Sony MDX-CA680 Vsm, Nil, KEYIN1, KEYIN0, RCIN0, Quality, Dstsel, Vref+, Vdd, Oscin, Lcdso, Lcdce

Page 47

MDX-CA680/CA680X

• MAIN BOARD IC501

MN101C49KTJ (US), MN101C49KTK (AEP, UK) (SYSTEM CONTROLLER)

 

 

 

 

 

 

 

 

 

 

Pin No.

Pin Name

 

I/O

 

Description

 

 

 

 

 

 

 

 

 

 

1

 

 

VREF–

 

I

Reference voltage (0V) input terminal (for A/D converter)

 

 

 

 

 

 

 

 

 

2

 

 

VSM

 

I

FM and AM signal meter voltage detection signal input from the FM/AM tuner unit (TU10)

 

 

 

(A/D input)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

NIL

 

I

Not used (fixed at “L”)

 

 

 

 

 

 

 

 

 

 

 

KEYIN1

 

 

Key input terminal (A/D input) LSW902, LSW905 to LSW911 (LSW910 and LSW911 are AEP,

4

 

I

UK models only), S902 to S905 (MENU, SOUND, ENTER, S SCROLL, D DISPLAY, LIST,

 

 

 

 

 

 

 

AF, TA, > MSEEK +, . mSEEK –, DISC/PRESET +, DISC/PRESET –, )

 

 

 

 

 

 

 

 

5

KEYIN0

 

I

Key input terminal (A/D input) LSW901, LSW903, LSW904, LSW914 to LSW919, S906, S907

 

(OFF, SOURCE, MODE, 6, 5, 4, 3, 2, 1, D-BASS, MBP)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

RCIN0

 

I

Rotary remote commander key input terminal (A/D input)

 

 

 

 

 

 

 

 

 

 

7

QUALITY

 

I

Noise level detection signal input at SEEK mode (A/D input)

 

 

 

 

 

 

 

 

 

8

 

 

MPTH

 

I

Multi-path detection signal input from the RDS decoder (IC51) (A/D input)

 

 

 

 

 

 

 

 

 

9

DSTSEL

 

I

Destination setting terminal (fixed at “L” in this set)

 

 

 

 

 

 

 

 

 

 

10

 

 

VREF+

 

I

Reference voltage (+5V) input terminal (for A/D converter)

 

 

 

 

 

 

 

 

 

 

 

11

 

 

VDD

 

—

Power supply terminal (+5V)

 

 

 

 

 

 

 

 

 

 

 

12

OSCOUT

 

O

Main system clock output terminal (18.432 MHz)

 

 

 

 

 

 

 

 

 

 

13

 

 

OSCIN

 

I

Main system clock input terminal (18.432 MHz)

 

 

 

 

 

 

 

 

 

 

 

14

 

 

VSS

 

—

Ground terminal

 

 

 

 

 

 

 

 

 

 

 

15

 

 

XIN

 

I

Sub system clock input terminal (32.768 kHz)

 

 

 

 

 

 

 

 

 

 

16

 

 

XOUT

 

O

Sub system clock output terminal (32.768 kHz)

 

 

 

 

 

 

 

 

 

17

 

 

MMOD

 

I

Selection signal of memory mode input terminal “L”:single chip mode (fixed at “L”)

 

 

 

 

 

 

 

 

 

18

 

 

LCDSO

 

O

Serial data output to the liquid crystal display driver (IC900)

 

 

 

 

 

 

 

 

 

 

19

 

 

LCDCE

 

O

Chip enable signal output to the liquid crystal display driver (IC900)

“H” active

 

 

 

 

 

 

 

 

20

LCDCKO

 

O

Serial data transfer clock signal output to the liquid crystal display driver (IC900)

 

 

 

 

 

 

 

 

 

 

21 to 23

 

 

NC

 

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

24

SYSRST

 

O

Reset signal output to the SONY bus interface (IC505) “L”: reset

 

 

 

 

 

 

 

 

 

25

 

BUSON

 

O

Bus on/off control signal output to the SONY bus interface (IC505)

“L”: bus on

 

 

 

 

 

 

 

 

26

KEYACK

 

I

Input of acknowledge signal for the key entry Acknowledge signal is input to accept function

 

and eject keys in the power off status On at input of “H”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27

 

 

DAVN

 

I

Synchronized detection signal of RDS data block input from the RDS decoder (IC51)

 

 

 

“H” active (AEP, UK models only)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28

 

 

BUIN

 

I

Battery detection signal input from the SONY bus interface (IC505)

 

 

 

 

“L” is input at low voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

 

 

SIRCS

 

I

SIRCS remote control signal input from the remote control receiver (IC971)

 

 

 

 

 

 

 

 

 

30, 31

 

 

NIL

 

I

Not used (fixed at “L”)

 

 

 

 

 

 

 

 

 

 

 

32

 

 

NIH

 

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

 

33

 

 

RESET

 

I

System reset signal input from the reset signal generator (IC602) and RESET switch (S702)

 

 

 

“L”: reset “L” is input for several 100 msec after power on, then it changes to “H”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

34

NOSESW

 

I

Front panel block remove/attach detection signal input from the nose detection switch (S701)

 

“L”: front panel is attached

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

 

BEEP

 

O

Beep sound drive signal output to the power amplifier (IC611)

 

 

 

 

 

 

 

 

 

 

36

 

 

NCO

 

O

Not used (open)

 

 

 

 

 

 

 

 

 

37

TEST IN

 

I

Setting terminal for the test mode

“L”: test mode, Normally: fixed at “H”

 

 

 

 

 

 

 

 

 

38

 

ACC IN

 

I

Accessory detection signal input

“L”: accessory on

 

 

 

 

 

 

 

 

 

 

39

 

 

NCO

 

O

Not used (open)

 

 

 

 

 

 

 

40

TELATT

 

I

Telephone detection signal input terminal At input of “H”, the signal is attenuated by –20 dB

 

 

 

 

 

 

 

 

 

41

 

 

NIH

 

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

 

 

 

47

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Image 47
Page 46 Page 48
Contents MDX-CA680/CA680X SpecificationsExploded Views Table of Contents GeneralDisassembly Electrical AdjustmentsSection General Location of controlsSetting the clock US model US model AEP, UK Models Precautions Toyota SUB Panel Assy Section DisassemblyDisassembly Flow 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-241CTuner Section Section Electrical AdjustmentsMD 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 Asyo XrasXWE MvciSpfd SrdrSfdr SprdWbladj XstbyVref VCCDpllsel ResetEject DfctselUnickio ERROR-PWMLinkoff UnireqKEYIN0 VSMNIL KEYIN1Colsw IIC SIOIIC CKO PW onGeneral Section Section Exploded ViewsLCD901 Front Panel SectionMechanism Deck MG-164MA-138 161 157156 158 159KEY 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 SUB506 507 501 502503 505Memo 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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