索尼SONY TCM-50DV电路图.pdf

《索尼SONY TCM-50DV电路图.pdf》由会员分享，可在线阅读，更多相关《索尼SONY TCM-50DV电路图.pdf（28页珍藏版）》请在收音机爱好者资料库上搜索。

1、 1 Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMT-50-30 SERVICE MANUALUS Model Canadian Model AEP Model E Model Tourist Model TCM-50DV CASSETTE-CORDER Recording system 2-track 1 channel monaural Tape speed 4.8 cm/s or 2.4 cm/s Frequency range 250 - 6,300 Hz using normal (TYPE

2、I) cassette (with REC TIME switch at “NORMAL”) Speaker Approx. 3.6 cm (1 7/16 in.) dia. Power output 250 mW (at 10% harmonic distortion) Input Microphone input jack (minijack) sensitivity 0.2 mV for 3 kilohms or lower impedance microphone Output Earphone jack (minijack) for 8 - 300 ohms earphone Var

3、iable range of the tape speed From approx. +25% to 15% (with REC TIME switch at “NORMAL”) Power requirements 3 V DC batteries AA (R6) 2/External DC 3 V power sources Battery life (Approx. hours)(EIAJ*) Sony alkaline LR6 (SG)Sony R6P (SR) Playback9.51.5 Recording10.52 * Measured value by the standard

4、 of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series cassette tape) SPECIFICATIONS Dimensions (w/h/d) (inci. projecting parts and controls) Approx. 88.7 115.3 37.2 mm (3 1/2 4 5/8 1 1/2 in.) Mass Approx. 250 g (8.9 oz.) Supplied accessories Size AA (R6) batteries (2) (Touri

5、st model only) Earphone (1) (Tourist model only) Design and specifications are subject to change without notice. MICROFILM Ver 1.1 2000. 08 With SUPPLEMENT-1 (9-926-919-81) ? ? ? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C

6、 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 a

7、 tantalum capacitor may be dam- aged by heat. 1. SERVICING NOTE .3 2. GENERAL Operating the Unit .4 3. DISASSEMBLY 3-1. Cabinet, Cassette Lid Assy . 6 3-2. MAIN Board, Cassette Machanism .7 3-3. Belt . 8 3-4. Head . 8 3-5. Motor, DC .9 3-6. Note for Installation of Main Board.9 4. MECHANICAL ADJUSTM

8、ENTS.10 5. ELECTRICAL ADJUSTMENTS .10 6. DIAGRAMS 6-1. Block Diagram . 11 6-2. Printed Wiring Board Main Section. 13 6-3. Schematic Diagram Main Section. 15 6-4. Printed Wiring Board Panel Section . 17 6-5. Schematic Diagram Panel Section .18 6-6. IC Pin Description. 20 7. EXPLODED VIEWS 7-1. Case S

9、ection. 21 7-2. Panel Section. 22 7-3. Mechanism Deck Section-1 . 23 7-4. Mechanism Deck Section-2 . 24 8. ELECTRICAL PARTS LIST .25 ? ? ? ? ? ? ? ? ? ? 3 TP30 TP30 TP20 TP20 S101 PB REC S103 (POWER) SECTION 1 SERVICING NOTE 1-1. SERVICE MODE Mode to allow the mechanical parts to operate with the ma

10、in board open. This set uses the photo reflector PH701 to detect the rotation of the idler gear. PH701 is on the main board and so removal of the main board does not allow the set to detect the rotation of the idler gear. This makes motor control impossible which prevents normal operation. When repa

11、iring the set as energized with the main board removed, proceed as follows: 1. Setting 1) Remove the cabinet (rear) (refer to the Disassembly) and open the main board. 2) Apply a trapezoidal of 10 to 100 Hz (at 1.3 V) from oscillator to TP20. (Connect the ground to TP30.) 3) Supply DC 3.0 V to the p

12、ositive and negative terminals of the battery with a stabilized power supply. 2. FF mode 1) Apply a trapezoidal to hall sensor TP20. 2) Press the FF key. 3) Turn on the S103 (POWER) switch. 3. REW mode 1) Apply a trapezoidal to hall sensor TP20. 2) Press the REW key. 3) Turn on the S103 (POWER) swit

13、ch. 4. PLAY mode 1) Apply a trapezoidal to hall sensor TP20. 2) Press the PLAY key. 3) Change over the S101 (REC/PB) switch to PB side. 4) Turn on the S103 (POWER) switch. 5. REC mode 1) Apply a trapezoidal to hall sensor TP20. 2) Press the REC key. 3) Change over the S101 (REC/PB) switch to REC sid

14、e. 4) Turn on the S103 (POWER) switch. main board (conductor side) main board (component side) ? ? ? ? ? ? ? ? ? ? 4 SECTION 2 GENERALThis section is extracted from instruction manual. ? ? ? ? ? ? ? ? ? ? 5 ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 DISASSEMBLY The equipment can be removed using the following

