Sony TMR-RF960R Manual de usuario

TMR-RF960R

US Model

Canadian Model

SERVICE MANUAL

TRANSMITTER

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

9-877-526-01

2004B02-1

SPECIFICATIONS

Ver 1.0 2004. 02

TMR-RF960R is the component model block one in the MDR-RF960RK

or MDR-RF920RK.

MDR-RF920RK MDR-RF960RK

Wireless Stereo Headphones MDR-RF920R MDR-RF960R

Transmitter TMR-RF960R TMR-RF960R

COMPONENT MODEL NAME FOR MDR-RF920RK/

MDR-RF960RK

General

Carrier frequency 913.5 – 914.5 MHz

Channel Ch1, Ch2, Ch3

Modulation FM stereo

Frequency response MDR-RF920R : 20 – 20,000 Hz

MDR-RF960R : 10 – 22,000 Hz

Transmitter

Power source DC 9 V: supplied AC power adaptor

Audio input phono jacks/stereo mini jack

Dimensions Approx. 133 x 124 x 136 mm

(5 1/4x 5 x 5 3/8in.)

(w/h/d)

Mass Approx. 195 g (7 oz.)

TMR-RF960R SECTION 1

GENERAL

1. Check the area of your repair for unsoldered or poorly-sol

deredconnections. Check the entire board surface for solder

splashes and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly

transistors, that were installed during a previous repair.

Point them out to the customer and recommend their

replacement.

4. Lookforpartswhich, throughfunctioning, showobvious signs

of deterioration. Point them out to the customer and

recommend their replacement.

SAFETY CHECK-OUT

5. Check the B+ voltage to see it is at the values specified.

6. 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

TABLE OF CONTENTS

Specifications ............................................................................ 1

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

2. DISASSEMBLY

2-1. Upper Cabinet Assy ............................................... 3

2-2. TX-BASE Board .................................................... 3

3. ELECTRICAL ADJUSTMENTS .......................... 4

4. DIAGRAMS

4-1. Block Diagrams...................................................... 5

4-2. Schematic Diagram – TX-BASE Board – ............. 6

4-3. Printed Wiring Board – TX-BASE Board –........... 7

4-4. Schematic Diagram – TX-VCO Board – ............... 8

4-5. Printed Wiring Board – TX-VCO Board – ............ 8

5. EXPLODEDVIEWS .................................................. 10

6. ELECTRICAL PARTS LIST...............................11

This section is extracted

from instruction manual.

INPUT

DC IN 9V

NOISE FILTER

OFF

CHANNEL 1

Setting up the

transmitter

Connect the transmitter to audio/

video equipment.

Select one of the hookups below

depending on the jack type:

ATo connect to a headphones jack

Transmitter

WALKMAN*,

TV, VCR, etc.

to INPUT B

jacks

Unimatch plug

adaptor

(supplied)

to headphones

jack (stereo

phone jack)

Connecting cord

(supplied)

to headphones

jack (stereo

mini jack)

Left channel

(white)

Right channel

(red)

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

TMR-RF960R

SECTION 2

DISASSEMBLY

2-2. TX-BASE BOARD

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

2-1. UPPER CABINET ASSY

protection sheet

upper cabinet ass

screw (DIA. 2)

four screws (DIA. 2)

cabinet (lower) assy

two screws (DIA. 2)

TX-BASE board

cabinet (lower) assy

TMR-RF960R SECTION 3

ELECTRICAL ADJUSTMENTS

Setting :

AF signal

generator

Telescopic

antenna

8 cm

L-CH (J402)

TMR-RF960R

set

TMR-RF960R

set

Frequency counter

Transmission Frequency Check

1. Set the noise filter SW to OFF.

2. Input a signal of 1 kHz 40 mVrms to only the L-CH (J402).

3. Connect a telescopic antenna to the frequency counter input

and extend the antenna to a length of approximately 8 cm.

4. Place TX-BASE board close to the frequency counter, then

measure the frequencies of CH1, CH2 and CH3 and make

sure the values are as follows:

CH1 : 913.5 MHz ±200 kHz

CH2 : 914.0 MHz ±200 kHz

CH3 : 914.5 MHz ±200 kHz

When the frequency is not satisfied the specified value, set the

channelswitch (S402)to CH2,then adjustthe valueof thefrequency

counter to 914.0 MHz by CT501 in the TX-VCO BLOCK.

