Sony-TCM900DV-tape-sm 电路图 维修手册.pdf

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1、Ver. 1.1 2007.01 TCM-900DV SERVICE MANUAL CASSETTE-CORDER SPECIFICATIONS US Model Canadian Model AEP Model Tourist Model 9-873-082-12 2007A02-1 2007.01 Sony Corporation Personal Audio Division Published by Sony Techno Create Corporation Model Name Using Similar MechanismNEW Tape Transport Mechanism

2、TypeMT-900-175 Recording system 2-track 1 channel monaural Tape speed 4.8 cm/s or 2.4 cm/s Frequency range 150 - 6 300 Hz using nomal (TYPEI) cassette (with REC TIME switc hat “NORMAL”) Speaker Approx. 3.6 cm (1 7/16 in.) dia. Power output 250 mW (at 10 % harmonicdistortion) Input Microphone input j

3、ack (minijack) sensitivity 0.12 mV for 3 kilohms or lower impedance microphone Output Earphone jack (minijack) for 8 -300 ohms earphone Variable range of the tape speed From approx. +100% to 50% (with REC TIME switch at “NORMAL”) From approx. +100% to 30% (with REC TIME switch at “DOUBLE”) Variable

4、range of pitch control variation Approx. +1 octave to 1 octave Power requirements 3 V DC batteries R6 (AA) x 2 External DC 3 V power sources Dimensions (w/h/d) (incl. projecting parts and controls) Approx. 86.7 x 112.8 x 35.7 mm (3 1/2 X 4 1/2 X 1 7/16 in.) Mass Approx. 200g (7.1 oz.) Supplied acces

5、sories Headphones with remote control (1) R6 (size AA) batteries (2) (“Sony World Model” only) Carrying pouch (1) Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 2 TCM-900DV Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270

6、C during 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 reuse a disconnected chip component. Notice that the minus side of

7、a tantalum capacitor may be dam- aged by heat. TABLE OF CONTENTS SECTION 1 GENERAL This section is extracted from instruction manual. Specifications . 1 1.GENERAL Location of Parts and Controls . 2 2.DISASSEMBLY 2-1. Cabinet (Rear), Cassette Lid ASSY. 3 2-2. Main Board . 4 2-3. Mechanism Deck . 4 2-

8、4. Belt (AR), M601 (Capstan/reel motor), HRPE901 (REC/PB/ERASE head) . 5 2-5. SW Board . 5 3.ADJUSTMENTS 3-1. Mechanical Adjustments. 6 3-2. Electrical Adjustments. 6 4.DIAGRAMS 4-1. Block Diagrams -Main Section (1/2) - . 9 4-2. Block Diagrams -Main Section (2/2) - . 10 4-3. Schematic Diagram - Main

9、 Section (1/3) -.11 4-4. Schematic Diagram - Main Section (2/3) -. 12 4-5. Schematic Diagram - Main Section (3/3) -. 13 4-6.Printed Wiring Boards -Main Section (side A)- . 14 4-7.Printed Wiring Boards -Main Section (side B)- . 15 4-8.Printed Wiring Boards -SW Section (side A)-. 16 4-9.Printed Wiring

10、 Boards -SW Section (side B)-. 17 4-10.Schematic Diagram - SW Section - . 18 4-11.Explanation of IC Terminals. 19 5.EXPLODED VIEWS 5-1. Main Board, Cabinet (Rear) section . 22 5-2. Cassette Lid Section . 23 5-3. Mechanism deck Section -1(MT-900-175). 24 5-4. Mechanism deck Section -2 (MT-900-175). 2

11、5 6.ELECTRICAL PARTS LIST .26 Location of parts and controls RadioFans.CN 收音机爱 好者资料库 3 TCM-900DV SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. The equipment can be removed using the following procedure. Cassette lid assy Cabinet (front) SW board Main boa

