Sony TCM-400DV Bedienungsanleitung

SERVICE MANUAL

CASSETTE-CORDER

E Model

Chinese Model

Tourist Model

Model Name Using Similar Mechanism New

Tape Transport Mechanism Type MT-400-175

SPECIFICATIONS

TCM-400DV

Ver 1.0 2001.10

9-873-336-01

2001J0200-1

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 kΩor

lower impedance microphone

Output Earphone jack (minijack) for 8 -300

Ωearphone

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 1/2x 4 5/8x 1 7/16 in.)

Mass Approx. 160 g (5.7 oz.) (main unit

only)

Design and specifications are subject to change without notice.

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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

Flatmic

SPEED CONTROL

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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)

Claw

Claws

Strap, hand

Claws

Screws (B1.7X9)

Cabinet (front)

Cabinet (rear)

Flexible board (CN901

)

Cassette holdr ASSY LED board

Belt (cap), belt (pulley), M901 (capstan/reel motor), HRP901 (REC/PB head),

HE901 (erase head)

Set Cabinet(rear) MAIN Board,Mechanism Deck

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2-3. MAIN BOARD, MECHANISM DECK

Cabinet (front)

Mechanism dec

Main board

Screws (M1.4)

Screws (IB lock)

Remove solder

(four places)

Remove solder

(two places)

Lever (pause)

Knob (pause)

Note:

To install, position the Knob

(pause) and the lever (pause)

respectively.

2-2. LED BOARD

Cassette holder Assy

Screw(1.7)

LED board

Flexible board

Screws(1.7)

Freame

(cassette holder)

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SECTION 3

MECHANICAL ADJUSTMENTS

Tape Tension Measurement

1. Clean the following parts with a denatured-alcohol-moistened

swab:

record/playback head pinch roller

erase head rubber 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.

Mode Torque Meter Meter Reading

1.97 – 3.92mN•m

FWD (20 – 40 g•cm)

CQ-102C (0.28 – 0.55 oz•inch)

0.05 – 0.49 mN•m

Forward Back (0.5– 5 g•cm)

Tension (0.007 – 0.069 oz•inch)

FF, REW CQ-201B more than 4.91 mN•m

(more than 50 g•cm)

(more than 0.69 oz•inch)

Mode Tension Meter Meter Reading

FWD CQ-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)

Belt (CAP)

Belt (pulley)

Screws (M1.4)

M901

(Capstan/reel

motor)

Fly ASSY,

capstan

Washer

(stopper N)

Screws

HE901

(Erase head)

Screw

Torque Measurement

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SECTION 4

ELECTRICAL ADJUSTMENTS

Tape Speed Adjustment

Mode: playback

Procedure:

1. Set [REC˚TIME]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 [REC˚TIME]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

TestTape

0 dB=0.775 V

Type Signal Used for

WS-48A 3 kHz, 0 dB tape speed adjustment

frequency

counter

test tape

WS-48A

(3 kHz, 0 dB) 32 Ω

EAR jack (J101)

set +

–

RV602

Tape Speed Adjustment

(Double Speed)

RV601

Tape Speed Adjustment

(Normal Speed)

Adjustment Location:

– MAIN BOARD (Conductor Side) –

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5-1. BLOCK DIAGRAMS

SECTION 5

DIAGRAMS

S101 (1/6)

REC

S101(3/6)

REC

S101 (2/6)

REC

Q501

RV101

wVOL

S101(5/6)

REC

PB S101(4/6)

REC

B+ 3V

VOLTAGE DET

IC301

MIC901

FLAT MIC

J102

MIC

(PLUGIN POWER)

15 14

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

J101

EAR

SP901

SPEAKER

HRP901

RECORD/PLAYBACK

HEAD

HE901

ERASE HEAD

S902 (2/2)

REC TIME

DOUBLE

NORMAL

VOR CONTROL

IC501 4

16 17

SERVO

CONTROL

IC601

D501

S901

V·O·R

OFF

15 IN+

VREF

UOUT

VOUT

WOUT

S/S

VSP

OSC

COM

OUT

M901

CAPSTAN/REEL

MOTOR

BATT B+

Q601

INVERTER

S101(6/6)

REC

S902 (1/2)

REC TIME

DOUBLE

NORMAL

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

2PCS, 3V

DC IN 3V

J103

S102

POWER

S601

PAUSE.

OFF

PAUSE

REC

BATT

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

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D101 B-8

D501 D-7

IC101 C-7

IC301 F-6

IC501 E-7

IC601 F-8

Q101 C-8

Q102 D-8

Q103 C-8

Q104 D-8

Q301 E-7

Q302 F-6

Q303 F-7

Q304 F-7

Q305 E-6

Q501 D-7

Q601 F-8

Q602 F-7

Q603 F-7

Q604 F-8

Q605 F-7

5-2. PRINTEDWIRING 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: Partsonthe pattern facesideseen

(Side B) fromthepattern 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)

1-682-639-

(11)

1-682-639-

DC IN 3V

BCE

ECB

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

10 11

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

REC

S601

PAUSE.

