Sony-STSE370-tun-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL FM STEREO FM-AM TUNER US Model AEP Model UK model E Model Australian Model SPECIFICATIONS ST-SE370 Ver 1.0 2001.04 9-873-833-11Sony Corporation 2001D0500-1Home Audio Company C 2001.4Shinagawa Tec Service Manual Production Group FM tuner section Frequency range87.5 - 108.0 MHz (U.S. mo

2、dels: 100 kHz step, other models: 50 kHz step) Aerial terminals75 , unbalanced U.S. models: F-TYPE CONNECTOR, other models: IEC-male Intermediate frequency 10.7 MHz Sensitivityat 26 dB quieting (mono) 10.3 dBf, 0.9 V/75 at 46 dB quieting (stereo) 38.5 dBf, 23 V/75 Usable sensitivity (IHF) 10.3 dBf,

3、0.9 V/75 S/Nat 40 kHz deviation 74 dB (mono), 69 dB (stereo) Harmonic distortion0.09% (mono), 0.18% (stereo) Frequency response30 Hz - 15 kHz (+0.5/1.0 dB) Separation45 dB at 1 kHz Selectivityat 400 kHz 85 dB at 300 kHz 70 dB Outputat 40 kHz deviation 600 mV AM tuner section Frequency range MW: U.S.

4、 models:530 - 1,710 kHz (10 kHz step*) Singaporean and Australian models: 531 - 1,710 kHz (9 kHz step) Other models:531 - 1,602 kHz (9 kHz step) LW:144 - 288 kHz (1 kHz step) Intermediate frequency 450 kHz Usable Sensitivity(with AM loop aerial) MW:200 V/m LW:700 V/m Signal-to-noise ratio MW:54 dB (

5、50 mV/m, 999 kHz) LW:50 dB (50 mV/m, 216 kHz) Harmonic distortion0.3% (50 mV/m, 400 Hz) Selectivity50 dB General Power requirements U.S. models:120 V AC, 60 Hz Australian models:230 V AC, 50 Hz Other models:230 V AC, 50/60 Hz Power consumption10 W Dimensions430 x 83 x 290 mm (w/h/d) Weight2.5 kg Sup

6、plied accessories Audio cord (1) AM loop antenna (1) FM wire antenna (1) * (U.S. models only.) You can change the AM tuning interval to 9 kHz. After tuning in any AM station, turn off the tuner. Hold down the numeric button 9 and press the POWER button. To reset the scale to 10 kHz, hold down the nu

7、meric button 0 and press the POWER button to turn on the tuner. All preset stations will be erased when you change the tuning interval. Design and specifications are subject to change without notice. Photo: Black model RadioFans.CN 收音机爱 好者资料库 2 ST-SE370 TABLE OF CONTENTS 1.GENERAL.3 2.DISASSEMBLY 2-

8、1.Disassembly Flow .4 2-2.Case (407026) .4 2-3.MAIN Board .5 3.TEST MODE.6 4.ELECTRICAL ADJUSTMENTS.8 5.DIAGRAMS 5-1.Note for Printed Wiring Boards and Schematic Diagrams .9 5-2.Printed Wiring Boards MAIN Section . 10 5-3.Schematic Diagram MAIN Section . 11 5-4.Printed Wiring Boards DISPLAY Section

9、. 12 5-5.Schematic Diagram DISPLAY Section . 13 5-6.IC Pin Function Description . 14 6.EXPLODED VIEWS 6-1.Case Section . 15 6-2.Front Panel Section . 16 6-3.Chassis Section . 17 7.ELECTRICAL PARTS LIST. 18 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 O

10、N 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 PUB- LISHED BY SONY. SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing saf

11、ety 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 part to earth ground and from all exposed me

12、tal 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 instrumen

13、ts. 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” indica- tion is 0.75 V, so analog meters must have an accurate low- voltage sca

14、le. The Simpson 250 and Sanwa SH-63Trd are ex- amples 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 voltmeter (0.75 V) To Exposed Metal Parts on S

15、et Earth Ground RadioFans.CN 收音机爱 好者资料库 3 ST-SE370 SECTION 1 GENERAL This section is extracted from instruction manual. LOCATION OF CONTROLS Front Panel AUTO BETICAL SELECT (European model only) qh (7, 12) BAND qd (9, 10, 12) CHARACTER 5 (11) DIRECT 0 (9) DISPLAY 3 (10, 11, 13) ENTER 9 (9, 11, 12, 1