15、procedure. Note : Follow the disassembly procedure in the numerical order given. 3-1. CABINET (REAR), CASSETTE LID ASSY 1 two screws (screw (B1.7x9), tapping) 2 two screws (screw (B1.7x9), tapping) 3 two claws 4 cabinet (rear) 5 LED flexible board 6 shaft (A), stopper 7 screw, ornamental 8 screw, or

16、namental 9 cassette lid assy Cabinet (rear), Cassette Lid Assy Mechanism Deck, Main board Belts Head Motor, DC ? ? ? ? ? ? ? ? ? ? 7 3-2. MACHANISM DECK, MAIN BOARD 2 mechanism deck, MAIN board 1 three screws (screw (IB lock) 3 Remove the four solders. 4 head flexible board 5 two screws (screw (M1.4

17、), toothed lock) 6 MAIN board ? ? ? ? ? ? ? ? ? ? 8 3-3. BELTS 3-4. HEAD 1 belt (motor) 2 belt (flywheel) 3 belt (counter) belt (motor) belt (flywheel) belt (counter) How to apply the belts 1 two screws 2 head, magnetic (REC/PB/ERASE) ? ? ? ? ? ? ? ? ? ? 9 3-6. NOTE FOR INSTALLATION OF MAIN BOARD Al

18、ign the knobs of S101, S103 and S701 on the main board with the claws of the lever (REC) lever (erase proof 2) and lever (REC) of the mechanism deck respectively, and install the main board. 3-5. MOTOR, DC 3 Remove the four solders. 1 screw (1.4) 2 screw (1.4) 4 Motor, DC MAIN board S103 S101 S701 s

19、crews (M1.4), toothed lock mechanism deck lever (PAUSE) lever (REC) lever (erase proof 2) ? ? ? ? ? ? ? ? ? ? 10 test tape WS-48A (3 kHz, 0 dB) set 8 EAR jack digital frequency counter PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase headpinch ro

20、ller capstanrubber belt 2.Demagnetize the record/playback/erase 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 adjustments, apply suitable locking compound to the parts adjusted. 5.Th

21、e adjustments should be performed with the rated power supply voltage (1.3 V) unless otherwise noted. Torque Measurement ModeTorque MeterMeter Reading 15 25 g cm FWD CQ-102C (0.21 0.35 oz inch) FWDless than 2 g cm back tension(less than 0.03 oz inch) 15 25 g cm REV CQ-102RC (0.21 0.35 oz inch) REVle

22、ss than 2 g cm back tension(less than 0.03 oz inch) more than 50 g cm FF, REWCQ-201B (more than 0.69 oz inch) SECTION 4 MECHANICAL ADJUSTMENTS 1.REC TIME : NORMAL/FWD Playback WS-48A (tape center part) and adjust RV601 so that reading on the digital frequency counter becomes 3,000 Hz. 2.REC TIME : D

23、OUBLE/FWD Playback WS-48A (tape center part) and adjust RV602 so that reading on the digital frequency counter becomes 1,500 Hz. Specification Value : Digital Frequency Counter Reading REC TIME : NORMALREC TIME : DOUBLE 2,985 to 3,015 Hz1,485 to 1,515 Hz 3.REC TIME : NORMAL/REV Playback WS-48A (tape

24、 center part) and confirm that the reading on digital frequency counter are between 2,985 to 3,015 Hz. 4.REC TIME : DOUBLE/REV Playback WS-48A (tape center part) and confirm that the reading on digital frequency counter are between 1,435 to 1,515 Hz. Adjustment Location : Tape Speed Adjustment Proce

25、dure : SECTION 5 ELECTRICAL ADJUSTMENTS PRECAUTION Supplied voltage : DC 3.0 V Switch and control position VOL control: max (10) MIC SENS switch: free (L or H) VOR switch: free (OFF or ON) SPEED CONTROL control : mechanical center Test Tape TypeSignalUsed for WS-48A3 kHz, 0 dBtape speed adjustment R

26、V602 RV601 main board (conductor side) ? ? ? ? ? ? ? ? ? ? 11 12 TCM-50DV 6-1. BLOCK DIAGRAM SECTION 6 DIAGRAMS SP101 SPEAKER VOL RV101 DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS,3V PULSE AMP Q708 SWITCH Q706, 707 DP CON OSC Q702 4 +3V +3V TAPE ROTATION DETECTOR PH701 10 5 8 6 2322 32 REC/PB (FWD

27、) HRPE901 REC/PB/ERASE HEAD REC/PB (REV) BIAS OSC Q112 ERASE (FWD) ERASE (REV) 1 7 6 5 SWITCH Q501 OUT1 RECOVERY TIME CAP OUT2 IN NF LEVEL SWITCH Q103 NF LEVEL SWITCH Q104 VOR IC501 NF LEVEL SWITCH Q105 MIC SENS S902 HL 5 1 28 12 7 11 911 27 29 3 Signal path : TAPE (PB) : TAPE (REC) MIC IN ALC CONT

