Sony Pressman tcm-50dv User manual

– 1 –

Model Name Using Similar Mechanism NEW

Tape Transport Mechanism Type MT-50-30

SERVICE MANUAL

US Model

Canadian Model

AEP Model

E Model

Tourist Model

TCM-50DV

CASSETTE-CORDER

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 normal (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 kilohms or

lower impedance microphone

Output

Earphone jack (minijack) for 8 - 300 ohms earphone

Variable range of the tape speed

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

Power requirements

3 V DC batteriesAA (R6) ×2/External DC 3 V power sources

Battery life(Approx. hours) (EIAJ*)

Sony alkaline LR6 (SG) Sony R6P (SR)

Playback 9.5 1.5

Recording 10.5 2

* Measured value by the standard of EIAJ (Electronic Industries

Association of Japan). (Using a Sony HF series cassette tape)

SPECIFICATIONS

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

Approx. 88.7 ×115.3 ×37.2 mm (3 1/2 ×4 5/8 ×11/2 in.)

Mass

Approx. 250 g (8.9 oz.)

Supplied accessories

Size AA(R6) batteries (2) (Tourist model only)

Earphone (1) (Tourist model only)

Design and specifications are subject to change without notice.

MICROFILM

Ver 1.1 2000. 08

With SUPPLEMENT-1

(9-926-919-81)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 2 –

TABLE OF CONTENTS

Flexible Circuit Board Repairing

•Keep the temperature of the 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.

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.

1. SERVICING NOTE .....................................................3

2. GENERAL

Operating the Unit ................................................................... 4

3. DISASSEMBLY

3-1. Cabinet, Cassette Lid Assy ................................................. 6

3-2. MAIN Board, Cassette Machanism .................................... 7

3-3. Belt ...................................................................................... 8

3-4. Head .................................................................................... 8

3-5. Motor, DC ........................................................................... 9

3-6. Note for Installation of Main Board.................................... 9

4. MECHANICAL ADJUSTMENTS ............................10

5. ELECTRICAL ADJUSTMENTS .............................10

6. DIAGRAMS

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

6-2. Printed Wiring Board –Main Section–.............................. 13

6-3. Schematic Diagram –Main Section–................................. 15

6-4. Printed Wiring Board –Panel Section– ............................. 17

6-5. Schematic Diagram –Panel Section– ................................ 18

6-6. IC Pin Description............................................................. 20

7. EXPLODED VIEWS

7-1. Case Section ...................................................................... 21

7-2. Panel Section ..................................................................... 22

7-3. Mechanism Deck Section-1 .............................................. 23

7-4. Mechanism Deck Section-2 .............................................. 24

8. ELECTRICAL PARTS LIST ....................................25

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 3 –

TP30 TP30

TP20

S101

PB REC

S103

(POWER)

SECTION 1

SERVICING NOTE

1-1. SERVICE MODE

Mode to allow the mechanical parts to operate with the main board

open.

This set uses the photo reflector PH701 to detect the rotation of the

idler gear. PH701 is on the main board and so removal of the main

board does not allow the set to detect the rotation of the idler gear.

This makes motor control impossible which prevents normal

operation.

When repairing the set as energized with the main board removed,

proceed as follows:

1. Setting

1) Remove the cabinet (rear) (refer to the Disassembly) and open

the main board.

2) Apply a trapezoidal of 10 to 100 Hz (at 1.3V) from oscillator to

TP20. (Connect the ground to TP30.)

3) Supply DC 3.0 V to the positive and negative terminals of the

battery with a stabilized power supply.

2. FF mode

1) Apply a trapezoidal to hall sensor TP20.

2) Press the FF key.

3) Turn on the S103 (POWER) switch.

3. REW mode

1) Apply a trapezoidal to hall sensor TP20.

2) Press the REW key.

3) Turn on the S103 (POWER) switch.

4. PLAY mode

1) Apply a trapezoidal to hall sensor TP20.

2) Press the PLAY key.