Standard value :913.9MHz to 914.1MHz

When completedwithreplacement, recheckthe frequenciesof CH1,

CH2 and CH3.

Charge Current Check

1. Connect the ammmeter 3and #probes to TP8 and 9.

2. The green LED (on charging) turns on.

Make sure the reading on the current meter becomes to the

standard value.

Standard value: 45±5mA

TP8 TP9

CURRENT METER

TX-BASE BOARD (Conductor side)

Pilot signal Modulation Check and Adjustment

1. Set the channel to CH2.

2. An electric wave is output for 5 or 10 minutes when OFF to

ON a power supply (LED (POWER) will ON).

3. Measure the center terminal of RV401 using an digital volt-

meter (AC range) and make sure the value is 2.65 to

2.75mVrms.

If the measured value is other than the specified value, adjust

to 2.65 to 2.75mVrms by turning the RV401 on the TX-BASE

board.

Connection points and Adjustment Location :

RV401

TX-VCO BLOCK

(R-CH) (L-CH) CHANNNEL

3CH-2CH-1CH

RV401: Modulation adjustment

CT501:Transmission

frequency adjustment

TX-BASE BOARD (Component side)

S402S401

J402

321

R468 R466

C488

C455

C454

C457

R469

R460

R464

R402

C480 R405

R472

IC404

IC403

C408

D403

X401

C458

RV401

JW416

JW401

IC402

Q404

C450

1-861-437-

digtal voltmeter

(AC range)

TX-BASE BOARD (Conductor side)

TMR-RF960R

4-1. BLOCK DIAGRAM

J401

S401

NOISE FILTER

COMPARATOR

(POWER ON/OFF)

ALC

AMP

CH2

AMP BUFFER

AMP

Q401

RECT

D404,405

INPUT

DET

DIVIDER

(19K)

BUFFER

OSC

AMP

TIME

DEVISION

MPX

J402

OFF

R R-CH

R-CH

14 9

CH1

AMP

X401

38kHz

RV401

IC401

LPF

Q408

IC403

STEREO MPX

+5V

REG

SWITCH

Q404

IC402

ANT401

D401

D402

(POWER)

(CHARGE)

INPUT

TX-BASE BOARD

MOD

IN ANT

B+

TX-VCO BLOCK

PILOT SIGNAL

MODULATION

REGULATOR

RIPPLE

FILTER

Q402

Q406,407

CHARGE

DET

S402

CHANNEL

B+

BATTERY

CHARGE

TERMINAL

(TO MDR-RF920R/RF960R)

–

J403

DC IN 9V

CHARGE

CURRENT

LIMIT

Q405,410

R-CH

Q403

COMPENSATION

MODULATOR

Q501,502

RF AMP

Q503

X501

1080MHz

IC405(2/2)

IC405(1/2)

SYSTEM

CONTROL

IC404

D407

CT501

TRANSMISSION

FREQUENCY

CT501

•R-ch is omitted due to same as L-ch

•Signal path.