OFF

PAUSE

-1

-2

-3

-6

-5

-4

S102

POWER

LED

BOARD

CN902

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

2PCS, 3V

J103

M901

CAPSTAN/REEL

MOTOR

EAR

MIC

(PLUGIN POWER)

RV101

wVOL

CN901

23 4 5 6 7 89

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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 R504 R505

R503

C502

C503

C504

C505

R506

C506

R303

R305

R304

Q302

Q304

C301

R301

C302 R306

R307

R309

C303

R311

Q305

R312

C304

C305

R315

R314

R601

C601

C602 C604

R604

R603

R602

C605

C606

C609

R606

R605

C608

R615

RV602

THP601

R612

R611

C610

R607

Q603

Q602

Q605

R622

R621

Q604

C611

R623

R131

R132 C135

S101(3/6)

R128 R129 C129 C130

Q103

C136

C132 C133 C134 R130

S101(4/6)

S601

S101(5/6)

R153

R152

J101

R151

J103

S102

C154

C155

C153

C127

C126

C125

R126

R125

C128

R124

C124

R123

R122

C123

C122

C121

R121

C110

R115

C112

R116

R113

D101

CN901

CN902

R127

IC601

C607

R614

CN101

IC101

RV101

R308

R313

L301

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-211YT

0.1 0.22

0.047

47k

4.7k

1000p

2.2k

4.7

10V

4.7

10V

1000p

2.2k

4.7k

2.2

10k

22k

2SC4213

3.3k

3.3k 10

6.3V

4.7k

NJM2072M

10V 1k 100k

0.1

1000p

4.7k

0.22

330

1.5k

22k

UN5114

UN5214

1.5k

0.01 15k

68k

470

UN5214

22k

6.3V

0.1

150k

220k

2.2k

0.047

0.047 10

10V

0.047

2.2

100k

10k

0.047

470

2.2k

3.3K

6.8k

0.47

2SA1745

UN5114

100

UN5214

6.3V

10k

4.7k 10

10V

10k 4.7k 1000p 1000p

2SC4213

0.01

6.3V

6.3V 47k

1000p

220

10V

0.01

2.2

2.2k

10V

4.7

0.1

2.2k

680

0.22

0.47

220

4700p

33k

0.01

6.8k

10k

MA111-TX

22P

2.2M

LB1979V

0.22

33k

NJM2775A-TE2

10k

330

UN5117

MM1251M

4.7k

UN5214

UN5114

2.2

6.3V 10

10V

UN5114

MA111-TX

2SD1819A

UN5215

10k

EAR

AMP

VCC

HRP901

HE901

OFF

(A)

(D)

(F)

(E)

(C)

(B)

REC

BATT

DC IN 3V

(POWER)

PRE/POWER

VOL

DOUBLE

NORMAL

DOUBLE

NORMAL

S902

FLAT MIC

PB REC

PB REC PB REC

DRY BATTERY

SIZE"AA"

2PCS,3V

(IEC DESIGNATION R6)

MIC AMP

MIC

(PLUG IN POWER)

ON/OFF

REC LED

ON/OFF

LED

DRIVE

LED

DRIVE

BATT LED

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

OFF PAUSE

SWITCH

REC B+

MUTE

DRIVE

HEAD

RECORD/

PLAYBACK

HEAD

ERASE

CONTROL

SPEED

REC

TIME

SPEAKER

PAUSE

MUTE

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10 10

5-4. PRINTEDWIRING BOARD - LED BOARD -

• See page 12 for Circuit Boards Location.

LED BOARD

(11)

1-682-640-

MIC901

FLAT

MIC

S901

V·O·R RV603

SPEED CONTROL

S902

REC TIME

SP901

SPEAKER

OFF

DOUBLE

NORMAL

REC BATT E

CN902

D902

D901

D903

MAIN BOARD

CN901

122

23 4

IC301 MM1251BFBE

5-5. IC BLOCK DIAGRAMS

IC501 NJM2072M (TE2)

IC601 LB1979VS-TLM

235

4678910

181920

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

OUT

VSP

IN+

VREF

S/S

COM

OSC

VCC

U OUT

V OUT

W OUT

P-GND

GND

BOOSTER

CIRCUIT

GND

OUT

VCC

HYS

21 3 4

678 5

–

GND

AMP OUT

GAIN CONT

INPUT VCC

OUTPUT2

OUTPUT1

RECOVERY

TIME CAP

Note on schematic diagrams

• All capacitors are in µF unless otherwisenoted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W 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

• Voltagesaretakenwith a VOM(Input impedance 10MΩ).

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: Partsonthe pattern facesideseen

(Side B) fromthepattern 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

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