12、rd Belt (AR), M601 (Capstan/reel motor), HRPE901 (REC/PB/ERASE head) Set Mechanism deck Cabinet (Rear) 2-1. CABINET (REAR), CASSETTE LID ASSY Cassette lid assy Note on installing the cassette lid assy Install the cassette lid assy with the spring(toggle) as shown in the figure so that it fits into t

13、he holes on the cassette lid assy. 7Slide the projection of lever ASSY, FWD return fully in the arrow direction and remove it. 8Spring (toggle) 1Screws (+B1.7X 9) 2Screws (+B1.7X 9) 5Open Lever ASSY, FWD return 6SW flexible board (Main board:CN901) Hand strap Cabinet (Rear) 3Claws 4 9 Cabinet (front

14、) Cassette lid ASSY SW flexible board Note on installing the SW flexible board Insert the SW flexible board as shown in the figure. RadioFans.CN 收音机爱 好者资料库 4 TCM-900DV 2-2. MAIN BOARD 2-3. MECHANISM DECK 5Screws (M1.4) 6 Black Main board Orange White Red 2Flexible board ( from HPR901/HE901) 1Remove

15、soldering four lead wires (from M601) 4Spring, ground 3Screw Cabinet (front) 1Screws ( IB LOCK ) Mechanism deck ( MT-900-175) Cabinet (front) 2 5 TCM-900DV 6Washer 5Washer (stopper N) 9Screws (M1.4) 0HRPE901 (REC/PB/ERASE head) 6Washer 5Washer (stopper N) 3M601 (Capstan/reel motor) 2Screws (M1.4) 4P

16、ulley (reverse) 8Washer 8Washer 7Fly ASSY,Capstan 7Fly ASSY,Capstan 1Belt (AR) Attaching belt (AR) z 2-5. SW BOARD 2-4. BELT (AR), M601 (CAPSTAN/REEL MOTOR), HRPE901 (REC/PB/ERASE head) Cover, cassette lid SW board Lever assy, FWD return Cassette lid assy 1Screws (+B1.7X 3) Lead Wires (from SP901) L

17、ead wires ( from MIC901) 4Remove solder ( two places) 3Remove solder ( two places) 5Flexible board ( from LCD901) 6 2 TCM-900DV 6 3-2. ELECTRICAL ADJUSTMENTS Standard Level Input signal levelMIC 60dBs Output signal levelEAR (EARPHONE)1.6k, 22,4dBs Test Tape TypeSignalUsed for WS-48A3kHz, 0dB tape sp

18、eed adjustment 0dB=0.775V Setting : VOL Control (RV301): mechanical mid REC TIME (S903): normal(4.8cm/s) SPEED CONTROL (RV901): normal (center click) DPC(MANUAL) Adjustment Setting : DPC(S904) switch: MANUAL Tape speed: 4.8cm/s Mode: PLAY Procedure : MAIN BOARD(SIDE B) 1. Connect the freguency count

19、er to TP47 and TP8(GND). 2. Adjust RV401 so that the freguency at TP47 becomes 220 Hz. Standard value : 117 to 223 Hz Adjustment Location : Main board (See page 7) SECTION 3 ADJUSTMENTS 3-1. MECHANICAL ADJUSTMENTS PRECAUTION 1. Clean the following parts with a denatured alcohol-moistened swab : reco

20、rd/playback/erase headpinch roller rubber belts capstan 2. Demagnetize the record/playback head with a head demagne- tizer. (Do not bring the head demagnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compo

21、und to the parts adjusted. 5. The adjustments should be performed with the rated power sup- ply voltage unless otherwise noted. 6. Power supply voltage : 3V DC. Torque Measurement ModeTorque MeterMeter Reading ForwardCQ-102C 1.97 to 3.92 mN m (20 to 40 g cm) (0.28 to 0.55 oz inch) ForwardCQ-102C 0.0

22、5 to 0.49 mN m (0.5 to 5.0 g cm) (0.007 to 0.07 oz inch) Fast Forward more than 4.90 mN m and Rewind CQ-201B(50 g cm) (0.7 oz inch) Tape Tension Measurement ModeTension MeterMeter Reading ForwardCQ-403A more than 50g ( 1.77oz) /Reverse 136 25 48 35 15 40 12 30 2420 3745 5 10 13 L401 IC401 R409 C420