L: AUDIO

F: FM

SECTION 4

DIAGRAMS

TMR-RF960R

4-2. SCHEMATIC DIAGRAM –TX-BASE BAORD –

J403

D404

X401

C455

C454

C453

R489

C462

R477

R476

R475

R479

C475

C401

R459

R458

R457

R456

R450

C442 C433

R443

R444

C432

R445

C434

C435 R470

C444

C443

R471 C445

R488

R487

C449

R436

R435

R449

R448

R447

R446

R460

C458 R469

C457

R482

JW411

JW418 JW412

R474

R491

JC403

R490

JW406

R441

R442

JW413

D410 C476

R486

R483

C474

R480 R481

C477

R484

R485

Q407

Q406

R492

Q405

R498

Q410

R499

D407

C482

R496

R494

R497

R495

R493

D409

JW415

JW414

JW405

C466

C427

R431

R432

C428

R433

C430

C429 C412

D405

C411

R438 C440 R461 R452

R434

R455

R454

R453

R463

C439

R451

JW402

JC413

R437

JC414

Q402

Q403

Q404

C470

C468

JW401

Q408

Q401

R462

R440

C465

R468

R467

C488

R473

R466

JC405

C406

R426

R427

C407

R425

R428

C422

C423

C441

C421

JW417

R424

C431

R429

R423

C417

R421

R422

C416

JW409

R403

R413

S401

R411 R408

R418

R401

JW408

C413

C403

R417

R407

R416

R404

R406

R414

JW404

L410

C490

C489

JC404

C446

C437

R430

C426

C425

JW410

JW407

R464 JW403

JC402

C484

C481

RV401

ANT401

D401

J402

J401

S402

D403

C480

C450

IC401

IC402

IC405

R478

R472

IC403

C408 R405

R402

D402

IC404

Q409

JW416

TP8

TP9

1SS133T

38kHz

10p

100p

50V

22k

100p

1.2k

2.2k

47k

220

16V

0.1

100

4.7k

5.6k

1.5k

100k

0.0022 0.1

10k

0.0022 100k

0.01

680p 1k

680p

0.01

1k 0.1

4.7k

0.1

4.7k

100

4.7k

5.6k

1.5k

5.6k

50V

120k

330p

22k

10k

680

220

680

MTZJ4.3B-T77 220

16V

22k

33p

15k 22k

22k

DTC144EKA

DTA144VKA

47k

2SB1424

22k

DTC144EKA

4.7k

1SS133T

0.1

470

560

470

560

MTZJ-T-77-5.6B

0.01

4.7k

2.2M

100p

22k

4.7

50V

100p 100p

1SS133T

100p

220k

50V 56k 150k

220k

68k

100k

33k

0.1

100k

22k

2SC2412K

REGULATOR

RIPPLE

FILTER

DTA124KA

COMPENSATION

KTA1266GA

SWITCH

50V

0.1

2SC2412K

LPF

2SC2712L

AMP

0.001

18k

4.7k

0.01

1.2k

22k

0.022

3.3k

220

2.2

50V

100k

680

220

16V

100p

50V

3.3M

50V

10k

220

2.2

50V

100k

3.3k

0.022

33k 2.2k

2.2k

33k

0.001

33k

AIR 1.5T

50V

10k

0.01

0.022

1k 0

10p

33p

4.7k

SLR342VC3F

10EDB40

0.01

2.2

50V

BA3308F-E2

ALC AMP

KIA78S05P-TP

+5V REG.

BA10393F-E2

18k

NJM2035M(TE2)

STEREO MPX

1470

470

SLR342MC3F

M34580M2

-084FP-T3

2SC2412K

LPF

OFF

CHARGE

TERMINAL

DC IN 9V

SYSTEM

CONTROL

INPUT DET,

COMPARATOR

CHANNEL

PILOT SIGNAL

MODULATION

(TO MDR-RF920R

/MDR-RF960R)

BATTERY

ANT

SIG

RV401

TMR-RF960R

4-3. PRINTED WIRING BOARD –TX-BASE BAORD –

ANT401

R407

R418

C403

C413

R413

R452

R451

R403

C468

321

R455

JC402

R468 R466

C488

R486

R485

R484

R434

C455

C454

C462

R416

C457

R469

R460

R464

R483

R481

R480

C477

C474

R450

R448

R458

R449

R443

R445

R459

R457

R456

R444

C433

C442

C432

R446

R447

R470

R493

R473

R442

R498

R441

R490

Q408

R494

R495

R496

R497

Q405

Q406

Q407

R492

R491

R406

R499

R417

C481

TP8 TP9

C482

Q410

R474

R404

R402

R414

R489

R411

R401

R488 R487

C480

R408

R437

C466

R436

R435

C401

R427

C423

R421

R423

IC401

R424

R425

R422

R426

C406

C416

C429

R462

R405

Q401

C444

R472

Q409

C443

C412

C435

R453

R454

R471

C465

IC405

R467

R463

C427

R431

R429

R432

C426

JC403

R433

IC404

R461

R430

Q402

R438

R428

C411

C425

IC403

R440

C439

C445

C434

C449

C428

C408

R479

Q403

R476

R477 R478

R475

JC405

JC413

JC414

R482

JC404

C489

C490

C484

D403

S402 S402

X401

C453

J403

C458

C422

JW409

JW404

RV401

JW413

D410

JW411

C475

C470

D401

D402

D407

D409

JW406

S401

J401

J402

C437

JW414

JW416

JW401

JW410

JW417

C407

C441

JW407

JW408

C421

C431

C417

C476

JW415

IC402

C440

C430

JW405

Q404

JW412

D404

D405

C450

JW402 JW403

JW418

C446

CHANNEL

INPUT

NOISE FILTER

DC IN 9V

OFF

POWER

CHG

-1 -2

BOARDTX-BASE

(11)

