sony_tcm-400dv.pdf
《sony_tcm-400dv.pdf》由会员分享,可在线阅读,更多相关《sony_tcm-400dv.pdf(18页珍藏版)》请在收音机爱好者资料库上搜索。
1、SERVICE MANUAL CASSETTE-CORDER E Model Chinese Model Tourist Model Model Name Using Similar MechanismNew Tape Transport Mechanism TypeMT-400-175 SPECIFICATIONS TCM-400DV Ver 1.0 2001.10 9-873-336-01 2001J0200-1 2001. 10 Sony Corporation Personal Audio Company Published by Sony Engineering Corporatio
2、n 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 nomal (TYPE 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 (minij
3、ack) sensitivity 0.2 mV for 3 k or lower impedance microphone Output Earphone jack (minijack) for 8 -300 earphone Variable range of the tape speed From approx. +30% to 15% (with REC TIME switch at “NORMAL”) Power requirements 3 V DC batteries R6 (AA) x 2/ External DC 3 V power sources Dimensions (w/
4、h/d) (incl. projecting parts and controls) Approx. 86.7 x 114.4 x 35.4 mm (3 1 /2 x 4 5 /8 x 1 7 /16 in.) Mass Approx. 160 g (5.7 oz.) (main unit only) Design and specifications are subject to change without notice. TCM-400DV 2 TABLE OF CONTENTS 1.GENERAL.2 2.DISASSEMBLY.3 3.MECHANICAL ADJUSTMENTS.5
5、 4.ELECTRICAL ADJUSTMENTS.6 5.DIAGRAMS 5-1. Block Diagrams.7 5-2. Printed Wiring Board MAIN Board .8 5-3. Schematic Diagram .9 5-4. Printed Wiring Board LED Board . 10 5-5. IC BLOCK DIAGRAMS. 10 6.EXPLODED VIEWS. 11 7.ELECTRICAL PARTS LIST. 15 Flexible Circuit Board Repairing Keep the temperature of
6、 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 reuse a disconnected chip componen
7、t. 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. MIC VOL TAPE COUNTER EAR VOR REC TIME REC DC IN 3V REW/ REVIEW STOP PAUSE REC Flat mic SPEED CONTROL TCM-400DV 3 2-1.CABINET (REAR), CASSETTE HOLDER AS
8、SY Note: Follow the disassembly procedure in the numerical order given. SECTION 2 DISASSEMBLY This set can be disassembled in the order shown below. Cassette holder ASSY Spring (cassette)7 Claw2 Claws2 Strap, hand4 3 6 Claws2 Screws (B1.7X9)1 Screws (B1.7X9)1 Cabinet (front) Cabinet (rear) Flexible
9、board (CN901)5 Cassette holdr ASSYLED board Belt (cap), belt (pulley), M901 (capstan/reel motor), HRP901 (REC/PB head), HE901 (erase head) Set Cabinet(rear) MAIN Board,Mechanism Deck TCM-400DV 4 2-3. MAIN BOARD, MECHANISM DECK Cabinet (front) Mechanism deck Main board4 6 Screws (M1.4)3 Screws (IB lo
10、ck)5 Remove solder (four places) 2 Remove solder (two places) Lever (pause) Knob (pause) Note: To install, position the Knob (pause) and the lever (pause) respectively. 1 2-2. LED BOARD Cassette holder Assy Screw(1.7)3 LED board Flexible board5 Screws(1.7) Freame (cassette holder) 1 2 4 TCM-400DV 5
11、SECTION 3 MECHANICAL ADJUSTMENTS Tape Tension Measurement 1.Clean the following parts with a denatured-alcohol-moistened swab: record/playback headpinch roller erase headrubber belt capstan 2.Demagnetize the record/playback head with a head demagne- tizer. (Do not bring the head demagnetizer close t
12、o 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.The adjustments should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. ModeTorque MeterMeter Reading 1.97 3
13、.92mNm FWD(20 40 gcm) CQ-102C (0.28 0.55 ozinch) 0.05 0.49 mNm Forward Back (0.5 5 gcm) Tension (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) 2-4. BELT (CAP), BELT (PULLEY
14、), M901 (CAPSTAN/REEL MOTOR), HRP901 (REC/PB HEAD), HE901 (ERASE HEAD) HRP901 (REC/PB head) Attaching belt (CAP) and belt (pulley) z Belt (CAP) Belt (CAP) Belt (pulley) Belt (pulley) Screws (M1.4)3 M901 (Capstan/reel motor) 4 1 8 7Fly ASSY, capstan Washer 6Washer 5 0 qs 9 2 Washer (stopper N) Screws
15、 HE901 (Erase head) qaScrew Torque Measurement TCM-400DV 6 SECTION 4 ELECTRICAL ADJUSTMENTS Tape Speed Adjustment Mode: playback Procedure: 1.Set RECTIME switch (S902) to NORMAL (4.8 cm/s) posi- tion, and playback the tape (WS-48A) . 2.Adjust RV601 so that frequency counter reading becomes 3,000 Hz.