23、C422 R417 R416 C416R405 R402R406 R407 RV401 C401 304 8 C410 C402C403 C414 C415 R403 R404 R401 C412 C413 C407 TP46 TP82 TP47 TP51 TP63 + frequency counter TP47 TP8(GND) Note: Adjust before the tape speed adjustment TCM-900DV 7 Tape Speed Adjustment Procedure : TP8(GND) TP47 RV601 RV401 DPC (MANUAL) A

24、djustment RV602 RV603 RV604 IC401 1 48 Tape Speed Adjustment MAIN BOARD (B side) Adjustment Location : Main board (B side) set test tape WS-48A (3kHz, 0dB) 10k EAR (earphone) jack (J102) digital frequency counter Note: Adjust on both sides DIR switch (S701) “ b “ and “ B “. 1. Set DPC switch (S904)

25、to OFF, PITCH CONTROL switches (S910, 911) to the center and play the test tape WS-48A. 2. Set REC TIME switch (S903) to NORMAL (4.8cm/s) and turn SPEED CONTROL knob (RV901) fully to FAST. 3. Adjust RV601 so that the reading on the frequency counter becomes 6000Hz. 4. Turn SPEED CONTROL knob (RV901)

26、 to the center and adjust RV602 so that the reading on the frequency counter becomes 3010Hz. 5. Set REC TIME switch (S903) to DOUBLE (2.4cm/s) and turn SPEED CONTROL knob (RV901) fully to the center. 6. Adjust RV603 so that the reading on the frequency counter becomes 1505Hz. 7. Turn SPEED CONTROL k

27、nob (RV901) fully to SLOW. 8. Adjust RV604 so that the reading on the frequency counter becomes 1050Hz. 9. Turn SPEED CONTROL knob (RV901) fully to FAST and confirm the reading on the frequency counter becomes approx. 3010Hz. 10.Set REC TIME switch (S903) to NORMAL (4.8cm/s) and turn SPEED CONTROL k

28、nob (RV901) fully to SLOW. 11.Confirm the reading on the frequency counter becomes approx. 1505Hz. TCM-900DV 8 z Waveforms 2 4 5 IC301 ql IC401 ej IC901 2 PB mode VOLT/DIV : 1 V AC TIME/DIV : 0.2 sec PB (DPC AUTO) mode VOLT/DIV : 1 V AC TIME/DIV : 1 sec REC/PB mode VOLT/DIV : 1 V AC TIME/DIV : 10 se

29、c MAIN SECTION (1/3) MAIN SECTION (3/3) SW SECTION MAIN SECTION (2/3) 3.6 Vp-p 0.25 sec 3.8 Vp-p 1.30 sec 25 sec 3.6 Vp-p Note on Schematic Diagram: MAIN SECTION All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistor

30、s are in and 1/4 W or less unless otherwise specified. f: internal component. C : panel designation. Note: Note: The components identi- Les composants identifis fied by mark 0 or dotted par une marque 0 sont cri- line with mark 0 are cri- tiques pour la scurit. tical for safety. Ne les remplacer que

31、 par Replace only with part une pice portant le number specified. numro spcifi. : B+ Line. H : adjustment for repair. Power voltage is dc 3V and fed with regulated dc power supply from battery terminal. Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : PLAY (

32、DPC OFF) (): REC : PLAY (DPC AUTO) 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 variations may be noted due to normal produc- tion tolerances. Signal path. E: PB a: REC3.8

33、 Vp-p 0.25 sec 3 IC701 wh REC/PB mode VOLT/DIV : 1 V AC TIME/DIV : 0.2 sec SECTION 4 DIAGRAMS 1 T101 REC mode VOLT/DIV : 5 V AC TIME/DIV : 5 sec 30 Vp-p 20.0 sec 99 TCM-900DV 4-1. BLOCK DIAGRAMS MAIN SECTION (1/2) MIC901 S901 J101 RV401 T101 X401 Q111 Q101 RV601 RV602 RV603 RV604 M601 RV901 DPC 768k

