Sony-BM577-tape-sm 电路图 维修手册.pdf

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1、1 SERVICE MANUALUS Model AEP Model BM-575/577 MICROCASSETTETM DICTATOR Ver. 1.1 2006. 10 9-960-235-12 2006J04-1 2006. 10 Sony Corporation Personal Audio Division Published by Sony Techno Create Corporation Photo: BM-575 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 22 Ref.

2、No.Part No.DescriptionRemark 6-2. CHASSIS SECTION Ref. No.Part No.DescriptionRemark 51A-3042-793-A LID ASSY, BATTERY CASE 523-927-394-01SHAFT (BATTERY CASE LID) 533-927-398-01KNOB (TAPE SPEED) * 543-927-393-01SPRING, BATTER CASE LID * 551-657-825-11LED BOARD 56A-3042-788-A CABINET (MIDDLE) ASSY (BM-

3、575) 56A-3042-791-A CABINET (MIDDLE) ASSY (BM-577) 573-927-413-01SPRING, BATTERY 583-306-145-01HOLDER (MICRPHONE) 59A-3042-792-A BUTTON ASSY, CONTROL 603-927-404-01BUTTON (E-INDEX) * 613-927-499-01COVER, BATTERY 623-927-402-01SPRING, TENSION (BM-577) 633-927-401-01LEVER, CHARGE SWITCH (BM-577) 643-9

4、27-399-01BUTTON (EJECT) 653-927-403-01KNOB (FF/CUE) * 66A-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), TAPPING 693-321-813-01WASHER, COTTER POLYETHYLENE 703-701-437-01WASHER * 713-557-857-01CUSHION, VIB

5、RATION PREVENTION 723-309-597-61SCREW (1.4X6), TAPPING MIC11-542-197-11MICROPHONE, ELECTRET CONDENSER 30 BM-575/577 Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark R1731-216-807-11METAL CHIP685%1/16W (BM-575) R1741-216-837-11METAL CHIP22K5%1/16W (BM-575) R1751-216-814-11METAL CHIP

6、2705%1/16W (BM-575) R1751-216-822-11METAL CHIP1.2K5%1/16W (BM-577) R1761-216-200-11METAL GLAZE1.2K5%1/8W R1771-216-841-11METAL CHIP47K5%1/16W S11-762-456-11SWITCH, 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

7、-571-275-31SWITCH, SLIDE (VOR) S61-572-288-11SWITCH, PUSH (FF/CUE) S71-553-817-00SWITCH, 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 OSCILLATION THP101 1-808

8、-956-11THERMISTOR, POSITIVE VR1011-223-749-11RES, VAR, CARBON 10K/10K (VOL) VR1021-238-089-11RES, ADJ, CERMET 4.7K VR1031-238-088-11RES, ADJ, CERMET 2.2K * MISCELLANEOUS * 1051-548-516-00TIMER, TAPE HD11-500-271-11HEAD, MAGNETIC (REC/PB/ERASE) (BM-575) HD11-543-725-11HEAD, MAGNETIC (REC/PB) (BM-577)

9、 HE18-825-772-01ESF194-62G (ERASE HEAD) (BM-577) M1A-3042-785-A MOTOR ASSY MIC11-542-197-11MICROPHONE, ELECTRET CONDENSER SP11-504-961-11SPEAKER * * 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 #47-627-551-17

10、SCREW, PRECISION +P 1.4X2 #57-627-551-27SCREW, PRECISION +P 1.4X2.5 #67-627-551-47SCREW, PRECISION +P 1.4X1.4 #77-627-850-07SCREW, 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, PRE

11、CISION +P 1.4X2.2 #127-671-111-11BALL, STEEL 1.5MM #137-671-155-01BALL, STEEL 3MM * ACCESSORIES & PACKING MATERIALS * 3-800-079-13MANUAL, INSTRUCTION (ENGLISH,FRENCH) (AEP) 3-800-079-22MANUAL, INSTRUCTION (ENGLISH) (US) 3-800-079-43MANUAL, INSTRUCTION (GERMAN,DUTCH) (AEP) 3-927-586-01CASE, CARRYING

12、(BM-577) MAIN 1 US Model AEP Model SERVICE MANUAL Ver. 1.1 2006. 10 SUPPLEMENT-2 File this supplement with the service manual. Subject : Specification change of BM-575 Change to the specifications are made to implement for the model with the serial No. 0100001 and later (US model) or 0101751 and lat

13、er (AEP model). Check the serial No. when servicing or inspecting the set. Mechanical adjustments, electrical adjustments, printed wiring boards, schematic diagram, exploded view and electrical parts list of new type are described in this supplement-2. BM-575/577 9-960-235-82 2 BM-575/577 1. MECHANI

