PRINTED WIRING BOARD – RECEIVER SECTION –

Suffix-12

 

 

: Uses unleaded solder.

 

 

 

1

 

 

3

 

4

 

5

 

6

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RX BOARD

(SIDE A)

 

 

 

 

RX BOARD

(SIDE B)

MDR-IF4000

7

8

9

10

A

 

 

L113

L109C102

 

 

 

 

C118

 

D102

 

 

 

 

 

D103

 

L106C124

 

 

 

C006

 

 

 

 

 

 

 

 

C130

 

 

 

 

C121

L104

 

 

R107

R110

 

 

D101

C010

 

L001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

1

 

 

R001

 

 

 

 

 

 

 

 

 

 

 

 

C119

 

 

 

 

C123

4

5

IC102

L003

C011

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L108

C125

R109

 

 

C014

C012

C007

 

 

 

 

 

R111

 

 

 

 

 

R108

 

C126

 

 

R002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

1

 

 

 

 

32

 

 

17

 

 

C120

C113

 

 

 

 

 

 

 

 

 

33

 

 

 

16

 

 

 

 

 

 

C009 C005

+B SIG

+B

SIG

 

D407

 

D408

PD2 BOARD

SIG

 

(R-CH REAR SECTION)

1-864-939- 11

 

 

(11)

 

B

C

X101

C115

 

 

IC101

 

 

C116

C017

C016

IC001

 

 

 

 

 

 

 

 

 

 

C013

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L111

13

R004

24

 

C001

48

 

 

 

 

 

 

C015

C008

 

 

 

C111

 

49

 

64

 

C110

 

 

L004

 

R003

 

 

 

 

C105

 

 

C109

 

 

 

 

L103

 

L105R103

L102

L101

L110

 

 

L002

 

 

C104

R102

 

 

C131

C107

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C112

 

 

L107

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q101

C004

C101

 

C103

 

R104

 

 

 

 

C132

 

 

 

 

 

 

 

 

 

 

 

 

 

C108

 

 

 

 

 

 

 

C210

 

 

C211R101

L112

 

R112

 

 

 

 

 

 

 

1

16

 

 

 

 

 

 

R106

 

 

C208

C204

 

 

 

 

 

C310

 

IC201

 

C206

D104

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C003

C002

BATT BOARD A (Page 13)

R307

2.5V GND +B

(NAT)

+B

SIG

 

D406

D405

+B

 

 

1-864-938- 11

(11)

 

+B

 

SIG

 

 

 

D402

 

D401

+B

 

 

PD1 BOARD

(R-CH FRONT SECTION)

PD1 BOARD

(L-CH REAR SECTION)

 

 

8

9

 

R202

C202

C313

C203

R201

 

 

C207

L201

C117

C304

C305

 

C306

 

C303

 

 

 

 

 

C502

(RED)

1-864-938- 11

(11)

D

C205

RV201

VOL

C201

C315

C320

C311

R308

C312

 

C317

4

1

L304

5

8

 

R306

L305

L306

C309

C314

C319

C308

 

1 4

IC301

 

 

 

 

 

 

 

 

R502

 

 

8 5

C509

 

 

 

 

IC302

D502

L301

 

R501

 

 

R301

 

 

POWER C302R302

C301

L302

L303

 

 

 

 

 

 

C307

 

 

 

C501

1

5

IC501

 

 

3

4

 

SP001

-R +R

(NAT) (RED)

-L +L

(NAT) (GRN)

+B

SIG

PD2 BOARD

D403

D404

(L-CH FRONT SECTION)

 

 

1-864-939- 11

 

 

(11)

 

E

C316

Q302

Q301

 

 

 

 

1-864-936-

12

 

 

 

 

 

(12)

DRIVER

(R-CH)

SP002

DRIVER

(L-CH)

1-864-936- 12 (12)

• 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

25 25

Page 25
Image 25
Sony MDR-IF4000 service manual PD1 Board CH Front Section CH Rear 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.