16、 Specification values: 2,990 to 3,010 Hz 3.Set RECTIME switch (S902) to DOUBLE (2.4 cm/s) posi- tion. 4.Playback the tape from the beginning for two minutes, then adjust RV602 so that frequency counter reading becomes 1,500 Hz. Specification values: 1,495 to 1,505 Hz Confirm that deflection of the f
17、requency counter reading between the beginning and the end of tape is within 2% (NORMAL: approx. 60 Hz, DOUBLE: approx. 30 Hz) . Setting: Supplied voltage: 2.5 V Switch and control position VOL contorl (RV101): mechanical center PAUSE switch (S601): OFF SPEED CONTROL (RV603): center click VOR switch
18、 (S901): 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) 32 EAR jack (J101) set + RV602 Tape Speed Adjustment (Double Speed) RV601 Tape Speed Adjustment (Normal Speed) Adjustment Location: MAIN BOARD (Conductor Si
19、de) TCM-400DV 77 5-1. BLOCK DIAGRAMS SECTION 5 DIAGRAMS S101 (1/6) REC R PB S101(3/6) PB r REC S101 (2/6) REC R PB Q501 RV101 wVOL S101(5/6) REC R PB S101(4/6) PB r REC B+ 3V B+ 3V 674 VOLTAGE DET IC301 MIC901 FLAT MIC J102 MIC (PLUGIN POWER) 15 14 11 1 16 4 7 PRE/POWER AMP IC101 MIC POWER Q101 PRE
20、DRIVE OUTPUT SOFT SWITCH WAVEFORM DETECT SPEED DETECT BIAS OSC CURRENT DETECT MOTOR BRAKE Q602 MOTOR BRAKE Q603 INITIAL SWITCH Q604,605 LED DRIVE Q305 LED ON/OFF Q304 B+ SWITCH Q302 BATT LED DRIVE Q303 REC LED ON/OFF Q301 ATT ALC ATT LIPPLE FILTER REC B+ SWITCH Q102 MUTE Q103 MUTE DRIVE Q104 3 6 6 5
21、 J101 EAR SP901 SPEAKER HRP901 RECORD/PLAYBACK HEAD HE901 ERASE HEAD S902 (2/2) REC TIME DOUBLE R NORMAL 5 6 1 VOR CONTROL IC501 4 11 13 14 1617 12 5 6 SERVO CONTROL IC601 D501 S901 VOR H R L R OFF 15 IN+ VREF UOUT VOUT WOUT S/S VSP OSC COM OUT M M901 CAPSTAN/REEL MOTOR BATT B+ U V W Q601 INVERTER S
22、101(6/6) REC R PB S902 (1/2) REC TIME DOUBLE R NORMAL DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V DC IN 3V ! J103 S102 POWER S601 PAUSE. OFF r PAUSE REC BATT E D902 D901 D903 REC B+ RV603 SPEED CONTROL RV602 TAPE SPEED 2.4cm RV601 TAPE SPEED 4.8cm REC B+ Signal path. E: PB a: REC TCM-400DV 88
23、D101B-8 D501D-7 IC101C-7 IC301F-6 IC501E-7 IC601F-8 Q101C-8 Q102D-8 Q103C-8 Q104D-8 Q301E-7 Q302F-6 Q303F-7 Q304F-7 Q305E-6 Q501D-7 Q601F-8 Q602F-7 Q603F-7 Q604F-8 Q605F-7 5-2. PRINTED WIRING BOARD MAIN BOARD Ref. No.Location Semiconductor Location Note: X : parts extracted from the component side.
24、a: Through hole. : 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 (Side B)from the pattern face are indicated. Pattern face side:Parts on the parts face side seen (Side A)from the parts face ar
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- sony_tcm 400 dv