14、CAL ADJUSTMENTS PRECAUTION 1.Clean the following parts with a denatured alcohol moistened swab: record/playback/erase headpinch roller rubber beltscapstan idlers 2.Demagnetize the record/playback/erase head with a head demagnetizer. 3.Do not use a magnetized screwdriver for the adjustments. 4.After

15、the adjustments, apply suitable locking compound to the parts adjusted. 5.The adjustments should be performed with the rated power supply voltage (dc 2.5 V) unless otherwise noted. Switches and control should be set as follows unless otherwise specified. MIC SENS selector: CONF TAPE SPEED selector :

16、 2.4 cm FAST PB switch: OFF VOR switch: OFF VOL control: mechanical center Torque Measurement Mode Torque meter Meter reading (Cassette type) LISTENCQ-103M 5 to 12 gcm (0.069 to 0.167 ozinch) FF/CUECQ-201M more than 5 gcm (more than 0.069 ozinch) B. SPACECQ-201M more than 14 gcm (more than 0.194 ozi

17、nch) Tape Tension Measurement Mode Tension meter Meter reading (Cassette type) LISTENCQ-403M 25 to 55 g (0.88 to 1.94 oz) Timing Adjustment 1.Take-up reel spindle should rotate at the same time as pinch roller or earlier than pinch roller in STOP to LISTEN/DICT mode. Confirm that the pinch roller pr

18、esses to capstan and they rotate. 2.When they are not correctly rotate, adjust the place of adjustment plate so that it is wide. 2. ELECTRICAL ADJUSTMENTS PRECAUTION 1.Demagnetize the record/playback/erase head with a head demagnetizer. 2.Do not use a magnetized screwdriver for the adjustments. 3.Af

19、ter the adjustments, apply suitable locking compound to the parts adjusted. 4.The adjustments should be performed with the rated power supply voltage (dc 2.5 V) unless otherwise noted. 5.The adjustments should be performed in the order given in this service manual. (As a general rule, playback circu

20、it adjustment should be completed before performing recording circuit adjustment.) Switches and control should be set as follows unless otherwise specified. MIC SENS selector: CONF TAPE SPEED selector : 2.4 cm FAST PB switch: OFF VOR switch: OFF VOL control: mechanical center Test Tape TypeSignalUse

21、d for WS-243 kHz, 10 dBTape Speed (2.4 cm) Adjustment WS-123 kHz, 10 dBTape Speed (1.2 cm) Adjustment S-2-A030A3 kHz, 20 dBHead Azimuth Adjustment Tape Speed (2.4 cm) Adjustment Setting: TAPE SPEED selector: 2.4 cm Procedure: 1.Mode: LISTEN FWD idler adjustment plate screw fixing the adjustment plat

22、e 0.3 to 0.6mm 2.Adjust VR102 so that the frequency counter reads 2,990 to 3,010 Hz. Adjustment Location: See page 3. Tape Speed (1.2 cm) Adjustment Setting: TAPE SPEED selector: 1.2 cm Procedure: 1.Mode: LISTEN 2.Adjust VR103 so that the frequency counter reads 2,990 to 3,010 Hz. Adjustment Locatio

23、n: See page 3. set test tape WS-24 (3 kHz, 10 dB) frequency counter EAR jack set test tape WS-12 (3 kHz, 10 dB) frequency counter EAR jack BM-575/577 33 BM-575/577 Adjustment Location:Record Bias Adjustment Setting: TAPE SPEED selector: 2.4 cm Procedure: 1.Mode: DICT (record) Record/playback Head Az

24、imuth Adjustment Procedure: 1.Mode: LISTEN 2.Turn the adjustment screw for maximum digital voltmeter reading. Note: Several peaks may apper, but take the maximum. Adjustment Location: blind plate VR103 (1.2cm) VR102 (2.4cm) TAPE SPEED ADJ set 10 k test tape S-2-A030A (3 kHz, 20 dB) digital voltmeter

25、 EAR jack adjustment hold ornament adjustment screw 2.Mode: LISTEN (playback) 3.LISTEN (playback) the signal recorded in step 1. 4.Turn the VOL control so that the digital voltmeter reads within 0 dB. Confirm that the distortion meter reads within adjustment limits. 5.Set the TAPE SPEED selector to

26、1.2 cm and repeat steps 1 to 4. 6.If the adjustment limits are not satisfied, soldering the tap as follows. Adjustment limits: tape speeddistortion 2.4 cm/swithin 10% 1.2 cm/swithin 14% Soldering Point: main board (conductor side) set 300 6 600 AF OSC attenuator MIC jack 1 kHz, 0.775 mV (60 dB) blan

