Sony MDR-IF4000 service manual Specifications

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SERVICE MANUAL

Ver. 1.1 2005. 02

The MDR-IF4000 is the cordless stereo headphones that comprises the MDR- DS4000.

MDR-IF4000

US Model

Canadian Model

AEP Model

E Model

MDR-DS4000 consists of the following models respectively.

Cordless stereo headphone

MDR-IF4000

 

 

Digital surround processor

DP-IF4000

 

 

SPECIFICATIONS

General

Modulation System

DQPSK-IM

Secondary carrier wave frequency

3.75MHz

Playback frequency range

10 – 22,000 Hz

Power requirements

Rechargeable nickel-metal hydride batteries (supplied) or commercially available (size AAA) alkaline batteries Mass Approx. 300 g (11 oz) (including the supplied rechargeable nickel-metal hydride batteries)

Supplied accessories

Rechargeable nickel-metal hydride batteries

BP-HP550 (550 mAh min.) (2) Operating Instructions (1)

Design and specifications are subject to change without notice.

CORDLESS STEREO HEADPHONE

9-879-301-02

Sony Corporation

2005B02-1

Personal Audio Company

© 2005.02

Published by Sony Engineering Corporation

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Contents MDR-IF4000 SpecificationsDisassembly Table of ContentsDiagrams Exploded ViewsSection General Disassembly Flow Section DisassemblyFront Plate R Assy Hanger R RX BaordFront Plate L Assy Wiring on the Right SideHanger L Batt BoardWiring on the Left Side HOW to Hang the Tension Spring Wiring on the SW BoardCircuit Boards Location Section DiagramsBlock Diagram RX Board Side a Printed Wiring Board Receiver SectionBatt Board Printed Wiring Board Power SectionConvertor Schematic Diagram Receiver SectionIC101 CXD4017R IC Block DiagramsMDR-IF4000 Section Exploded Views Housing L Assy SectionNot supplied PD1 board SP001 Supplied Housing R Assy SectionSection Electrical Parts ListPCM1773PWR RX RX-SW Memo Supplement Change of RX Board PD1 Board CH Front Section CH Rear Section Schematic Diagram Receiver Section Suffix-12 RX Suffix-12 RES, VAR, Carbon Memo Revision History

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.