MDX-CA680/CA680X

4-2. BLOCK DIAGRAM – TUNER Section –

 

 

 

 

 

 

 

 

 

 

 

BU B+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNER +8.7V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNER +5.6V

 

 

 

 

 

 

 

 

 

FM/AM TUNER UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J10

TU10

 

 

 

 

11

5

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(FM/AM ANTENNA IN)

(EEPROM)SDA

(EEPROM)SCL

METER-S

DET-RDS

 

(5V)EEPVDD

(8.5V)VCC

(5V)VDD

 

 

 

(IICBUS)SDA (IICBUS)SCL

 

 

 

 

 

 

 

2

 

 

 

 

 

MPX

10

 

 

 

 

ANT-FM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

ANT-AM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AM-DET

8

 

 

 

 

 

17 18

14

9

 

 

 

 

 

 

 

12 13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DATA CLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DATA

CLOCK

(AEP, UK)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS DECODER

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC51

 

 

SIGNAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

QUALITY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DECODER

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57 kHz

SC

 

 

 

 

 

RDS/RDBS

 

IIC BUS

SDA

 

 

 

 

 

 

 

 

OUT

 

 

CIN

CLOCKED

INTERFACE

9

 

 

 

 

 

 

16

 

19

SCL

 

 

 

 

 

 

BAND-PASS

18

COMPARATOR

DEMODULATOR

REGISTER

SLAVE

10

 

 

 

 

 

 

MPX

FILTER

 

 

 

& DECODER

TRANSCEIVER

 

 

 

 

 

 

 

 

 

MPTH

 

 

 

 

 

 

 

 

 

 

 

BUFFER

 

 

 

 

 

LVIN

MULTI

 

 

OSCILLATOR

 

 

 

 

 

 

Q21

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

20

PATH

 

 

 

& CLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

DETECTOR

 

 

 

OSCI

 

OSCO

DAVN

 

 

 

 

 

FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BAND-PASS

 

 

 

 

 

 

 

 

 

 

 

5

4

8

 

 

 

 

 

IC20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q22

 

 

 

 

 

 

 

 

 

 

 

X51

 

 

 

 

 

 

 

NOISE DET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCHARGE

 

 

 

 

 

 

 

 

 

 

4.332MHz

 

 

 

 

 

 

 

SWITCH

 

86 87

2

 

 

 

 

8

 

 

 

27

 

 

 

 

 

7

90

 

EEP SIO

EEP CKO

VSM

 

 

 

 

MPTH

 

 

 

DAVN

 

 

 

 

 

QUALITY

NS MASK

 

 

 

 

 

 

 

 

 

 

 

SYSTEM CONTROLLER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC501 (1/3)

 

 

 

 

 

 

 

MPX

E (Page 25)

AM

F (Page 25)

DATA, CLOCK

I (Page 25)

S-METER

H (Page 25)

SIGNAL PATH

: FM

: MW/LW

24 24

Page 24
Image 24
Sony MDX-CA680 service manual Block Diagram Tuner Section, FM/AM Tuner Unit

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.