3) Change over the S101 (REC/PB) switch to PB side.

4) Turn on the S103 (POWER) switch.

5. REC mode

1) Apply a trapezoidal to hall sensor TP20.

2) Press the REC key.

3) Change over the S101 (REC/PB) switch to REC side.

4) Turn on the S103 (POWER) switch.

– main board (conductor side) –

– main board (component side) –

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 4 –

SECTION 2

GENERAL This section is extracted

from instruction manual.

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 5 –

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 6 –

SECTION 3

DISASSEMBLY

•The equipment can be removed using the following procedure.

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

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

1

two screws

(screw (B1.7x9), tapping)

2

two screws

(screw (B1.7x9), tapping)

3

two claws

4

cabinet (rear)

5

LED flexible boar

d

6

shaft (A), stopper

7

screw, ornamental

8

screw, ornamental

9

cassette lid assy

Cabinet (rear),

Cassette Lid Assy Mechanism Deck,

Main board Belts

Head

Motor, DC

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 7 –

3-2. MACHANISM DECK, MAIN BOARD

2

mechanism deck,

MAIN board

1

three screws

(screw (IB lock))

3

Remove the four solders.

4

head flexible board

5

two screws

(screw (M1.4), toothed lock)

6

MAIN board

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 8 –

3-3. BELTS

3-4. HEAD

1

belt (motor)

2

belt (flywheel)

3

belt (counter)

belt (motor)

belt (flywheel) belt (counter)

• How to apply the belts

1

two screws

2

head, magnetic

(REC/PB/ERASE)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 9 –

3-6. NOTE FOR INSTALLATION OF MAIN BOARD

Align the knobs of S101, S103 and S701 on the main board with the

claws of the lever (REC) lever (erase proof 2) and lever (REC) of the

mechanism deck respectively, and install the main board.

3-5. MOTOR, DC

3

Remove the four solders.

1

screw (1.4)

2

screw (1.4)

4

Motor, DC

MAIN board

S103

S101

S701

screws (M1.4), toothed lock

mechanism deck lever (PAUSE)

lever (REC)

lever (erase proof 2)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 10 –

test tape

WS-48A

(3 kHz, 0 dB)

set

8

Ω

EAR jack

digital

frequency counte

r

PRECAUTION

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

swab :

record/playback/erase head pinch roller

capstan rubber belt

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. The adjustments should be performed with the rated power

supply voltage (1.3 V) unless otherwise noted.

Torque Measurement

Mode Torque Meter Meter Reading

15 – 25 g • cm

FWD CQ-102C (0.21 – 0.35 oz • inch)

FWD less than 2 g • cm

back tension (less than 0.03 oz • inch)

15 – 25 g • cm

REV CQ-102RC (0.21 – 0.35 oz • inch)

REV less than 2 g • cm

back tension (less than 0.03 oz • inch)

more than 50 g • cm

FF, REW CQ-201B (more than 0.69 oz • inch)

SECTION 4

MECHANICAL ADJUSTMENTS

1. REC TIME : NORMAL/FWD ·

Playback WS-48A (tape center part) and adjust RV601 so that

reading on the digital frequency counter becomes 3,000 Hz.

2. REC TIME : DOUBLE/FWD ·

Playback WS-48A (tape center part) and adjust RV602 so that

reading on the digital frequency counter becomes 1,500 Hz.

Specification Value :

Digital Frequency Counter Reading

REC TIME : NORMAL REC TIME : DOUBLE

2,985 to 3,015 Hz 1,485 to 1,515 Hz

3. REC TIME : NORMAL/REV ª

Playback WS-48A (tape center part) and confirm that the

reading on digital frequency counter are between 2,985 to 3,015

Hz.

4. REC TIME : DOUBLE/REV ª

Playback WS-48A (tape center part) and confirm that the

reading on digital frequency counter are between 1,435 to 1,515

Hz.

