Sony MDX-CA680 service manual IC401 TDA7402TR

Page 21

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

Image 21
Contents MDX-CA680/CA680X SpecificationsDisassembly Table of Contents GeneralElectrical Adjustments Exploded ViewsSection General Location of controlsSetting the clock US model US model AEP, UK Models Precautions Toyota Section Disassembly Disassembly FlowSUB Panel Assy Main Board Mechanism Deck MG-164MA-138Servo Board Heat SinkFloat Block MD Cover AssyLever LE23 Assy LO Motor Assy Loading M903Chucking ARM Assy Holder AssySL Motor Assy Sled M902, SP Motor Assy Spindle M901 Optical PICK-UP KMS-241CSection Electrical Adjustments MD SectionTuner Section IC101 PCM1718E/2K Section DiagramsCXA2523AR IC305 BA6287F IC401 TDA7402TR IC505 BA8270F-E2 EFM/ACIRC ENCODER/DECODER Block Diagram Servo SectionFM/AM Tuner Unit Block Diagram Tuner Section23 a 23 B 24 F 24 E 24 H Block Diagram Main Section+B Switch Block Diagram BUS CONTROL/POWER Supply SectionSignal path Circuit Boards Location Semiconductor Location MDX-CA680/CA680X MDX-CA680/CA680X D558 D560 D601 D609 D610 D612 MDX-CA680/CA680X Schematic Diagram Main Board 2/3 See page 40 for Waveforms MDX-CA680/CA680X K1 S2 K2 Schematic Diagram SUB Board Printed Wiring Board KEY Board Schematic Diagram KEY Board See page 40 for Waveform KEY Board IC PIN Function Description XWE XrasMvci AsyoSfdr SrdrSprd SpfdVref XstbyVCC WbladjEject ResetDfctsel DpllselLinkoff ERROR-PWMUnireq UnickioNIL VSMKEYIN1 KEYIN0IIC CKO IIC SIOPW on ColswGeneral Section Section Exploded ViewsLCD901 Front Panel SectionMechanism Deck MG-164MA-138 156 158 157159 161KEY Section Electrical Parts ListSWITCH, KEY Board with LED List KEY Main SWITCH, Tactile with LED D-BASSMain Diode DTZ-TT11-16B Ref. No Description Remark R18 Short R21 216-825-11 Vibrator Main Sensor ServoInductor Chip Disc Slot Illumination CA680X Servo SUB503 501 502505 506 507Memo Revision History

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.