Sony-BM23MK2-tape-sm 维修电路原理图.pdf

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1、SERVICE MANUALSony CorporationPersonal Audio GroupPublished by Sony Engineering CorporationUS ModelPORTABLE DICTATOR9-879-836-012005H1678-1 2005.08Ver. 1.0 2005.08BM-23MK2Model Name Using Similar MechanismNEWTape Transport Mechanism TypeMB-23MK2-101SPECIFICATIONSRadioFans.CN 收音机爱 好者资料库2BM-23MK2Notes

2、 on chip component replacementNever reuse a disconnected chip component.Notice that the minus side of a tantalum capacitor may bedamaged by heat.Flexible Circuit Board RepairingKeep the temperature of soldering iron around 270C duringrepairing.Do not touch the soldering iron on the same conductor of

3、 thecircuit board (within 3 times).Be careful not to apply force on the conductor when solderingor unsoldering.TABLE OF CONTENTS1.SERVICING NOTES.32.GENERAL.43.DISASSEMBLY3-1.Disassembly Flow .53-2.Cabinet (Rear) Block Assembly .63-3.Control Panel Block Assembly.73-4.AUDIO Board.83-5.Mechanism Deck

4、(MB-23MK2-101) .93-6.Holder Panel Assembly .94.MECHANICAL ADJUSTMENTS. 105.ELECTRICAL ADJUSTMENTS. 106.DIAGRAMS6-1.Block Diagram AUDIO Section . 136-2.Printed Wiring Boards . 146-3.Schematic Diagram AUDIO Board (1/4) . 156-4.Schematic Diagram AUDIO Board (2/4) . 166-5.Schematic Diagram AUDIO Board (

5、3/4) . 176-6.Schematic Diagram AUDIO Board (4/4) . 186-7.Schematic Diagram LCD Board . 197.EXPLODED VIEWS7-1.Cabinet Section. 227-2.Chassis Section. 237-3.Mechanism Deck Section-1 (MB-23MK2-101). 247-4.Mechanism Deck Section-2 (MB-23MK2-101). 258.ELECTRICAL PARTS LIST. 26UNLEADED SOLDERBoards requir

6、ing use of unleaded solder are printed with the lead-free mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may not come printed withthe lead free mark due to their particular size): LEAD FREE MARKUnleaded solder has the following characteristics.Unleaded solder

7、melts at a temperature about 40 C higherthan ordinary solder.Ordinary soldering irons can be used but the iron tip has to beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350 C.Caution: The printed pattern (copper foil) may

8、peel away ifthe heated tip is applied for too long, so be careful!Strong viscosityUnleaded solder is more viscou-s (sticky, less prone to flow)than ordinary solder so use caution not to let solder bridgesoccur such as on IC pins, etc.Usable with ordinary solderIt is best to use only unleaded solder

9、but unleaded solder mayalso be added to ordinary solder.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous radiationexposure.SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHE

10、MATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.RadioFans.CN 收音机爱 好者资料库3BM-23MK2SECTION 1SERVICING NOTESThis unit use PH501 (photo coupler) to detect reel r

11、otation.As PH501 is mounted on the AUDIO board, reel rotation will not be detected if the AUDIO board has been removed.When performing mechanism deck operation and voltage checks whit the AUDIO board removed, perform them using the following method.Method:Connect TP32 of the AUDIO board and GND with

12、 a jumper wire.AUDIO BOARD (SIDE B)TP32IC503PH5014BM-23MK2SECTION 2GENERALThis section is extractedfrom instruction manual.5BM-23MK2SECTION 3DISASSEMBLY3-1.DISASSEMBLY FLOW3-3. CONTROL PANEL BLOCK ASSEMBLY(Page 7)3-4. AUDIO BOARD(Page 8)3-5. MECHANISM DECK (MB-23MK2-101)(Page 9)3-6. HOLDER PANEL ASS

13、EMBLY(Page 9)3-2. CABINET (REAR) BLOCK ASSEMBLY(Page 6)SET This set can be disassembled in the order shown below.6BM-23MK23-2.CABINET (REAR) BLOCK ASSEMBLYspeaker1Open the battery case lid in the direction of arrow.4Remove soldering two the four points.5cabinet (rear) block assemblynote : When attac

