 dBf, 22.5V /75 ohms Usable sensitivity11.2 dBf, 1V /75 ohms (IHF) S/NMono: 76 dB Stereo: 70dB Harmon

6、icMono: 0.3 % distortion atStereo: 0.5 % 1 kHz Separation45dB at 1 kHz Frequency30 Hz 15kHz +0.5 dB response Selectivity60 dB at 400 kHz 2 Continued on next page AM tuner section Tuning range531 1602 kHz AerialLoop aerial Usable sensitivity50 dB/m (at 999 kHz) S/N54 dB(at 50 mV/m) Harmonic0.5%(50 mV

7、/m, 400Hz) distortion Selectivity35 dB Video section InputVIDEO 1, 2, TV: 1 Vp-p 75 ohms OutputVIDEO 1, 2, MONITOR: 1 Vp-p 75 ohms General SystemTuner section; PLL quartz-locked digital synthesizer system Preamplifier section: Low-noise NF type epualizer Power amplifier section: Pure-complimentary S

8、EPP Power230 V AC, 50/60 Hz requirements Power230 W consumption AC outletsSwitched 100 W (except for the U.K. model) RadioFans.CN 收音机爱 好者资料库 2 1.GENERAL 3 2.TEST MODE4 3.DIAGRAMS 3-1.Circuit Boards Location 5 3-2.Block Diagram 7 3-3.Schematic Diagram Display Section 9 3-4.Printed Wiring Board Displa

9、y Section 11 3-5.Schematic Diagram Power Section 13 3-6.Printed Wiring Board Power Section 15 3-7.Printed Wiring Board Main Section 17 3-8.Schematic Diagram Main Section (1/3) 19 3-9.Schematic Diagram Main Section (2/3) 21 3-10. Schematic Diagram Main Section (3/3) 23 3-11. IC Pin Function Descripti

10、on25 3-12. IC Block Diagrams 27 4.EXPLODED VIEWS 4-1.Front Panel Section 29 4-2.Chassis Section30 5.ELECTRICAL PARTS LIST31 TABLE OF CONTENTS After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, meta

11、l 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 (50

12、0 microampers). 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 suita

13、ble 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 a

14、ll battery operated digital multimeters that have a 2V AC 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. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK

15、 ! OR DOTTED LINE WITH MARK ! 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. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS

16、 IDENTIFS PAR UNE MARQUE ! 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. Dimensions430 145 295 mm Mass(Approx.)S

17、TR-DE425: 7.9 kg SuppliedFM wire aerial (1) accessoriesAM loop aerial (1) Remote controller (remote) (1) Size AA (R6) batteries (2) Design and specifications are subject to change without notice. Specifications indicated are measured at 230 VAC, 50 Hz RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 GENERAL 1235

18、6 789!?!? !? !?!?!? !?!? !?!? ? ? ? ? ? ? #? #? 4 123457 8 6 9!?!?!?!? ? !?!? 1 POWER switch (I/u) 2 CENTER LEVEL +, buttons 3 REAR LEVEL +, buttons 4 PRO LOGIC, C.STUDIO, HALL indicators 5 5.1/DVD INPUT, BASS BOOST indicators 6 MASTER VOLUME control 7 BALANCE control 8 TREBLE control 9 BASS control

19、 ! MUTING button/indicator ! SURROUND ON/OFF button ! SURROUND EFFECT/DELAY, MODE buttons ! SET UP, 5.1/DVD INPUT, BASS BOOST buttons ! TV/LD button ! TAPE/MD button ! PHONO button ! TUNER button ! CD button ! VIDEO button Numeric buttons DIRECT TUNING, SHIFT buttons CHARACTER, DISPLAY buttons MEMOR

20、Y button FM/AM button PRESET/CHARACTER +, buttons FM MODE button SLEEP button TUNING/PTY SELECT +, buttons RDS PTY, EON buttons # PHONES jack # SPEAKERS A, B ON/OFF buttons 1 ANTENNA (FM/AM) 2 5.1/DVD INPUT 3 y SIGNAL GND 4 MONITOR 5 WOOFER 6 FRONT SPEAKERS (A/B) 7 AC OUTLET 8 AC power cord 9 SURROU

