Sony TCM-500DV Bedienungsanleitung

SERVICE MANUAL

CASSETTE-CORDER

US Model

Canadian Model

AEP Model

E Model

Tourist Model

Model Name Using Similar Mechanism New

Tape Transport Mechanism Type MT-500-175

SPECIFICATIONS

TCM-500DV

Ver 1.2 2004. 04

Recording system

2-track 1 channel monaural

Tape speed

4.8 cm/s or 2.4 cm/s

Frequency range

350 - 6 300 Hz using nomal (TYPE I) cassette (with REC

TIME/PLAY MODE switch at “NORMAL”)

Speaker Approx. 3.6 cm (1 7/16 in.) dia.

Power output

450 mW + 450 mW (at 10 % harmonic distortion)

Input Microphone input jack (minijack)

sensitivity 0.2 mV for 3kΩ or lower impedance microphone

Output Earphone jack (minijack) for 8 -300Ωearphone

Variable range of the tape speed

From approx. +30% to –15% (with REC TIME/PLAY

MODE switch at “NORMAL”)

Power requirements

• 3 V DC, batteries AA(R6) x 2

• External DC 3 V power sources

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

Approx. 87.6 x 113.0 x 37.1 mm

(3 1/2x 4 1/2x 1 1/2in.)

Mass (main unit only)

Approx. 215 g (7.6 oz.)

Design and specifications are subject to change without notice.

9-877-111-03

2004D02-1

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

TCM-500DV

TABLE OF CONTENTS

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

2. SERVICING NOTES ................................................ 2

3. DISASSEMBLY ......................................................... 3

3-1. Cabinet Rear Assy (500), Lid Assy (500),

Cassette .................................................................. 3

3-2. MAIN Board .......................................................... 4

3-3. Mechanism Deck ................................................... 4

3-4. Head, Magnetic (Rec/PB/Erase) (HRPE901),

Belt (AR), Capstan/Reel (M601) .......................... 5

3-5. LED Board ............................................................. 5

3-6. SP Board ................................................................ 6

4. MECHANICAL ADJUSTMENTS ....................... 7

5. ELECTRICAL ADJUSTMENTS ......................... 7

6. DIAGRAMS

6-1. Block Diagrams ...................................................... 8

6-2. Printed Wiring Board –MAIN Board (Side A) – ... 9

6-3. Printed Wiring Board –MAIN Board (Side B) –... 10

6-4. Schematic Diagram –MAIN Board (1/2) – ........... 11

6-5. Schematic Diagram –MAIN Board (2/2) – ........... 12

6-6. Printed Wiring Board –LED, SP Board – .............. 13

6-7. IC BLOCK DIAGRAMS ....................................... 14

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

REC TIME/PLAY MOD

VOR

TAPE COUNTER

REC

STOP

REW/REVIEW

FF/CUE

VOL

Flat Mic

Microphone affleurant

PAUSE

PLAY

DIR

REC, BATT,

lamps

Témoins REC, BATT,

MIC (PLUG IN POWER) EAR

SPEED CONTROL

SECTION 2

SERVICING NOTES

In this set, the S102 (POWER) detects REC/PLAYBACK on.

It is mounted on the MAIN board, and therefore the REC/PLAYBACK on cannot be detected with the MAIN board removed.

When making an operation check and voltage check of mechnical deck with the MAIN board removed, fix the S102 at turn on.

S102

–MAIN BOARD (side A) – –MAIN BOARD (side B) –

SL101

7. EXPLODED VIEWS ................................................ 15

7-1. Cabinet Section ...................................................... 15

7-2. Cassette Holder Section ........................................ 16

7-3. Mechanism Deck Section-1 (MT-500-175) .......... 17

7-4. Mechanism Deck Section-2 (MT-500-175) .......... 18

8. ELECTRICAL PARTS LIST ............................... 19

Also, soldering the lands SL101 bridge makes S102 to turn on.

This section is extracted from

instruction manual.

TCM-500DV

3-1.CABINET REAR ASSY (500), "LID ASSY (500), CASSETTE"

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

SECTION 3

DISASSEMBLY

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

Cabinet (Front) assy (500) MAIN board

Lid assy (500), Casette

Head, Magnetic (Rec/Pb/Erase) (HRPE901), Belt (AR),

Capstan/Reel Motor (M601)

LED board

SP board

Set

Cabinet Rear assy (500)

Mechanism Deck

Lid assy (500), cassette

Flexible doard (CN201)

Cabinet (front) assy (500)

Screws (B1.7 x 9)

Screws (1.7 x 16)

Claws

Strap, hand

Foot (B)

Cabinet rear assy (500)

Screw (B1.7 x 3)

Flexible board (CN401)

Returning lever

Note on Assembling "Lid Assy (500),

Cassette"

On assembling the lid assy (500),

cassette, insert the one side of the l

id spring to the hole on the lid assy,

and fit the other side to the cabinet

(front) assy (500) as shown in the

figure.

