Sony TCM-450DV Bedienungsanleitung

TCM-450DV

US Model

Canadian Model

AEP Model

E Model

Chinese Model

Tourist Model

SERVICE MANUAL

CASSETTE-CORDER

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

9-877-551-02

2004E02-1

SPECIFICATIONS

Ver 1.1 2004. 05

Model Name Using Similar Mechanism New

Tape transport Mechanism Type MT-450-175

Recording system

2-track 1 channel monaural

Speaker

Approx. 3.6 cm (1 7⁄16 in.) dia.

Tape speed

4.8 cm/s (1 7⁄8ips) or 2.4 cm/s (15⁄16 ips)

Variable range of the tape speed

From approx. +30% to –20% (with REC TIME/PLAY MODE

switch at “NORMAL”)

Frequency range

250 - 6,300 Hz using nomal (TYPE I) cassette

(with REC TIME/PLAY MODE switch at “NORMAL”)

Input

Microphoneinputjack(minijack/ monaural/PLUGIN POWER)

sensitivity 0.2 mV for 3 kΩor lower impedance microphone

Output

Earphone jack (minijack/ monaural) for 8 - 300 Ωearphone

Power output (at 10 % harmonic distortion)

450 mW

Power requirements

3 V DC, batteries R03 (AAA) x 2/

External DC 3 V power sources

Dimensions (w/h/d) (incl. projecting parts and controls)

Approx. 86.3 x 113.4 x 28.9 mm

(3 1⁄2x 4 1⁄2x 1 3⁄16 in.)

Mass (main unit only)

Approx. 173 g (6.2 oz.)

Supplied accessory

Carrying pouch (1)

Design and specifications are subject to change without notice.

TCM-450DV

TABLE OF CONTENTS

1. GENERAL ................................................................... 2

2. DISASSEMBLY.......................................................... 3

2-1. Cabinet (Rear) ......................................................... 3

2-2. Main Board ............................................................. 4

2-3. Mechanism Deck (MT-450-175)............................. 4

2-4. Belt (Counter), Belt (Cap)S,

M901 (Capstan/Reel Motor), HRP901

(REC/PB Head), HE901 (ERASE HEAD) ............. 5

2-5. Cassette Lid Assy, Led Board ................................. 5

3. MECHANICAL ADJUSTMENTS ....................... 6

4. ELECTRICAL ADJUSTMENTS ......................... 6

5. DIAGRAMS

5-1. Block Diagrams....................................................... 7

5-2. Printed Wiring Board –MAIN Section (SideA) – ..8

Printed Wiring Board –MAIN Section (Side B) – .. 9

5-3. Schematic Diagram –MAIN Section (1/2) –...........10

5-4. Schematic Diagram –MAIN Section (2/2) –...........11

5-5. IC BLOCK DIAGRAMS ........................................ 12

6. EXPLODED VIEWS

6-1. Cassette Lid, Cabinet (Rear) Section ...................... 13

6-2. Cabinet (Front) Section ...........................................14

6-3. Mechanism Deck Section-1 (MT-450-175) ............ 15

6-4. Mechanism Deck Section-2 (MT-450-175) ............ 16

7. ELECTRICAL PARTS LIST................................ 17

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.

REC/BATT

REC TIME/

PLAY MODE*

VOR

TAPE COUNTER

xSTOP

mREW/REVIEW

PAUSE.

MIC (PLUG

IN POWER)*

EAR

Microphone

DC IN 3V

zREC

Tape counter

reset button

*The button/jack has a tactile dot.

TCM-450DV

SECTION 2

DISASSEMBLY

• This set can be disassembled in the order shown below.

2-1. CABINET (REAR)

Note: Follow the disassembly procedure in the numerical order given.

Cassette lid assy, LED board

Cabinet (front) Main board Belt (Counter), Belt (CAP) S, M901 (Capstan/reel motor),

HRP901 (REC/PB head), HE901 (ERASE head)

Set Mechanism deck

Cabinet (Rear)

two screws (B1.7 X 9)

speaker (SP1)

two screws (1.7 X 3)

cabinet (rear)

cabinet (front)

two screws

(B2.0)

Remove solder on MAIN boar

(two places)

claw

MAIN board

S501

RV101

RV201

knob (speed) sub assy

knob (VOL)

knob (VOR)

• On installation cabinet (rear),

adjust the S501 and knob (VOR).

• On installation cabinet (rear),

adjust the RV201 and knob

(speed) sub assy.

