Sony-STRDE245-rec-sm维修电路原理图.pdf

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1、STR-DE245/DE345 AEP Model UK Model E Model Australian Model STR-DE245/DE345 US Model Canadian Model Chinese Model PX Model STR-DE345 SERVICE MANUAL FM STEREO FM-AM RECEIVER SPECIFICATIONS Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol ; “AC-3” a

2、nd “Pro Logic” are trademarks of Dolby Laboratories Licensing Corporation. Photo: STR-DE345 Continued on next page POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 8-ohm load, both channels driven, from 20 20,000 Hz rated 100 watts per channel minimum RMS power, with no more than 0.09% total harmonic

3、 distortion from 250 milliwatts to rated output. Amplifier section Rated Power Output at(8 at 20 Hz 20 kHz, Stereo ModeTHD 0.09 %) 100W + 100W Reference Power Output(8 at 1 kHz, THD 0.7%) Front: 100 W + 100 W Center: 100 W Rear: 100 W + 100 W Frequency responseTV/SAT, CD, MD/TAPE, VIDEO, 5.1CH/DVD 1

4、0 50 kHz dB Inputs SensitivityImpedanceS/N CD, 5.1CH/ DVD, MD/TAPE,150 mV 50 85 dB TV/SAT, kilohms VIDEO OutputsMD/TAPE REC 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 i

5、mpedance headphones MutingFull mute BASS BOOST+6 dB at 70 Hz TONE6 dB at 100 Hz and 10 kHz Tuner section FM Stereo, FM/AM superheterodyne tuner FM tuner section Tuning range87.5 108.0 MHz Antenna terminals75 , unbalanced Intermediate frequency10.7 MHz SensitivityMono: 18.3 dBf, 4.5 V Stereo: 38.3 dB

6、f, 45 V Usable sensitivity11.2 dBf, 2 V (IHF) S/NMono: 76 dB Stereo: 70 dB HarmonicMono: 0.3 % distortion at 1 kHzStereo: 0.5 % Separation45 dB at 1 kHz Frequency response30 Hz 15 kHz dB Selectivity60 dB at 400 kHz +0.5 2.0 +0.5 2.0 AM tuner section Tuning range10 kHz interval* 530 1,710 kHz 9 kHz i

7、nterval 531 1,710 kHz AntennaLoop antenna Intermediate frequency450 kHz Usable sensitivity50 dB/m (at 1,000 kHz or 999 kHz) S/N54 dB (at 50 mV/m) Harmonic distortion0.5 % (50 mV/m, 400 Hz) SelectivityAt 10 kHz: 40 dB At 9 kHz: 35 dB * You can change the AM tuning interval between 9 kHz and 10 kHz. T

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

9、k STEP” appears. Note that all preset stations, index names and sound field are cleared after you make the procedure above. Ver 1.0 2000. 02 RadioFans.CN 收音机爱 好者资料库 2 VIDEO section InputsVIDEO, TV/SAT, 5.1CH/DVD: 1 Vp-p 75 OutputsVIDEO, MONITOR: 1 Vp-p 75 General SystemTuner section: PLL quartz-lock

10、ed digital synthesizer system Preamplifier section: Low-noise NF type equalizer Power amplifier section: Pure-complementary SEPP Power requirements120 V AC, 60 Hz Power consumption235 W Dimensions17 56/8 12 inches) (430 145 304 mm) Mass (Aporox.)7.3 kg (16 lb 2 oz) Supplid accessoriesFM wire antenna

11、 (1) AM loop antenna (1) Remote commander (remote) (1) Size AA (R6) batteries (2) Operating Instructions of the remote RM-PP404 Design and specifications are subject to change without notice. MODEL IDENTIFICATION BACK PANEL Parts No. MODELPARTS No. DE345: US model4-226-462-0s DE345: Canadian model4-

12、226-462-1s DE345: Australian model4-226-462-2s DE345: Singapore, Malaysia model4-226-462-3s DE345: Chinese model4-226-462-4s DE345: E, Saudi Arabia, PX model4-226-462-5s DE345: AEP model4-226-462-6s DE345: Russian, East European model4-226-462-7s DE345: Mexican model4-226-462-8s DE345: Argentine mod

13、el4-226-462-9s DE245: Australian model4-226-468-2s DE245: Singapore, Malaysia model4-226-468-3s DE245: E, Saudi Arabia model4-226-468-4s DE245: AEP, UK model4-226-468-5s DE245: Mexican, Russian, East European model 4-226-468-6s RadioFans.CN 收音机爱 好者资料库 3 SAFETY-RELATED COMPONENT WARNING! COMPONENTS I

14、DENTIFIED 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

15、, 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

16、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

17、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 accur

18、ate 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 To Exposed Metal Parts on Set 0.15 F 1.5 k AC Voltmeter (0.75 V) Earth Ground

19、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 ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LE

20、S 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. Block Diagram 7 3-2. IC Block Diagrams 8 3-3. IC Pin Function Description 8 3-4. Circuit Boards Location 9 3-5. Printed Wiring Board Main Section 10 3-6. Schematic

