Sony-BM577-tape-sm 维修电路原理图.pdf

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1、1SERVICE MANUALUS ModelAEP ModelBM-575/577MICROCASSETTETM DICTATORVer. 1.1 2006. 109-960-235-122006J04-1 2006. 10Sony CorporationPersonal Audio DivisionPublished by Sony Techno Create CorporationPhoto: BM-575RadioFans.CN 收音机爱 好者资料库RadioFans.CN 收音机爱 好者资料库 22 Ref. No.Part No.DescriptionRemark6-2. CHAS

2、SIS SECTIONRef. No.Part No.DescriptionRemark51A-3042-793-A LID ASSY, BATTERY CASE523-927-394-01SHAFT (BATTERY CASE LID)533-927-398-01KNOB (TAPE SPEED)* 543-927-393-01SPRING, BATTER CASE LID* 551-657-825-11LED BOARD56A-3042-788-A CABINET (MIDDLE) ASSY (BM-575)56A-3042-791-A CABINET (MIDDLE) ASSY (BM-

3、577)573-927-413-01SPRING, BATTERY583-306-145-01HOLDER (MICRPHONE)59A-3042-792-A BUTTON ASSY, CONTROL603-927-404-01BUTTON (E-INDEX)* 613-927-499-01COVER, BATTERY623-927-402-01SPRING, TENSION (BM-577)633-927-401-01LEVER, CHARGE SWITCH (BM-577)643-927-399-01BUTTON (EJECT)653-927-403-01KNOB (FF/CUE)* 66

4、A-3016-730-A MAIN BOARD, COMPLETE (BM-575)* 66A-3016-735-A MAIN BOARD, COMPLETE (BM-577)673-927-392-01BUTTON (LOCK)683-309-597-01SCREW (1.4), TAPPING693-321-813-01WASHER, COTTER POLYETHYLENE703-701-437-01WASHER* 713-557-857-01CUSHION, VIBRATION PREVENTION723-309-597-61SCREW (1.4X6), TAPPINGMIC11-542

5、-197-11MICROPHONE, ELECTRET CONDENSER 30 BM-575/577Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemarkR1731-216-807-11METAL CHIP685%1/16W(BM-575)R1741-216-837-11METAL CHIP22K5%1/16W(BM-575)R1751-216-814-11METAL CHIP2705%1/16W(BM-575)R1751-216-822-11METAL CHIP1.2K5%1/16W(BM-577)R1761-2

6、16-200-11METAL GLAZE1.2K5%1/8WR1771-216-841-11METAL CHIP47K5%1/16WS11-762-456-11SWITCH, SLIDE (REC/PB)S21-572-922-11SWITCH, SLIDE (MIC SENS)S31-571-277-31SWITCH, SLIDE (TAPE SPEED)S41-572-922-11SWITCH, SLIDE (FAST PB)S51-571-275-31SWITCH, SLIDE (VOR)S61-572-288-11SWITCH, PUSH (FF/CUE)S71-553-817-00S

7、WITCH, LEAF (POWER)S81-572-688-11SWITCH, PUSH (BATTERY CHARGE) (BM-577)S91-572-688-11SWITCH, PUSH (B.SPACE)S101-692-088-11SWITCH, TACTILE (E-INDEX) (BM-577)T1011-433-286-11TRANSFORMER, BIAS OSCILLATIONTHP101 1-808-956-11THERMISTOR, POSITIVEVR1011-223-749-11RES, VAR, CARBON 10K/10K (VOL)VR1021-238-08

8、9-11RES, ADJ, CERMET 4.7KVR1031-238-088-11RES, ADJ, CERMET 2.2K*MISCELLANEOUS*1051-548-516-00TIMER, TAPEHD11-500-271-11HEAD, MAGNETIC (REC/PB/ERASE) (BM-575)HD11-543-725-11HEAD, MAGNETIC (REC/PB) (BM-577)HE18-825-772-01ESF194-62G (ERASE HEAD) (BM-577)M1A-3042-785-A MOTOR ASSYMIC11-542-197-11MICROPHO