28、PRE NF EQ IN VREF OUT REC OUT AMP Q102 2 PRE OUT REC IN POW IN POW OUT1 POW OUT2 1 2 LED CONTROL Q704 MUTE Q109 LED CONTROL Q302,303 MUTE DRIVE Q110 SWITCH Q107,108 R.F 4 21 26 25 OUT LED CONTROL Q301 D903 BATTERY VOLTAGE DETECTOR IC301 21 23 R/P MUTE R/P SW MIC VCC R.F OUT S101-2 (REC/PB) PB REC PB

29、 REC S101-1 (REC/PB) D901 BATT D902 REC J102 MIC +3V 3 V OUTV IN REG IC701 24 D701 MOTOR CONTROL Q705 DIRECTION MOTOR BRAKE SW Q601 - 604 19 M901 CAPSTAN/REEL MOTOR W OUT V OUT U OUT 11 2 1 20 1312 BIAS REF VOLTAGE PULSE DET OPERATION LOGIC PRE DRIVER CURRENT DET FREQ. CHARC. REF VOLTAGE FOR SPEED C

30、ONTROL DIR S/S IN + OSC S101-4 (REC/PB) PB REC RV601 TAPE SPEED REC TIME NORMAL RV602 TAPE SPEED REC TIME DOUBLE REC TIME S903-2 DOUBLE NORMAL REC TIME S903-1 NORMAL DOUBLE ON OFF FWD REV SWITCH Q703 IN4 IN6 IN8 SYSTEM CONTROL IC702 20 17 OUT2 OUT1 OUT5 IN7 CONT CL VCC VDD IN1 1819 OUT3 OUT4 MOTOR S

31、ERVO IC601 S102-4 (FWD/REV) FWD REV PB REC S101-3 (REC/PB) J101 EAR +3V +3V S103 (POWER) -+ + DC IN 3V CN101 PRE / POWER AMP IC101 T701 VREF SPEED CONTROL RV603 D702 Q701 OFF ON S701 PAUSE +3V 4 T101 Q111 Q101 +3V S102-3 (FWD/REV) Q106 MIC901 Flat Mic V O R S901 - + + - + - S702 (REW / REVIEW) S703

32、(DIR) S704 (FF / CUE) IN2 IN3 IN5 S102-2 (FWD /REV) REV FWD 14 ERROR AMP 04 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1-672-148- (11) 11 S702 (REW/REVIEW) 04 (FF/CUE) SPEED CONTROL S703 (DIR) S701 ON OFF S101 (REC/PB) PB REC REC/PB ERASE REC/PB ERASE ( ) ( ) ( ) (

33、 ) S102 (FWD/REV) REV FWD DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS,3V HRPE901 REC/PB/ERASE HEAD 1-672-148- (11) 11 TP20 TP30 1 A B C D E F G H I J 234567891011121314 13 14 TCM-50DV Q103D-9 Q104D-9 Q105E-10 Q106H-2 Q107F-8 Q108F-8 Q109F-9 Q110F-8 Q111F-1 Q112G-3 Q301F-10 Q302F-10 Q303F-10 D701C-

34、1 D702D-2 IC101F-9 IC301F-10 IC501E-2 IC601C-8 IC701C-1 IC702C-2 PH701D-1 Q101H-10 Q102D-9 Semiconductor Location Ref. No.LocationRef. No.LocationRef. No.Location Q501E-2 Q601B-10 Q602B-10 Q603B-9 Q604B-9 Q701D-2 Q702D-1 Q703D-2 Q704D-9 Q705C-2 Q706B-2 Q707B-2 Q708D-1 6-2. PRINTED WIRING BOARD MAIN

35、SECTION Note on Printed Wiring Boards: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables seeing. (Page 17) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? TCM-50DV 15 16 6-3. SCHEMATIC DIAGRAM MAIN SECTION Refer to page

36、 19 for IC Block Diagrams. Note on Schematic Diagram: All resistors are in and 1/4 W or less unless otherwise specified. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack. Voltage is dc with

37、respect to ground under no-signal (detuned) condition. no mark : PB () : REC : FF/REW 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 a: REC (Page 18) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

38、 ? ? ? ? ? ? ? ? ? ? ? ? 04 S903 DOUBLE NORMAL S902 H L 1 18 S901 ON OFF 1-672-149- (11) 11 1-672-149- LED FLEXIBLE BOARD 1 (11) 11 1 A B C D E F G H I J 23456 17 18 TCM-50DV Note on Schematic Diagram: All resistors are in and 1/4 W or less unless otherwise specified. C : panel designation. Signal p

39、ath. E: PB Note on Printed Wiring Boards: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables seeing. 6-5. SCHEMATIC DIAGRAM PANEL SECTION 6-4. PRINTED WIRING BOARD PANEL SECTION (Page 14) (Page 15) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 19 1 13 2 14 3 15 4 165 17 6 18 7 19 8 20 9 10 11 12 PRE DRIVER DIRECTION ANT