Adjustment Location :

Tape Speed Adjustment

Procedure :

SECTION 5

ELECTRICAL ADJUSTMENTS

PRECAUTION

•Supplied voltage : DC 3.0 V

•Switch and control position

VOL control : max (10)

MIC SENS switch : free (L or H)

V•O•R switch : free (OFF or ON)

SPEED CONTROL control : mechanical center

TestTape

Type Signal Used for

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

RV602

RV601

–main board (conductor side)–

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 11 – – 12 –

TCM-50DV

6-1. BLOCK DIAGRAM

SECTION 6

DIAGRAMS

SP101

SPEAKER

VOL

RV101

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

2PCS,3V

PULSE

AMP

Q708 SWITCH

Q706, 707

DP CON

OSC

Q702

4

+3V

TAPE ROTATION DETECTOR

PH701

10

5

8

6

23 22

32

REC/PB

(FWD)

HRPE901

REC/PB/ERASE HEAD

REC/PB

(REV)

BIAS OSC

Q112

ERASE

(FWD)

ERASE

(REV)

1

7

6

5

SWITCH

Q501

OUT1

RECOVERY

TIME CAP

OUT2 IN

NF LEVEL

SWITCH

Q103 NF LEVEL

SWITCH

Q104

VOR

IC501

NF LEVEL

SWITCH

Q105

MIC SENS

S902

H

L

5

1

28

12

7

11

9 11

27

29

3

• Signal path

: TAPE (PB)

: TAPE (REC)

MIC IN

ALC CONT

PRE NF

EQ IN

VREF OUT

REC OUT

AMP

Q102

2

PRE

OUT

REC

IN

POW

IN POW

OUT1

POW

OUT2

1

2

LED CONTROL

Q704

MUTE

Q109

LED CONTROL

Q302,303

MUTE

DRIVE

Q110

SWITCH

Q107,108

R.F

4

21

26

25

OUT

LED

CONTROL

Q301

D903

BATTERY

VOLTAGE

DETECTOR

IC301

21

23

R/P MUTE

R/P SW

MIC VCC

R.F OUT

S101-2

(REC/PB)

PB

REC

PB

REC

S101-1

(REC/PB)

D901

BATT

D902

REC

J102

MIC

+3V

3

V OUT V IN

REG

IC701

24

D701

MOTOR

CONTROL

Q705

DIRECTION

MOTOR

BRAKE SW

Q601 - 604

19

M901

CAPSTAN/REEL

MOTOR

W OUT

V OUT

U OUT

11

2

1

20

13

12

BIAS REF

VOLTAGE

PULSE

DET OPERATION

LOGIC PRE

DRIVER

CURRENT

DET FREQ.

CHARC.

REF VOLTAGE

FOR SPEED CONTROL

DIR

S/S

IN +

OSC

S101-4

(REC/PB)

PB

REC

RV601

TAPE SPEED

REC TIME NORMAL

RV602

TAPE SPEED

REC TIME DOUBLE

REC TIME

S903-2 DOUBLE

NORMAL

REC TIME

S903-1

NORMAL

DOUBLE

ON

OFF

FWD

REV

SWITCH

Q703

IN4

IN6

IN8

SYSTEM CONTROL

IC702

20

17

OUT2

OUT1

OUT5

IN7

CONT

CL

VCC

VDD

IN1

18 19

OUT3

OUT4

MOTOR SERVO

IC601

S102-4

(FWD/REV)

FWD

REV PB

REC

S101-3

(REC/PB)

J101

EAR

+3V

S103

(POWER)

-+

DC IN 3V

CN101

PRE / POWER AMP

IC101

T701

VREF

SPEED CONTROL

RV603

D702

Q701

OFF ON

S701

PAUSE

+3V

4

T101 Q111

Q101

+3V

S102-3

(FWD/REV)

Q106

MIC901

Flat Mic

V O R

S901

-

+

-

+

-

S702

(REW / REVIEW)

S703

(DIR)

S704

(FF / CUE)

IN2

IN3

IN5

S102-2

(FWD /REV)