9、NE, ELECTRET CONDENSERSP11-504-961-11SPEAKER*HARDWARE LIST*#17-624-101-04STOP RING 1.2 (E TYPE)#27-627-451-07SCREW, PRECISION +K 1.4X1.6#37-627-451-08SCREW, PRECISION +K 1.4X1.6#47-627-551-17SCREW, PRECISION +P 1.4X2#57-627-551-27SCREW, PRECISION +P 1.4X2.5#67-627-551-47SCREW, PRECISION +P 1.4X1.4#7

10、7-627-850-07SCREW, PRECISION +P 1.4X2#87-627-850-08SCREW, PRECISION +P 1.4X2#97-627-850-17SCREW, PRECISION +P 1.4X2.5#107-627-850-47SCREW, PRECISION +P 1.4X1.6#117-627-850-97SCREW, PRECISION +P 1.4X2.2#127-671-111-11BALL, STEEL 1.5MM#137-671-155-01BALL, STEEL 3MM*ACCESSORIES & PACKING MATERIALS*3-80

11、0-079-13MANUAL, INSTRUCTION (ENGLISH,FRENCH)(AEP)3-800-079-22MANUAL, INSTRUCTION (ENGLISH) (US)3-800-079-43MANUAL, INSTRUCTION (GERMAN,DUTCH)(AEP)3-927-586-01CASE, CARRYING (BM-577)MAIN1US ModelAEP ModelSERVICE MANUALVer. 1.1 2006. 10SUPPLEMENT-2File this supplement with the service manual.Subject :

12、 Specification change of BM-575Change to the specifications are made to implement for the model with the serialNo. 0100001 and later (US model) or 0101751 and later (AEP model).Check the serial No. when servicing or inspecting the set.Mechanical adjustments, electrical adjustments, printed wiring bo

13、ards, schematicdiagram, exploded view and electrical parts list of new type are described in thissupplement-2.BM-575/5779-960-235-822BM-575/5771. MECHANICAL ADJUSTMENTSPRECAUTION1.Clean the following parts with a denatured alcohol moistenedswab:record/playback/erase headpinch rollerrubber beltscapst

14、an idlers2.Demagnetize the record/playback/erase head with a headdemagnetizer.3.Do not use a magnetized screwdriver for the adjustments.4.After the adjustments, apply suitable locking compound to theparts adjusted.5.The adjustments should be performed with the rated powersupply voltage (dc 2.5 V) un

15、less otherwise noted. Switches and control should be set as follows unless otherwisespecified.MIC SENS selector: CONFTAPE SPEED selector : 2.4 cmFAST PB switch: OFFVOR switch: OFFVOL control: mechanical centerTorque MeasurementModeTorque meterMeter reading(Cassette type)LISTENCQ-103M5 to 12 gcm(0.06

16、9 to 0.167 ozinch)FF/CUECQ-201Mmore than 5 gcm(more than 0.069 ozinch)B. SPACECQ-201Mmore than 14 gcm(more than 0.194 ozinch)Tape Tension MeasurementModeTension meterMeter reading(Cassette type)LISTENCQ-403M25 to 55 g(0.88 to 1.94 oz)Timing Adjustment1.Take-up reel spindle should rotate at the same

17、time as pinchroller or earlier than pinch roller in STOP to LISTEN/DICTmode.Confirm that the pinch roller presses to capstan and they rotate.2.When they are not correctly rotate, adjust the place of adjustmentplate so that it is wide.2. ELECTRICAL ADJUSTMENTSPRECAUTION1.Demagnetize the record/playba

18、ck/erase head with a headdemagnetizer.2.Do not use a magnetized screwdriver for the adjustments.3.After the adjustments, apply suitable locking compound to theparts adjusted.4.The adjustments should be performed with the rated powersupply voltage (dc 2.5 V) unless otherwise noted.5.The adjustments s

19、hould be performed in the order given in thisservice manual. (As a general rule, playback circuit adjustmentshould be completed before performing recording circuitadjustment.) Switches and control should be set as follows unless otherwisespecified.MIC SENS selector: CONFTAPE SPEED selector : 2.4 cmF

20、AST PB switch: OFFVOR switch: OFFVOL control: mechanical centerTest TapeTypeSignalUsed forWS-243 kHz, 10 dBTape Speed (2.4 cm) AdjustmentWS-123 kHz, 10 dBTape Speed (1.2 cm) AdjustmentS-2-A030A3 kHz, 20 dBHead Azimuth AdjustmentTape Speed (2.4 cm) AdjustmentSetting:TAPE SPEED selector: 2.4 cmProcedu

