sony_tcm-400dv.pdf
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 Corporation 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 (minijack) 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/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 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 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 component. 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 ASSY 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 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 lock)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 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 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.The adjustments should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. ModeTorque MeterMeter Reading 1.97 3.92mNm 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), 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 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. 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 frequency 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 (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 Side) 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 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 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 S101(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 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. 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 are indicated. MAIN BOARD (SIDE B) MAIN BOARD (SIDE A) 11 (11) 1-682-639- 11 (11) 1-682-639- DC IN 3V ! M BCE BCE BCE ECB ECB ECB BCE BCE BCE BCE BCE BCE BCE BCE ECB IC101 IC501 IC301 L301 IC601 R316 R315 R314 R313 R311 R312 R302 R151 R152 R122 R121 R607 C503 C504 C502 C302 C303 S102 C506 C127 C101 C102 C122 C121 C103 C104 C130 R301 R101 C131 C505 C301 C126 C501 C133 Q102 Q602 Q603 Q605 Q604 Q301 Q101 Q501 D501 R153 Q302 Q601 Q305 C305 R308 Q303 Q304 R603 R604 R605 C605 C606 RED BLK ORG WHT C607 C608 R602 C601 C602 C604 R621 R622 C610 R601 R623 R606 R614 R611 C109 C110 C112 R113 R116 C132 C123 R128 R129 R102 R103 R104 R105 R106 R107 R108 C105 C106 C108 C129 R110 R124 R125 R126 R127 R123 C124 C125 R130 R501 R502 R503 R504 R505 R507 R506 R303 R304 R305 R306 R307 R309 RV601 RV602 R115 R615 C609 C107 C113 Q103 C136 C128 Q104 R612 1 5 1011 15 20 1 8 1 8 5 1 4 5 10 15 22 9 16 R120 R109 R119 D101 R131 R132 C135 THP60 C154 C155 C114 TP28 C611 C153 C134 C304 J101 J102 HRP901 RECORD/PLAYBACK HEAD HE901 ERASE HEAD S101 RECTPB S601 PAUSE. OFF r PAUSE -1 -2 -3 -6 -5 -4 S102 POWER A LED BOARD CN902 DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V J103 M901 CAPSTAN/REEL MOTOR EAR MIC (PLUGIN POWER) RV101 wVOL CN901 23456789 A 1 B C D E F G H TCM-400DV 99 5-3. SCHEMATIC DIAGRAM See page 10 for Notes. See page 10 for IC Block Diagrams. D901 D902 D903 S902(1/2) S902(2/2) S101(6/6) C101 C103 C102 R102 R101 C104 R103 R104 R105 C105 C106 C114 R106 R107 R108 C107 R109 R119 Q101 R110 R120 C108 C109 S101(1/6)S101(2/6) R501 IC501 R502 C501 R504R505 R503 C502 C503 C504 C505 R506 C506 R303 R305 R304 Q302 Q304 C301 R301 C302 R306 R307 R309 C303 R311 Q305 R312 C304 C305 R315R314 R601 C601 C602 C604 R604 R603 R602 C605 C606 C609 R606 R605 C608 R615 RV602 THP601R612 R611 C610 R607 Q603 Q602 Q605 R622R621 Q604 C611 R623 R131 R132 C135 S101(3/6) R128 R129 C129C130 Q103 C136 C132 C133 C134 R130 S101(4/6) S601 S101(5/6) R153R152 J101 R151 J103 S102 C154 C155 C153 C127 C126 C125 R126 R125 C128 R124C124 R123 R122 C123 C122C121 R121 C110 R115 C112 R116 R113 D101 CN901CN902 R127 IC601 C607 R614 CN101 IC101 RV101 R308 R313L301 100uH Q303 IC301 RV601 Q601 Q102 S901 V O R . R302 C113 C131 J102 Q104 D501 SP901 Q301 Q501 RV603 R316 MIC901 SML-210LT SML-210LT SML-211YT 0.1 0.22 0.047 47k 4.7k 1000p 1k 2.2k 2.2k 4.7 10V 4.7 10V 1000p 2.2k 4.7k 4.7k 2.2 10k 22k 2SC4213 3.3k 3.3k 10 6.3V 1 4.7k NJM2072M 1k 10 10V 1k100k 68 0.1 0.1 1000p 22 4V 4.7k 0.22 330 1.5k 22k UN5114 UN5214 22 4V 1.5k 0.01 15k 68k 470 1 470 UN5214 22k 10 6.3V 0.1 150k220k 2.2k 