Sony TCS TCS-30D Manuale utente

SERVICE MANUAL

STEREO CASSETTE-CORDER

US Model

Canadian Model

AEP Model

E Model

Chinese Model

SPECIFICATIONS

TCS-30D

Model Name Using Similar Mechanism NEW

Tape Transport Mechanism Type MT-30D-118

Specifications

Recording system

4-track 2 channel stereo

Tape speed

4.8 cm/s or 2.4 cm/s

Frequency range

Recording: 250-6,300Hz

layback: 50-14,000Hz

using nomal (TY E I) cassette

(with REC TIME switch at

“NORMAL”)

Speaker

Approx. 3.6 cm (1

in.) dia.

Power output

350 mW (at 10 % harmonic

distortion)

Input

Microphone input jack (minijack)

sensitivity 0.3 mV for 3 kilo-ohms

or lower impedance microphone

Output

i (headphones) jack (minijack) for

8-300 ohms headphones

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) × 2/

External DC 3 V power sources

Dimensions (w/h/d) (incl. projecting

parts and controls)

Approx. 91 × 112 × 39.2 mm

× 4

× 1

in.)

Mass

Approx. 170 g (6.0 oz.)

Supplied accessories

Headphones (1)

Stereo microphones (1)

Design and specifications are subject

to change without notice.

Battery life (Approx. hours) (EIAJ*)

Sony Sony

alkaline R6P

LR6 (SG) (SR)

Playback 92

Recording 12 3

* Measured value by the standard of

EIAJ (Electronic Industries

Association of Japan). (Using a Sony

HF series cassette tape)

Note

The battery life may shorten

depending on the operation of the

unit.

Ver 1.0 2000. 03

– 2 –

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. MECHANICAL ADJUSTMENTS....................... 8

5. ELECTRICAL ADJUSTMENTS......................... 9

6. DIAGRAMS

6-1. Block Diagram ................................................................ 11

6-2. Printed Wiring Boards..................................................... 13

6-3. Schematic Diagram ......................................................... 15

7. EXPLODED VIEWS................................................ 18

8. ELECTRICAL PARTS LIST ............................... 21

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.

– 3 –

SECTION 1

SERVICING NOTES

THE OPERATION CHECK AND THE VOLTAGE CHECK

WHENTHE MAIN BOARD REMOVED

This set detects which button of [REC], [PLAY], [FF], or [REW]

was pressed using the POWER switch (S303).

However, this button operation cannot be detected if the MAIN

board is removed because the POWER switch (S303) is mounted

on the MAIN board.

Therefore, if the operation check and the voltage check are per-

formed with the MAIN board removed,the POWER switch (S303)

must be fixed to ON state.

S303

– MAIN BOARD (Conductor Side) –

TAP201

TAP101

TAP202

TAP102

TAP201

TAP101

TAP202

TAP102

IC302

–MAIN BOARD (Conductor Side) –

CHANGETHE SPECIFICATION (US Model Only)

For the mounted MAIN board (A-3021-325-A), the TAP101 and

201 patterns are opened.

This specification is for the Canadian,AEP, E, and Chinese mod-

els.

Accordingly for the US model, short the TAP101 and 201 with a

solder to change the specification.

– 4 –

SECTION 2

GENERAL This section is extracted from

instruction manual.

DC IN 3V

AC power adaptor

Adaptador de alimentación

de CA

Transformador de corrente

REC TIME

MIC

zREC

xSTOP

mREW/

REVIEW

PAUSE .

BATT

Built-in microphone

Micrófono incorporado

Microfone incorporado

Side A

Cara A

Tab for side A

Lengüeta de la cara A

Patilha do lado A

Capstan

Cabrestante

Erase head

Cabezal de borrado

Cabeça de eliminaçao

Pinch-roller

Rodillo de

apriete

Roletes

Cotton swab

Bastoncillo de

algodón

Cotonete

Record/playback head

Cabezal de grabación/

reproducción

Cabeça de gravação

MIC (PLUG IN POWER)

VOL

Lever

Palanca

Alavanca

NPLAY

xSTOP

mREW/REVIEW

PAUSE .

SPEED CONTROL

MFF/CUE

– 5 –

CABINET (REAR), “LID BLOCK ASSY, CASSETTE”

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

SECTION 3

DISASSEMBLY

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

SET CABINET (REAR),

“LID BLOCK ASSY, CASSETTE”

MAIN BOARD,

MECHANISM DECK (MT-30D-118) BELT

8lid block assy, cassette

INSTALLATION “SPRING, CASSETTE”

cabinet (front)

5strap, hand

3claw

3four claws

2screw

(IB lock)

4cabinet (rear)

1three screws

(B1.7 ×10)

7boss

6Remove five solders.

lid, cassette

spring, cassette

– 6 –

MAIN BOARD, MECHANISM DECK (MT-30D-118)

BELT

6claw

2screw

(1.7)

3screw

(M1.4)

4MAIN board

7mechanism deck

(MT-30D-118)

5three screws

(IB lock)

1Remove two solders of

electret condenser microphone

(MIC901).

1Remove four solders of

magnetic head (HRP901).

1Remove two solders of

motor (M901).

