Sony MDX-CA680 service manual KEY Board

Page 40

MDX-CA680/CA680X

• Waveforms

– SERVO Board –

1IC302 1, 2 (I, J) (MD Play Mode)

510 mVp-p

2IC302 rh (RFO) (MD Play Mode)

6IC301 wj (LRCK) (MD Play Mode)

3.4 Vp-p

22.8 ∝ s

7IC301 wk (XBCK) (MD Play Mode)

qa IC101 4 (LRCK) (MD Play Mode)

3.3 Vp-p

22.8 ∝ s

qs IC101 6 (BCK) (MD Play Mode)

– MAIN Board –

wa IC51 4 (OSCO)

231 ns

ws IC501 qs (OSCOUT)

 

– KEY Board –

 

wf IC900 uf (OSC)

5.3 Vp-p

2.5 Vp-p

 

22.4 ∝ s

480 mVp-p

4.7 Vp-p

3.2 Vp-p

4.8 Vp-p

3IC302 ek (RF) (MD Play Mode)

1.3 Vp-p

4IC302 ef (FE) (MD Play Mode)

354 ns

354 ns

8 IC301 wl (FS256) (MD Play Mode)

qd IC501 es (XTAL)

4.6 Vp-p

88 ns

100 ns

9IC304 5 (MD Play Mode)

4.4 Vp-p

54 ns

wd IC501 qh (XOUT)

5.1 Vp-p

30.5∝ s

Approx.

3.7 Vp-p

150 mVp-p

22 ns

5 IC302 wh (TE) (MD Play Mode)

0 IC101 1 (XTI) (MD Play Mode)

Approx.

2.5 Vp-p

1 Vp-p

 

88 ns

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Contents Specifications MDX-CA680/CA680XTable of Contents General DisassemblyElectrical Adjustments 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 Xras XWEMvci AsyoSrdr SfdrSprd SpfdXstby VrefVCC WbladjReset EjectDfctsel DpllselERROR-PWM LinkoffUnireq UnickioVSM NILKEYIN1 KEYIN0IIC SIO IIC CKOPW on ColswSection Exploded Views General SectionFront Panel Section LCD901Mechanism Deck MG-164MA-138 157 156 158159 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 CA680X501 502 503505 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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