Remove the "lid assy (500),

cassette" while pushing the

pivot with a phillips-head

screwdriver or the like.

Remove the returning lever from the

pivot of the "lid assy (500), cassette"

while inserting a screwdriver between

the "lid assy (500), cassette" and the

returning lever.

Remove the "lid assy (500), cassette"

while pushing the pivot with a phillips-

head screwdriver or the like.

TCM-500DV

3-3. MECHANISM DECK

Screws (M1.4 x 2.5)

Mechanism deck (MT-500-175

)

Jack (600)

Belt (counter)

Screw (M1.4 x 2.5)

Cabinet (front) assy (500)

3-2. MAIN BOARD

Cabinet (front) assy (500)

Orange

Black

Red

White

Remove four solders of capstan/reel moto

Screws (M1.4)

MAIN board

Flexible board (CN101)

TCM-500DV

3-4.HEAD, MAGNETIC (REC/PB/ERASE) (HRPE901), BELT (AR), CAPSTAN/REEL MOTOR (M601)

3Belt (AR)

How to attach a belt

4Screw (M1.4)

5Capstan/reel motor (M601)

2Head, magnetic (rec/pb/erase) (HRPE901)

1Screw (M1.4)

Lid assy (500) cassette

Flexible board (CN402)

LED board

Remove two solders of mic

Screws

Sprng (500), ground

Mic 901

Screws

Spring (earth)

3-5.LED BOARD

TCM-500DV

3-6. SP BOARD

Screw

SP board

Claws

Claw

Knob (speed) (600)

Cabinet rear assy (500)

Remove a claw of knob

(speed) (600) by a screwdriver

Flexible board (CN202)

Remove four solders of speaker leads

TCM-500DV

SECTION 4

MECHANICAL ADJUSTMENTS

TapeTension Measurement

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 demag

netizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. The adjustments should be performed with the rated power supply

voltage (3 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)

FWD

Back Tension 0.05 – 0.49 mN•m

REV (0.5– 5 g•cm)

REV (0.007 – 0.069 oz•inch)

Back Tension

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 5

ELECTRICAL ADJUSTMENTS

Tape Speed Adjustment

Mode: playback

Procedure:

1. Set [REC TIME] switch (S401) to NORMAL (4.8 cm/s) posi-

tion, and playback the tape (WS-48A) .

2. Adjust RV602 so that frequency counter reading becomes 3,010

Hz.

3. Set [REC TIME] switch (S401) to DOUBLE (2.4 cm/s) posi-

tion.

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

just RV601 so that frequency counter reading becomes 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: 3 V (DC)

•Switch and control position

VOL contorl (RV101) : mechanical center

REC SPEED switch (S401) : normal (4.8cm/s)

PAUSE switch (S601) : OFF

SPEED CONTROL (RV201) : center click

VOR switch (S402) : OFF

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) 16 Ω

EAR jack (J102)

set +

–

TestTape

Regulation Level

input level Mic –60dBs

output level earphone 16Ω, –20dBs

Adjustment Location:

– MAIN BOARD (Conductor Side) –

IC601

RV602

RV601

Tape Speed Adjustmen

Tape Speed Adjustment

(Normal Speed)

(Double Speed)

Ver 1.2

TCM-500DV

6-1. BLOCK DIAGRAMS

S101 (4/6)

REC

S101 (2/6)

REC

S101(6/6)

REC

S101 (1/6)

REC

Q801

REC B+

S103

FWD

REV

RV101

wVOL

S101(3/6)

REC

P.B+

B+ 3V BATT B+

S102

(POWER)

VOLTAGE DET

IC401

MIC901

FLAT MIC

J101

MIC

(PLUGIN POWER)

15 14

MIC/EARPHONE AMP

IC101

LPF

IC301

POWER AMP

IC103

PRE

DRIVE

OUTPUT

SOFT

SWITCH

WAVEFORM

DETECT

SPEED

DETECT

BIAS

OSC

CURRENT

DETECT

MOTOR

BRAKE

Q602

MOTOR

BRAKE

Q604

INITIAL

SWITCH

Q603,605

LED

DRIVE

Q404

B+

SWITCH

Q403,405

LED

DRIVER

Q401

ATT

ALC

ATT

REC B+

SWITCH

Q705

INITIAL

DETECT

Q709,710

MUTE

Q701

MUTE DRIVE

Q703

1 4 5

J102

EAR

SP902

SPEAKER

(R-CH)

SP901

SPEAKER

(L-CH)

B+3V

L-CH

-1

-2

-3

FWD

REV

R-CH

L-CH

R-CH

HRPE901

(REC/PB/ERASE HEAD)

S401 (2/2)

REC TIME/PLAY MODE

NORMAL

DOUBLE

V•O•R

LEVEL

DETECT

IC501

16 17

SERVO

CONTROL

IC601

D801

S402

V·O·R

OFF

15 IN+

THP601

S401(1/2)

Q702, 704

MUTE OR

Q201

VDD

BATT B+

IN(A) +OUT(A)

-OUT(A)

+OUT(B)

-OUT(B)

IN(B)

SHUT

DOWN

VREF

UOUT

VOUT

WOUT

S/S

VSP

OSC

COM

OUT

M601

CAPSTAN/REEL

MOTOR

BATT B+

Q601

INVERTER

Q402(2/2)

LED ON/OFF

Q402(1/2)

LED ON/OFF

Q708

B+3V

REC B+

P.B+

L401

S101(5/6)

REC

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

2PCS, 3V

DC IN 3V

J103

S104

PAUSE .