14、hing the cabinet (rear) block assembly, adjust the position of the three knobs indicated by arrows A and the switch of the AUDIO board.3two screws(+BTP 1.7 10)2screw(M 1.4 5.0)AAAUDIO boardNote: Follow the disassembly procedure in the numerical order given.7BM-23MK23-3.CONTROL PANEL BLOCK ASSEMBLY3c

15、law2two clawsqatwo claws1screw (M1.4)AUDIO board4lever (lock)9lever (lock)6Remove the control panel block assembly in the direction of the arrow.7control button assemblyqdcontrol panel block assembly 8To attach the control panel block assembly , align the three switch positions as shown.qsscrew (M1.

16、4)PRECAUTION DURING CONTROL PANEL BLOCK ASSEMBLY INSTALLATIONcontrol button assembly5control button assembly0claw8BM-23MK23-4.AUDIO BOARD0screw (M1.4 3)1 screw (M1.4 3)4battery case5three cabinet upper cushions8Remove soldering from the seven points.7Remove soldering from the five points.6harnesses3

17、Remove the soldering.qaRemove the AUDIO board complete in the direction of arrow.9 flexible board (CN101) (12core)2screw (1.7 2.5)9BM-23MK23-5.MECHANISM DECK (MB-23MK2-101)2Set the holder panel assembly to eject.4mechanism deck (MB-23MK2-101)lock plate assembly3two screws (M1.4 3.0)note : When attac

18、hing the mechanism deck, set the mechanism deck to stop and adjust the position of shaft-A and part A of the lock plate assembly. shaft-AA1Remove the soldering.4holder panel assembly1While pressing the button (eject), insert the two claws of the holder panel assembly into the holes indicated by arro

19、ws A.2Move the battery coil spring in the direction of the arrow and secure it with the screw.3two screws (M1.4 1.6)AAclawclaw3-6.HOLDER PANEL ASSEMBLY10BM-23MK2SECTION 5ELECTRICAL ADJUSTMENTSSECTION 4MECHANICAL ADJUSTMENTSPRECAUTION1. Clean the following parts with a denatured-alcohol-moistenedswab

20、 :playback headrubber beltscapstanidlerspinch roller2. Demagnetize the playback head with a head demagnetizer.3. Do not use a magnetized screwdriver for the adjustments.4. The adjustments should be performed with the rated powersupply voltage (3V) unless otherwise noted. Torque MeasurementModeTorque

21、 MeterMeter Reading2.06 3.72 mNmFWD21 38 gcmCQ-102C(0.30 0.52 ozinch)0.05 0.29 mNmFWD0.5 3 gcmBack Tension(0.01 0.04 ozinch)2.06 3.72 mNmREV21 38 gcmCQ-102RC(0.30 0.52 ozinch)REV0.05 0.29 mNm0.5 3 gcmBack Tension(0.01 0.04 ozinch)FFCQ-201Bmore than 60 gcmREW(more than 0.84 ozinch)PRECAUTION1. Power

22、supply voltage : 3VTest TapeTape Speed 4.8cm/s AdjustmentSwitch positionTAPE SPEED Switch : 4.8 cmProcedure:1. Play back WS-48A (tape center portion) in FWD mode.Adjust the RV601 so that the frequency counter reads 2,98030 Hz.2. Play back WS-48A (tape center portion) in REV mode.Confirm that the rea

23、ding of frequency counter is within 2.5 %from the reading in step 1.TypeSignalUsed forWS-48A3 kHz, 0 dbTape Speed AdjustmentJ102set18 testWS-48A(3 kHz, 0 dB)frequency counterModeTorque MeterMeter ReadingFFCQ-403Amore than 40 g(more than 1.42 oz)REWCQ-403R Tape Pulling Force Measurement11BM-23MK2Adju

24、stment Parts Location Diagram :Tape Speed 2.4cm/s AdjustmentSwitch positionTAPE SPEED Switch : 2.4 cmProcedure:1. Play back WS-48A (tape center portion) in FWD mode.Adjust the RV602 so that the frequency counter reads 1,49015 Hz.2. Play back WS-48A (tape center portion) in REV mode.Confirm that the