27、k tape CS-50-4 set 10 k recorded portion digital voltmeter distortion meter EAR jack R176 R136 R132 R142 Q110 C136 C137 R141 C140R145 R177C139 R129C125 R158 TP If the adjustment limits are not satisfied, soldering the tap. 1.2cm2.4cm R123 R118 R173 B A TAPE SPEED R152 IC103 14 85 IC104 1 -1-2 4 85 I

28、C101 14 85 R147 R148 R138 R139 R137 R143 B C E B C E Q104 S7 (POWER) Q116 D103 Q120 B C E B C E E C B E C B E C B B C E S3 S3 Q114 Q105 Q121 YEL WHT E C B Q111 D104 Q117 Q118 B C E B C E B C E Q119 R128 R131 R144 R146 C113 C135 R126 C119 C141 C121 C118 C156 R159 R175 C138 C132 C122 C146 C158 3. DIAG

29、RAMS NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) for schematic diagram: All capacitors are in F unless otherwise noted. (p: pF) 50 WV or less are not in

30、dicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. f: internal component. C : panel designation. A : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack. Vo

31、ltage is dc with respect to ground under no-signal conditions. no mark : LISTEN (2.4 cm) FS: FF/CUE: ON BS: B.SPACE: ON REC: 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

32、 printed wiring boards: X : parts extracted from the component side. Y : parts extracted from the conductor side. : 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 patte

33、rn face are indicated. Parts face side:Parts on the parts face side seen from (Component Side)the parts face are indicated. BM-575/577 44 BM-575/577 3-1. PRINTED WIRING BOARDS 1 A B C D E F G H I J 234567891011121314 MAIN BOARD (COMPONENT SIDE) 1-657-824- (13) 13 VR101 VOL T101 S6 FF/ CUE BLUBLU RED

34、 RED WHT BLK RED RED C1 DC IN 3V ! J1 1-657-826- (13) 12 LED BOARD 1-657-825- (13) 12 D5 DC-JACK BOARD DRY BATTERY SIZE AAA (IEC DESIGNATION R03) 2PCS,3V or RECHARGEABLE BATTERY BP-43 1-657-824-(13) 13 R134 R140 THP101 R176 THP102 R133 R136 R132 R142 Q110 C136 C137 R141 C140R145 R177C139 R129 R172 S

35、9 C125 R158 TP 1.2cm2.4cm R123 R103 ERASEREC/PB HD1 R119 C144 2 S5 1 3 4 R118 R173 B A B A R150 R178 Q124 R160 C149 R157 PH101 C155 C120 D101 D102 R149 R108 R102 C103 R101 S1S2 S2 MIC SENS J2 J2,3 EAR J3 MIC (PLUG IN POWER) VORTAPE SPEED DICT/BATT SP1 MIC1 C130 C160L102 R135 Q106 C154 R115 R116 C108

36、 C112 R113 C143 R114 C110 C109 R112 Q103 R122 D108 R155 R152 C111 IC102 14 85 IC103 14 85 IC104 1 -1-2 4 85 IC101 14 85 C131 C123 C128 C127 C126 R117 R147 R148 R138 R139 R137 C134 R143 B C E B C E Q104 Q122 Q123 S7 (POWER) Q116 S4 S4 FAST PB B.SPACE OFFON OFFON DICT CONF LISTEN DICT E C B Q115 E C B

37、 Q113 Q107 D103 B C E Q120 B C E B C E B C E B C E B C E E C B E C B E C B B C E E C B Q108 E C B Q109 S3 S3 Q114 Q105 Q121 YEL YEL WHT WHT Q112 E C B Q111 VR102 VR103 D104 Q102 Q117 Q118 B C E B C E B C E Q101 B C E B C E B C E B C E Q119 R128 R127 R130 R131 R144 R146 R125 R124 C124 C117 R110 R109

38、R111 C113 C135 R126 C114 R104 C105 C106 R107 C104 R106 C107 R163 R121 R120 L101 C102R105 C101 RED BLU R153 R174 C145 R154 R151 JP101 C119 C141 C159 C116 C142 C121 C118 C148 C156 R159 R175 C129 C138 C132 C133 C122 C146 C158 C147 C115 C157 MAIN BOARD (CONDUCTOR SIDE) M1 -2-1 RED+ BLU WHT BLU BLU YEL Y

39、EL YEL+ -3-4 MOTOR MICROPHONE SPEAKER REC/PB/ERASE HEAD (REC/PB) D5H-14 D101G-10 D102G-10 D103G-7 D104G-6 D108H-10 IC101G-9 IC102F-6 IC103I-6 IC104G-8 PH101H-11 Q101F-9 Q102F-9 Q103H-11 Q104G-9 Q105H-9 Q106G-12 Q107F-7 Q108F-5 Q109F-5 Q110G-6 Q111G-6 Q112G-5 Q113F-7 Q114H-7 Q115F-6 Q116H-6 Q117G-7 Q

