Sony MDX-CA680 service manual IC401 TDA7402TR

Models: MDX-CA680

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MDX-CA680/CA680X

– MAIN Board –

IC401

TDA7402TR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACINLR ACINRF

ACINRR

 

 

 

OUTLF

OUTLR

OUTRF

OUTRR

OUTSWL

OUTSWR

OUTSSL

OUTSSR

 

 

 

 

 

 

 

33 32 31

 

 

 

30

29

28

27

26

25

24 23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIXER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MONO-

MONO-

MONO-

MONO-

MONO-

MONO-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FADER

FADER

FADER

FADER

FADER

FADER

 

 

 

ACINLF

34

 

 

 

 

 

 

 

 

 

FRONT

 

 

 

SUBWOOFER

 

 

 

SWINR

35

 

 

 

 

ACIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT

 

 

 

 

+PHASE

 

 

 

SWINL

36

 

 

 

 

 

REAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

SELECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACOUTR

37

 

 

 

 

MAIN

 

 

 

 

SW

 

 

 

 

 

 

 

 

ACOUTL

38

 

 

 

 

SECOND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CREF

39

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

VDD

 

 

 

 

VOICE

 

 

 

 

-BUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

SCL

 

 

 

 

BANDPASS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

SDA

 

 

HP

 

 

 

 

 

 

 

 

IIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BASS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUPPLY

19

GND

 

 

TREBLE

 

 

 

 

 

 

 

 

 

 

HIGH-CUT

 

 

 

18

SM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLUME

 

 

 

 

 

 

 

CONTROL

 

 

S&H

 

 

PULSE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SOFTMUTE

 

 

 

 

 

 

 

DIGITAL

 

 

25kHz

 

 

QUAL

17

QUAL

 

 

 

 

 

COMPANDER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOUDNESS

 

 

 

 

 

LOUDNESS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEMODULATOR

 

MULTIPATH

16

MPOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MUX

40

 

 

 

 

 

 

 

 

 

 

 

 

 

DETECTOR

15

MPIN

 

 

 

 

 

 

 

 

IN-GAIN

 

 

+STEREO ADJUST

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+STEREO BLAND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BEEP

 

 

 

D/A

14

LEVEL

 

 

IN-GAIN

 

 

 

 

 

 

MUTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PILOT

 

CONVERTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+AUTO ZERO

 

 

 

 

 

 

 

 

 

 

CANCELATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIL DET

 

 

 

 

 

MAIN SOURCE

 

MIXING

SECOND SOURCE

 

 

 

 

 

 

 

 

 

SELECTOR

 

SELECTOR

 

 

SELECTOR

 

 

 

 

 

 

 

 

MD1

41

 

 

 

 

 

 

 

 

 

 

 

 

 

PLL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MD1G

MAIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80kHz

 

 

42

 

 

 

 

INPUT

 

 

 

 

 

 

 

 

 

 

13

MPX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LP

 

 

 

 

 

MULTIPLEXER

 

 

 

FM

 

 

 

 

 

 

 

MD2

43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MD2G

PHONO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

44

 

 

 

 

 

 

 

 

 

AM

AM/FM

 

 

 

 

12

AMIF

 

MAIN

 

CH0

 

 

AUX

 

 

 

 

 

 

 

 

 

 

NOISE BLANKER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

9

10

11

 

 

 

 

 

 

 

 

 

SEL

SER

FD1L+

FD1L–

FD1R+

FD1R–

FD2L+

FD2L–

FD2R+

FD2R–

AM

 

 

 

 

 

 

 

 

21

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Sony MDX-CA680 service manual IC401 TDA7402TR

MDX-CA680 specifications

The Sony MDX-CA680 is an advanced multi-disc car audio system that exemplifies Sony's commitment to delivering high-quality sound and innovative features. With its sleek design and user-friendly interface, it stands as a popular choice for audiophiles and casual listeners alike. This model supports both MD (MiniDisc) playback as well as traditional CD formats, providing exceptional versatility for music enthusiasts who prefer various media.

One of the standout features of the MDX-CA680 is its 40 watts maximum output per channel. This power allows for dynamic sound reproduction across a wide range of musical genres. By utilizing Sony's proprietary Dynamic Bass Enhancement technology, the system enriches low-frequency sounds, making them feel fuller and more immersive, perfect for bass-heavy tracks.

The MDX-CA680 is designed with user convenience in mind. Its rotary control knob and intuitive button layout facilitate easy navigation through tracks and settings, allowing drivers to focus on the road while effortlessly managing their audio experience. The system also boasts a detachable faceplate, a crucial security feature for preventing theft.

Another notable characteristic of the MDX-CA680 is its support for various audio formats. Besides MD and CD, the system can handle MP3s, enabling users to create and playback custom playlists with ease. The player’s compatibility with CD-R and CD-RW media also enhances its functionality, allowing users to enjoy burned discs filled with their favorite tunes.

The display on the MDX-CA680 is characterized by a clear and bright LCD screen that provides essential information at a glance. This includes track titles, elapsed time, and artist names, making it easy to follow along with your music. Additionally, the unit supports adjustable EQ settings, allowing users to personalize their audio experience to suit their preferences.

In terms of installation, the MDX-CA680 is designed to integrate seamlessly into various vehicle models, featuring a standard DIN size that fits most aftermarket dashboards. Overall, the Sony MDX-CA680 stands out in the realm of car audio systems, offering a blend of versatility, quality, and user-friendly features that enhance the driving experience, making every journey more enjoyable.