25、reading of frequency counter is within 2.5 %from the reading in step 1.AUDIO BOARD (SIDE B)RV601(TAPE SPEED 4.8cm ADJ.)RV602(TAPE SPEED 2.4cm ADJ.)J102set18 testWS-48A(3 kHz, 0 dB)frequency counter12BM-23MK2SECTION 6DIAGRAMS Note for Printed Wiring Boards and Schematic DiagramsNote on Schematic Diag

26、ram: 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 otherwisespecified. 2 : nonflammable resistor. C : panel designation. H : adjustment for repair. A : B+ Line. Total current

27、 is measured with no cassette installed. Power voltage is dc 3V and fed with regulated dc powersupply from battery terminal. Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to normal productiontolerances. Waveforms are taken with a oscilloscope.Voltage variat

28、ions may be noted due to normal productiontolerances.No mark : PB (LISTEN)() : REC (DICT) Circled numbers refer to waveforms. Signal path.E: PB (LISTEN)a: REC (DICT)Note on Printed Wiring Board: X : parts extracted from the component side. Y : parts extracted from the conductor side.: Pattern from t

29、he side which enables seeing.Caution:Pattern face side: Parts on the pattern face side seen from(Side A)the pattern face are indicated.Parts face side:Parts on the parts face side seen from(Side B)the parts face are indicated.Note: The components identified by mark 0 or dottedline with mark 0 are cr

30、itical for safety.Replace only with part number specified.1 IC701 wd (OSC) 2.1 Vp-p1 s 1 V/DIV, 500 ns/DIV Waveforms LCD Board 1313BM-23MK2BM-23MK26-1.BLOCK DIAGRAM AUDIO SECTION HRP901-1AUDIO HEADHE901ERASE HEADJ101IC501LETTER PB AMPIC701SYSTEM CONTROLLERMIC901MICHRP901-2LETTER HEADQ101, T101BIAS O

31、SCIC101PRE AMPIC102POWER AMPJ102SP501SPEAKERM901MOTORS102(POWER)S402(FF/BACK SPACE)TH601S101(3/4)S602(1/2)S601 (1/2)IC103POWER AMPIC601MOTOR SERVOQ501, Q502AMP CONTROLS101 (1/4)Q504, Q505, Q523E-INDEXQ519SWITCHQ506INVERTERQ512SWITCHLISTEN DICT STOPCONF DICTS103MIC SENSS602 (2/2)TAPE SPEED2.4cm 4.8cm

32、S503X7011MHzLCD701E-INDEXQ161 - Q163LED CONTROLS101 (2/4)FAST PBQ104, Q106MUTEQ102, Q107MUTE CONTROLQ103ATTQ105COMPQ509INVERTERS501OFF ONCUE / REVIEWQ508, Q510, Q520VORS504VORQ701 - Q703LCD DRIVERQ704 - Q706LCD DRIVERQ707 - Q709LCD DRIVERQ710SWITCHQ711SWITCHQ712INVERTERQ713INVERTERIC503VORQ507SWITCH

33、Q111INVERTERQ112SWITCHQ2, Q3, Q5ALARMQ611SWITCHQ521SWITCHPH501PHOTOCOUPLERTAP ADJ.VCC 3VBATTCN102+BQ109, Q110SWITCHDRY BATTERYSIZE AA(ICE DESIGNATION)2PCS, 3.0VDC IN 3.0VQ1, Q4MUTE SWQ715INVERTERQ714INVERTERQ516LED CONTROLIC502BATT VOLTAGE DETIC504DC-DC CONVERTORQ606, Q608VOR CONTROLQ517, Q518BATT D

34、ETQ511SWITCHS502D507ONOFFLOCKD503VR101EARQ601 - Q603,Q605, Q612, Q613SERVO CONTROLQ503, Q513 - Q515PHOTO REFLECTORDETQ522SWITCH1324TAPESPEED ADJ2.4cmRV602VOLUMETAPE SPEED2.4cm 4.8cmMICPLUG IN POWER674232217121315101REC +B+BPLAY +BREC 3VD703PLAY +BREC +BREC3VVCC3VPLAY +BS401(BACK SPACE)D701D702REC +B

