Sony MDR-IF4000 service manual Block Diagram

Page 11

MDR-IF4000

3-2. BLOCK DIAGRAM

D401-408

 

IC001

 

 

IR

 

FRONTEND

 

 

RECEIVER

 

 

 

 

 

 

SID/

AMP

 

5 IN

 

OUT 16

10 ADIN A/D

I/V

GCA/

 

 

BPF

 

 

 

IC101

 

 

 

IC201

 

 

 

 

IR RECEIVER/DSP

 

 

D/A CONVERTER

 

 

IC302

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RV201

 

HEADPHONE

 

 

BUS

 

 

16 SCKI

 

 

AMP

 

 

 

APX 31

 

VOL w

 

5

SP002

DEMODULATOR

DATA

I/FOUTPUT

LRCK/RCS 59

1

LRCK

 

 

 

VOUTL

9

 

4

SPEAKER

 

 

 

DAOUT/

 

 

 

 

 

 

 

 

 

(L CH)

 

 

 

 

 

 

 

 

8

 

 

 

ROUT 60

 

 

 

 

 

 

 

 

2

DATA

 

 

Q302

 

 

 

 

BCK/RCLK 54

3

BCK

 

 

MUTE

 

 

 

 

 

 

 

 

 

 

 

5

SP001

 

 

 

 

 

PD

VOUTR

8

 

4

SPEAKER

 

 

 

 

 

 

(R CH)

 

 

 

 

 

 

 

 

8

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

Q301

 

 

 

 

 

 

 

 

 

 

RAM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MUTE

IC301

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q101

 

 

HEADPHONE

 

 

 

 

 

 

 

 

 

AMP

 

 

 

 

61

 

 

MUTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTVALID

 

 

DRIVE

 

 

 

 

CONTROL

 

XRST 13

 

 

1 VOUT

VDD 2

+2.5V

 

 

 

 

 

 

 

 

IC102

 

 

 

 

 

 

 

 

 

RESET

 

 

 

 

 

 

 

 

 

 

S701

 

S701

 

 

 

 

 

 

 

 

 

 

 

+1.5V

+2.5V

IC501

+1.5V

REGULATOR

5 VOUT

VIN 2

IC502

+2.5V

REGULATOR

D501

5 VOUT

VIN 1

OUT LX

IC503

+2.8V DC/DC

IC601

LEVEL DETECT

1

2

Q601,602

+B SWITCH

D502

POWER

AUTO

ON/OFF

D601 S602 S601

BATTERY

DETECTCHARGE TERMINAL

CONVERTOR

RECHARGEABLE

 

BATTERY

SIGNAL PATH

(BP-HP550)

 

1.2V 550mAhX2

: ANALOG

 

 

: RF

MDR-IF4000

11 11

Image 11
Contents MDR-IF4000 SpecificationsExploded Views Table of ContentsDisassembly DiagramsSection General Front Plate R Assy Section DisassemblyDisassembly Flow 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.