REV FWD

14

ERROR

AMP

04

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

1-672-148- (11)

11

S702

(REW/REVIEW)

04

(FF/CUE)

SPEED CONTROL

S703

(DIR)

S701

ON

OFF

S101

(REC/PB)

PB REC

REC/PB

ERASE

REC/PB

ERASE

( )

S102 (FWD/REV)

REV FWD

DRY BATTERY

SIZE " AA "

(IEC DESIGNATION R6)

2PCS,3V

HRPE901

REC/PB/ERASE

HEAD

1-672-148- (11)

11

TP20

TP30

1

A

B

C

D

E

F

G

H

I

J

234567891011121314

– 13 – – 14 –

TCM-50DV

Q103 D-9

Q104 D-9

Q105 E-10

Q106 H-2

Q107 F-8

Q108 F-8

Q109 F-9

Q110 F-8

Q111 F-1

Q112 G-3

Q301 F-10

Q302 F-10

Q303 F-10

D701 C-1

D702 D-2

IC101 F-9

IC301 F-10

IC501 E-2

IC601 C-8

IC701 C-1

IC702 C-2

PH701 D-1

Q101 H-10

Q102 D-9

• Semiconductor Location

Ref. No. Location Ref. No. Location Ref. No. Location

Q501 E-2

Q601 B-10

Q602 B-10

Q603 B-9

Q604 B-9

Q701 D-2

Q702 D-1

Q703 D-2

Q704 D-9

Q705 C-2

Q706 B-2

Q707 B-2

Q708 D-1

6-2. PRINTED WIRING BOARD — MAIN SECTION —

Note on PrintedWiring Boards:

•X: parts extracted from the component side.

•®: Through hole.

•b: Pattern from the side which enables seeing.

(Page 17)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

TCM-50DV

– 15 – – 16 –

6-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 19 for IC Block Diagrams.

Note on Schematic Diagram:

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•C: panel designation.

•U: B+ Line.

•H: adjustment for repair.

• Power voltage is dc 3 V and fed with regulated dc power

supply from external power voltage jack.

• Voltage is dc with respect to ground under no-signal

(detuned) condition.

no mark : PB

( ) : REC

[ ] : FF/REW

• Voltages are takenwith aVOM(Inputimpedance10 MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Signal path.

E: PB

a: REC

(Page 18)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

04

S903

DOUBLE NORMAL

S902

H L

1

18

S901

ON OFF

1-672-149-

(11)

11

1-672-149-

LED

FLEXIBLE

BOARD

1

(11)

11

1

A

B

C

D

E

F

G

H

I

J

23456

– 17 – – 18 –

TCM-50DV

Note on Schematic Diagram:

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•C: panel designation.

• Signal path.

E: PB

Note on Printed Wiring Boards:

•X: parts extracted from the component side.

•®: Through hole.

•b: Pattern from the side which enables seeing.

6-5. SCHEMATIC DIAGRAM — PANEL SECTION —6-4. PRINTED WIRING BOARD — PANEL SECTION —

(Page 14)

(Page 15)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 19 –

1

13

2

14

3

15

416

5

17

6

18

7

19

8

20

9

10 11

12

PRE DRIVER

DIRECTION

ANTI

LOCKING

PULSE DET

OPERATION LOGIC

OSC

REF VOLTAGE

FOR SPEED CONTROL

BIAS

+

–

CURRENT

DET

TSD

SLEEP

DET

START

DET

FREQ.

CHARC.