35、4158PLAY +B2210OSCBS4IN.CTL7BATT123 OSC21 COM3COM-1SEG 0ISEG7SEG-1ISEG-811, 14 - 206COM2COM-25COM1COM-33VIN3VOUT5RECOVERYTIME CAP1INPUT6OUT17OUT2IN(-)SHUTDOWNOUT(-)OUT(+)TAPESPEED ADJ4.8cmRV6018BATT29PHOTO3POWERS7013V IN1OUT12OUT28VCC3V INBATT+B3VOUTBATTQ610SWITCH4158IN(-)+B+BSHUTDOWNOUT(-)VCC3VREC+

36、BOUT(+)141554VREFIN+UOUTVOUT6WOUT13S/SMQ607SWITCHDICT/BATTLISTEN DICT STOPCOUNTERRESETLISTENDICT STOPS101 (4/4)LISTEN DICT STOPS601 (2/2)FAST PBPLAY +BSignal Path: PB (LISTEN): REC (DICT)1414BM-23MK2BM-23MK26-2.PRINTED WIRING BOARDS Semiconductor LocationRef. No.LocationD161D-3D501C-2D502D-2D503B-6D

37、504C-7D505B-2D506B-3D507B-2Ref. No.LocationD601C-2D701D-9D702D-10D703D-11D704D-10IC101D-6IC102D-6Ref. No.LocationIC103D-7IC501D-7IC502C-6IC503C-8IC504B-3IC601F-7IC701C-10Ref. No.LocationQ1D-2Q2E-2Q3D-2Q4D-2Q5D-2Q101C-6Q102C-7Q103C-6Ref. No.LocationQ104C-6Q105D-7Q106C-6Q107D-7Q109E-3Q110E-3Q111D-6Q11

38、2D-6Ref. No.LocationQ161B-4Q162E-6Q163D-3Q501D-8Q502E-7Q503C-3Q504B-2Q505B-2Ref. No.LocationQ506B-2Q507C-8Q508D-7Q509D-7Q510D-7Q511C-2Q512C-2Q513D-2Ref. No.LocationQ514C-3Q515B-3Q516B-6Q517B-7Q518B-7Q519B-2Q520D-7Q521C-3Ref. No.LocationQ522D-3Q523B-2Q601C-1Q602C-2Q603D-2Q605C-2Q606D-2Q607E-2Ref. No.

39、LocationQ608D-2Q610E-2Q611F-6Q612C-2Q613D-2Q701C-9Q702C-10Q703C-10Ref. No.LocationQ704B-10Q705B-10Q706B-10Q707C-10Q708C-10Q709B-10Q710C-10Q711D-9Ref. No.LocationQ712D-9Q713D-10Q714D-9Q715D-9 :Uses unleaded solder.IC502IC503IC103IC102IC501IC101IC601IC701IC504E-INDEXS503CUE/REVIEWONOFFS501FAST PBS601L

40、OCKS502ONOFFTAPE SPEED2.4cm 4.8cmS501S401(BACK SPACE)S102(POWER)S402(FF/BACK SPACE)VOLUMEVR101HRP901-1AUDIOHEADHE901ERASEHEADDRY BATTERYSIZE AA(ICE DESIGNATION)2PCS, 3.0VEARJ102MIC PLUG IN POWERJ101FB902R106WHTWHTBLKBLKDICTSTOPLISTENS101ONOFFCONDICTVORS504MIC SENSS103REDGRYBLKVIOMICMIC901HRP901-2LET

41、TERHEADSP501SPEAKER*M901MOTOR*M901Exchange the connection of U and Win order to connect the motor in reverse direction.BLKBLK (COM)(COM)(U)(V)(W)WHT (W)RED (V)BRW (U)WHTMDC IN 3VCN102TAPE SPEED4.8cmRV601RV601RV602TAPE SPEED2.4cmRV60212LCD701(LIQUID CRYSTALDISPLAY)X701COUNTERRESETS701D704DICT/BATTD70

42、3GRY1-868-270-1-868-270-12ABCDEGF345679810111515BM-23MK2BM-23MK26-3.SCHEMATIC DIAGRAM AUDIO BOARD (1/4) R507R506R515C503R102R103R512T101R105R112R113R101R513S103R514HE901MIC901J101HRP90TP1TP2TP3TP4TP5TP6TP7TP22TP23TP24R501TP27TP28S101(1/4)S101(2/4)S602(2/2)R115R100TP65TP31TP21TP62TP58R505R114C104C107