21、ND SPEAKERS (CENTER) 0 SURROUND SPEAKERS (REAR) ! VIDEO ! TV/LD ! TAPE/MD ! CD ! PHONO LOCATION AND FUNCTION OF CONTROLS FRONT PANEL REAR PANEL 4 SECTION 2 TEST MODE INITIALIZATION MODE * All preset contents are cleared when this mode is activated. Use this mode before returning the product to clien

22、ts upon completion of repair. * Procedure: While depressing the VIDEO and the TAPE/MD buttons simultaneously, press the power I/u button to turn on the main power. The message INITIAL appears and initialization is performed. FLUORESCENT INDICATOR TUBE TEST MODE * All fluorescent segments are tested.

23、 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/LD and the BASS BOOST buttons simultaneously, press the power I/u button to turn on the main power. All segments turn on at the same time, then each

24、 segment turns on one after another. The message FINISH appears when this test is complete. AUTO-BETICAL CHECK MODE * To auto-scanning FM board and memorise RDS station. (FM/ RDS model only) * Procedure: While depressing the MEMORY button, press the power I/u button to turn on the main power. The me

25、ssage AUTO BET appears and each function is selected one after another. AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE * Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. (US, CND and E model only) * Procedure: Set the FUNCTION to AM. Turn off the main power. While depressin

26、g the TUNING+ button, press the power I/u button to turn on the main power. Either the message 9k STEP or 10k STEP appears. Select the desired step. REAR SPEAKER GAIN UP MODE * The rear speaker gain can be set to either NORMAL or GAIN UP. * Procedure: While depressing the -SURROUND- MODE button, pre

27、ss the power I/u button to turn on the main power. Either the message NORMAL or GAIN UP appears. When the product enters this mode again, the other gain appears. Select the desired gain. SOFTWARE VERSION DISPLAY MODE * The software version is displayed. * Procedure: While depressing the TUNER and th

28、e BASS BOOST buttons simultaneously, press the power I/u button to turn on the main power. The software version is displayed. 5 SECTION 3 DIAGRAMS 3-1.CIRCUIT BOARDS LOCATION PRIMARY board DISPLAY board SP-SW board 10 KEY board VR-TONE board VOLUME board MAIN board VIDEO board STAND BY board SP-SCRE

29、W board SECONDARY board 6 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 1/4 W or less unless otherwise specified. %: indicates tolerance. : internal component. 2 : n

30、onflammable resistor. 1 : fusible resistor. C : panel designation. U : B+ Line. V : B Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. No mark : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may

31、be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Circled numbers refer to waveforms. Signal path. F: FM Abbreviation CND: Canadian EE: East European AUS: Australian CH: Chinese G: German MY: Malaysia SP: Singapore THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AN

32、D SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.) For printed wiring boards. Note: X : parts extracted from the component side. : Through hole. : internal component. b : Pattern from the side which enables seeing. Note: The components identified by mark ! or dotted

33、 line with mark ! are critical for safety. Replace only with part number specified. Note: Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi. Waveform 1 IC201 34PIN (X1) 2 IC300 32PIN (OSC) 8MHz 4.19MHz 5.2Vp-p 0.58Vp-p

34、STR-DE425 7 8 DATA L OUTFM AMR OUT CLK CE TUNED STEREO T MUITE DO R CH FM ANT (75) AM ANT SDATA SCLK SLAT AUTO STOP STEREO T MUTE DO J401 L R PHONO R CH J402 L R R CH L R R CH J403 L R R CH L R R CH VIDEO IN EQ AMP IC402 +15V REG IC801 28 TUNER BLOCK SIGNAL SIG DET OUT L R R CH CD L R R CH TV/LD VID

35、EO OUT TAPE IN TAPE OUT J403 VIDEO IN CD TV/LD VIDEO OUT TAPE IN TAPE OUT J402 30 29 24 25 26 22 21 CL 15 DI 14 CE 13 27 23 20 S DATA S CLK SLAT AUDIO SELECTOR IC401 DATA 35 37 CLK 34 38 CE 30 24L OUT 9C OUT 22S OUT LT IN45 31 32 X301 8MHz DATA CLK S DATA S CLK SURROUND PROCESSOR IC300 J501 L R FRON

