Sony-STRV220-rec-sm 电路图 维修手册.pdf

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1、 1 MICROFILM US Model SPECIFICATIONS SERVICE MANUAL FM STEREO/FM-AM RECEIVER STR-V220 Continued on next page RadioFans.CN 收音机爱 好者资料库 2 SAFETY-RELATED COMPONENT WARNING ! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OP

2、ERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. SAFETY CH

3、ECK-OUT After correcting the original service problem, perform the follow- ing 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

4、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 microampers). Leak- age current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 2

5、29 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

6、” 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 pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) Fig. A. Using an AC voltmeter to c

7、heck AC leakage. 0.15F To Exposed Metal Parts on Set 1.5k AC voltmeter (0.75V) Earth Ground RadioFans.CN 收音机爱 好者资料库 3 TABLE OF CONTENTS SECTION 1 SERVICING NOTE 1. SERVICING NOTE. 3 2. GENERAL. 4 3. ELECTRICAL BLOCK CHECKING.5 4. DIAGRAMS 4-1. Circuit Boards Location. 6 4-2. Schematic Diagram Main (

8、1/3) Section . 7 4-3. Schematic Diagram Main (2/3) Section . 9 4-4. Schematic Diagram Main (3/3) Section . 11 4-5. Printed Wiring Board Main Section . 13 FACTORY SET Mode which sets the preset settings of the unit to that at shipment. Procedure: While pressing the VIDEO button and TV/SAT button toge

9、ther, press the 1/u button to turn on the power. “FACTORY” will be displayed and factory settings executed. INITIALIZATION Mode which erases all the preset settings of the unit. Use this mode when returning the unit to the customer. Procedure: While pressing the VIDEO button, TV/SAT button, and TAPE

10、/MD button together, press the 1/u button to turn on the power. “INITIAL” will be displayed and initialization executed. FLUORESCENT INDICATOR TUBE LIGHTING CHECK Mode which lights up the whole fluorescent indicator tube or partially. Procedure: While pressing the TV/SAT button and TAPE/MD button to

11、gether, press the 1/u button to turn on the power. The fluorescent indicator tube will light up in about 0.5 seconds, and then start to light up partially. After partial lighting completes, the BASS BOOST indicator will light up, “FINISH” will be displayed, indicating that fluorescent indicator tube

12、 lighting check has completed. SWITCHING OF 9 kHz/10 kHz AM CHANNEL STEP The AM channels of this unit can be switched between 9 kHz and 10 kHz. Procedure: Set FUNCTION to AM and turn off the power. While pressing the TUNING + button, press the 1/u button to turn on the power. “9 k STEP” or “10 k STE

13、P” will be displayed, and the channel step will be switched. 4-6. Printed Wiring Board Display Section .15 4-7. Schematic Diagram Display Section . 17 4-8. Schematic Diagram Panel Section . 19 4-9. Printed Wiring Board Panel Section .21 4-10. IC Block Diagrams.23 4-11. IC Pin Functions.26 5. EXPLODE

14、D VIEWS 5-1. Case Section. 28 5-2. Chassis Section .29 6. ELECTRICAL PARTS LIST. 30 RadioFans.CN 收音机爱 好者资料库 4 Front Panel Descriptions SECTION 2 GENERAL Location of Parts and Controls 1 1/u button 2 VIDEO button 3 TV/SAT button 4 TAPE/MD button 5 CD button 6 TUNER button 7 BASS BOOST indicator 8 MAS

15、TER VOLUME knob 9 BALANCE knob 782 3 4651 161710111314151291819212223 2425 20 10 TREBLE knob 11 BASS knob 12 SURROUND ON/OFF button 13 CENTER MODE button 14 EFFECT/DELAY TIME button 15 SURROUND MODE button 16 Numeral (1 to 0) button 17 Display window 18 DIRECT button 19 SHIFT button 20 MEMORY button

16、 21 AM button 22 TUNING + button 23 FM button 24 TUNING button 25 PHONES jack This section is extracted from instruction manual. STR-V220 SECTION 4 DIAGRAMS 4-1. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is

17、printed in each block.) 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. : internal component. 2 : nonflammable resistor. C :

18、panel designation. For printed wiring boards. Note: X : parts extracted from the component side. b : Pattern of the conductor side. U : B+ Line. V : B Line. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM WAVEFORMS 12 IC201 # X1IC301 # Note: Th

19、e components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Indication of transistor C These are omitted EB 8MHz 4.8Vp-p 4.19MHz 5.4Vp-p Caution: Pattern face side:Parts on the pattern face side seen from (Conductor Side)the pattern