1-861-437-

TX-VCO

BOARD

(Page 8)

ANT SIG

L410

23 4 5 6 7 8

BATTERY CHARGE TERMINAL

(TO MDR-RF920R/RF960R)

Ref. No. Location

D401 E-2

D402 E-1

D403 F-7

D404 C-4

D405 C-4

D407 F-3

D409 D-3

D410 C-3

IC401 A-6

IC402 F-5

IC403 E-6

IC404 E-5

IC405 C-5

Q401

Q402 E-3

Q403 C-4

Q404 F-6

Q405 F-2

Q406 F-2

Q407 D-3

Q408 D-6

Q409 C-6

Q410 E-3

• Semiconductor

Location

TMR-RF960R

4-4. SCHEMATIC DIAGRAM –TX-VCO BAORD –

C504

C505

C516

C520

C515

C510

C506 C507

D501

X501

L503

L501

L506

L505

L502

C508

C511

C522

C523

C521

C524

C514

C518

C512

CT501

C503

C509

C513

C501

C527

C526

C528

R504

R506

R505

R507

Q501

Q503

R503

Q502

R508

CN503

CN501

CN502

JC510

R512

R514

C525

R509

R511

R513

0.5p

0.01

3p 100p

1SV245

(TPH3)

1080MHz

AIR

1.5p

0.001

0.01

1.5p

0.001

20p

0.001

6.8k

2.2k

470

2SC5084

MODULATOR

2SC5084

RF AMP

2.2k

2SC5084

MODULATOR

22k

100

16V

47k

FREQUENCY

CT501

TRANSMISSION

SIG

ANT

4-5. PRINTED WIRING BOARD –TX-VCO BAORD –

Q501

Q502

D501

R503

R504 R505

R506

R507

R509

R513

R508

C512

C511

C510

C513

C508

C509

C505

C504

C503

C507

C506

C515 L501

L506

L505

L503

L502

C514

JC510

C526

C527 C528

CT501

C525

R511

R512

Q503

R514

C501

C516

C520

C521

C522

C523

C524

C518

ANT SIG

TX-BASE

BOARD

(Page 7)

(11)

1-861-440-

(11)

1-861-440-

(SIDE A)

BOARDTX-VCO

BOARDTX-VCO (SIDE B)

Note on PrintedWiring Boards:

•X: parts extracted from the component side.

•: Pattern from the side which enables seeing.

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 Ωand 1/4W or less unless otherwise specified.

•A: B+ Line.

•H: adjustment for repair.

•Power voltage is dc 9 V and fed with regulated dc power supply from external

power voltage jack.

•Voltages are dc with respect to ground under no-signal conditions.

•Voltages are taken with a VOM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production tolerances.

•Circled numbers refer to waveforms.

•Signal path.

F: FM

L: AUDIO

Ref. No. Location

D501 E-2

Q501 D-2

Q502 D-2

Q503 B-1

• Semiconductor

Location

TMR-RF960R

•WAVEFORMS

IC403 7 CAPACITOR

VOL/DIV : 0.5 V AC

TIME/DIV : 10

sec

2IC403 8 PILOT OUTPUT

VOL/DIV : 0.5 V AC

TIME/DIV : 20

sec

2.0Vp-p

sec

0.6Vp-p

sec

TMR-RF960R

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

SECTION 5

EXPLODED VIEWS

NOTE:

•-XX, -X mean standardized parts, so they may

have some differences from the original one.

•Items marked “*” are not stocked since they

are seldom required for routine service. Some

delayshould be anticipated when ordering these

items.

•Themechanical parts with noreference number

in the exploded views are not supplied.

•Hardware (# mark) list and accessories are

given in the last of this parts list.

not supplied not supplied

not supplied

not supplie

not supplied

*1A-4547-110-A TX-BASE BOARD, COMPLETE

(including TX-VCO BOARD)

23-246-378-02 TERMINAL (+), CHARGE

33-246-379-02 TERMINAL (-), CHARGE

43-246-372-01 BRACKET, JACK

5X-3384-856-1 CABINET ASSY, UPPER

63-246-376-31 CABINET (LOWER)

73-246-966-01 FOOT (BACK), RUBBER

84-984-729-01 FOOT, RUBBER

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