34、Hz MOTOR FLAT MIC MIC SENS LH SPEED CONTROL L R R FWD REV RECORD/ FWD REV PB REC FWD REV FWD REV PB REC PB REC - +PRE +IN PRE AMP RIPPLE FILTER PRE OUT PRE IN RF OUTRF IN PB REC MIN LPF20LPF21A INBUF OUTBUF INA OUT OSC1I FIN CP OUT CP IN CP REF XTLO XTLI RESETN LPF1ILPF1O MOD0 MOD1 MOD2 MOD3 FXIN OS

35、C1O OSC2I OSC2O SPEED CTL PIC MC1 PIC CTL MOTOR CTL PIC RST OUT VSP IN+ S/S COM OSC UOUT VOUT WOUT L HRPE901 HEAD ERASE PLAYBACK/ S102-2 S101-4 S102-1 S101-3 MIC (PLUG IN POWER) MIC POWER Q107 ATT Q104 S101-2 BIAS SWITCH Q106 +1.8V REG S101-1 DIGITAL PITCH CONTROL D/AA/DLPFLPF DATA RAMDSP KEY SHIFT

36、CONTROL TIMING OSC MICOM IF MODE REGISTOR AUT MODE REGISTOR COMP Q405 Q403 Q404 SYSTEM CONTROL DETECT SPEED CURRENT DETECT DRIVE PRE OUTPUT BIAS/ OSC WAVEFORM DETECT SOFT SWITCH CONTROL SERVO +B (BATT) SPEED CONTROL SPEED CONTROL SPEED CONTROL SPEED CONTROL POWER (+3.6V) PRE AMP REC PIC OSC BIAS Q10

37、5 +B Q401 PB/REC SWITCH (PWR) +B (PWR) SWITCH Q112 GAIN MOTOR BRAKE SWITCH INITIAL Q603,608 Q601 MOTOR BRAKE Q602 Q109 Q607 Q606 Q604 Q402 TAPE SPEED TAPE SPEED TAPE SPEED TAPE SPEED 9.6cm/s 4.8cm/s 2.4cm/s 1.6cm/s POWER (+3.6V) +1.8V REG COM U V W Signal path. E: PB a: REC TCM-900DV 1010 4-2. BLOCK

38、 DIAGRAMS MAIN SECTION (2/2) S902S903 S904 J102 S701 J801 S801 Q306 Q113 Q114Q115 Q103 Q202 D803 PH701 X301 X701 S702 Q301 L801 D901 SP901 (F/R GEAR) POWER REEL ROTATE DET 4MHz 4MHz (FF/REW) (SPEAKER) DPC AUTOMANUALOFF REC TIME NORMALDOUBLEOFFON REC OSC2 SCK SO CS CD LCD DRIVER COM1-4SEG1-18 DISPLAY

39、 LIQUID CRYSTAL (3.6V) B+ OSC1 LINAOUT XT XT BUSY SK SO SI CS STBY INV OUT IN2 PWR OUT2 IN1 PWR OUT1 + + REF. + - - + POWER OUTA POWER OUTB POWER +INA POWER -INA POWER +INB POWER -INB POWER AMPA POWER AMPB ALC ALC IN REP RST REP CS REP BUSY REC CTL REP ON F/R GEAR SW VOR IN DPC SW JACK DET PHOTO IN

40、TAPE SPEED SW KEY IN SP SW WAKE UP VOR SW LCD/REP DATA OUT REP SI LCD REP SCLK LCD CS PIC ON/OFF X1 X2 RESET REP QUE/REV MUTE CTL DRY BATTERY SIZE AA 2PCS, 3V (IEC DESIGNATION R6) DC IN 3V + RESET LCD901 VOL -111415 32 IC REPEAT A/D TIMING OSC MUC I/FRAM ADPCM ANALIZER SYNTHESIZER D/A AMP Q302-305 R