20、face are indicated. Parts face side:Parts on the parts face side seen from (Component Side)the parts face are indicated. 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. Voltage varia

21、tions may be noted due to normal produc- tion tolerances. Circled numbers refer to waveforms. Signal path. F: FM SECONDARY board PRIMARY board STANDBY board MAIN board VOL-TONE board DISPLAY board PHONE JACK board KEY board MAIN (1/3) SECTIONDISPLAY SECTION 5 6 SECTION 3 ELECTRICAL BLOCK CHECKING AD

22、JUSTING THE FM/SD SIGNAL SENSITIVITY Setting: oscilloscope Main board TP (IC501 6 pin) Procedure: 1. Set the SSG output level to 26 dB and input the signal. 2. Adjust SFR501 so that the oscilloscope level becomes 0V. 3. Raise the SSG output level slightly (max. 35 dB) when the ad- justment in step 2

23、 fails, and repeat steps 1 and 2. NOTE: If the adjustment cannot be performed even when set to 35 dB, the sensitivity may be faulty, etc. Check the antenna terminal connection, FM front end and IF circuit, etc. and perform adjustments again. FM ANTENNA (75)FM RF SSG Set Carrier frequency: 98 MHz Mod

24、ulation:AUDIO 1 kHz, 75 kHz deviation (100%) Output level:26 dB (at 75 open) (MAX 35 dB) STR-V220 7 8 4-2. SCHEMATIC DIAGRAM MAIN (1/3) SECTION See page 6 for Waveforms. See page 13 for Printed Wiring Board. See page 23 for IC Block Diagrams. (Page 19) (Page 11) (Page 11) (Page 17) STR-V220 9 10 4-3

25、. SCHEMATIC DIAGRAM MAIN (2/3) SECTION See page 13 for Printed Wiring Board. (Page 11) (Page 20) STR-V220 11 12 4-4. SCHEMATIC DIAGRAM MAIN (3/3) SECTION See page 24 for IC Block Diagrams. (Page 9, 10) (Page 8) (Page 8) STR-V220 JW269 J402 JW133 JW123 32 E E 11 1 CB 11 2 3 1 22 1 22 1 15 4 1 E E E E

26、 4 8 5 2 1 22 23 E E 1617 32 33 4849 64 1 E 1 4 8 28 9 1 1 15 1 1 11 22 12 15 30 16 30 16 2 1 6 7 5 E E E EE E E E E E E E E E MIX AUDIO OUT AUDIO IN AUDIO OUT TA/SAT AUDIO IN REC ONT INCD IN AM FM 75 FM 300 LRLR LR CENTER REAR SPEAKER FRONT LRLRLRLRLR VIDEO ANTENNA TAPE/MD 09 6 E 54321 D C B A (CHA

27、SSIS) (CHASSIS) (CHASSIS) MAIN BOARD 11 (11) 1-673-709- C B A 4 1 3 C806 R823 R824 JW100 R830 Q809 R831 D818 JW099 JW098 D822 D823 C812C811 R810 R811 D804 JW110 JW109 C809 R804 C801 JW108 D801 C802 JW107 JW106 C807 Q801 C814 C813 JW104 JW105 JW111 CN801 JW150 JW151 JW152 C651 Q670 R656 RY801 G202 C8

28、10 C808 JW103 JW102 JW101 IC802 IC801 D820 D821 C805 C751 R752 R652 JW149 JW148 C653 R653 C654 R654 C655 JW162 R660 R671 JW145 R721 R710 JW169 JW142 C712 C707 C706 R706 R701 Q793 C796 JW182 JW181 JW193 JW180 JW179 CNS204 C701 C702 C703 R702 R703 R299 R298 JW137 C413 R705 R711 R707 JW140 IC701 R704 J

29、W184 JW185 JW186 JW187 JW183 JW188 JW189 R441 R442 R435 C434 C435 JW190 JW191 JW192 JW194 C309 L301 R301 C353 C354 R305 R302R353R303 R354 JW139 C704 C416 JW136 C415 R673 C670 R674 D670 R670 JW271 JW272 JW273 JW274 JW275 JW206 JW204 JW203 JW201 JW199 JW200 C329 C331 C328 C327 C325 IC301 C324 R465 C34

30、3 C342 R470 R415 C326 C318 C365 C363 JW237 R363 R300 CX301 C302 D817 C305 C304 C303 JW235 C308 C307 JW236 C822 R825 C823 G203 Q808 B C E C335 C334 C323 R420 JW188 JW197 JW196 CNS701 C330C350 C362 C338 Q308 Q307 R308 C355 R355 R309 C356 R352JW243 C359 R361 R360 C310 R304 C360 R356 R362 R359 C340 C341