16、4) FM MODE qf (9, 10) MEMORY 2 (8, 11) MENU 8 (9, 11, 14) Numeric buttons qs (79) POWER 1 (7, 8, 12) PTY (European model only) qg (14, 15) RETURN 7 (9) SHIFT qa (8, 11) TUNE MODE 6 (8, 10) TUNING/SELECT 4 (712, 14) 1234567890 123564 7890qaqsqdqfqgqh 1 FM ANTENNA terminal 2 AM ANTENNA terminal 3 LINE

17、 OUT jack Rear Panel ANTENNA LINE OUT FM U 75 COAXIAL RL AM 213 RadioFans.CN 收音机爱 好者资料库 ST-SE370 4 This set can be disassembled in the order shown below. 2-1.DISASSEMBLY FLOW SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 2-2.CASE (407026) 2-2. CASE (40702

18、6) (Page 4) 2-3. MAIN BOARD (Page 5) SET 1two screws (case 3 TP2) 2two screws (case 3 TP2) 3three screws (case 3 TP2) 4case (407026) ST-SE370 5 2-3.MAIN BOARD 5MAIN board 2connector (CNP701) 2connector (CNP702) 2connector (CNP951) 2connector (CNP901) 1wire (flat type) (15 core) (CN101) 3screw (BV/RI

19、NG) 3screw (BVTP3 8 (S) 4screw (BVTT3 6 (S) 6 ST-SE370 NOTE : The preset data will be erased when this test mode is used. Therefore, take down the data before setting this mode and preset the data again after completing operations in this mode. 1. Display Tube and Key Check Mode 1-1. Display Tube Ch

20、eck 1-1-1. Turn OFF the power. 1-1-2. While pressing 1 and BAND together, turn ON POWER . 1-1-3. While continuously pressing 1 and BAND together, check the following. (1) All light up 1-2. Key Check 1-2-1. Release 1 and BAND . The KEY CHECK mode will be set. 1-2-2. All key numbers will be displayed.

21、Key Number : 23 1-2-3. Each time the key is pressed, the key number will be counted down. Each key will be counted only once, at the first time. 1-2-4. When all keys have been pressed, the process will end and the factory preset will be entered. 2. Entering the Factory Preset To skip “1. Display Tub

22、e Key Check Mode”, and factory preset : (1) Turn OFF the power. (2) While pressing 3 and BAND together, turn ON POWER . 3. Circuit Check Mode Set to the reception frequency that the circuit can receive (FM : STEREO, RDS stations). (Set the input level to above 70 dB.) This enables circuit check to b

23、e performed in any of the reception modes-FM, AM (MW, LW). Set to a desired band before setting the test mode. (1) Turn OFF the power. (2) While pressing 4 and BAND together, turn ON POWER . The items in the following table will be checked automatically in order every 2 seconds. SECTION 3 TEST MODE

24、(2) 8-digit test pattern (3) 2-digit test pattern The display changes every 500 msec. Microcomputer version indication (1 sec) t All light up (1) t 8-digit test pattern (2) t 2-digit test pattern (3) T FM RDS DisplayItems TUNED IF SIG L ST RDS AST signal = LOW IF COUNT OK SI LEVEL 70dB ST signal = L

25、OW RDS DATA OK DISPLAY OK or NG OK or NG OK or NG OK or NG OK or NG AM (MW, LW) OK or NG NG IC201 NG, RV201 adjustments TB101, IC201 NG TB101 NG TB101 NG IC801 NG = 7 ST-SE370 4. Forced RESET Clears all the RAMs and sets the initial state. (1) Turn OFF the power. (2) While pressing 5 and BAND togeth

26、er, turn ON POWER . 5. Language Change 1. Turn OFF the power. 2. While pressing 2 , turn ON POWER . 6. Change-over of AM Tuner Step between 9 kHz and 10 kHz (US model only) A step of AM channels can be changed over between 9 kHz and 10 kHz. 1. Turn OFF the power. 2. While pressing 9 or -, turn ON PO

27、WER . 8 ST-SE370 SECTION 4 ELECTRICAL ADJUSTMENTS FM Signal Level Adjustment Procedure: 1. Tune the set to 98 MHz. 2. Push the DISPLAY button for digital signal meter indication. 3. Adjust RV201 to the place where level and “70dB” indication lights on fluorescent indicator tube. Adjustment Location:

28、 MAIN BOARD Component Side FM RF signal generator set FM ANTENNA 75 coaxial (TB101) Carrier frequency : 98 MHz Modulation: 1 kHz, 40 kHz deviation Output level: 6.3 mV (76dB) (75 open) IC201 CN101 RV201 FM SIGNAL LEVEL Adjustment ST-SE370 99 SECTION 5 DIAGRAMS 5-1.NOTE FOR PRINTED WIRING BOARDS AND

29、SCHEMATIC DIAGRAMS (In addition to this, the necessary note is printed in each block) Note on Printed Wiring Board: X : parts extracted from the component side. : Pattern from the side which enables seeing. Indication of transistor. B These are omitted. CE Q Note on Schematic Diagram: All capacitors

30、 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. f: internal component. 2 : nonflammable resistor. C : panel designation. U : B+ Line. V : B Line. H : adjustment for repa

31、ir. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM : Can not be measured. Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Waveforms are taken with a oscilloscope. Vol

32、tage variations may be noted due to normal produc- tion tolerances. Circled numbers refer to waveforms. Signal path. F: FM Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Waveforms DISPLAY Board 1 IC701 eg (X2) MA

33、IN Board 2 IC801 qf (OSCO) (AEP, UK model only) 5.4 Vp-p 4.2 MHz 4.8 Vp-p 4.332 MHz Circuit Boards Location MAIN board TUNER (PACK) AC SW board DISPLAY board SW board ENCORDER board ST-SE370 1010 5-2.PRINTED WIRING BOARDS MAIN Section See page 9 for Circuit Boards Location. IC301D-6 IC801B-7 IC901C-

34、7 Q301E-7 Q302D-7 Q801B-7 Q901C-8 Ref. No.LocationRef. No.Location D901D-5 D902D-5 D903C-5 D904C-5 D905C-5 D906A-5 D907C-7 D908C-6 IC201D-9 Semiconductor Location MAIN BOARD 2 1 AC SW BOARD POWER 1 2 1-681-067- 11 (11) PC901 AC IN BLU BRN 2 1 (CHASSIS) (EXCEPT US) (US) * NOT REPLACEABLE : BUILT IN T

35、RANSFORMER * POWER TRANSFORMER 98 A DISPLAY BOARD CN702 B DISPLAY BOARD CN701 17 E E 18 169 18 169 1 4 85 (AEP, UK) EXCEPT AEP, UK E E EXCEPT AEP, UK (AEP, UK) EXCEPT AEP, UK EXCEPT AEP, UK LR LINE OUT 1-681-063- 11 (11) 75 COAXIAL AM FM TUNER PACK SUPPLIED WITH THE ASSEMBLED BLOCK ANTENNA (AEP, UK)

36、A B C D E 12345678910 TB101 (Page 12)(Page 12) ST-SE370 1111 5-3.SCHEMATIC DIAGRAM MAIN Section See page 9 for Waveform. See page 14 for IC Block Diagram. R904 R303 R310 R903 CNP951 C352 C351 L351 R908R910R909 R907R906R905 C906 C909 D904 D903 C903 C904 C908 R902 D907 C907 C911 D908 R804 D902 D901 C9

37、01 C902 C951 CNP901 JW902 JW901 CN951 CNP701 C910 R901 R805R803 X801 C806 C807 C803 R802 C802 C805 C801 C804 C808 R801 C201 C202 C203 R202 C207 RV201C204C206 C205 C102C101 CNP702 C301 C319R301 R306 C304 C303 R305 R304R302 C302 R308 C306 JW302 C308 C307 IC301(2/2) R309 R311 R312 R321 Q301 L352 R352 R

38、351 JW305JW303JW301 R307 CN101 J301 PT901 PC901 S901 JW306JW304 Q302 R319R320 Q801 C104 C103 R105 R104 R201 C305 TB101 IC301(1/2) D906 D905 IC201 IC801 Q901 C905 IC901 EP901 R900 47k 100k 470 100k 2P 1000p 1000p 470470470 470470470 220 50V 47 16V 11ES2 11ES2 47 50V47 50V 10 50V 47k 11ES2 470 6.3V 0.

