Sony-TCM450DV-tape-sm 电路图 维修手册.pdf

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1、TCM-450DV US Model Canadian Model AEP Model E Model Chinese Model Tourist Model SERVICE MANUAL CASSETTE-CORDER Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 9-877-551-03 2004G02-1 2004.07 SPECIFICATIONS Ver 1.2 2004. 07 Model Name Using Similar MechanismNew Tape t

2、ransport Mechanism TypeMT-450-175 Recording system 2-track 1 channel monaural Speaker Approx. 3.6 cm (1 716 in.) dia. Tape speed 4.8 cm/s (1 78 ips) or 2.4 cm/s (1516 ips) Variable range of the tape speed From approx. +30% to 20% (with REC TIME/PLAY MODE switch at “NORMAL”) Frequency range 250 - 6,3

3、00 Hz using nomal (TYPE I) cassette (with REC TIME/PLAY MODE switch at “NORMAL”) Input Microphone input jack (minijack/ monaural/PLUG IN POWER) sensitivity 0.2 mV for 3 k or lower impedance microphone Output Earphone jack (minijack/ monaural) for 8 - 300 earphone Power output (at 10 % harmonic disto

4、rtion) 450 mW Power requirements 3 V DC, batteries R03 (AAA) x 2/ External DC 3 V power sources Dimensions (w/h/d) (incl. projecting parts and controls) Approx. 86.3 x 113.4 x 28.9 mm (3 12 x 4 12 x 1 316 in.) Mass (main unit only) Approx. 173 g (6.2 oz.) Supplied accessory Carrying pouch (1) Design

5、 and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 2 TCM-450DV TABLE OF CONTENTS 1.GENERAL.2 2.DISASSEMBLY.3 2-1. Cabinet (Rear) .3 2-2. Main Board .4 2-3. Mechanism Deck (MT-450-175).4 2-4. Belt (Counter), Belt (Cap)S, M901 (Capstan/Reel Motor), HRP901 (REC/PB Head),

6、HE901 (ERASE HEAD) .5 2-5. Cassette Lid Assy, Led Board .5 3.MECHANICAL ADJUSTMENTS.6 4.ELECTRICAL ADJUSTMENTS.6 5.DIAGRAMS 5-1. Block Diagrams.7 5-2. Printed Wiring Board MAIN Section (Side A) .8 Printed Wiring Board MAIN Section (Side B) .9 5-3. Schematic Diagram MAIN Section (1/2) .10 5-4. Schema

7、tic Diagram MAIN Section (2/2) .11 5-5. IC BLOCK DIAGRAMS.12 6.EXPLODED VIEWS 6-1. Cassette Lid, Cabinet (Rear) Section .13 6-2. Cabinet (Front) Section .14 6-3. Mechanism Deck Section-1 (MT-450-175) .15 6-4. Mechanism Deck Section-2 (MT-450-175) .16 7.ELECTRICAL PARTS LIST.17 Flexible Circuit Board

8、 Repairing Keep the temperature of the soldering iron around 270 C dur- ing repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement Never

9、reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. SECTION 1 GENERAL This section is extracted from instruction manual. REC/BATT REC TIME/ PLAY MODE* VOR TAPE COUNTER x STOP m REW/REVIEW PAUSE . MIC (PLUG IN POWER)* EAR Microphone DC IN

10、3V z REC Tape counter reset button * The button/jack has a tactile dot. RadioFans.CN 收音机爱 好者资料库 3 TCM-450DV SECTION 2 DISASSEMBLY This set can be disassembled in the order shown below. 2-1.CABINET (REAR) Note: Follow the disassembly procedure in the numerical order given. Cassette lid assy, LED boar

11、d Cabinet (front)Main board Belt (Counter), Belt (CAP) S, M901 (Capstan/reel motor), HRP901 (REC/PB head), HE901 (ERASE head) SetMechanism deck Cabinet (Rear) 1 two screws (B1.7 X 9) 7 speaker (SP1) 2 two screws (1.7 X 3) 8 cabinet (rear) cabinet (front) 6 two screws (B2.0) 5 Remove solder on MAIN b