0.047 0.047 10 10V 1M 1M 1M 0.047 0.047 2.2 100k 10k 0.047 470 2.2k 3.3K6.8k 1k 0.47 1k 2SA1745 2SA1745 UN5114 100100 UN5214 10 6.3V 10k 10k 4.7k 10 10V 10k 4.7k 1000p1000p 2SC4213 0.01 0.01 47 6.3V 47 6.3V 47k 6822 22 1000p 1000p 220 4V 1 10 10V 0.01 2.2 2.2k 10 10V 4.70.1 2.2k 680 0.22 0.470.47 220 4700p 33k 0.01 6.8k 10k MA111-TX 22P22P 2.2M LB1979V 0.22 33k NJM2775A-TE2 10k 330 68 UN5117 MM1251M 4.7k UN5214 UN5114 22 2.2 6.3V 10 10V UN5114 MA111-TX 2SD1819A UN5215 10k 10k EAR AMP 1 2 3 4 VCC U V W HRP901 HE901 OFF (A)(D) (F) (E) (C) (B) REC BATT DC IN 3V (POWER) PRE/POWER VOL DOUBLE NORMAL DOUBLE NORMAL S902 L H FLAT MIC PB REC PB REC PB REC PB REC PB REC PB REC DRY BATTERY SIZEAA 2PCS,3V (IEC DESIGNATION R6) MIC AMP MIC (PLUG IN POWER) ON/OFF REC LED ON/OFF LED DRIVE LED DRIVE BATT LED +B SWITCH VOR CONTROL VOLTAGE DET MOTOR DRIVE TAPE SPEED 2.4cm TAPE SPEED 4.8cm INVERTER MOTOR BRAKE SWITCH Q602,603 Q604,605 INITIAL MOTOR M901 CAPSTAN/REEL PAUSE OFFPAUSE SWITCH REC B+ MUTE DRIVE HEAD RECORD/ PLAYBACK HEAD ERASE CONTROL SPEED REC TIME SPEAKER PAUSE MUTE TCM-400DV 1010 5-4. PRINTED WIRING BOARD - LED BOARD - See page 12 for Circuit Boards Location. LED BOARD 11 (11) 1-682-640- MIC901 FLAT MIC S901 VOR RV603 SPEED CONTROL S902 REC TIME SP901 SPEAKER H R L R OFF DOUBLE R NORMAL RECBATTE CN902 D902 D901 D903 A MAIN BOARD CN901 122 234 A 1 B C IC301 MM1251BFBE 5-5. IC BLOCK DIAGRAMS IC501 NJM2072M (TE2) IC601 LB1979VS-TLM 23546789 10 1 11121314151617181920 SOFT SW MIX CURRENT/MOTIVE LOGIC WAVEFORM DETECT PRE DRIVER OUTPUT CURRENT DETECT SPEED DETECT REFERENCE VOLTAGE FOR SPEED CONTROL POWER SUPPLY BIAS REFERENCE VOLTAGE OSCILLATOR CIRCUIT MOTIVE POWER DETECT + FC GND FC RI OUT VSP IN+ VREF S/S COM OSC WB VCC NC U OUT V OUT W OUT P-GND VB UB GND BOOSTER CIRCUIT NC CT GND OUT NC VCC VS HYS 2134 6785 + + 1 2 3 4 8 7 6 5 GND AMP OUT GAIN CONT INPUTVCC OUTPUT2 OUTPUT1 RECOVERY TIME CAP Note on schematic diagrams All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. A : B+ Line. H : adjustment for repair. Power voltage is dc 3V and fed with regulated dc power supply frombattery terminal . Voltages are dc with respect to ground under no-signal conditions. no mark: PLAY ( ) : REC Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Note: X : parts extracted from the component side. 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 are indicated. Signal path. E: PB a: REC 11 TCM-400DV SECTION 6 EXPLODED VIEWS 6-1. CABINET SECTION NOTE: -XX, -X mean standardized parts, so they may have some difference from the original one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark The mechanical parts with no reference number in the exploded views are not supplied. Hardware (# mark) list and accessories are given in the last of this parts list. Abbreviation JEW : Tourist CH : Chinese 1E : No Indication of country of origin E:Indication of country of origin 9 8 7 10 11 12 13 14 15 16 17 18 19 20 MT-400-175 not supplied not supplied 21 6 5 4 3 2 1 2 13-234-567-11CABINET (REAR) (CH,E) 13-234-567-21CABINET (REAR) (JEW) 13-234-567-31CABINET (REAR) (1E) 23-318-203-92SCREW (B1.7X9), TAPPING 33-225-577-02LID, BATTERY CASE 43-914-930-11CUSHION (BATTERY CASE LID) 53-229-228-01SHEET (BATTERY PICK) 63-237-440-01SHEET,SHIELD 73-226-525-01TERMINAL (+) 83-345-648-01SCREW (M1.4), TOOTHED LOCK *9A-3021-597-A MAIN PC BOARD ASSY 103-226-526-01TERMINAL (-) 113-234-569-01BUTTON (CUE) 123-234-570-01BUTTON (REVIEW) 133-234-568-01BUTTON (PLAY) 143-235-589-01BUTTON (STOP) 153-235-588-01BUTTON (REC) 163-234-856-01LEVER (PAUSE) 173-234-561-01KNOB (PAUSE) 183-234-566-11CABINET (FRONT) 193-704-197-42SCREW (IB LOCK) 203-925-231-01REFLECTOR 213-328-319-01STRAP, HAND 12 TCM-400DV 6-2. CASSETTE HOLDER SECTION Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark 60 59 54 55 57 56 56 53 52 51 SP901 MIC901 58 68 67 66 65 64 63 62 61 513-229-210-01SPRING (CASSETTE) 523-034-792-01SCREW, TAPPING (B2.0) 534-017-441-01CUSHION (B) 541-683-215-11FLEXIBLE BOARD *551-682-640-11LED BOARD 563-318-382-04SCREW (1.7), TAPPING 573-234-5