39、47 50V 1SS133 220 11ES2 11ES2 0.01 0.01 1000p 250V 2P 2P 9P 10 50V 47k 1002.2k 4.332MHz 82p 47p 0.01 47 47 16V 560p 0.01 0.01 2.2 50V 10k 330p 0.01 0.01 100 0.1 50V 22k0.010.01 47 16V 10 50V 0.01 8P 4.7 50V 220 16V 100k 10k 10 50V 10 50V 10k 100k100k 4.7 50V 4.7k 100p 4.7 50V 4.7 50V NJM4558D 470 1k

40、 1k 10 2SD2144S 47k 47k 4.7k 15P 2SD2144S 100100 2SC1740S 10 50V0.01 10k 10k 470 100p NJM4558D MTZJ-T-72-6.2 MTZJ-T-72-30 LA1235 BU1924 BLIN4M 2200 35V LA5667 3.3M 1/2W A1 A2 A3 A4 A1 A4 Z1 Z2 Z1 Z2 A2 A3 +5V GND POWER CLK DATA D-IN RDS-C -30V CE ST AST MUTE EON G G (CHASSIS) 230V 120V 100V OR 0V (C

41、HASSIS) QUAL RDDA IN VDD VDD RDCL TEST MODE IFIN MUTE VCC SIG. GND RESET 5V-IN +5V +13V-IN +13V L R LINE OUT *NOT REPLACEABLE: BUILT IN TRANSFORMER TRANSFORMER POWER (US) (EXCEPT US) (US) AC IN POWER (EXCEPT AEP,UK) (AEP,UK) (AEP,UK) (EXCEPT AEP,UK) MUTING MUTING LINE AMP (AEP,UK) (EXCEPT AEP,UK) (E

42、XCEPT AEP,UK) (AEP,UK) MUTING SWITCH +5V,+13V REGULATOR MUTE NULL LIMITER RDS DECODER SWITCH FM DET FM SIGNAL DETECTOR THE ASSEMBLED BLOCK ( ( SUPPLIED WITH (CHASSIS) AM FM 75 COAXIAL ANTENNA SCOUT CIN VSSA VREF VSSD TS7 OSCO OSCI FL2 FL1 SIGNAL RDS-DATA 10H 10H (Page 13) (Page 13) ST-SE370 1212 5-4

43、.PRINTED WIRING BOARDS DISPLAY Section See page 9 for Circuit Boards Location. Semiconductor Location Ref. No.Location D701B-11 D702A-11 D703A-2 D704B-3 IC701B-4 IC702B-8 Q701B-2 DISPLAY BOARD 14 13 ENTERDIRECTSHIFT 09 87 65 4321 E 5101215192530353642 43 FLUORESCENT INDICATOR TUBE 24 41 64 13 18 19

44、B MAIN BOARD CNP701 A MAIN BOARD CNP702 DISPLAYMEMORY FM MODEBANDPTY 1-681-064- 11 (11) S701 715, 717, 718, 721 724, 727, 728 ENCODER BOARD 1-681-065- 11 (11) TUNING /SELECT 13 123 SW BOARD 1-681-066- 11 (11) 4 1 MENURETURN TUNE MODE CHARACTER A B C D E 123456789101112 + (EXCEPT SP, AUS) (EXCEPT US)

45、 (US)(SP, AUS) (EXCEPT AEP, UK) (AEP, UK) EXCEPT AEP, UK AUTO-BETICAL SELECT (AEP, UK) 1 80 40 25 (Page 10)(Page 10) ST-SE370 1313 R758 FL701 CNP703CN703 CNP704CN704 CN702 CN701 R732 R728 R727 R726 R725 R724 R723 R722 R721 R711R712 C709C708 R733R734 C716 S717 S718 S721 S722 S723 S724 R776 R775 R771

46、R770 R777 R778 R779 R780 S701 R750 R751 S702 R752 S703 S704 S705 S706 S707 S708 R753 R754 R755 R756 R757 S709 S710 S711 S712 R760 R759 R761 R762 C711 C701 R710 R703 R704 X701 C703C704 C705 R701 R702 C713 R705 R713C710 JW793 JW794 JW792 JW791 C714 Q701 R707 R708 C717 C706 C707 TP1 TP3 TP2 D701 D702 R

47、729 R731 S727 R781 S713 R763 S728 S714 R764 S715 D703 C712 C715R706D704C702 IC702 RV701 R772 R773 R792 R793 IC701 470 3P3P 4P4P 8P 9P 470 470 470 470 470 470 470 470 470 100k100k 0.010.01 100k100k 22 50V 270 220 120 100 330 470 560 820 100 120 120 150 180 220 270 330 820 560 1.2k 2.2k 10 50V 0.01 10k 10k 10k 4.2MHz 27p27p 0.01 1.5k 1.5k 0.01 470k 1000.01 0.47 50V 2SC1740S 1k 47 0.01 0.01 10 50V 1SS