12、oard (two places) 3 claw 4 MAIN board S501 RV101 RV201 knob (speed) sub assy knob (VOL) knob (VOR) On installation cabinet (rear), adjust the S501 and knob (VOR). On installation cabinet (rear), adjust the RV201 and knob (speed) sub assy. On installation cabinet (rear), adjust the RV101 and knob (VO

13、L). RadioFans.CN 收音机爱 好者资料库 4 TCM-450DV 2-2.MAIN BOARD GRY ORG BLK BLK RED RED 3 screw (B1.7 X 9) 7 MAIN board 4 screw (1.4 X 3) 5 screw (1.4 X 4.5) cabinet (front) 1 Remove solder (three places) 2 Remove solder (eight places) 6 S301 knob (pause) On installation MAIN board, adjust the S301 and knob

14、(pause). 2-3.MECHANISM DECK (MT-450-175) 1 two screws (M1.4) 2 screw 5 spring (ground) cabinet (front) 4 mechanism deck (MT-450-175) 3 5 TCM-450DV 2-4.BELT (COUNTER), BELT (CAP) S, M901 (CAPSTAN/REEL MOTOR), HRP901 (REC/PB HEAD), HE901 (ERASE HEAD) 1 belt (counter) 2 belt (CAP) S 3 two screws (M1.4X

15、1.4) 5 two screws (M1.4X1.4) 7 screw (M1.4X4.5) 6 HRP901(REC/PB head) 8 HE901 (ERASE head) 4 M901 (capstan/reel motor) 2-5.CASSETTE LID ASSY, LED BOARD Install the cassette lid assy with the cassette-up spring as shown in the figure so that it fits into the holes on the casstte lid assy. 2 4 1 Remov

16、e solder on MAIN board (three places) MAIN board 3 projection 5 cassette-up spring 6 cassette lid assy 7 two screws (M1.4) 8 LED board cassette lid assy cassette-up spring cabinet (front) 6 TCM-450DV SECTION 3 MECHANICAL ADJUSTMENTS Tape Tension Measurement 1. Clean the following parts with a denatu

17、red-alcohol-moistened swab: record/playback headpinch roller erase headrubber belt capstan 2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustme

18、nts, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. ModeTorque MeterMeter Reading 1.97 3.92mNm FWD(20 40 gcm) CQ-102C (0.28 0.55 ozinch) 0.05 0.49 mNm Forward Back (0.5 5 gcm) Tension (

19、0.007 0.069 ozinch) FF, REWCQ-201B more than 4.91 mNm (more than 50 gcm) (more than 0.69 ozinch) ModeTension MeterMeter Reading FWDCQ-403A more than 50 g (more than 1.76 oz) Torque Measurement SECTION 4 ELECTRICAL ADJUSTMENTS Tape Speed Adjustment Mode: playback Setting: Supplied voltage: 2.5 V Swit

20、ch and control position VOL contorl (RV101): mechanical center PAUSE switch (S301): OFF SPEED CONTROL (RV201): center click VOR switch (S501): OFF Test Tape 0 dB=0.775 V TypeSignal Used for WS-48A3 kHz, 0 dBtape speed adjustment frequency counter test tape WS-48A (3 kHz, 0 dB) 16 EAR jack (J102) set

21、 + RV602 Tape Speed Adjustment (Double Speed) RV601 Tape Speed Adjustment (Normal Speed) Procedure: 1. Set RECTIME/PLAYMODE switch (S601) to NORMAL (4.8 cm/s) position, and playback the tape (WS-48A) . 2. Adjust RV601 so that frequency counter reading becomes 3,000 Hz. Specification values: 2,985 to

22、 3,015 Hz 3. Set RECTIME/PLAYMODE switch (S601) to DOUBLE (2.4 cm/s) position. 4. Playback the tape from the beginning for two minutes, then adjust RV602 so that frequency counter reading becomes 1,500 Hz. Specification values: 1,493 to 1,507 Hz Confirm that deflection of the frequency counter readi

23、ng between the beginning and the end of tape is within 2% (NORMAL: approx. 60 Hz, DOUBLE: approx. 30 Hz) . Adjustment Location: MAIN BOARD (Side B) TCM-450DV 77 5-1.BLOCK DIAGRAM S 1011 14 17 19 16 6 9 5 6 2 4 13 2 20 DRIVE FEEDBACK POWER ON DETECT Q901 LED DRIVER Q703, 706 BRAKE SWITCH Q601,603 F F