Cabinet (front)

1belt (capstan)

2belt (FR)

capstan belt

FR belt pulley (FR) assy

flywheel assy

motor, DC

– 7 –

INSTALLATION MAIN BOARD

NOTE: On installation MAIN board, adjust to the

S301 and the S303.

screw

(1.7) screw

(M1.4)

MAIN board

S301 (REC/PB)

S303

(POWER)

lever (REC)

– 8 –

Mode Torque Meter Meter Reading

4.90 mN•m

FWD CQ-403C (more than 50 g)

(more than 1.76 oz)

Mode Torque Meter Meter Reading

FWD 2.16 - 4.7 mN•m

(22 - 48 g•cm)

CQ-102C (0.31 - 0.67 oz•inch)

FWD 0.05 - 0.29 mN•m

(0.5 - 3 g•cm)

Back Tension (0.007 - 0.04 oz•inch)

FF 4.90 mN•m

CQ-201B (more than 50 g•cm)

REW (more than 0.69 oz•inch)

SECTION 4

MECHANICAL ADJUSTMENTS

TapeTension Measurement

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

swab:

record/playback head pinch roller

erase head rubber belt

capstan idlers

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.

Torque Measurement

– 9 –

SECTION 5

ELECTRICAL ADJUSTMENTS

Tape Speed Adjustment

Setting:

Procedure:

– Normal –

1. Set the [REC TIME] switch (S601) to [NORMAL] position.

2. Playback WS-48A (tape center) in the FWD state.

3. Adjust RV601 so that the frequency counter reading becomes

3,000 Hz.

Specified Value: 2,970 to 3,030 Hz

4. Check that deflection of the frequency counter reading between

the beginning and the end of tape is within 1.5% (approx. 45

Hz).

– Double (1/2 SPEED) –

1. Set the [REC TIME] switch (S601) to [DOUBLE] position.

2. Playback WS-48A (tape center) in the FWD state.

3. Adjust RV602 so that the frequency counter reading becomes

1,500 Hz.

Specified Value: 1,485 to 1,515 Hz

Adjustment Location:

PRECAUTION

1. Specified voltage : 2.5 V (DC)

2. Setting

SPEED CONTROL dial : center click

0 dB=0.775 V

TestTape

Record/Playback Head Azimuth Adjustment

Setting:

Mode: playback (normal speed)

Procedure:

1. Turn the adjustment screw to obtain the maximum reading on

level meter.

Note: Several peaks may appear, but take the maximum.

2. After the adjustment, lock the adjustment screw with suitable

locking compound.

Adjustment Location:

Type Signal Used for

P-4-A063 6.3 kHz, –10 dB Head Azimuth Adjustment

WS-48A 3 kHz, 0 dB Tape Speed Adjustment

level mete

test tape

P-4-A063

(6.3 kHz, –10 dB) US: 32 Ω

Except US: 16 Ω

set

ijack (J301)

–

adjustment screw

Press the N

button.

frequency counter

test tape

WS-48A

(3 kHz, 0 dB)

set

ack

(

J301

)

–

US: 32 Ω

Except US: 16 Ω

RV602

Tape Speed Adjustment

(Double)

J301

RV601

Tape Speed Adjustment

(Normal)

J302

– MAIN BOARD (Conductor Side) –

TCS-30D

– 11 – – 12 –

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM

• SIGNAL PATH

: PB

: REC

: MIC

R-CH: Same as L-CH.

L-CH

R-CH R-CH

HE901

(ERASE)

HRP901

(REC/PB)

PB PREAMP, MIC AMP, REC AMP

IC301

38 16

PB IN

MIC

REF

REC DRV

OUT A 9

REC DRV

IN A

LINE

OUT A

PB PREAMP

REF

MIC

AGC

ATT

LINE

AMP

AGC

DET

REC

AMP

REC/PB

SWITCH

HEADPHONES

AMP

S301-4

(REC/PB)

REC

S301-2

(REC/PB)

REC

REC BIAS

SWITCH

Q102

B+

R-CH

2GCA

MIC

AMP

R-CH

MIC901

MIC

PULG IN POWER

J302

PB/REC

DISCHARGE

SWITCH

Q301

VOL

MUTING

RV301

IN A

OUT

IN A

IN B

MUTE

HEADPHONES AMP

IC302 (1/2) R-CH

INV

OUT

INVERTER

AMP

OUT

ASP901

(SPEAKER)

RIPPLE

FILTER

POWER

AMP

POWER

AMP

SPEAKER AMP,

RIPPLE FILTER

IC303

REF IN REF CNTL

STANDBY

J301

BATT B+ DRY BATTERY

SIZE “AA”

(IEC DESIGNATION R6)

2PCS. 3V

CN301

DC IN 3V

–+

S303

(POWER)

RIPPLE FILTER

Q308

MIC B+

STANDBY

SWITCH

Q304 S301-3

(REC/PB)

REC

B+

PULG IN/OUT

MUTE SWITCH

Q307-1

SPEAKER AMP

SWITCHING

Q306

Q307-2

PAUSE

S302

BATT

D401

OFF

MUTE PULSE

GENERATOR

(PAUSE ON)

Q309

MUTE PULSE

GENERATOR

(PAUSE OFF)

Q310

MUTING SWITCH

Q302, 303

D301

11 13

BASE

RIPPLE FILTER

IC302 (2/2)

RIPPLE

FILTER

POWER

ON/OFF

RIPPLE FILTER

Q305

MOTOR B+

CAPSTAN/REEL

MOTOR DRIVE

IC601

34 VOUT V+

VCONT

VSENS

MOTOR

DRIVER

TAPE SPEED

(DOUBLE)

RV602

THP601

S301-1

(REC/PB)

REC

REC TIME

S601

NORMAL

DOUBLE

TH602

TAPE SPEED

(NORMAL)

RV601

SPEED

CONTROL

RV603

M901

(CAPSTAN/REEL)

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