21、 Diagram Main Section (1/3) 11 3-7. Schematic Diagram Main Section (2/3) 12 3-8. Schematic Diagram Main Section (3/3) 13 3-9. Printed Wiring Board Panel Section 14 3-10.Schematic Diagram Panel Section 15 3-11.Printed Wiring Board Power Section 16 3-12.Schematic Diagram Power Section 17 3-13.Printed

22、Wiring Board Video Section 18 3-14.Schematic Diagram Video Section 18 4. EXPLODED VIEWS 4-1. Front Panel Section 19 4-2. Chassis Section 20 5. ELECTRICAL PARTS LIST 21 4 SECTION 1 GENERAL Front Panel 1 qs 45678 9qa 2 3 0 1 I/1 (POWER) button 2 SPEAKERS ON/OFF SWITCH button 3 PHONE jack 4 VIDEO butto

23、n TV/SAT button 5.1CH/DVD button MD/TAPE button CD button TUNER button 5 SOUND FIELD ON/OFF, MODE + , buttons BASS + , buttons TREBLE + , buttons 6 MENU , + , buttons 7 MASTER VOLUME control 8 MUTING button BASS BOOST botton 9 PRESET/PTY SELECT + , buttons TUNING + , buttons FM/AM button FM MODE but

24、ton SHIFT button MEMORY button 0 SET UP button NAME button ENTER button qa SOUND CONTROL LEVEL,SUR buttons qs DIMMER button DISPLAY button 5 Rear Panel This section is extracted from instruction manual. 6 SECTION 2 TEST MODE SOFTWARE VERSION DISPLAY MODE * The software version is displayed. * Proced

25、ure: While depressing the TUNER and the VIDEO buttons simultaneously, press the power ?/1 button to turn on the main power. The model name, destination and the software version are displayed. FLUORESCENT INDICATOR TUBE TEST MODE * All fluorescent segments are tested. When this test is activated, all

26、 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 simultaneously, press the power ?/1 button to turn on the main power. 1.All segments turn on. SET UP, SOUND FIELD, BASS BOOST and MUTING LED turn on. 2.Press

27、the VIDEO button, confirm display BASS BOOST, MUTING, SET UP and NAME LED turn on. 3.Press the VIDEO button, confirm display SOUND CONTROL LEVEL, SOUND CONTROL SUR and SOUND FIELD LED turn on. 4.Press the VIDEO button, All segments turn off. 5.Every pressing of the VIDEO button turns on each segment

28、 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.) FACTORY SET MODE * All preset contents are reset to the default setting. * Procedure: While depressing the VIDEO and the CD buttons simultaneously, press

29、 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 CLEAR MODE * All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. * Proc

30、edure: While depressing the TUNER and the MD/TAPE buttons simultaneously, press the power ?/1 button to turn on the main power. The message INITIAL appears and initialization is performed. SURROUND CLEAR MODE * The preset sound field is cleared when this mode is activated. Use this mode before retur

31、ning 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. AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE * Either the 9 kHz step

32、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 10 k STEP appears. Select the de

33、sired step. * For US/Canadian/E model only KEY CHECK MODE * Button check * Procedure: While depressing 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 and SPEAKERS counts down the b

34、uttons. The buttons which are already counted once are not counted again. When all buttons are pressed “RES 00 KEY” appears. When MASTER VOLUME is rotated in clockwise direction, “VOL MIN”, “VOL 1” to “VOL 30”, “VOL MAX” appear. 77 SECTION 3 DIAGRAMS 3-1. BLOCK DIAGRAM TUNER UNIT RESET Q201,202 Q659

35、 : VIDEO Signal Path RCH is omitted : 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 MD/ TAPE CD OUTPUT INPUT OUTPUT INPUT VIDEO 5.1 CH/DVD FRONT REAR CENTER WOOFER J501 J401 LT IN61 FC L IN

36、34 FC SL IN32 FC C IN62 DATA52 DOLBY SURROUND PROCESSOR IC202 16L OUT CLK53 ENABLE51 2 18SL OUT 10C OUT DATA CLK 4 14 16 13 X1 4.33MHz RDS IC1 AEP,UK,Russian, East European MODEL AUDIO SELECT IC201 IN F266 IN A271 REC OUT 2A61 IN B270 IN G263 SW CH N IN27 D OUT259 49L OUT REC OUT 2B61 43SL OUT 37C O

37、UT 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 5NF1 LIMITER Q701 3-V OUT1 LIMITER Q702 BOOSTER Q703 BOOSTER Q704 CURRENT DETECT Q705,706 OVER LOAD DETECT

38、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 Q503 BOOSTER Q504 CURRENT DETECT Q505,506 OVER LOAD DETECT Q507,509 OVER LOAD DETECT Q657,658 Q707 D706 D606

39、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 C R-CH R-CH R-CH SPEAKERS FRONT PHONES SPEAKERS REAR SPEAKERS CENTER TM601 TM602 SUB WOOFER J403 5.1CH (VIDE