24、 OSC Q704 OSC LOGIC CIRCUITY S101 (5/6) REC PB RIPPLE FILTER 7 1 REC ALC REC VOR START/STOP SETECT Q305,D301 SWITCH Q804 J101 MIC (PLUG IN POWER) MIC1 MIC S101 (2/6,3/6) REC PB Q301 M901 CAPSTAN/ REEL MOTOR D701 REC/BATT D302 +B REEL PH801 HRP901 REC/PB HEAD HE901 ERASE HEAD +B U OUT V OUT W OUT VCC

25、 U V W TAPE SPEED (NORMAL) VCC 14 VREF 15 IN+ S/S S601 (1/2) REC TIME/ PLAY MODE NORMAL DOUBLE PRE AMP IC101 (1/2) BTL POWER AMP IC101 (2/2) NC RFLT IN PRE OUT RFLT OUT +VDD PRE2 IN PRE2 NF 22REG REG OUT +VREF SP IN ALC IN MOTOR DRIVER IC601 SP1 (SPEAKER) J102 EAR S501 VOR OFF ON RV601 RV601 TAPE SP

26、EED (DOUBLE) RV602 RV602 RV201 RV201 S601 (2/2) REC TIME/ PLAY MODE DOUBLENORMAL SPEED CONTROL FASTSLOW S101 (6/6) PB REC S101 (4/6) REC PB S301 PAUSE Q802Q407 Q408 Q409 Q413 Q412 Q402 Q405 Q410 GATE Q402,407,409 DIFFERENTIAL DETECT ON OFF RV101 VOL D702 23 +1.7V REG. IC102 VOUTVDD 21 LEVEL DETECT I

27、C701 VOUTVDD +VCC +VCC Q902 Q702 Q302 3 21 PRE1 OUT PRE1 NF PRE1 IN +VREF 5 23 LED DRIVER Q701 +B SWITCH Q705 DELAY SWITCH DRIVE Q602,604 REEL ROTATION DETECT Q801,803 SWITCH Q411 S102 (POWER) J901 DC IN 3V DRY BATTERY SIZE AAA (IEC DESIGNATION R03) 2PCS, 3V S401 FF/REW DETECT S602 (FF/REW) +B SWITC

28、H Q404 +VCC +VDD +B +B BUFFER Q401,403 GATE Q805 S101 (6/6) REC PB Q303,304 MUTE Signal path. E: PB a: REC SECTION 5 DIAGRAMS TCM-450DV 88 5-2.PRINTED WIRING BOARD MAIN SECTION (SIDE A) BOARDMAIN (SIDE A) 1 23 4 12 34 R802 R407 R312 PH801 R709 R708 R706 R409 R704 R717 R713 R401 R707 R702 R703 R410 R

29、803 R113R114 R109 R115 C703 C117 C120 IC102 C606 C608 C401 C402 R107 C122 R128 R901 C501 C901 R908 R907 R902 Q902 Q901 C504 C406 C701 C114 R104 R103 R308 R608 R610 R617 R712 R614 R616 R613 R612 R307 R105 C105 C106 C610 C125 S301 S601 REC TIME /PLAY MODE NORMALDOUBLE S501 C124 Q602 Q603 Q705 Q404 E E

30、 E Q805 Q410 Q402 Q702 Q701 Q703 IC701 Q601Q604 C306 C108 C502 R310 R110R129 R111R127 Q413 S102 (POWER) S602 (FF/REW) Q412Q411 E E E E B C E C B E E E E E EE EEE PAUSE. ON OFFt ON OFF t VOR t 11 (11) 1-860-840- 23456789 A 1 B C D E F Note: X : parts extracted from the component side. r: Through hole

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 B)the pattern face are indicated. Parts face side:Parts on the parts face side seen from (Component A)the parts face are indic

32、ated. Ref. No.Location IC102D-7 IC701E-3 Q402E-4 Q410E-4 Q411B-6 Q412B-6 Q413B-6 Q601D-3 Q602D-3 Q603D-3 Q604D-3 Q701E-3 Q702E-3 Q703E-2 Q705E-3 Q805E-3 Q901E-6 Q902E-6 Semiconductor Location TCM-450DV 99 PRINTED WIRING BOARD MAIN SECTION (SIDE B) VOL SPEED CONTROL C312 C103 C115 C113 C101 C102 C104

