Sony MDX-CA680 service manual Block Diagram BUS CONTROL/POWER Supply Section, +B Switch

Page 26

MDX-CA680/CA680X

4-4. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –

SYSTEM CONTROLLER

IC501 (3/3)

 

 

 

 

 

 

REMOTE CONTROL

29

SIRCS

 

 

 

 

 

 

 

 

RECEIVER

 

 

 

 

 

 

 

 

IC971

 

 

 

 

 

U-COM +5V

RESET SIGNAL

 

33

RESET

 

 

 

 

GENERATOR

 

 

 

 

 

 

 

IC602

 

 

 

 

 

 

 

 

 

 

 

 

S702

 

 

 

 

CNJ600

 

 

 

 

 

RESET

 

 

 

 

 

 

 

 

 

 

D301

 

 

 

BUS CONTROL IN

 

 

 

 

 

 

 

 

 

 

SONY BUS INTERFACE

 

 

 

 

 

 

 

 

 

 

 

 

(FOR SONY BUS)

 

 

 

IC505

 

 

 

 

 

 

2

2

RST

 

RESET

RST

13

24

 

 

 

RESET

 

SYSRST

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

DATA I/O

DATA IN

D558

 

 

 

 

6

9

42

UNISO

 

 

DATA

 

 

 

 

 

 

 

 

 

 

DATA OUT

8

43

UNISI

 

 

4

4

CLK

 

 

CLK IN

 

44

UNICKO

 

 

CLK

 

 

11

 

 

 

 

 

 

 

 

BUS ON SWITCH

 

 

 

 

 

 

 

 

 

 

Q560

 

BUS

 

 

BUS

 

 

 

 

 

6

1

ON

 

BUS ON

IN

 

25

 

 

 

BUS ON

 

12

BUSON

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PW ON 50

7

 

BATT

BATTERY

B/U-C

 

 

 

TUNON

49

BATT

3

10

28

BUIN

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

TH600

 

 

 

 

 

 

 

 

 

 

 

D552

 

 

 

 

 

 

 

 

 

 

D701

BATTERY

 

 

 

 

 

 

BACK-UP B+

 

 

 

 

 

 

 

 

 

DETECT

 

 

 

 

 

 

 

 

 

Q701

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ILLON

93

 

 

 

 

 

 

 

 

 

ACCIN

38

 

 

 

 

 

 

 

 

 

DOORIND

92

 

 

 

 

 

 

 

MD MECHANISM CONTROLLER

 

 

 

 

 

 

 

 

IC501 (2/2)

 

 

 

 

 

 

 

 

60

BU-IN

MD-ON

65

 

 

 

 

 

 

 

61

BUS-ON

 

 

 

 

 

 

 

 

 

30

RESET

MDMON 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

UNISI

 

 

 

 

 

 

 

 

 

48

UNICKIO

 

 

 

 

 

 

 

 

 

50

UNISO

 

 

 

 

 

 

 

 

 

46

LINKOFF

 

 

 

 

 

 

 

 

 

26

26

 

 

CN601 (2/2)

 

 

 

 

 

 

 

 

 

 

D613

 

6

ANT-R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D612

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AMP-R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

6

AMP+B

 

 

 

 

 

 

BACK-UP B+

 

8

ANT+B

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER AMP

 

 

 

 

 

REGULATOR

 

 

 

(IC611) B+

 

 

 

 

 

 

 

 

 

 

 

 

TUNER +8.7V

 

 

 

 

 

IC601

 

 

 

 

 

 

 

 

 

11

TU8.7V

 

 

VCC 7

 

 

 

 

 

 

 

D610

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNER +5.6V

 

 

10

TU5.6V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM +8V

9

COM8V

 

 

 

 

 

 

 

 

 

 

(AUDIO CIRCUIT B+)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D1

 

SW

SW

 

 

 

 

 

 

BU B+

 

 

5

BU+B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D621

STB

5.6VON

8.7VON

 

 

 

 

 

 

U-COM +5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

3

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU601

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LCD B+

 

+B SWITCH

+B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(FRONT PANEL)

 

Q665

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q662

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACCESSORY CHECK

 

 

 

 

 

 

 

 

ACC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q631

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED810

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DISC SLOT ILLUMINATION)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED810,

 

 

 

 

LED DRIVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSW810

 

LSW810

 

 

 

 

Q663

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Z

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD +6V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOADING MOTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRIVER (IC305) B+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+6V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B+ SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q402, 403

 

 

 

 

 

 

 

 

 

Q331

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q333

 

 

 

 

 

DRIVER +5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

MOTOR/COIL DRIVER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(IC303) B+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V

 

 

+3.3V

 

 

 

 

 

 

 

 

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC401, Q401

 

 

 

 

 

 

 

 

Q336

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q335

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 26
Contents Specifications MDX-CA680/CA680XElectrical Adjustments Table of Contents GeneralDisassembly Exploded ViewsLocation of controls Section GeneralSetting the clock US model US model AEP, UK Models Precautions Toyota SUB Panel Assy Section DisassemblyDisassembly Flow Mechanism Deck MG-164MA-138 Main BoardHeat Sink Servo BoardMD Cover Assy Float BlockLO Motor Assy Loading M903 Lever LE23 AssyHolder Assy Chucking ARM AssyOptical PICK-UP KMS-241C SL Motor Assy Sled M902, SP Motor Assy Spindle M901Tuner Section Section Electrical AdjustmentsMD Section Section Diagrams IC101 PCM1718E/2KCXA2523AR IC305 BA6287F IC401 TDA7402TR IC505 BA8270F-E2 Block Diagram Servo Section EFM/ACIRC ENCODER/DECODERBlock Diagram Tuner Section FM/AM Tuner UnitBlock Diagram Main Section 23 a 23 B 24 F 24 E 24 HBlock Diagram BUS CONTROL/POWER Supply Section +B SwitchSignal 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 Mvci XrasXWE AsyoSprd SrdrSfdr SpfdVCC XstbyVref WbladjDfctsel ResetEject DpllselUnireq ERROR-PWMLinkoff UnickioKEYIN1 VSMNIL KEYIN0PW on IIC SIOIIC CKO ColswSection Exploded Views General SectionFront Panel Section LCD901Mechanism Deck MG-164MA-138 159 157156 158 161Section Electrical Parts List KEYSWITCH, KEY Board with LED List SWITCH, Tactile with LED D-BASS KEY MainMain Diode DTZ-TT11-16B Ref. No Description Remark R18 Short R21 216-825-11 Main Sensor Servo VibratorInductor Chip Servo SUB Disc Slot Illumination CA680X505 501 502503 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.