索尼SONY TCM-900DV电路图.pdf

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1、Ver 1.0 2001.02 TCM-900DV SERVICE MANUAL CASSETTE-CORDER SPECIFICATIONS US Model Canadian Model AEP Model Tourist Model 9-873-082-11 2001B0200-1 2001.2 Sony Corporation Audio Entertainment Group General Engineering Dept. Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMT-900-175 R

2、ecording 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 jack (minijack) s

3、ensitivity 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 range of pitch c

4、ontrol 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 accessories Headphone

5、s 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. ? ? ? ? ? ? ? ? ? ? 2 TCM-900DV Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C during repairing.

6、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 a tantalum capacitor

7、 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 2-4. Belt (AR), M601 (

8、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 Section (1/3) -.11

9、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 Boards -SW Section

10、(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). 25 6.ELECTRICAL PARTS

11、 LIST .26 Location of parts and controls ? ? ? ? ? ? ? ? ? ? 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 board Belt (AR), M601 (Caps

12、tan/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 the holes on the cassette

13、 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) Cassette lid ASSY SW f

14、lexible board Note on installing the SW flexible board Insert the SW flexible board as shown in the figure. ? ? ? ? ? ? ? ? ? ? 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 soldering four lead wires (f

15、rom 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) 4Pulley (r

16、everse) 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) Lead wire

17、s ( 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,

18、 0dB tape speed 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 fre

19、guency counter 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

20、 swab : record/playback/erase head pinch 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

21、locking compound 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) Forwa

22、rdCQ-102C 0.05 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 IC4

23、01 R409 C420 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

24、) TP47 RV601 RV401 DPC (MANUAL) Adjustment 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

25、 “ B “. 1. Set DPC switch (S904) 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

26、. Turn SPEED CONTROL knob (RV901) 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 become

27、s 1505Hz. 7. Turn SPEED CONTROL knob (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 (

28、4.8cm/s) and turn SPEED CONTROL knob (RV901) fully to SLOW. 11.Confirm the reading on the frequency counter becomes approx. 1505Hz. ? ? ? ? ? ? ? ? ? ? TCM-900DV 8 z Waveforms 2 3 4 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 :

29、 1 sec REC/PB mode VOLT/DIV : 1 V AC TIME/DIV : 10 sec 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

30、 except for electrolytics and tantalums. All resistors 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 p

31、our la scurit. tical for safety. Ne les remplacer que 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 t

32、o ground under no-signal conditions. no mark : PLAY (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

33、produc- tion tolerances. Signal path. E: PB a: REC 3.8 Vp-p 0.25 sec 1 IC701 wh REC/PB mode VOLT/DIV : 1 V AC TIME/DIV : 0.2 sec SECTION 4 DIAGRAMS 5 T101 wh REC mode VOLT/DIV : 1 V AC TIME/DIV : 0.2 sec 30 Vp-p 20.0 sec ? ? ? ? ? ? ? ? ? ? 99 TCM-900DV 4-1. BLOCK DIAGRAMS MAIN SECTION (1/2) MIC901

34、S901 J101 RV401 T101 X401 Q111 Q101 RV601 RV602 RV603 RV604 M601 RV901 DPC 768kHz 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

35、FIN CP OUT CP IN CP REF XTLO XTLI RESETN LPF1ILPF1O MOD0 MOD1 MOD2 MOD3 FXIN OSC1O 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

36、Q106 +1.8V REG S101-1 DIGITAL PITCH CONTROL D/AA/DLPFLPF DATA RAMDSP KEY SHIFT 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

37、 CONTROL SPEED CONTROL SPEED CONTROL POWER (+3.6V) PRE AMP REC PIC OSC BIAS Q105 +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

38、(+3.6V) +1.8V REG COM U V W Signal path. E: PB a: REC ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? TCM-900DV 1010 4-2. BLOCK 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

39、 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 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 POW

40、ER +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 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 S

41、IZE 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 REPEAT, 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,

42、 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 SWITCH 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 5 S101