40、118H-6 Q119H-6 Q120H-7 Q121H-9 Q122G-10 Q123G-10 Q124H-10 Semiconductor Location Ref. No.Location BM-575/577 55 BM-575/577 3-2. SCHEMATIC DIAGRAM R150R177C141 C140C139 C138 D108 R151 R178R152 C156 C135 C136C137 R146R145R142R144 R143 R148 R147 Q112 C131 R138 R176 R136 S3-1 S4 R141 C133 C134C132 R139

41、MIC1 J3 R101R102 R103 C102 C101 R104R105 C103 S2 C104 C107 C106C105 C130C108 C109 C110 C157C111 R107 R106 R111 R112 C112 R109R110 R114 R113 C113 R172R117 C114 C116 C115 R163 R120 R121 R122 D101 D102 R126 C117R124 C121 C123 C119 C122 C118 C129 C128 C127 C126 C125 R127 R128 R129 R135 S5 R149 D103 R118

42、 D104 R131 R132 Q109 R134R133 C148C149R160 C159 C145 R154 C144 R155 C146 C147 S3-2 R158 R159 R175 R153 C120 R157 C155 R174 C143 C142 R119 R116R115 C158 C154 C160 L101 L102 J2 SP1 C124R125 S1-4 S1-1S1-2 S1-3 HD1 S6 S9 S7 C1 J1 R130 R123 PH101 VR102VR103 THP101 M1 R108 VR101 R173 TP Q123 JP101 IC104 Q

43、118 Q119 Q117 THP102 Q110 Q102 Q101 Q104 IC102 D5 Q122 T101 Q124 R140 IC103 R137 IC101 Q120 Q111 Q121 Q105 Q116 Q115 Q113 Q106 Q103 Q114 Q108 Q107 BM-575/577 66 4. EXPLODED VIEWS Ref. No.Part No.DescriptionRemark 4-1. CABINET SECTION Ref. No.Part No.DescriptionRemark 1A-3042-794-A LID (CASSETTE) ASS

44、Y 23-578-232-21ORNAMENT, ADJUSTMENT HOLE 3A-3042-786-A CABINET (FRONT) ASSY 43-254-135-01SCREW (B1.4) 53-309-597-01SCREW (1.4), TAPPING 63-927-397-01BRACKET, SP 73-927-396-01CUSHION, SP 83-927-395-01SPRING, COMPRESSION 93-926-697-11CABINET (REAR) 103-927-405-01KNOB (MIC SENS) 113-927-406-01KNOB (FAS

45、T PB) 123-927-400-02PLATE, BLIND 133-080-204-11SCREW, TAPPING, P2 142-629-906-01CUSHION SP11-826-070-11SPEAKER (2.8cm) #17-627-451-08SCREW, PRECISION +K 1.4X1.6 #27-627-850-08SCREW, PRECISION +P 1.4X2 NOTE: The mechanical parts with no reference number in the exploded views are not supplied. Items m

46、arked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Color Indication of Appearance Parts Example : KNOB, BALANCE (WHITE) . (RED) Parts Color Cabinets Color Accessories are given in the last of this parts list. RR 4

47、-2. CHASSIS SECTION Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark 51A-3042-793-A LID ASSY, BATTERY CASE 523-927-394-01SHAFT (BATTERY CASE LID) 533-927-398-01KNOB (TAPE SPEED) 543-927-393-01SPRING, BATTERY CASE LID 553-309-597-01SCREW (1.4), TAPPING 56A-3042-788-A CABINET (MIDDLE

48、) ASSY 573-927-413-01SPRING, BATTERY 583-306-145-01HOLDER (MICROPHONE) 59A-3042-792-A BUTTON ASSY, CONTROL 603-927-404-01BUTTON (E-INDEX) 613-927-403-01KNOB (FF) 62A-1119-343-A MAIN BOARD, COMPLETE 633-309-597-61SCREW (1.4X6), TAPPING 643-927-399-01BUTTON (EJECT) 653-927-499-01COVER, BATTERY 663-321-813-01WASHER, COTTER POLYETHYLENE 673-701-437-01WASHER 683-557-857-01CUSHION, VIBRATION PREVENTION 693-927-392-01BUTTON (LOCK) MIC11-542-197-11MICROPHONE, ELECTRET CONDENSER #27-627-850-08SCREW, PRECISION +P 1.4X2 #37-627-850-07SCREW, PRECISION +P 1.4X2 1 2 3 4 5 5 5 6 14 #2