OFF

REC

BATT

D402

D401

D403

RV201

SPEED CONTROL

REC TIME/PLAY MODE

DOUBLE

NORMAL

RV601

TAPE SPEED 2.4cm

RV602

TAPE SPEED 4.8cm

REC B+

Q202

MUTE

SWITCH

417

INITIAL

DETECT

Q707

POWER

DETECT

Q706

•Signal path.

E: PB

a: REC

SECTION 6

DIAGRAMS

TCM-500DV

6-2. PRINTED WIRING BOARD –MAIN BOARD (SIDE A)–

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: Parts on the pattern face side seen

(Side B) from the pattern face are indicated.

Pattern face side: Parts on the parts face side seen

(Side A) from the parts face are indicated.

C138

S102

(POWER)

(11)

1-687-887-

(SIDE A)

MAIN BOARD

23 4 5 6 7 8

TCM-500DV

10 10

R709

R706

R126

R125

R104

R129

R703

R127

R119

R105

R103

R135

R101

R132

S101

-6 -5 -4

-3 -2 -1

R102

C501

R111

R128 R130

C702

C118

C131

C137

C115

R813

R811

R131

C128

C127

C126

R123

C132

C117

C110

C106

C105

C119 C116

C113

C129

C104

C103

C101

C102

C703

C121

C120

C124

C125

D101

D102

D801

D701

R206

R210

R211

R810

R806

R805

R710

R711

R203

R208

R215

SL201

R216

R401

C134

C207

CN201

R503

R506

R505

R502

C503

R504

R501

C402

C505

C506

C502

C504

R213

R310 R309

R209

R116

R118

R117

C106

C109

R312

C308

R301

C303

C206

R702

R121

R707

S103

R122

R133 R114

R112

R110

R308

R311

R207

R205

R212

C111

C107

C114

C701

C123

C122

C136

C135

C305

C304

C309

C133

C202

C201 C203

C130

Q603

Q601

Q706

Q405 Q403

Q401

Q402

Q404

J103

ECB

Q708

Q605

Q602

Q604

ECB

THP601

RV602

RV601

IC601

IC401

20 11

IC103

IC301

S104

PAUSE

Q703

Q707

Q709

Q710

ECB ECB ECB ECB

Q704

Q202 Q201

Q702

Q705

Q701

Q801

ECB

ECB ECB

ECB

IC101

IC501

CN401

CN101

RV101

J101

J102

DC IN 3V

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

2PCS, 3V

R611

R616

R612

R412

R613

R618

R617

R609

R606

R614

R411

R607

C704

R708

R713

R712

R704

R610

R603

R705

C606

C608

C609

C607

C604

C610

C601

C405 C602

C605

C603

R608

R414

R413

R416

R415

R601

R602

R605

R615

R406

R403

R405

E B C

C B E

R402

R408

C403 R404

R409

R407 C404

R420

R419

R417

R418

L401 W

COM

M601

CAPSTAN/REEL

MOTOR

(SIDE B)

MAIN BOARD

(11)

1-687-887-

REC

115

FWD tREV

TO HRPE901

(REC/PB/ERASE HEAD)

ALED

BOARD

(Page 13)

BOARD

(Page 13)

EAR

MIC

(PLUGIN POWER)

VOL

BCE

23 4 5 6 7 89

6-3. PRINTED WIRING BOARD –MAIN BOARD (SIDE B)–

D101 B-5

D102 D-2

D701 B-2

D801 C-3

IC101 B-3

IC103 D-5

IC301 C-5

IC401 D-7

IC501 E-3

IC601 C-8

Q201 D-5

Q202 D-5

Q401 C-6

Q402 D-6

Q403 C-6

Q404 D-7

Q405 C-6

Q601 C-7

Q602 C-8

Q603 C-7

Q604 C-8

Q605 C-8

Q701 C-3

Q702 C-5

Q703 B-2

Q704 C-4

Q705 D-3

Q706 B-6

Q707 B-3

Q708 B-7

Q709 B-3

Q710 B-3

Q801 C-3

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: Parts on the pattern face side seen

(Side B) from the pattern face are indicated.

Pattern face side: Parts on the parts face side seen

(Side A) from the parts face are indicated.

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