ERROR

AMP

FEED

BACK REF

VOLTAGE

VOUT

WOUT

PGND

WB

VB

UB

OSC

COM

GND

RI

UOUT

DR

VCC

LB

FC

OUT

VSP

IN+

VREF

S/S

+

–

+

–

+

–

+

–

21222324252627282930

235

4678910

111 12 13 14 15

16

17

181920

300k

EQ MIC

2.2k

30k

2k

PAUSE

POWER

MIC

VCC

Vref R/P

R, F

GVN

VOX

SPEED

ALC

VOX

20k

REC

12

PRE GND

EQ IN

MIC IN

Vref OUT

MIC VCC

R, F OUT

LED DRIVE

R/P SW

PAUSE

P/R MUTE

GVN CONT

GVN Vref

Vs

GVN GND

GVN OUT

PRE NF

PRE OUT

REG IN

REG OUT

ALC CONT

VOX CONT

VOX DELAY

GNV SPEED UP

AUT STOP CONT

AUT STOP IN

PWR IN

PWR OUT1

PWR GND

PWR OUT2

Vcc

1

2

3

4

8

7

6

5

GND

AMP OUT

GAIN CONT

INPUT VCC

OUTPUT2

OUTPUT1

RECOVERY

TIME CAP

1234

5

6

7

8

+

–

+

–

VOLTAGE UP

CIRCUIT

VREF

NC

VCC

VS

HYS

NC

CT

GND

OUT

• IC Block Diagrams

IC101 LA4168ML

IC501 NJM2072M

IC601 LB1877V

IC301 MM1251M

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 20 –

6-6. IC PIN DESCRIPTION

• IC702 TB2004FN-020 (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 GND — GND

2 OSC — For system clock generation (fosc=3.2 kHz)

3 CL I RESET input

4 IN1 I Pause ON/OFF by PAUSE SW and VOR. “L” : ON, “H” : OFF

5 IN2 I FWD reset by cassette cover open-close. “L” : ON, “H” : OFF

6 IN3 I Direction “L” : ON, “H” : OFF

7 IN4 I REC/PB switch “L” : REC, “H” : PB

8 IN5 I FF/REW “L” : ON, “H” : OFF

9 IN6 I POWER ON/OFF “L” : ON, “H” : OFF

10 IN7 I Photo reflector pulse input for tape end detection.

11 IN8 I FWD/REV switch “L” : FWD, “H” : REV

12 I/O1 — Not used.

13 I/O2 — Not used.

14 OUT8 — Not used.

15 OUT7 — Not used.

16 OUT6 — Not used.

17 OUT5 O LED ON/OFF “L” : ON, “H” : OFF

18 OUT4 O Audio mute “L” : ON, “H” : OFF

19 OUT3 O Motor brake “L” : ON, “H” : OFF

20 OUT2 O Motor direction “L” : FWD, “H” : REV

21 OUT1 O Motor ON/OFF “L” : ON, “H” : OFF

22 VDD — Power supply for CMOS.

23 CONT O Boosting circuit control output

24 VCC — Power supply for bipolar.

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 21 –

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark

SECTION 7

EXPLODED VIEWS

NOTE:

• The mechanical parts with no reference

number in the exploded views are not supplied.

• Items marked “*” are not stocked since

they are seldom required for routine service.

Some delay should be anticipated

when ordering these items.

• -XX and -X mean standardized parts, so

they may have some difference from the

original one.

• Color Indication of Appearance Parts

Example :

KNOB, BALANCE (WHITE) ... (RED)

Parts Color Cabinet’s Color

7-1. CASE SECTION

N

• Accessories and packing materials are

given in the last of this parts list.

11

1

2

28

34

56

7

8

9

10

12 13

14

15

16

17

18

19

20

21

22

27

23

24

3

26

18

25

MT-50-30

1 X-3376-765-1 CABINET (FRONT) ASSY

2 4-969-980-21 SCREW (IB LOCK)

3 3-315-989-11 SCREW, ORNAMENTAL

4 3-925-231-01 REFLECTOR

5 3-035-304-11 CUSHION

6 3-676-387-00 POLY-SLIDER (DIA.1.6)

7 3-315-384-31 WASHER, STOPPER

*8 X-3370-480-1 TOGGLE ASSY

9 3-311-772-11 SHAFT (A), STOPPER

10 3-032-431-01 KNOB (PAUSE)

11 3-032-432-01 KNOB (DIR)

