Sony TCS-60DV Service Manual

TCS-60DV

SERVICE MANUAL

Ver 1.1 2000. 11

With SUPPLEMENT-1 (9-926-969-81)

SPECIFICATIONS

US Model

Canadian Model

AEP Model

E Model

Model Name Using Similar Mechanism TCM-50DV

Tape Transport Mechanism Type MT-50-30

Recording system 4-track 2 channel stereo
Tape speed 4.8 cm/s or 2.4 cm/s
Frequency range 250 – 8,000 Hz using nomal (TYPE1) cassette

(with REC TIME switch at “NORMAL”)
Speaker Approx. 3.6 cm (17/16 in.) dia. ×2
Power output Speakers : 160 mW + 160 mW

(at 10 % harmonic distortion)

Headphones : 6 mW + 6 mW

(at 10 % harmonic distortion)

Input Microphone input jack (minijack) sensitivity

0.2 mV for 3 Ω or lower impedance

microphone
Output 2 (headphones) jack (minijack) for

8 – 300 Ω earphone

Variable range of the tape speed

From approx. +25 % to – 15 %
(with REC TIME switch at “NOMAL”)

Power requirements 3 V DC batteries AA (R6) ×2/

External DC 3 V power sources

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

Approx. 88.7 × 113.4 × 41.3 mm
(31/2 × 41/2 × 111/16 inches), incl.

Mass Approx. 280 g (9.9 oz)

Design and specifications are subject to change without notice

MICROFILM

CASSETTE CORDER

TABLE OF CONTENTS

1. SERVICE NOTE·······························································3

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

3. DISASSEMBLY

3-1. Cabinet (rear) Assy, Lid Sub Assy, Cassette··················· 5
3-2. MAIN Board, Mechanism Deck ····································· 5
3-3. Belt·················································································· 6
3-4. Head ················································································ 6
3-5. Motor, DC ······································································· 7
3-6. Precaution For Attaching The MAIN Board··················· 7

4. ADJUSTMENT ································································· 8

5. DIAGRAMS

5-1. Block Diagram ································································ 9
5-2. Schematic Diagram······················································· 11
5-3. Printed Wiring Board –MAIN Section – ······················15
5-4. Printed Wiring Board –LED Section – ·························20
5-5. IC Block Diagrams ······················································· 24
5-6. IC Pin Function Discription ·········································· 26

6. EXPLODED VIEWS

6-1. MAIN Section -1 ··························································27
6-2. MAIN Section -2 ··························································28
6-3. Mechanism Deck Section -1 ········································· 29
6-4. Mechanism Deck Section -2 ········································· 30

7. ELECTRICAL PARTS LIST ······································· 31

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be
damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of soldering iron around 270˚C
during 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.

— 2 —

SECTION 1

SERVICE NOTE

The TCS-60DV detects rotation of both the supply and take-up side
reels using the PH701 (photo reflector). Because the PH701 is
mounted on the Main board, auto stop is activated and reel rotation
cannot be detected when the Main board is removed. To check the
operation of mechanism deck and voltage without the Main board,
follow the procedure as described below.

How to remove the Main board (opening the Main board)

1) Refer to page 5 “3. Disassembly”.

How to enter the fast forward/rewind modes

1) Input the square wave to the TP41. (Refer to the illustration
below.)

2) Press the fast forward/rewind keys.

3) Turn on the S301.

How to enter the playback mode

1) Input the square wave to the TP41. (Refer to the illustration
below.)

2) Press the playback key.

3) Set the S302 to the PLAY.

4) Turn on the S301.

How to enter the record mode

1) Input the square wave to the TP41. (Refer to the illustration
below.)

2) Press the record key.

3) Set the S302 to the REC.

4) Turn on the S301.

Oscillator

PULSE

10Hz 1.6V (4.5dB)

TP1

(Side B) (Side A)(Side A)

TP41

S301

S302

— 3 —

SECTION 2

GENERAL

This section is extracted
from instruction manual.

1 2 Headphone jack
2 MIC (PULG IN POWER) jack
3 VOL knob
4 r REC button
5 p STOP button
6 PLAY button
7 SPEED CONTROL knob
8 REW/REVIEW button
9 FF/CUE button
0 DIR c switch
!¡ Hand strap

!™ Tape direction indicators
!£ SPEAKER (REAR SIDE)
!¢ TAPE COUNTER switch
!∞ Flat mic
!§ PAUSE c switch
!¶ REC TIME switch
!• BATT/REC indicator
!ª VOR switch
@º Battery compartment
@¡ i indicator
@™ DC IN 3V jack

— 4 —

Disassemble the unit in the order as shown below.

