MDR-IF4000

3-3. PRINTED WIRING BOARD – RECEIVER SECTION –

 

: Uses unleaded solder.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

3

 

4

 

5

 

6

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RX BOARD

(SIDE A)

 

 

 

 

RX BOARD

(SIDE B)

7

8

9

10

A

B

C121

C120 X101

 

L104

C102

R110

 

 

 

 

D103

 

 

 

 

R107

 

C119

L109

 

L108

C125

 

IC101

 

R108

32

C113

 

 

33

 

 

 

 

 

 

C111 C115

 

4849

 

L106

 

 

C124

R109

C123

17

16

1

64

C118

C130

 

 

D102

 

 

 

 

 

D101

R001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C006

L001

IC102

 

C010

 

 

 

 

 

C011

 

3

1

C014

L003

C007

4

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R111

 

 

 

C012

 

 

C126

12

IC001

1

R002

 

 

 

 

 

 

 

 

 

C116

C017

 

 

 

 

 

 

C013

 

 

 

13

 

R004

24

 

 

 

C015

C008

C001

 

 

 

 

 

 

 

 

 

 

R003

 

 

 

 

 

 

 

 

C009

C005

C003

+B SIG

+B

SIG

 

D407

 

D408

PD2 BOARD

SIG

 

(R-CH REAR SECTION)

1-864-939- 11

 

 

(11)

 

+B

SIG

 

D406

D405

+B

 

 

1-864-938- 11

PD1 BOARD

(R-CH FRONT SECTION)

C

L103

C101 C208

C104

C210

L105

C105

L102

R103

C103

 

IC201

 

1

16

 

8

9

 

L101

 

 

C110

R102

R104

C109

R101

C112

 

C204

C108

 

 

C016

L004

 

 

 

L002

 

 

 

 

C107

C004

 

 

 

 

L107

 

 

 

 

Q101

 

 

 

 

 

 

 

R112

 

E

L201

 

R106

C206

C117

D104

 

 

 

 

 

C310

C002 R307

BATT BOARD A (Page 13)

2.5V GND +B

(GRN)

(NAT)

(RED)

(11)

 

+B

 

SIG

 

 

 

D402

 

D401

+B

 

 

1-864-938- 11

PD1 BOARD

(L-CH REAR SECTION)

C203

R202

C202

 

R201

 

 

 

C201

C313

C207

 

 

C303

 

 

 

C314

C306

 

C304

C305

C502

C308

 

 

IC302

4

1

 

C312

 

 

 

 

 

 

 

 

C501

(11)

D

E

C205

C315

RV201

L304

 

VOL

C311

 

R308

 

 

4

1

 

C317

5

8

 

 

 

 

 

L305

L306

C309

R306

Q302

E

 

 

 

C316

 

R502

 

 

 

8 5

C509

1

5

 

 

 

 

 

L301

IC301

 

 

3

4

 

 

 

 

 

 

C301

R302

R301

L302

L303

R501

 

D502

IC501

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER C302

 

 

 

 

 

 

 

 

 

Q301

E

C307

 

 

 

 

 

 

 

 

 

 

 

 

 

1-864-936-

 

11

 

 

 

 

 

 

 

 

 

(11)

 

 

 

SP001

DRIVER

(R-CH)

SP002

DRIVER

(L-CH)

-R +R

(NAT) (RED)

-L +L

(NAT) (GRN)

1-864-936- 11

(11)

+B

SIG

 

 

D403

D404

 

PD2 BOARD

 

 

(L-CH FRONT SECTION)

1-864-939- 11

 

 

 

(11)

 

 

 

• Semiconductor Location

 

Ref. No.

Location

 

D101

 

A-3

 

D102

 

A-3

 

D103

 

A-2

 

D104

 

C-3

 

D401

 

C-9

 

D402

 

C-9

 

D403

 

D-9

 

D404

 

D-9

 

D405

 

B-9

 

D406

 

B-9

 

D407

 

A-9

 

D408

 

A-9

 

D502

 

D-3

 

IC001

 

B-3

 

IC101

 

B-2

 

IC102

 

A-3

 

IC201

 

C-2

 

IC301

 

D-3

 

IC302

 

D-2

 

IC501

 

D-4

 

Q101

 

C-3

 

Q301

 

D-3

 

Q302

 

D-2

MDR-IF4000

12 12

Page 12
Image 12
Sony MDR-IF4000 service manual RX Board Side a, Printed Wiring Board Receiver Section

MDR-IF4000 specifications

The Sony MDR-IF4000 is a remarkable over-ear wireless headphone solution that excels in delivering high-quality audio and user convenience. Designed for both home and studio use, these headphones incorporate Sony's advanced audio technologies to provide an immersive listening experience.

One of the standout features of the MDR-IF4000 is its infrared wireless transmission system. This technology allows users to enjoy music and other audio without the hassle of wired connections. The infrared signal provides a reliable and interference-free connection, ensuring consistent audio quality up to a distance of approximately 30 meters, depending on the environment. This level of freedom is perfect for those who want to move around while listening to their favorite tracks or watching movies.

Audio quality is another key highlight of the MDR-IF4000. Utilizing large 40mm neodymium drivers, these headphones deliver rich, clear sound with impressive bass response. The frequency response range spans from 20 Hz to 20 kHz, which means users can experience a wide range of sounds, from deep lows to sparkling highs. This broad frequency range is essential for those who demand fidelity in their audio playback, whether it’s for music, movies, or gaming.

Comfort is also a focal point in the design of the MDR-IF4000. The headphones feature plush ear cushions that provide a snug yet comfortable fit, making them ideal for extended listening sessions. The adjustable headband ensures that users can find their perfect fit, enhancing the overall experience.

Moreover, these headphones come equipped with an automatic power-off feature that conserves battery life when the headphones are not in use. The included rechargeable battery can provide hours of uninterrupted listening, making the MDR-IF4000 a practical choice for daily use.

The MDR-IF4000 is compatible with various audio sources. It includes an infrared transmitter that can easily connect to televisions, receivers, and other devices, ensuring versatility for all kinds of audio playback. This seamless connectivity presents an ideal solution for movie enthusiasts and audiophiles alike.

In summary, the Sony MDR-IF4000 headphones stand out for their wireless convenience, impressive audio quality, comfortable design, and versatile compatibility. Whether you are enjoying a movie at home or listening to your favorite music, these headphones are built to enhance your audio experience without the restrictions of traditional wired options.