12 X-3376-766-1 LEVER ASSY, COVERING INDICATION

13 3-328-319-01 STRAP, HAND

14 9-911-815-01 CUSHION

15 3-032-434-01 LID, BATTERY CASE

16 3-032-441-01 SHEET (PICK)

17 3-032-437-11 CABINET (REAR)

18 3-318-203-92 SCREW (B1.7X9), TAPPING

19 3-032-436-01 FOOT (B), RUBBER

20 3-032-435-01 FOOT (A), RUBBER

21 3-925-229-01 TERMINAL, PLUS

22 3-345-648-01 SCREW (M1.4), TOOTHED LOCK

23 A-3021-163-A MAIN BOARD, COMPLETE

24 3-925-230-01 SPRING, BATTERY COIL

25 3-035-304-01 CUSHION

26 3-704-245-42 SCREW (1.4)

27 4-017-441-01 CUSHION (B)

28 3-545-710-01 CUSHION

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 22 –

7-2. PANAL SECTION

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

51

52

53

54

55

56

57

58

59

56

61

62

63

60

64

65

66

67

57

69

70

68

73

74

78

72

75

76

77

54

75

71

MIC901

SP901

51 3-032-423-01 SHEET (WINDOW), ADHESIVE

52 3-032-421-11 WINDOW (CASSETTE)

53 3-032-417-11 PANEL (CASSETTE LID)

54 3-389-523-22 SCREW (IB LOCK)

55 3-032-422-01 SHEET (FRAME), ADHESIVE

56 3-035-251-01 SHEET (FRAME B), ADHESIVE

57 3-035-729-01 CUSHION

58 3-032-427-01 GUIDE, LIGHT

59 3-032-946-01 SHEET (LIGHT GUIDE)

60 3-035-730-01 SHEET

61 3-032-422-01 SHEET (FRAME), ADHESIVE

62 3-032-428-01 KNOB (REC TIME)

63 3-032-420-01 KNOB (V•O•R)

64 3-032-419-01 KNOB (MIC SENS)

65 3-032-418-01 FRAME (CASSETTE LID)

66 3-032-439-01 CUSHION (FRAME)

67 4-017-491-01 CUSHION (B)

68 3-032-424-01 PANEL (MICROPHONE)

*69 1-672-149-11 LED BOARD

70 3-035-305-01 CUSHION

71 1-672-139-11 LED FLEXIBLE BOARD

72 3-032-414-01 CUSHION (MICROPHONE)

73 3-032-425-01 HOLDER (MICROPHONE)

74 3-032-415-01 RETAINER (MICROPHONE)

75 3-318-382-01 SCREW (1.7X3), TAPPING

*76 3-032-430-01 HOLDER (CASSETTE)

77 4-017-441-01 CUSHION (B)

78 3-032-416-01 GROUND, COMPRESSION SPRING (M)

MIC901 1-542-298-11 MICROPHONE, ELECTRET CONDENSER

(Flat Mic)

SP901 1-529-188-11 SPEAKER (3.6cm)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 23 –

7-3. MECHANISM DECK SECTION-1

(MT-50-30)

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

101

102

103

104

105

106

107

108

109

110

111

112

113

114

116

117

118

119

120

121

122 123

124

125

126

127

128

129

119

112

122

115

112

A

not supplied

M901

HRPE901

(see page 24.)

101 3-925-247-11 BUTTON, FF/CUE

102 3-925-246-11 BUTTON, REW/REVIEW

103 3-925-245-11 BUTTON, PLAY

104 3-032-787-01 BUTTON, REC

105 3-925-248-11 BUTTON, STOP

106 3-924-596-01 SPRING (PINCH-R), TORSION

107 X-3370-380-1 ARM (PINCH-R) ASSY

108 3-924-595-01 SPRING (PINCH-N), TORSION

109 X-3370-379-1 ARM (PINCH-N) ASSY

*110 3-924-572-01 LEVER (DIR)