SECTION 3

DISASSEMBLY

Set "Cabinet (rear) assy", "lid sub assy, cassette" Main board, Mechanism deck Belt

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

3-1. “CABINET (REAR) ASSY”, “LID SUB ASSY, CASSETTE”

9

Lid Sub Assy, Cassette

5

PWB, LED Flexible

8

Screw, ornamental

Claws

7

Screw, ornamental

6

Shaft(A), stopper

3

Remove the Cabinet (rear) assy

in the direction of the allow

4

Remove speaker cable (4pcs)

Claws

Head
Motor, dc

2

Two screws(+B1.7 × 9)

3-2. MAIN BOARD, MECHANISM DECK

NOTE: For attaching the Main board,

refer to the next page.

1

Three screws(IB LOCK)

2

4

1

Two screws(+B1.7 × 9)

8

Mechanism deck

6

PC board, Head flexible

3

— 5 —

5

PC board, Motor flexible

7

MAIN board

Two screws(M1.4), Toothed lock

3-3. BELT

1

Belt(motor)

2

Belt(flywheel)

3

Belt(counter)

• How to thread the belt

Belt(flywheel)

Belt(motor)

Belt(counter)

3-4. HEAD

1

two screws

2

head, magnetic

(REC/PB/ERASE)

— 6 —

3-5. MOTOR, DC

)

3 Remove the four solders.

2 screw (1.4)

1 screw (1.4)

4 Motor, DC

3-6. PRECAUTION FOR ATTACHING THE MAIN BOARD

• Attach the knobs of the switches S302, S303, and S701 on the Main board
while aligning them with the claws of the REC lever, write-protection 2
lever, and the PAUSE lever respectively.

MAIN board

S701

S303

S302

Write-protection lever
(align it with S303)

Mechanism deck

REC lever
(align it with S302)

PAUSE lever (align it with S701

— 7 —— 7 —

SECTION 4

y

)

ADJUSTMENTS

4-1. MECHANICAL ADJUSTMENT

PRECAUTION

1. Clean the following parts with a denatured-alchool-moistened
swab:

record/playback/erase head pinch roller
head rubber belts
capstans idlers

2. Demagnetize the record/playback/erase 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. Unless specified otherwise, use a specified voltage (3.0V) to
perform the adjustments.

Torque Measurement

Mode

FWD

FWD
back tension

FWD

FWD
back tension
FF
REW

Torque Meter

CQ-102C

CQ-102RC

CQ-201B

Meter Reading

20 – 35g•cm

0.28 – 0.48 oz•inch

0.5 – 5.0g•cm

0.007 – 0.07 oz•inch
20 – 35g•cm

0.28 – 0.48 oz•inch

0.5 – 5.0g•cm

0.007 – 0.07 oz•inch

more than 40g•cm

more than 0.5 oz•inch

4-2. ELECTRICAL ADJUSTMENT

0dB = 0.775V

1. Perform adjustments on the following conditions unless
otherwise specified.

• Switches and controls positions

VOL knob···························································· Maximum
SPEED CONTROL knob ······················· Mechanical center
V•O•R switch ································································OFF
REC TIME switch ····················································Normal

Test tape

Test Tape

WS-48A

Signal

3kHz, 0dB

Tape speed adjustment

Used for

Tape Speed Adjustment

Procedure :

Mode : Playback (FWD)

test tape
WS-48A
(3kHz, 0dB)

set

Headphone jack(J303)

digital frequenc
counter

16

Ω

+

–

Adjust R V602 (standard)/R V603 (double speed) until the frequency
counter reading
becomes 3,000 Hz at the standard mode and 1,500 Hz at the double
speed mode.

Specification Value :

Tape speed

RV602(Normal)

RV603(High)

Digital frequency counter

2,970 – 3,030Hz
1,485 – 1,515Hz

Frequency difference between the beginning and the end of the
tape should be within 1% (30Hz).
Upon completion of adjustments, select the REV playback mode
and check that the measurement value is within the specifications.

Adjustment Location :

RV603(HIGH)

RV602(NORMAL

— 8 —— 8 —

5-1. BLOCK DIAGRAM

MIC901

L

STEREO

Flat Mic

MIC902

R

HRPE901

L CH

FWD

R CH

L CH

REV

R CH

ERASE

(FWD)

ERASE

(REV)

S501

..

V O R

16

<
>

<
>

D502

REC

D501

POWER

D503

OFF

LOW

HIGH

PH701

(TAPE END DET.)