21、re:1.Mode: LISTENFWD idleradjustment platescrew fixing the adjustment plate0.3 to 0.6mm2.Adjust VR102 so that the frequency counter reads 2,990 to 3,010Hz.Adjustment Location: See page 3.Tape Speed (1.2 cm) AdjustmentSetting:TAPE SPEED selector: 1.2 cmProcedure:1.Mode: LISTEN2.Adjust VR103 so that t

22、he frequency counter reads 2,990 to 3,010Hz.Adjustment Location: See page 3.settest tapeWS-24(3 kHz, 10 dB)frequency counterEAR jack settest tapeWS-12(3 kHz, 10 dB)frequency counterEAR jack BM-575/57733BM-575/577Adjustment Location:Record Bias AdjustmentSetting:TAPE SPEED selector: 2.4 cmProcedure:1

23、.Mode: DICT (record)Record/playback Head Azimuth AdjustmentProcedure:1.Mode: LISTEN2.Turn the adjustment screw for maximum digital voltmeterreading.Note: Several peaks may apper, but take the maximum.Adjustment Location:blind plateVR103(1.2cm)VR102(2.4cm)TAPE SPEEDADJset10 k test tapeS-2-A030A(3 kHz

24、, 20 dB)digitalvoltmeterEAR jack adjustment holdornamentadjustment screw2.Mode: LISTEN (playback)3.LISTEN (playback) the signal recorded in step 1.4.Turn the VOL control so that the digital voltmeter reads within0 dB.Confirm that the distortion meter reads within adjustment limits.5.Set the TAPE SPE

25、ED selector to 1.2 cm and repeat steps 1 to 4.6.If the adjustment limits are not satisfied, soldering the tap asfollows.Adjustment limits:tape speeddistortion2.4 cm/swithin 10%1.2 cm/swithin 14%Soldering Point: main board (conductor side)set300 6 600 AF OSCattenuatorMIC jack1 kHz, 0.775 mV (60 dB) b

26、lank tapeCS-50-4 set10 k recordedportiondigitalvoltmeterdistortionmeterEAR jack R176R136R132R142Q110C136C137R141C140R145R177C139R129C125R158TPIf the adjustment limitsare not satisfied, solderingthe tap.1.2cm2.4cmR123R118R173BATAPE SPEEDR152IC1031485IC1041-1-2485IC1011485R147R148R138R139R137R143B C E

27、B C EQ104S7(POWER)Q116D103Q120B C EB C EE C BE C BE C BB C ES3S3Q114Q105Q121YELWHTE C BQ111D104Q117Q118B C EB C EB C EQ119R128R131R144R146C113C135R126C119C141C121C118C156R159R175C138C132C122C146C1583. DIAGRAMS NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMSTHIS NOTE IS COMMON FOR PRINTED WIRIN

28、GBOARDS AND SCHEMATIC DIAGRAMS.(In addition to this, the necessary note isprinted in each block.)for schematic diagram: All capacitors are in F unless otherwise noted. (p: pF)50 WV or less are not indicated except for electrolyticsand tantalums. All resistors are in and 1/4 W or less unless otherwis

29、especified.f: internal component. C : panel designation. A : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dcpower supply from external power voltage jack. Voltage is dc with respect to ground under no-signalconditions.no mark : LISTEN (2.4 cm)FS: FF/CUE: ONBS: B

30、.SPACE: ONREC: DICT Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to normal produc-tion tolerances. Signal path.E: PB (LISTEN)a: REC (DICT)for printed wiring boards: X : parts extracted from the component side. Y : parts extracted from the conductor side.:

31、Pattern from the side which enables seeing.(The other layers patterns are not indicated.)Caution:Pattern face side:Parts on the pattern face side seen from(Conductor Side)the pattern face are indicated.Parts face side:Parts on the parts face side seen from(Component Side)the parts face are indicated

32、.BM-575/57744BM-575/5773-1. PRINTED WIRING BOARDS1ABCDEFGHIJ234567891011121314MAIN BOARD (COMPONENT SIDE)1-657-824-(13)13VR101VOLT101S6FF/CUEBLUBLUREDREDWHTBLKREDREDC1DC IN 3V !J11-657-826-(13)12LED BOARD1-657-825-(13)12D5DC-JACK BOARDDRY BATTERYSIZE AAA(IEC DESIGNATION R03)2PCS,3VorRECHARGEABLEBATT