*111 3-924-575-01 LEVER (DIR-M)

112 3-924-601-01 SPRING, TENSION

*113 3-924-534-01 LEVER (C/R)

114 X-3370-378-1 LEVER (HEAD) ASSY

115 4-017-441-01 CUSHION (B)

116 3-938-133-01 SCREW

117 3-365-630-02 SCREW (M1.4)

*118 3-924-535-01 LEVER (FR)

119 X-3370-375-1 TABLE ASSY, REEL

120 3-018-121-01 SPRING (B.T), COMPRESSION

*121 3-924-536-01 LEVER (OFF)

122 3-321-483-11 RING, RETAINING

123 3-924-569-14 PAD (S-OFF)

124 3-924-602-01 SPRING, TENSION

*125 3-924-538-12 LEVER (S-OFF)

126 1-657-172-11 MOTOR FLEXIBLE BOARD

127 3-704-245-42 SCREW (1.4)

128 3-035-367-01 BELT (MOTOR)

129 3-924-577-01 PULLEY (COUNTER)

HRPE9011-500-590-11 HEAD, MAGNETIC (REC/PB/ERASE)

M901 1-698-804-21 MOTOR,DC(includingPULLEY)(CAPSTAN/REEL)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

– 24 –

7-4. MECHANISM DECK SECTION-2

(MT-50-30)

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

151 X-3370-373-1 CHASSIS ASSY

*152 3-924-537-01 LEVER (F/R)

153 3-924-605-01 SPRING (FF), TENSION

154 3-924-593-01 BELT (FLYWHEEL)

155 3-701-437-51 WASHER

156 X-3377-138-1 FLYWHEEL ASSY

157 3-924-602-01 SPRING, TENSION

158 3-924-558-01 PULLEY (T)

159 3-321-483-11 RING, RETAINING

160 3-924-548-01 ARM (T-N)

161 3-924-557-01 GEAR (T)

162 3-924-549-01 ARM (T-R)

*163 3-924-539-01 LEVER (REW-F)

*164 3-924-540-01 LEVER (REW-R)

165 3-924-603-01 SPRING (F/R), TENSION

166 3-924-597-01 SPRING (F/R), TORSION

*167 3-924-568-01 LEVER (FF)

*168 3-924-567-01 LEVER (REW)

*169 3-924-566-01 LEVER (STOP)

*170 X-3370-377-1 LEVER (REC) ASSY

*171 3-924-565-01 LEVER (PLAY)

172 3-924-598-01 SPRING (P/S), TORSION

173 3-924-604-01 SPRING (PLAY), TENSION

*174 3-924-547-01 ARM (PLAY-SUB)

*175 3-924-545-01 LEVER (LOCK)

*176 3-924-546-01 LEVER (SW)

177 3-924-606-01 SPRING (LOCK), TENSION

178 3-924-725-01 REFLECTOR

179 3-924-579-01 GEAR (REF)

180 3-348-993-01 WASHER

181 X-3370-376-1 LEVER (CENTER) ASSY

182 3-924-556-01 GEAR (REW)

183 3-924-562-01 GEAR (FF)

184 3-924-560-01 GEAR (REEL)

185 3-924-600-01 SPRING (REC), TENSION

186 3-032-620-01 BELT (COUNTER)

187 3-704-245-42 SCREW (1.4)

188 3-032-438-01 BRACKET (COUNTER)

189 1-548-582-11 COUNTER, TAPE (SMALL TYPE)

*190 3-924-574-01 LEVER (PAUSE)

191 3-924-607-01 SPRING (ARM-T), TENSION

192 3-321-483-01 RING, RETAINING

193 3-305-925-00 WASHER

151

152

153

154

155

156

157

158 159

160

161 162

163

164

165

166

167

168 169 170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

159

158

161

193

192

159

183

184

not supplied

not

supplied

(including A)

(see page 23.)

159

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Sony Pressman TCM-50DV User manual

Popular Cassette Player manuals by other brands