索尼SONY TCM-50DV电路图.pdf
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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
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