33、 R315 R313 R309 C107 R314 R316 R302 C301 R304 R201 R124 S101 PB REC R108 C308 R806 Q801 Q803 S401 (FF/REW DET) R402 R403 R716 R807 R609 R606 R611 RV101 RV201 R125 R119 IC101 R502 C309 C302 C311 C303 2413 112 IC601 2011 110 R118 R120 C111 C112 C307 C119 C305 C123 R311 C109 R405 R408 R406 R809 C802 R8

34、10 R714 R607 W601 W602 W603 W604 VCC U V W W704 W705 W706 SL1 W303 W201 W202 W104 W103 W304 R112 R404 R301 R808 R603 R615 R602 R601 R605 C116 C505 R102 R305 R303 R318 C803 C601 C604 C607 C602 C801 C404 C705 C609 C403 C405 C605 C706 C704 C315 C314 Q409 Q303 Q405 Q408 Q804 Q407 Q403 1 E E E E E E E E

35、E E E E 23 123 Q401 Q706 BEB C C Q704 Q802 Q305 Q304 Q302 Q301 D301 D801 D302 THP601 RV601RV602 TP14 TP27 TP13 TP4 J101 TP3 TP11 TP33 J102 TP30 TP18 TP17 TP20 TP19 TP21 TP15 TP23 TP34 TP12 TP801 TP804 TP10 TP26 TP28 TP32 TP22 TP25 TP29 TP31 J901 TP805TP803 TP802 TP16 TP24 11 (11) 1-860-840- 11 (11)

36、1-860-841- (SIDE B)BOARDMAIN BOARDLED HE901 ERASE HEAD HRP901 RECORD/ PLAYBACK HEAD MIC1 MIC (PLUG IN POWER) EAR W V U VCC M901 CAPSTAN/REEL MOTOR DC IN 3V E -1 -4-5-6 -2-3 E E E SP1 SPEAKER DRY BATTERY SIZE AAA (IEC DESIGNATION R03) 2PCS, 3V M703 M702 M701 D702 D701 REC /BATT 2345678910 A 1 B C D E

37、 F Ref. No.Location D301B-3 D302B-3 D701F-4 D702F-6 D801E-5 IC101E-4 IC601C-7 Q301B-3 Q302B-3 Q303E-5 Q304B-3 Q305B-3 Q401D-7 Q403E-7 Q404E-6 Q405E-5 Q407D-7 Q408E-7 Q409E-6 Q704D-7 Q706D-8 Q801E-5 Q802D-6 Q803E-6 Q804E-6 Semiconductor Location TCM-450DV 1010 5-3. SCHEMATIC DIAGRAM MAIN SECTION (1/2

38、) IC101 D301 S601(2/2) D302 C101 C102 C103 C104 C108 C504 C308 C309 C312C303 C305 C307 C114 R304 R305 S501 R312 R201 R112 R113 R114 C119 R120 R311 R310 R315 R316 C113 C115 C401 C402 R109 R115 C124C125 C123 C120 R303 R102 C105 R104 C106 R105 R308 C107 C109 C302 R901 R907R908 C901 R110R127 R129 C122 R

39、128 R111 C116 C117 C501 R125 R405 R406 R407 R408 R314 R301 C111 R108 C112 C306 S602 R410 R103 R107 R307 R318 S101(2/6) S101(3/6) S101(5/6) S101(6/6) S101(4/6) J102 J101 IC102 R313 S301 Q902 Q901 RV101 Q301 Q411 Q305 Q303 Q404 R119 R124 R118 R902 Q302 SP1 C301 R309 Q413 Q412 Q405 Q402 HRP901 C502 R50

40、2C505 R302 C311 Q304 MIC1 HE901 BH3682FV 1SS355TE-17 1SS355TE-17 0.1 0.1 0.01 0.01 10 10V 0.01 2.2 10 10V 10 10V 220 4V 2.2 4.7 4V 0.22 10k 22k 22 22 2.2k 2.2k 220k 0.01 1k 1M 470 4.7k 4.7k 10 10V 1 1 1 470 470 10 10V 10 10V 0.01 0.01 2.2k 100k 4700p 100k 0.01 47k 22k 1 16V 2200p 10 10V 2.2k 220k47k

