Sony MDX-CA680 Linkoff, Unireq, Unickio, Unisi, Uniso, Cc-Xint, Ejt-Ok, Error-Pwm, Bu-In, Bus-On

Page 46

MDX-CA680/CA680X

Pin No.

 

Pin Name

I/O

 

Description

 

 

 

 

 

 

 

 

46

 

LINKOFF

O

Unilink on/off control signal output for the SONY bus “L”: link on, “H”: link off

 

 

 

 

 

 

 

47

 

UNIREQ

O

Data request signal output terminal (for SONY bus) “H”: request on

Not used (open)

 

 

 

 

 

 

48

 

UNICKIO

I/O

Serial clock signal input from the system controller (IC501) or serial clock signal output to the

 

SONY bus interface (IC505) and system controller (IC501) (for SONY bus)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

 

UNISI

I

Serial data input from the SONY bus interface (IC505)

 

 

 

 

 

 

 

 

 

 

50

 

UNISO

O

Serial data output to the SONY bus interface (IC505)

 

 

 

 

 

 

 

 

51

 

MD-CKO

O

Serial data transfer clock signal output to the CXD2662R (IC301) and CXA2523AR (IC302)

 

 

 

 

 

 

 

 

52

 

MD-SI

I

Reading serial data signal input from the CXD2662R (IC301)

 

 

 

 

 

 

 

 

 

 

 

 

53

 

—

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

54

 

SENS

I

Internal status (SENSE) input from the CXD2662R (IC301)

 

 

 

 

 

 

 

 

 

 

55

 

CC-XINT

I

Interrupt status input from the CXD2662R (IC301)

 

 

 

 

 

 

 

 

 

 

56

 

LIMIT-IN

I

Detection input from the sled limit-in detect switch

 

 

 

The optical pick-up is inner position when “L”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57

 

EJT-OK

I

Front panel open detection signal input terminal

“L”: eject possible

 

 

 

 

 

 

 

 

 

58

ERROR-PWM

O

PWM error monitor output terminal (C1and ATER is output when test mode)

Not used (open)

 

 

 

 

 

 

59

 

MD-RST

O

Reset signal output to the PCM1718E (IC101), CXD2662R (IC301) and BH6518FS (IC303)

 

“L”: reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

BU-IN

I

Battery detect signal input from the SONY bus interface (IC505) and battery check circuit

 

“H”: battery on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61

 

BUS-ON

I

SONY bus on/off control signal input from the system controller (IC501) “L”: bus on

 

 

 

 

 

 

 

 

62

 

SQSY

I

Subcode Q sync (SCOR) input from the CXD2662R (IC301)

 

 

 

“L” is input every 13.3 msec Almost all, “H” is input

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

63

 

C-SW

I

Inputs a disc loading start or a disc eject completion detect switch detection signal

 

“L”: When loading start or eject completed of a disc loading operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

64

 

MD-LAT

O

Serial data latch pulse signal output to the CXD2662R (IC301) and CXA2523AR (IC302)

 

 

 

 

 

 

65

 

MD-ON

O

Power supply on/off control signal output of the MD mechanism deck section main power supply

 

“H”: power on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66

 

DEEMP

O

De-emphasis on/off control signal output to the PCM1718E (IC101)

“H”: de-emphasis on

 

 

 

 

 

 

 

 

67

 

A-MUTE

O

Audio muting on/off control signal output

 

 

 

 

 

 

 

 

 

 

 

 

68

 

—

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

69

 

TSTCKO

O

Output of clock signal for the test mode display

Not used (open)

 

 

 

 

 

 

 

 

 

 

70

 

TSTSO

O

Output of data for the test mode display Not used (open)

 

 

 

 

 

 

 

 

 

 

 

71

 

TSTMOD

I

Setting terminal for the test mode

“L”: test mode, “H”: normal mode

 

 

 

 

 

 

 

 

 

 

 

72

 

VCC

—

Power supply terminal (+5V)

 

 

 

 

 

 

 

 

 

 

 

 

 

73

 

NC

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

 

 

74 to 77

TOUT0 to TOUT3

O

Output of the 4⋅ 8 matrix test keys

Not used (open)

 

 

 

 

 

 

 

78 to 80

TIN0 to TIN2

I/O

Input of the 4⋅ 8 matrix test keys (“L” is always output, except in test mode)

Not used (open)

 

 

 

 

 

 

 

 

 

 

46

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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 Disassembly Flow Section DisassemblySUB Panel Assy 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 M901MD Section Section Electrical AdjustmentsTuner 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.
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