33、ERYBP-431-657-824-(13)13R134R140THP101R176THP102R133R136R132R142Q110C136C137R141C140R145R177C139R129R172S9C125R158TP1.2cm2.4cmR123R103ERASEREC/PBHD1R119C1442S5134R118R173BABAR150R178Q124R160C149R157PH101C155C120D101D102R149R108R102C103R101S1S2S2MICSENSJ2J2,3EARJ3MIC(PLUG IN POWER)VORTAPE SPEEDDICT/B

34、ATTSP1MIC1C130C160L102R135Q106C154R115R116C108C112R113C143R114C110C109R112Q103R122D108R155R152C111IC1021485IC1031485IC1041-1-2485IC1011485C131C123C128C127C126R117R147R148R138R139R137C134R143B C EB C EQ104Q122Q123S7(POWER)Q116S4S4FAST PBB.SPACEOFFONOFFONDICTCONFLISTENDICTE C BQ115E C BQ113Q107D103B C

35、 EQ120B C EB C EB C EB C EB C EE C BE C BE C BB C EE C BQ108E C BQ109S3S3Q114Q105Q121YELYELWHTWHTQ112E C BQ111VR102VR103D104Q102Q117Q118B C EB C EB C EQ101B C EB C EB C EB C EQ119R128R127R130R131R144R146R125R124C124C117R110R109R111C113C135R126C114R104C105C106R107C104R106C107R163R121R120L101C102R105C

36、101REDBLUR153R174C145R154R151JP101C119C141C159C116C142C121C118C148C156R159R175C129C138C132C133C122C146C158C147C115C157MAIN BOARD (CONDUCTOR SIDE)M1-2-1RED+BLUWHTBLUBLUYELYELYEL+-3-4MOTORMICROPHONESPEAKERREC/PB/ERASE HEAD(REC/PB)D5H-14D101G-10D102G-10D103G-7D104G-6D108H-10IC101G-9IC102F-6IC103I-6IC10

37、4G-8PH101H-11Q101F-9Q102F-9Q103H-11Q104G-9Q105H-9Q106G-12Q107F-7Q108F-5Q109F-5Q110G-6Q111G-6Q112G-5Q113F-7Q114H-7Q115F-6Q116H-6Q117G-7Q118H-6Q119H-6Q120H-7Q121H-9Q122G-10Q123G-10Q124H-10 SemiconductorLocationRef. No.LocationBM-575/57755BM-575/5773-2. SCHEMATIC DIAGRAMR150R177C141C140C139C138D108R151

38、R178R152C156C135C136C137R146R145R142R144R143R148R147Q112C131R138R176R136S3-1S4R141C133C134C132R139MIC1J3R101R102R103C102C101 R104R105C103S2C104C107C106C105C130C108C109C110C157C111R107R106R111R112C112R109R110R114R113C113R172R117C114C116C115R163R120R121R122D101D102R126C117R124C121C123C119C122C118C129C

39、128C127C126C125R127R128R129R135S5R149D103R118D104R131R132Q109R134R133C148C149R160C159C145R154C144R155C146C147S3-2R158R159R175R153C120R157C155R174C143C142R119R116R115C158C154C160L101L102J2SP1C124R125S1-4S1-1S1-2S1-3HD1S6S9S7C1J1R130R123PH101VR102VR103THP101M1R108VR101R173TPQ123JP101IC104Q118Q119Q117T

40、HP102Q110Q102Q101Q104IC102D5Q122T101Q124R140IC103R137IC101Q120Q111Q121Q105Q116Q115Q113Q106Q103Q114Q108Q107BM-575/577664. EXPLODED VIEWSRef. No.Part No.DescriptionRemark4-1. CABINET SECTIONRef. No.Part No.DescriptionRemark1A-3042-794-A LID (CASSETTE) ASSY23-578-232-21ORNAMENT, ADJUSTMENT HOLE3A-3042-