36、T R CH L R R CH REAR 501 INPUT CENTER WOOFER 5.1 I/P MONITER TV/LD VIDEO 1 IN OUT J252 J251 BASS RV421 TREBLE RV422 DBFB CONTROL Q451,452 AMP IC404 6 5 21 22 3 2 1 IC502(1/2) IC302 (1/2) IC302 (2/2) IC501(1/2) 9 +15V DI 14 CL 15 CE 13 8 20 4 11 SELECTOR IC500 S DAT S CLK S LAT 4 2 16 1314 X1 4.33MHz

37、 RDS IC1 MUTE Q361 BALANCE RV423 MUTE Q365 MUTE Q363 MUTE Q366 VOLUME RV404 SURROUND AMP M DOWN UP BIAS Q701,Q702 14 15 6 2 3 VEE VCC IN +VE -VE 13 VCC POWER AMP IC701 +B -B POWER AMP Q703 CURRENT DET Q720 POWER AMP Q704 7 1 6 5 VEE IN +VE -VE 9VCC POWER AMP IC551 +B -B POWER AMP Q553 CURRENT DET Q5

38、70 POWER AMP Q554 SURROUND AMP IC601 WOOFER AMP IC502(2/2) PROTECTOR Q721-723 RELAY DRIVE Q710 RY701 J253 C S(L) S(R) SURROUND SPEAKER WOOFER J741 PHONS TM601 FRONT SPEAKER TM701 R CH L R RELAY DRIVE Q560 RY551 RELAY DRIVE Q610 RY601 RELAY DRIVE Q367 RY301 D321 +B D311D728 D727 D726 D725 D723D203 D7

39、24 SPEAKER A SPEAKER B ON OFF ON OFF S701 R CH R CH R CH R CH BA 87 32 MOTOR DRIVER IC202 UP DOWN VIDEO SELECT IC251 V312 V11 MON10 V23 OUT5 13S1 2S2 4S2 11MUTE S158 S257 MUTE36 SYSTEM CONTROL IC201 46 RDS DATA 454545 RDS CLK 11 PLL DATA 40 T MUTE 19 STEREO 18 AUTO STOP 25 SIGNAL 12 S CE 9 S CLK 10

40、S DATA 13 S CE 53 LOW BASS DO T MUTE STEREO AUTO STOP SIG S LAT S CLK S DATA 55 MUTE S.L 54 MUTE FUNC 41 UP 42 DOWN 16 PROTECT 21 SP RY 22 SURR RY 14 REAR RY VERSION 56 X1 34 X2 35 X201 4.198MHz LED SW Q230 5.1 CH 51 HALL 39 SIMULATED 38 PROLOGIC 37 MUTING 43 5.1/ VDD MUTINGHALLPROLOGIC C STUDIO LED

41、 +5V D235D236D234D237D238 FUNCTION KEY A/D 2 27 A/D 1 28 A/D 3 26 S217-239 S241-243 S240 FUNCTION KEY S201-216 KI 1 60 KI 2 59 S200 SYSTEM POWER SYS POWER 4477 72.70 6271.80 78 S1 15G1 10 S8-15 D221-225 FL201 FLOURESCENT INDICATOR TUBE F1 F2 F1 F2 13 -15V REG IC802 23 +9V REG Q808 +15V -24V REG Q801

42、 +9V -15V +B -B -24V D802 T901 D803 F802 F801 F901 RELAY DRIVE Q809 RY801 RY852 RY851 RY801 RY901 RELAY DRIVE Q802 JW335 JW336 CNJ902 US,CND MODEL CNJ902 EXCEPT US,CND,UK MODEL EXCEPT US,CND MODEL CNP903 AC IN F902 T902 STANDBY IC950 6 58 DELAY +B SW Q951 D810-813 RESET Q201,202 REMOTE CONTROL RECEI