43、C109C110C111C148C501C506C101C103C105C108C502C505C520JR204JR108R116JR106C102R503C114R502R106R107R110R109R108Q101Q502Q501IC501R504C1243.3k47k10k330K5.6k330391k47k1k1.8k330k10kERASEHEAD1-12.2k68000.00394.7k0.00560.00680.00330.0150.00470.0010.10.10.135V334V0.4735V474V2.210V3.34V2204V0022k00.1100k1100k10

44、k1K824701002SD1819A-R-TX2SD1819A-R-TX2SB1218A-R-TXNJM2100V(TE1)68k226.3V1616BM-23MK2BM-23MK26-4.SCHEMATIC DIAGRAM AUDIO BOARD (2/4) R119R121VR101R125R132R126R144R145R161R160R151R124Q105R159TP29TP51TP52TP30TP39TP40TP41TP42TP43TP44TP45S101(4/4)R133R123R111R117JR101R135R136R171R169R140R138TP72R168TP68T

45、P63TP69TP67TP71TP59TP60TP70TP75JR901R120FB902FB901R141R152C136R118R142R134R150C140C151C127C123C106C115C118C119C125C129C138C122C153C157C159C113C121C126C131C152C156C158C160R127Q106Q104Q102Q103R122C116C141C144Q107Q111Q112JR151R139R130IC102C137C139IC103S102Q109C150C146C147Q110J102SP501S402CN102IC101S501

46、R158R131C128330k47010K /15A10k1k3.3k47k270100k10k4.7k22UN521518047k2.2k39k3300010k100k22k22k02201kFBFB390k180.127k47k470K2.2k224V1004V2.210V10.010.00470.00110.0010.10.110.1100p0.10.2235V224V4.710V474V224V1 10V0.1224V2.22SB1218A-R-TX2SB1218A-R-TX2SD1819A-R-TX2SD1819A-R-TX2.2k224V2204V0.01UN5214-TXUN5

47、214-TXUN5214-TX0100k100kMM3111AWLE0110VMM3111AWLE(POWER)2SA1362-G-EL0.0010.472204V2SD1819A-R-TXSPEAKER(FF/BACK SPACE)CXA2500N-T43.3k3.3k1004VC1120.01 See page 20 for IC Block Diagrams.1717BM-23MK2BM-23MK26-5.SCHEMATIC DIAGRAM AUDIO BOARD (3/4) HRP901R531R550R529R539C519R523R546R547L501R155TP25TP26TP

48、19TP20TP17TP18TP8TP9TP10TP11TP12TP13TP14TP15TP16R510R511R166R170R528R526R527R561R562R162R163R165R164R552R553C163R524TP73JR203R157C161C162C164C165C507C510C523C508C512C525C526JR205R508R509R548R549D503S401R167Q161Q163R154R153R544Q516R156Q162D161D506D504IC504Q517Q518C509C528Q519Q505Q504Q523S503Q512D505I

49、C502C504Q506S502CN101-21k100k68k100k0.11001k10k680100k75k2.2k1M15k330k330k33k33k10k270k2702.7k1.2k680115k022k0.10.11000p3300p0.10.0220.110 4V334V226.3V226.3V07.5k10k33k11kMA111-TX2202SD1819A-R-TX2SD1819A-R-TX4710k10kXP1501-TXE1002SD1819A-R-TXMA111-TXMA729-TXMA111-TXXC6371A300PRUN5114-TXXN1215-TX0.02

50、20.12SD1819A-R-TX2SD1819A-R-TX2SD1819A-R-TX2SD1819A-R-TX2SD1819A-R-TXMA111-TXMM1210-XFF0.1UN5214-TX12P See page 20 for IC Block Diagram.1818BM-23MK2BM-23MK26-6.SCHEMATIC DIAGRAM AUDIO BOARD (4/4) R530R522R519R521R517R520R543R545R551R538R516S504R618R532R604R605R607R603R602R608R616R2R3R4R7R8*M901R625R