SIGNAL PATH

PLAY:

REC:

Q504

LED

SWITCH

Q505

LED

SWITCH

SWITCH

Q501

B+

6

24

REC B+

+

–

+

–

Q703

LED

SWITCH

SECTION 5
DIAGRAMS

S303(1/4)

DIR

FWD

S303(2/4)

DIR

FWD

FWD

REV

VOICE

MIRROR

Q502,503

IC502

BATTERY

DETECT

5

RCV TIME

1

IN

6 OUT 2

IC501

V O R

9
8

21

23

REV

REV

S303(3/4)

OUT 1

..

SWITCH

Q708

IC301

MIC AMP

DIR

B+

7

10

20

PAUSE

7

Vcc

S702

(FWD/RCV)

S703

DIR

S704

REW/FF

SWITCH

B+

S701

S303(4/4)

DIR

Q705,706

T301

Q301

REV

FWD

RESET

+

–

+

–

Q701

BIAS
OSC

13

17

S302(2/4)

REC/PLAY

REC

REC B+

18

OUT-4

17

OUT-5

IN-2

5

6

IN-3

IN-5

8

4

IN-1

10 IN-7

11 IN-8

CL

3

PLAY

IC303

REGULATOR

2

3

23

22

15

1

S601(1/2)

REC TIME

NORMAL

HIGH

IC701

SYSTEM CONTROL

J301

MIC

(PLUG IN POWER)

MIC

MIC

GCA

PB

GCA

PB

REF

OUT-2
OUT-1

IN-4
IN-6

CONT

IC305

REC/PLAY

PRE AMP

20
21

19OUT-3

7
9

23

AMP

AMP

REC TIME

S302(4/4)

REC/PLAY

S302(1/4)

REC/PLAY

LINE

+

–

LINE

+

–

CONTROL

S601(2/2)

NORMAL

HIGH

Q707

SWITCH

D-D CONV.

REC

REC

PB/

REC

Q704

MOTOR

PLAY

REC

Q702

OSC

PLAY

REC

14

Vcc

8

910

17

16

13

IC601

MOTOR SERVO

RV602

TAPE SPEED

RV603

TAPE SPEED

RV601

SPEED

CONTROL

B+
REC B+

T701

B+
REC B+

Q302

RIPPLE
FILTER

RV301(1/2)

VOL

RV301(2/2)

VOL

19
11

12

13

B+

SYSCON B+
(FOR IC701)

MOTOR SERVO B+

(FOR IC601,M601)

1

16
12 BASE

7
8

5
6

7
8

5
6

DETECT

WAVE FORM

REF.VOLTAGE

CURRENT

DETECT

IC304

HEADPHONE AMP

IN (L)

OUT (L)

OUT (R)

IN (R)

MUTE

IC101

SPEAKER AMP

+

–

–

+

IC201

SPEAKER AMP

+

–

–

+

REC

PLAY

Q307

MUTE

SWITCH

Q308

MUTE

SWITCH

LOGIC

PRE DRIVER

(POWER)

IC702

REG

7

10

5

1

3

1

3

S302(3/4)

REC/PLAY

20

1

2

S301

SPEAKER AMP B+

(FOR IC101,201)

Q303

MUTE

B+

MOTOR

Q601,602

BRAKE

Q603,604

SWITCH

+

(

Q304,306

MUTE

SWITCH

(CAPSTAN/REEL MOTOR)

IEC DESIGNATION R6P

M601

U

V

W

DRY BATTERY

SIZE "AA"

2PCS. 3V

J302

DC IN 3V

TCS-60DV

J303

SP901

(SPEAKER L)

SP902

(SPEAKER R)

)

— 9 — — 10 —

TCS-60DV

5-2. SCHEMATIC DIAGRAM

12

A

B

C

D

34567891011121314151617181920212223242526

E

F

G

H

I

• Wavef orm

TP45 REC DOUBLE MODE

1

10 µsec/div

5 V/div

K

L

M

O

P

J

1

2

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

• % : indicates tolerance.

• C : panel designation.

• U : B+ Line.

• H : adjustment for repair.

• Power voltage is dc3 V and fed with regulated dc power
supply from battery terminal.

• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : REC/PB
( ) : REC
< > : PB

• Voltages are tak en with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc­tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

E : REC
a : PB

52 kHz

TP45 REC NORMAL MODE

10 µsec/div

10 V/div

52 kHz

IC303 3 LX REC

5 µsec/div

1 V/div

4

W or less unless otherwise

— 11 — — 12 — — 13 — — 14 —