41、786-A CABINET (FRONT) ASSY43-254-135-01SCREW (B1.4)53-309-597-01SCREW (1.4), TAPPING63-927-397-01BRACKET, SP73-927-396-01CUSHION, SP83-927-395-01SPRING, COMPRESSION93-926-697-11CABINET (REAR)103-927-405-01KNOB (MIC SENS)113-927-406-01KNOB (FAST PB)123-927-400-02PLATE, BLIND133-080-204-11SCREW, TAPPI

42、NG, P2142-629-906-01CUSHIONSP11-826-070-11SPEAKER (2.8cm)#17-627-451-08SCREW, PRECISION +K 1.4X1.6#27-627-850-08SCREW, PRECISION +P 1.4X2NOTE: The mechanical parts with no referencenumber in the exploded views are not supplied. Items marked “*” are not stocked sincethey are seldom required for routi

43、ne service.Some delay should be anticipatedwhen ordering these items. Color Indication of Appearance PartsExample :KNOB, BALANCE (WHITE) . (RED)Parts Color Cabinets Color Accessories are given in the last of this parts list.RR4-2. CHASSIS SECTIONRef. No.Part No.DescriptionRemarkRef. No.Part No.Descr

44、iptionRemark51A-3042-793-A LID ASSY, BATTERY CASE523-927-394-01SHAFT (BATTERY CASE LID)533-927-398-01KNOB (TAPE SPEED)543-927-393-01SPRING, BATTERY CASE LID553-309-597-01SCREW (1.4), TAPPING56A-3042-788-A CABINET (MIDDLE) ASSY573-927-413-01SPRING, BATTERY583-306-145-01HOLDER (MICROPHONE)59A-3042-792

45、-A BUTTON ASSY, CONTROL603-927-404-01BUTTON (E-INDEX)613-927-403-01KNOB (FF)62A-1119-343-A MAIN BOARD, COMPLETE633-309-597-61SCREW (1.4X6), TAPPING643-927-399-01BUTTON (EJECT)653-927-499-01COVER, BATTERY663-321-813-01WASHER, COTTER POLYETHYLENE673-701-437-01WASHER683-557-857-01CUSHION, VIBRATION PRE

46、VENTION693-927-392-01BUTTON (LOCK)MIC11-542-197-11MICROPHONE, ELECTRET CONDENSER#27-627-850-08SCREW, PRECISION +P 1.4X2#37-627-850-07SCREW, PRECISION +P 1.4X21234555614#2#1#1SP1AAnot supplied(DC-JACK board)461478910111213515657525354555555#2#3#3#2MIC1not supplied(LED board)5960616263646566676869587B

47、M-575/5774-3. MECHANISM DECK SECTION (1)(MB-575-50)Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark1013-306-149-01SPRING, TORSION1023-306-165-01SHAFT (HEAD FITTING)1033-704-375-01SCREW (1.7X5.5), (+P), PRECISION1043-570-558-00SPRING, COMPRESSION1051-548-516-00TIMER, TAPE1063-306-16

48、4-01SPACER (HEAD)1073-302-476-01CLAMP1083-302-464-02GUIDE, TAPE109X-3302-409-0PINCH LEVER ASSY1103-302-459-00CLAW (S), REEL1113-302-460-00CLAW (T), REEL1123-701-436-01WASHER, 1.61133-578-255-11RING (E1.5), RETAINING1143-928-722-01PLATE, COUNTER1153-570-770-00CUSHION (A), MOTOR1163-033-204-02SHAFT, M

49、OTOR FITTING117X-3370-774-1PANEL ASSY, SUB118X-3370-775-1HOLDER ASSY, LID119X-3370-773-1ARM ASSY1203-578-138-01SHIM (t=0.1)1203-578-138-11SHIM (t=0.2)1213-315-384-11WASHER, STOPPER1223-927-428-01RETAINER (A), CASSETTE1233-927-424-01SPRING, TENSION1243-927-425-01SPRING, TENSION1253-924-116-01LEVER, E

50、JECT1263-924-115-01LEVER, LOCK1273-927-427-01SPRING, TENSION1283-927-426-01SPRING, TENSIONHD11-500-271-11HEAD, MAGNETIC (REC/PB/ERASE)M1X-3381-211-1MOTOR ASSY#47-627-451-07SCREW, PRECISION +K 1.4X1.6#57-627-551-17SCREW, PRECISION +P 1.4X2#67-627-551-47SCREW, PRECISION +P 1.4X1.4101102122103104119119