31、 C339 JW244 C322 C317 IC302 R357 C315 R307 C314 C312 JW238 R306 Q304 Q303 C313 C306 C316 C311 JW239 C344 JW240 JW247 C345 C349 C348 C346 C342 C332 C333 C351 C352 R651 C652 C752 R751 Q794 C720 R723 Q720 D720 R720 R672 JW257 UCC GND ANT ANT IF OUT GND OSC UT C501 C507 R452 JW234 JW270 JW242 R407 R457

32、R406 R456 R405 R455 R404 R454 R403 R453 R402 R408 R458 JW264 TM001 JW261R504JW266 JW259JW268 R511 CF501 C502 R512 C511 SFR501 C509 G201 OSCANT T502 R514 C508 JW256 JW250 R513 C517 C512 C515 R537 R529 C539 C531 R535 R531 JW248 JW249 T505 C533 CNS301 C534 C540 T504 R532 R536 C532 R521 C528 C530 IC501

33、C514 JW251 C516 C505 R505 FE501 R506 R507 C506 CF502 R508 Q501 Q503 JW253 C549 C518 CD501 T503 C520 C519 C544 R544 R501 C543 R546 R545 JW265 JW263 JW262 R547 C548 C503 C542 R548 R549 C541 R550 JW258 JW229 D503 R554 R561 JW255 JW254 TP6 JW218 R632 R730 D723 JW138 D725 R734 J253 J403 TM601 X501 JW233

34、JW175 JW176 JW232 JW231 JW177 JW178 R410 C411 C412 JW171 IC401 JW228 JW224 JW225 JW226 JW227 JW222 JW223 JW220 JW219 JW221 R414 C408 C406 R460 IC502 R459 R558 R557 R556 C545 R559 R541 JW174 JW173 JW172 R617 R667 C661 R725 C611 JW143 JW170 R668 R618 L651 L601 JW135 JW134 RY601 R631 L751 R718 JW130 R7

35、81 C791 R768 L701 R792 JW132 Q791 D793 R630 Q610 JW131 D610 D792 R731 JW129 JW128 JW127 IC950 R955 R957 Q710 R956 R951 D710 JW124 JW125 JW126 R717 R767 C711 C761 Q951 R791 R782 R783 R733 R732 R719R772 R622R619 R954 R960 R953 R950 JW114 C951 C955 R952 JW121 JW120 JW296 C950 C954 R822 R821 C952C953 Q9

36、02 D810 D811 C821 C820 R958 D812 D815 D814 D813 JW252 C521 C523 R515 R516 R517 C538 C525 C526 C524 Q505 R538 Q504 R519 JW212 JW209 JW205 JW211 JW208 JW207 C536 C522 C535 SFR502 C527 JW217 JW216 JW214 JW215 C537 R542 R543 D722 R724 Q721 Q722 C722 C604 R604 D724 R727 Q723 JW230 D721 C721 C606 C601 C60

37、2 C612 C757 C603 R603 R602 R606 R605 R610 R621 JW160 JW165 R771 R756 R760 R757 R755 C756 C770C620 R773R623 Q620 Q770 D620 R620 R774 JW280 R770 R772 D770 C797 C754 R754 JW158 R753 C753 R601 JW168JW141 JW166 JW163 IC702 JW278 JW276 JW277 JW154 JW119 JW117 JW118 JW115 JW116 JW113 R803 JW112 C804 C803 E

38、 C B SS RY701 JW122 JW213 (Page 21) (Page 21) (Page 15) 13 14 4-5. PRINTED WIRING BOARD MAIN SECTION See page 6 for Circuit Boards Location. Ref. No.Location Semiconductor Location 1-673-705- 11 (11) SONY 1-673-705-11 STANDBY T902 POWER TRANSFORMER 1 4 N N L R901 (CHASSIS) AC IN D816 RY901 CNP802 CN

39、J902 CNP903 CNP901 G900 2 1 AC OUTLET STANDBY BOARD 091 B 23 A JW297 SONY PHONE JACK 1-673-706-11 J741 15 R793 1-673-706- D791 C792 CNP702 V MR L B 4 11 (11) PHONE JACK PHONE JACK BOARD 09 12 A TP901 POWER TRANSFORMER JW295 JW294 JW293 JW292 JW291 JW290 CNP801 SONY SECONDARY 1-673-707-11 1-073-707-