41、EPEAT, QUE/REV BEEP OSC MUTE Q307 POWER (+3.6V) 75 MUTEATT Q102Q110 AMP 31 POWER AMP FILTER RIPPLE REF VCC FILTER RIPPLE +B(BATT) Q201 PRE AMP, POWER AMP EAR SYSTEM CONTROL POWER (3.6V) KEY MATRIX S905-911 +3.6V REG +3.6V REG DC-DC CONVERTOR +B (BATT) +B +B +B +3.6V POWER (+3.6V) (PIC) (PWR) +B SWIT

42、CH Q801-802 ATT Q501 AMP Q502 LED DRIVE Q503 VOR AMP REC PIC RV301-1 RV301-2 Q702 Q701 RESET Q108 POWER (3.6V) EVR +B (+3.6V) D801 Signal path. E: PB a: REC 1111 TCM-900DV 1 S101 S102 CN101 C102 T101 C101C128 R128 Q401 R125 C104 C108 C111 R118R108 R102 C113 C126C127 R117 R119 R116 R121 R122 R708 R12

43、3 D101 D102 R301R303 C303 C304 C306 C307 C305 C308 X301 C310 R422 C301C302 R420 R318 R304 R107 C116 C110 C118 C122C124 C120 C115 R142 R111 C129 C121R114 R305R306R307 R308 R309R310R311R312 R313 R314 C311 C312 C313 C314 R133 R131 R132 C142 C145 C112 R134 R135 C138 R109 C132 C140 R137 R138R139 R136 R10

44、6 C131 C109 RV301 C136 R141 C134 S701 R717 R714 R315 Q302 C141 R110 R115 C309 R144C137 Q305 Q304 C143 C144 R103C125 C427 R316 C139 C123 R710 R130 C103 R120 Q107 R127 Q303 R317 R126 C114 R104 J102 Q101 Q104 Q103 Q106 Q105 Q112 Q114 Q115 Q113 Q102 Q307 R101 J101 C105 Q402 Q306 Q301 Q111 C133 C130 R124

45、 R143 R140 C135 R105 C107 Q108 Q110 R302 C117 R112 C119 R113 Q109 0.01 2200p4700p 3.3k HN1K02FU 47 47 4V 0.047 0.22 3304.7k 2.2k 0.01 47 4V 47 4V 330 10k 22k 10k 470k 470k 100k MA8056 MA8056 100k220k 47p 1 6.3V 10 6.3V 10 6.3V 0.1 0.1 4MHz 10 6.3V 680k 0.10.1 100k 220k 680k 1k 3300p 1000p 10 6.3V 47

46、 4V 47 4V 0.033 22 4V 2.2k 10k 1 10 6.3V 680k 470k4.7k4.7k 470k 470k4.7k4.7k470k 1M 100 1000p 1000p 0.22 0.22 680k 100 100 0.1 1000p 0.22 330k 100 10 6.3V 15k 1 1 100k 100k100k 100k 100k 1 0.22 50k 470p 22k 0.1 680k 680k 680k XP4501 0.1 330k 47k 0.1 680k1 2SK1830 2SK1830 1 6.3V 1 10k0.1 1 680k 1 6.3

47、V 1 100k 100k 2200p 3.3k 2SK1830 100 XP4501 100k 47 1 3.3k 2SD596 SWITCH 2SK1830 ATT 2SK1830 SWITCH 2SK2009 BIAS SWITCH 2SD596 BIAS OSC 2SK1830 GAIN SWITCH 2SK1830 SWITCH 2SK1830 SWITCH 2SK1830 SWITCH 2SK1830 MUTE 2SK1830 MUTE 3.3k 0.1 UN9110 UN9110 SWITCH 2SK1830 SWITCH 2SK1830 SWITCH 1 0.1 220k 47k 22k 470p 1k 0.15 UN9110 2SK1830 ATT 470k 0.14