41、 1 22k22k 47k 0.22 470 22k 0.022 1000p 1 2.2k 1k 100k 4.7k 10k 1k 470 4700p 1k 1 10 10V (FF/REW) 22k 10k 220 22k 22k MM3031HULE 2.2k 2SA1576A SWITCH 2SC4081T106Q POWER ON DETECT 5k DTC114TUA-T106 SWITCH DTA114YUA-T106 SWITCH 2SA1576A-T106-QR START/STOP SELECT DTC114YUA-T106 MUTE 2SA1576A-T106-QR +B

42、SWITCH 470 220 220 220k DTC144EUA-T106 BUFFER 22 6.3V 10k DTC114YUA-T106 INVERTER DTC114YUA-T106 INVERTER 2SC4081T106Q INVERTER DTA114YUA-T106 DIFFERENTIAL DETECT 4.7 4V 10k0.047 2.2k 470 4V 2SC4213-AB-TE85L MUTE MIC GND VOR ALC PH POWER VCC PAUSE GATE REEL GND VDD CE VOUT PBREC PBREC PBREC PBREC ON

43、OFF VOR ONOFF VOL EAR MIC (PLUG IN POWER) PRE AMP BTL POWER AMP +1.7V REG. RECPB PAUSE SPEAKER HEAD RECORD/ PLAYBACK HEAD ERASE PRE1 NF REG OUT PRE1 OUT PRE2 IN VOR TAU VOR C VOR IN VOR OUT SP BIAS SP2 OUT PWR VCC PRE1 IN PRE GND PRE2 NF VOR CTRL PRE2 OUT ALC TAU ALC DETIN SP IN SP1 OUT SP GND PRE V

44、CC RFLTIN RFLTOUT TCM-450DV 1111 5-4. SCHEMATIC DIAGRAM MAIN SECTION (2/2) IC601 S601(1/2) C601 C607 C609 C602 C606 C608 C701 C703 C605 R717 R702 R703 R706 R707 R708 D701 D702 R607 R714R713 R716R712 C704 C705 Q801 Q803 R704 R709 C706 C801 R806 C314 C315 R601 R603 R605 R615 R608R610 R606 R609 R612R61

45、3 R617 R616 R614 C610 C802 R809 R810 C405 R402 R403 C403 C404 R404 C803 R807 R808 R401 C406R409 R611 S102 S401 S101(1/6) IC701 THP601 R602 Q701 Q702 Q704 Q706 Q703 Q603Q601 Q602 Q604 RV201 RV602 RV601 Q804 Q805 Q401 Q403 Q705 Q410 D801 PH801 J901 Q802 Q408 Q407 Q409 R802 R803 C604 LB1979VS-TLM-E 0.4

46、7 0.047 0.22 0.047 0.047 0.047 0.47 1 10 10V 4.7k 1k 220 1k 1M 2.2k BR1113F-TR FY1113F-TR 1M 22k22k 470k470k 1 1 2SC4081T106Q 2SC4081T106Q 220k 1k 22 6.3V 0.1 1M 470 4V1000p 470 10k 10k 47k 1M1M 2.2k 100k 100100 47k 10k 10k 10 10V 10 10V 1M 220k 10 10V 47k 10k 1 1 22k 1 47k 220k 22k 2.2100k 10k (POW

47、ER) (FF/REW DET) PST3720UL 3.3K 0 XP4601-TXE LED DRIVER DTC114TUA-T106 INV. XP1501-TXE FF OSC DTC114YUA-T106 LED DRIVER DTA114YUA-T106 LED DRIVER 2SA1745-TL-E BRAKE SWITCH 2SA1745-TL-E BRAKE SWITCH 2SC4081T106Q SWITCH DRIVE DTA114YUA-T106 SWITCH DRIVE 30k 2.2k 4.7k DTA114TUA-T106 SWITCH 2SC4081T106Q GATE 2SA1576A-T106-QR BUFFER DTC114YUA-T106 BUFFER DTA114TUA-T106 +B SWITCH 2SA1576A-T106-QR GATE 1SS355TE-17 DTA114YUA-T106 INVERTER DTC114YUA