40、1 11 SONY 1-673-708-11 PRIMARYF901 CNP902 NL 1-673-708- 3 2 11 (11) 11 (11) SECONDARY BOARD 09 A 123 PRIMARY BOARD 09 A 12 D503B-2 D610B-5 D620C-3 D670D-3 D710B-5 D720D-3 D721B-4 D722B-4 D723A-4 D724B-4 D725A-4 D770C-3 D792B-5 D793A-5 D801E-6 D802D-6 D804E-5 D810B-6 D811B-6 D812B-6 D813B-6 D814A-6 D

41、815A-6 D817E-1 D818E-6 D820E-6 D821E-6 D822E-6 D823E-6 IC301E-2 IC302D-2 IC401B-3 IC501C-2 IC502B-2 IC701E-4 IC702C-4 IC801E-6 IC802E-6 IC950B-6 Q303E-1 Q304E-1 Q307D-1 Q308D-2 Q501B-2 Q503B-2 Q504C-2 Q505C-2 Q610B-5 Q620C-3 Q670D-3 Q710B-5 Q720D-3 Q721B-4 Q722B-4 Q723B-4 Q770C-4 Q791A-5 Q793E-3 Q79

42、4D-4 Q801E-5 Q802B-6 Q808E-2 Q809E-6 Q951B-6 STR-V220 15 16 4-6. PRINTED WIRING BOARD DISPLAY SECTION See page 6 for Circuit Boards Location. Ref. No.Location Semiconductor Location D201B-3 D202A-3 D203A-3 D204A-6 D213C-8 D214C-8 D225C-8 D231A-7 IC201B-5 IC202B-3 IC203C-8 Q201A-7 Q202A-7 Q231A-7 JW9

43、6 JW85 JW86 JW87 JW90 JW129 JW95 JW94 JW93 JW92 JW91 JW39 JW31 JW30 JW21 JW20 JW19 JW29 JW28 JW27 JW36 JW35 JW34 JW33 JW32 JW22 JW23 JW24 JW25 JW26 JW37 JW38 JW4 JW5 JW3 JW82 JW65 JW66 JW67 JW68 JW51 JW102 JW50 JW48 JW47 JW46 JW61 JW62 JW57 JW59 JW63 JW69 JW2 JW45 JW52 JW49 JW9 JW8 JW7 JW1 JW53 JW60

44、 JW75 JW74 JW73 JW11 JW71 JW76 JW64 JW70 JW72 JW104 JW58 JW43 JW42 JW44 JW56 JW98 JW14 JW13 JW41 JW40 JW81 JW77 JW80 JW6 JW103 JW12 JW89 JW99 JW105 JW100 JW101 JW10 JW16 JW15 JW18 JW17 C425 R420 JW88 R470 JW97 JW84 R474 C474 C473 R473 C423 R423 R471 C471 R424 C424 RU421RU422RU423 C421 R421JW55 JW54

45、C207 C422 C472 R422 R226 R227 S218S219 S217S238 R472 IC202 C205 R205 D203 R202 D201 D202 L401 C201 R225 R224 R223 R222 R221 C202 RR2 JW78JW79 CNS201 1 X201 R201R270 6580 2540 64 1 41 24 R204 R286 C204 C203 D204 Q201 Q202 Q231 D231 R203 R207 C206 R231 R284 R283 R228 R232 R233R234 R200 R235 CNP205 S20

46、0 S229 S215S214 S210S209 S216 D214 D213 D225 R216 R214 R213 R212 R211 SONY 1-673-693-11 DISPLAY IC201 RR1 35 FL201 1 IC203 11 (11) 09 A C B 10896745123 BASS DC FE 1 2 3 4 5 6789 10 11 1-673-693- TREBLEBALANCE 18 13 19 23 222 E E E EFFECT, DELAY TIME SET UP MODEON/OFFSURROUND MEMORY FMAM SHIFT TUNING

47、 1/u DISPLAY BOARD (Page 21)(Page 21) (Page 13) (Page 22) STR-V220 17 18 4-7. SCHEMATIC DIAGRAM DISPLAY SECTION See page 6 for Waveforms. See page 25 for IC Block Diagrams. See page 26 for IC Pin Function. (Page 7) (Page 19) (Page 20) (Page 20) STR-V220 19 20 4-8. SCHEMATIC DIAGRAM PANEL SECTION (Page 17) (Page 8)(Page 9) (Page 18) (Page 18) STR-V220 21 22 4-9. PRINTED WIRING