40、O IN) TV/LD 5.1 IN J281 IN OUT OUT J282 VIDEO1 MONITOR DE345 MODEL V312 V11 OUT5 V23 M OUT10 13S1 2S2 4S2 11M VIDEO SELECT IC281 21 AUTO STOP S12 S23 IC MUTE4 22 T MUTE 23 STEREO IN 28 SIGNAL 24 PLL DATA 19 S DATA 18 S CLK 20 S CE 38 RDS CLK 15 RDS DATA 8 S CLK 9 S CE 17 S CE 7 S DATA 59 FUNC MUTE 4

41、7 PROTECT AUTO STOP T MUTE STEREO SIGNAL PLL DATA S DATA S CLK S CE CLOCK S CE DATA 54 H/P RY 53 FRONT RY 51 REAR RY 52 CTR RY 55 WOOFER RY 100 9133 30 A/D1A/D4 FUNCTION KEY S206-235 S236,237 CE MODEL ONLY LED DRIVE Q126 MUTING LED 45 S FIELD LED 68 B.B LED 69 SURR LED 66 LEVEL LED 65 NAME LED 64 SE

42、TUP LED 63 LED DRIVE Q210-215 D216 MUTING D210-215 SYSTEM CONTROL IC103 RV201 ENCODER 23 ENCODER 50 ENCODER 49 SYS POWER 56 SP SW 61 SYSTEM POWER S200 SP S201 ON OFF 90 8078 75 . DIG1-10S1-S15 FLUORESCENT INDICATOR TUBE F1F2 FL201 10RESET 39STOP 26SIRCS REMOTE CONTROL RECEIVER 21 IC203 POWER CONTROL

43、 IC950 58 3 6 +5.6V REG Q951 D201 D202 D910-913 AC IN T972 RY901 D915D914 RELAY DRIVE Q470 D820-823 46VDD 34VDD 16VDD 1VDD -7V REG 32 +7V REG 31 +5V REG 31 +5V REG 31 +9V REG 31 DOLBY SURR +9V DISPLAY +5V(A) AUDIO +7V AUDIO -7V TUNER,RDS AUDIO +5V(B) IC805 IC803 IC804 IC807 IC802 POWER RY 48 RELAY +

44、B +12V REG 31 POWER AMP +12V IC801 -24V REG Q801 FL201 -24V -B SW Q715 POWER AMP -B D824 D802 T901 POWER AMP +B 240V 220V 120V 0V VOLTAGE SELECTOR E,Saudi Arabia,PX MODEL S901 1211 X1 X2 X201 5.00MHz 16 F1 F2 88 3-2. IC BLOCK DIAGRAMS IC281NJM2279 (VIDEO BOARD) VIN3V- 14 SW2 13 VIN1 12 MUTE1 11 VOUT

45、1 10 NC 9 V+ 8 1 SW1 2 AMP VIN2 3 MUTE2 4 VOUT2 5 GND2 6 GND1 7 AMP IC701, IC702uPC2581V (MAIN BOARD) PROTECTOR DRIVE 123456789 10 11 12 13 14 15 PRE DRIVE PRE DRIVE BIAS CIRCUIT REG MUTE +VOUT1 VOUT1 COMP1 NF1 IN1 GND IN2 NF2 COMP2 VOUT2 +VOUT2 VCC1 VCC2 VEE DRIVE IC501STK350-230 (MAIN BOARD) 1 2 3

46、 4 5 6 7 8 9 TR3R1 R2 TR4 TR6 TR7 R4 R9 TR5 TR1 TR2 R6 D4 D3 R7R8 TR8 D1 D2R5 R3 INPUT NF -VEOUT +VEOUT VSS GND VCC SUB IC1BU1924 (MAIN BAORD) 12345678 910111213141516 QUAL RDATA VREF VDD1 VSS1 MUX VSS3 CMP RCLK XO XI (NC) VDD2 VSS2 T1 T2 8TH SWITCHED CAPACITOR FILTER PLL 57KHz RDS/ARI BIPHASE DECOD

47、ER DEFFERENTIAL DECODER PLL 1187.5Hz TEST CLOCK IC950NJM2103 (POWER BOARD) 1 2 3 45 6 7 8 V+ VSB/SESIN VSA RESET GND OUTC VSC CR VREF + + + Q RS 3-3. IC PIN FUNCTION DESCRIPTION IC103 PD780205GF (DISPLAY BOARD) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

48、31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 I/O I O O O O O O I I O O O O I O I I I I I I I I I I I O I O I I Description Power supply to -com Control Video IC switching Control Video IC switching Control mute of Video IC Volume IC data Volume IC clock Volume IC enable Read -com rese

49、t signal For -com clock Programming pow. supply No use Read decoded RDS data Power supply to -com Chip enable for ICs Output clock signal Output data signal Chip enable for ICs Tuner has tuned to a freq. Mute tuner during scanning Tuned freq. has stereo Input tuner freq. data Analog ground Read remote comm. signal Detect RDS signal level Read version setting Read key push signal Read key push signal Read key push signal Read key push signal Analog Power Supply Analog reference groun