• On installation cabinet (rear),

adjust the RV101 and knob

(VOL).

TCM-450DV

2-2. MAIN BOARD

GRY

ORG

BLK

RED

screw (B1.7 X 9)

MAIN board

screw (1.4 X 3)

screw (1.4 X 4.5)

cabinet (front)

Remove solder

(three places)

Remove solde

(eight places)

S301

knob (pause)

• On installation MAIN board,

adjust the S301 and knob (pause).

2-3. MECHANISM DECK (MT-450-175)

two screws (M1.4)

screw

spring (ground) cabinet (front)

mechanism dec

(MT-450-175)

TCM-450DV

2-4. BELT (COUNTER),BELT (CAP) S, M901 (CAPSTAN/REEL MOTOR),HRP901 (REC/PB HEAD),

HE901 (ERASE HEAD)

belt (counter)

belt (CAP) S

two screws (M1.4X1.4

)

two screws (M1.4X1.4)

screw (M1.4X4.5)

HRP901(REC/PB head)

HE901 (ERASE head)

M901 (capstan/reel motor)

2-5. CASSETTE LID ASSY, LED BOARD

• Install the cassette lid assy with

the cassette-up spring as shown

in the figure so that it fits into the

holes on the casstte lid assy.

Remove solder on MAIN board

(three places)

MAIN board

projection

cassette-up spring

cassette lid assy

two screws (M1.4)

LED board

cassette lid assy

cassette-up spring

cabinet (front)

TCM-450DV 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

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. 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)

Torque Measurement

SECTION 4

ELECTRICAL ADJUSTMENTS

Tape Speed Adjustment

Mode: playback

Setting:

•Supplied voltage: 2.5 V

•Switch and control position

VOL contorl (RV101) : mechanical center

PAUSE switch (S301) : OFF

SPEED CONTROL (RV201) : center click

VOR switch (S501) : OFF

TestTape

0dB=0.775V

Type Signal Used for

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

frequency

counter

test tape

WS-48A

(3 kHz, 0 dB) 16 Ω

EAR jack (J102)

set +

–

RV602

Tape Speed Adjustment

(Double Speed)

RV601

Tape Speed Adjustment

(Normal Speed)

Procedure:

1. Set [RECTIME/PLAYMODE] switch (S601) to NORMAL

(4.8 cm/s) position, and playback the tape (WS-48A) .

2. Adjust RV601 so that frequency counter reading becomes

3,000 Hz.

Specification values: 2,985 to 3,015 Hz

3. Set [RECTIME/PLAYMODE] switch (S601) to DOUBLE

(2.4 cm/s) position.

4. Playback the tape from the beginning for two minutes, then

adjustRV602sothat frequency counterreading becomes 1,500

Hz.

Specification values: 1,493 to 1,507 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) .

Adjustment Location:

– MAIN BOARD (Side B) –

TCM-450DV

5-1. BLOCK DIAGRAM S

10 11

DRIVE

FEEDBACK

POWER ON

DETECT

Q901

LED

DRIVER

Q703, 706

BRAKE

SWITCH

Q601,603

F F OSC

Q704

OSC

LOGIC

CIRCUITY

S101 (5/6)

REC PB

RIPPLE

FILTER

REC

ALC

REC

VOR

START/STOP

SETECT

Q305,D301

SWITCH

Q804

J101

MIC

(PLUG IN POWER)

MIC1

MIC

S101

(2/6,3/6)

REC PB

Q301

M901

CAPSTAN/

REEL

MOTOR

D701

REC/BATT

D302

REEL

PH801

HRP901

REC/PB

HEAD

HE901

ERASE

HEAD

U OUT

V OUT

W OUT

VCC

TAPE SPEED

(NORMAL)

VCC

VREF

IN+

S/S

S601 (1/2)

REC TIME/

PLAY MODE

NORMAL

DOUBLE

PRE AMP

IC101 (1/2)

BTL POWER AMP

IC101 (2/2)

NC RFLT IN

PRE OUT

RFLT

OUT

+VDD

PRE2 IN

PRE2 NF

22 REG

REG OUT

+VREF

SP IN

ALC IN

MOTOR DRIVER

IC601

SP1

(SPEAKER)

J102

EAR

S501

VOR

OFF

RV601

TAPE SPEED

(DOUBLE)

RV602

RV201

S601 (2/2)

REC TIME/

PLAY MODE

DOUBLE NORMAL

SPEED

CONTROL

FAST SLOW

S101 (6/6)

REC

S101 (4/6)

REC PB

S301

PAUSE

Q802 Q407

Q408

Q409

Q413

Q412

Q402

Q405

Q410

GATE

Q402,407,409

DIFFERENTIAL DETECT

OFF

RV101

VOL

D702

+1.7V REG.