43、VER 21 3 D202 D201 D901 L401 LED +5V IC201 +B TUNER/RDS +5V +5.6V IC203 15BRIDGE 23POWER RY 47STOP 17RESET 49SIRCS 11 16 : FM : CD (ANALOG) Signal Path RCH is omitted : VIDEO : PHONO 46 LED SW Q231 D239 BASS BOOST LED +5V AEP, UK, G, EE MODEL EXCEPT AEP, UK, G, EE MODEL AEP, UK, G, EE MODEL BIAS Q55

44、1,Q552 3-2. BLOCK DIAGRAM STR-DE425 9 10 3-3. SCHEMATIC DIAGRAM DISPLAY SECTION STR-DE425 11 12 3-4. PRINTED WIRING BOARDS DISPLAY SECTION DISPLAY BOARD VOLUME BOARD VR-TONE BOARD 1-669-275- 11 (11) 1-669-278- 11 (11) 1-669-277- 11 (11) MEMORY DISPLAYEONPTY RDS CHARACTER PRESET CHARACTER FM/AMFM MOD

45、ESLEEP BALANCETREBLE MUTING BASS _ + _ + TUNING PTY SELECT _ + REAR LEVEL _ + CENTER LEVEL 1/ (PROLOGIC) (C.STUDIO) (HALL) 13 12514173134 35 9 9 1 14 1 (BASS BOOST) (5.1/DVD INPUT) IC201 1 24 25 4041 64 65 80 10 KEY BOARD 1-669-276- 11 (11) MODE SET UP TAPE/MD PHONOTUNERTUNER SHIFT TV/LDVIDEO CDCD E

46、FFECT/DELAY SURROUND SURROUND ON/OFF DIRECT TUNING BASS BOOST 5.1/DVD INPUT 14 09876 23451 A B TO MAIN BOARD CNS501 D TO MAIN BOARD CNP501 C TO MAIN BOARD CNS701 TO MAIN BOARD CNS204 BEBE MASTER VOLUME M B E B B B B B E E E E E RD1 RD2 RD3 RD4 RD5 RD6 RD7 RD8 RD9 RD10 RD11 RD12 RD13 RD14 RD15 RD16 R

47、D17 RD18 RD19 RD20 RD21 RD22 RD23 RD24 RD25 B E AEP,UK,G,EE MODEL AEP,UK,G,EE MODEL AEP,UK,G,EE MODEL AEP,UK,G,EE, AUS MODEL EXCEPT AEP,UK,G,EE MODEL EXCEPT AEP,UK,G,EE MODEL AEP,UK,G,EE MODEL E,SP,MY,CH,EE MODEL E,SP,MY,CH, AUS MODEL 16 (Page 17) (Page 17) (Page 17) (Page 17) 12 A B C D E F G H I J

48、 34567891011121314 Ref. No.Location Semiconductor Location Ref. No.Location D201C-4 D202C-4 D203B-4 D204B-4 D211A-10 D212B-10 D213B-10 D214B-10 D215B-10 D216B-10 D217B-10 D218B-10 D221C-9 D222C-9 D223C-9 D224C-9 D231B-3 D234C-3 D235C-12 D236B-12 D237B-12 D239C-3 IC201C-7 IC202B-2 IC203B-11 Ref. No.L

49、ocation Q201B-4 Q202B-5 Q230D-9 Q231B-3 Q361H-2 Q362H-2 Q363H-2 Q364I-1 Q365I-2 Q366I-1 STR-DE425 13 14 3-5. SCHEMATIC DIAGRAM POWER SECTION STR-DE425 12 A B C D E F G H I J 3456789101112 15 16 3-6. PRINTED WIRING BOARDS POWER SECTION AC IN STAND BY BOARD PRIMARY BOARDSECONDARY BOARD VIDEO BOARD SP-SW BOARD SP-SREW BOARD J TO MAIN BOARD CNS802 1-669-279- 11 (11) 1-669-280- 11 (11) 1-669-281- 11 (11) 1-669-283- 11 (11) 1-669-282- 11 (1