IC102

VOUT

VDD

LEVEL DETECT

IC701

VOUT VDD

+VCC

Q902

Q702

Q302

PRE1 OUT

PRE1 NF

PRE1 IN

+VREF

LED

DRIVER

Q701

SWITCH

Q705

DELAY

SWITCH

DRIVE

Q602,604

REEL

ROTATION

DETECT

Q801,803

SWITCH

Q411

S102

(POWER)

J901

DC IN 3V

DRY BATTERY

SIZE "AAA"

(IEC DESIGNATION R03)

2PCS, 3V

S401

FF/REW

DETECT

S602

(FF/REW)

SWITCH

Q404

+VCC

+VDD

BUFFER

Q401,403

GATE

Q805

S101 (6/6)

REC PB

Q303,304

MUTE

•Signal path.

E: PB

a: REC

SECTION 5

DIAGRAMS

TCM-450DV

5-2. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) –

BOARDMAIN (SIDE A)

R802

R407

R312

PH801

R709

R708

R706

R409

R704

R717

R713

R401

R707

R702

R703

R410

R803

R113R114

R109

R115

C703

C117

C120

IC102

C606

C608

C401

C402

R107

C122

R128

R901

C501

C901

R908

R907

R902

Q902

Q901

C504

C406

C701

C114

R104

R103

R308

R608

R610

R617

R712

R614

R616

R613

R612

R307 R105

C105

C106

C610

C125

S301

S601

REC TIME

/PLAY MODE

NORMAL DOUBLE

S501

C124

Q602

Q603

Q705

Q404

Q805

Q410

Q402

Q702

Q701

Q703

IC701

Q601 Q604

C306

C108

C502

R310

R110R129

R111R127

Q413

S102

(POWER)

S602

(FF/REW)

Q412 Q411

E B C

C B E

EEE

PAUSE .

ON OFF

OFF

VOR

(11)

1-860-840-

23 4 5 6 7 89

Note:

•X: parts extracted from the component side.

•r: Through hole.

•: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side: Partsonthepatternfacesideseenfrom

(Conductor B) the pattern face are indicated.

Parts face side: Parts on the parts face side seen from

(Component A) the parts face are indicated.

Ref. No. Location

IC102 D-7

IC701 E-3

Q402 E-4

Q410 E-4

Q411 B-6

Q412 B-6

Q413 B-6

Q601 D-3

Q602 D-3

Q603 D-3

Q604 D-3

Q701 E-3

Q702 E-3

Q703 E-2

Q705 E-3

Q805 E-3

Q901 E-6

Q902 E-6

• Semiconductor

Location

TCM-450DV

PRINTED WIRING BOARD – MAIN SECTION (SIDE B) –

VOL

SPEED

CONTROL

C312

C103

C115

C113

C101

C102

C104

R315

R313

R309

C107

R314

R316

R302 C301

R304

R201

R124

S101

REC

R108

C308

R806

Q801

Q803

S401

(FF/REW DET) R402

R403

R716

R807

R609

R606

R611

RV101

RV201

R125

R119

IC101

R502

C309

C302

C311

C303

24 13

112

IC601

20 11

110

R118

R120

C111

C112

C307

C119

C305

C123

R311

C109

R405

R408

R406

R809

C802

R810

R714

R607

W601

W602

W603

W604

VCC

W704

W705

W706

SL1

W303

W201

W202

W104

W103

W304

R112

R404

R301

R808

R603 R615

R602

R601

R605

C116

C505

R102

R305

R303

R318

C803

C601

C604

C607

C602

C801

C404

C705

C609

C403

C405

C605

C706

C704

C315

C314

Q409

Q303

Q405

Q408

Q804

Q407

Q403

123

Q401

Q706

BEB

C C

Q704

Q802

Q305

Q304

Q302

Q301

D301

D801

D302

THP601

RV601 RV602

TP14

TP27

TP13

TP4

J101

TP3

TP11

TP33

J102

TP30

TP18

TP17

TP20

TP19

TP21

TP15

TP23

TP34 TP12 TP801

TP804

TP10

TP26 TP28

TP32 TP22

TP25

TP29

TP31

J901

TP805

TP803

TP802

TP16

TP24

(11)

1-860-840-

(11)

1-860-841-

(SIDE B)BOARDMAIN

BOARDLED

HE901

ERASE HEAD

HRP901

RECORD/

PLAYBACK

HEAD

MIC1

MIC

(PLUG IN POWER)

EAR

VCC

M901

CAPSTAN/REEL

MOTOR

DC IN 3V

-1

-4 -5 -6

-2 -3

SP1

SPEAKER

DRY BATTERY

SIZE "AAA"

(IEC DESIGNATION R03)

2PCS, 3V

M703

M702

M701

D702

D701

REC

/BATT

23 4 5 6 7 89 10

Ref. No. Location

D301 B-3

D302 B-3

D701 F-4

D702 F-6

D801 E-5

IC101 E-4

IC601 C-7

Q301 B-3

Q302 B-3

Q303 E-5

Q304 B-3

Q305 B-3

Q401 D-7

Q403 E-7

Q404 E-6

Q405 E-5

Q407 D-7

Q408 E-7

Q409 E-6

Q704 D-7

Q706 D-8

Q801 E-5

Q802 D-6

Q803 E-6

Q804 E-6

• Semiconductor

Location

TCM-450DV

1010

5-3. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) –

IC101

D301

S601(2/2)

D302

C101

C102

C103 C104

C108

C504

C308

C309

C312

C303

C305

C307 C114

R304

R305

S501

R312

R201

R112

R113

R114

C119

R120

R311

R310

R315

R316

C113

C115

C401

C402

R109

R115

C124 C125

C123

C120

R303

R102

C105

R104

C106

R105

R308

C107

C109

C302

R901

R907 R908

C901

R110 R127

R129

C122

R128

R111

C116

C117

C501

R125

R405

R406

R407

R408

R314

R301

C111

R108

C112

C306

S602

R410

R103

R107

R307

R318

S101(2/6)

S101(3/6)

S101(5/6)

S101(6/6)

S101(4/6)

J102

J101

IC102

R313

S301

Q902

Q901

RV101

Q301

Q411

Q305

Q303

Q404

R119

R124

R118

R902

Q302

SP1

C301

R309

Q413

Q412

Q405

Q402

HRP901

C502

R502 C505

R302

C311

Q304

MIC1

HE901

BH3682FV

1SS355TE-17

0.1

0.01 0.01

10V

0.01

2.2

10V

220

2.2

4.7

4V 0.22

10k

22k

2.2k

220k

0.01

470

4.7k

10V

470

10V 10

10V

0.01

2.2k

100k

4700p

100k

0.01

47k

22k

16V

2200p

10V

2.2k

220k 47k

22k 22k

47k

0.22

470

22k

0.022

1000p

2.2k

100k

4.7k

10k

470

4700p

10V

(FF/REW)

22k

10k

220

22k

MM3031HULE

2.2k

2SA1576A

SWITCH

2SC4081T106Q

POWER ON

DETECT

DTC114TUA-T106

SWITCH

DTA114YUA-T106

SWITCH

2SA1576A-T106-QR

START/STOP

SELECT

DTC114YUA-T106

MUTE

2SA1576A-T106-QR

+B SWITCH

470

220

220k

DTC144EUA-T106

BUFFER

6.3V

10k

DTC114YUA-T106

INVERTER

DTC114YUA-T106

INVERTER

2SC4081T106Q

INVERTER

DTA114YUA-T106

DIFFERENTIAL

DETECT

4.7

10k 0.047

2.2k

470

2SC4213-AB-TE85L

MUTE

MIC

GND

VOR

ALC

POWER

VCC

PAUSE

GATE

REEL

GND

VDD

VOUT

PB REC

OFF

VOR

OFF

VOL

EAR

MIC

(PLUG IN POWER)

PRE AMP

BTL POWER

AMP

+1.7V REG.

REC

PAUSE

SPEAKER

HEAD

RECORD/

PLAYBACK

HEAD

ERASE

PRE1 NF

REG OUT

PRE1 OUT

PRE2 IN

VOR TAU

VOR C

VOR IN

VOR OUT

SP BIAS

SP2 OUT

PWR VCC

PRE1 IN

PRE GND

PRE2 NF

VOR CTRL

PRE2 OUT

ALC TAU

ALC DETIN

SP IN

SP1 OUT

SP GND

PRE VCC

RFLTIN

RFLTOUT

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