Sony MDS-PC2 Mvci, Asyo, Asyi, Avdd, Bias, Rfi, Avss, Pco, Fili, Filo, Cltv, AUX1, Adio, Adrt

Page 49

Pin No.

Pin Name

I/O

Function

 

 

 

 

48

D1

I/O

 

 

 

 

 

49

D0

I/O

Data input/output for DRAM

 

 

 

 

50, 51

D2, D3

I/O

 

 

 

 

 

52

MVCI

I (S)

Clock input from an external VCO (Fixed at “L”)

 

 

 

 

53

ASYO

O

Playback EFM duplex signal output

 

 

 

 

54

ASYI

I (A)

Playback EFM comparator slice level input

 

 

 

 

55

AVDD

—

+3V power supply (Analog)

 

 

 

 

56

BIAS

I (A)

Playback EFM comparator bias current input

 

 

 

 

57

RFI

I (A)

Playback EFM RF signal input

 

 

 

 

58

AVSS

—

Ground (Analog)

 

 

 

 

59

PCO

O (3)

Phase comparison output for the recording/playback EFM master PLL

 

 

 

 

60

FILI

I (A)

Filter input for the recording/playback EFM master PLL

 

 

 

 

61

FILO

O (A)

Filter output for the recording/playback EFM master PLL

 

 

 

 

62

CLTV

I (A)

Internal VCO control voltage input for the recording/playback EFM master PLL

 

 

 

 

63

PEAK

I (A)

Light amount signal peak hold input from the CXA2523R

 

 

 

 

64

BOTM

I (A)

Light amount signal bottom hold input from the CXA2523R

 

 

 

 

65

ABCD

I (A)

Light amount signal input from the CXA2523R

 

 

 

 

66

FE

I (A)

Focus error signal input from the CXA2523R

 

 

 

 

67

AUX1

I (A)

Auxiliary A/D input

 

 

 

 

68

VC

I (A)

Middle point voltage (+1.5V) input from the CXA2523R

 

 

 

 

69

ADIO

O (A)

Monitor output of the A/D converter input signal (Not used)

 

 

 

 

70

AVDD

—

+3V power supply (Analog)

 

 

 

 

71

ADRT

I (A)

A/D converter operational range upper limit voltage input (Fixed at “H”)

 

 

 

 

72

ADRB

I (A)

A/D converter operational range lower limit voltage input (Fixed at “L”)

 

 

 

 

73

AVSS

—

Ground (Analog)

 

 

 

 

74

SE

I (A)

Sled error signal input from the CXA2523R

 

 

 

 

75

TE

I (A)

Tracking error signal input from the CXA2523R

 

 

 

 

76

DCHG

I (A)

Connected to +3V power supply

 

 

 

 

77

APC

I (A)

Error signal input for the laser digital APC (Fixed at “L”)

 

 

 

 

78

ADFG

I (S)

ADIP duplex FM signal input from the CXA2523R (22.05 ± 1 kHz)

 

 

 

 

79

F0CNT

O

Filter f0 control output to the CXA2523R

 

 

 

 

80

XLRF

O

Control latch output to the CXA2523R

 

 

 

 

81

CKRF

O

Control clock output to the CXA2523R

 

 

 

 

82

DTRF

O

Control data output to the CXA2523R

 

 

 

 

83

APCREF

O

Reference PWM output for the laser APC

 

 

 

 

84

TEST0

O

PWM output for the laser digital APC (Not used)

 

 

 

 

85

TRDR

O

Tracking servo drive PWM output (–)

 

 

 

 

• Abbreviation

EFM: Eight to Fourteen Modulation

PLL : Phase Locked Loop

VCO: Voltage Controlled Oscillator

49

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Contents MDM-5A SpecificationsInput SELF-DIAGNOSIS FunctionProgram Items of Error History Mode Items and Contents Parts No Flexible Circuit Board RepairingDisassembly Table of ContentsDiagrams Exploded ViewsJIG for Checking BD Board Waveform Section Servicing NoteIOP TEORecord Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and AdjustmentsREC/PLAY Fluorescent Display Tube ALL Lighting and KEY Check Mode Forced ResetPower Board Component Side Higher Bits Lower Bits Hexa Retry Cause Display ModeCause of Retry Occurring conditions Bit BinaryHigher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary Front Panel Section GeneralCase and Front Panel Section DisassemblyMD Mechanism Base Unit MBU-5A and BD Board Slider CAMSW Board and Loading Motor M103 Precautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeGroup Selecting the Test ModeNon-Volatile Memory Mode EEP Mode Operating the Continuous Playback ModeMID OUTFunctions of Other Buttons Test Mode DisplaysMeanings of Other Displays Parts Replacement and Adjustment Section Electrical AdjustmentsPrecautions for USE of Optical PICK- UP KMS-260A Precautions for Checking Laser Diode EmissinonPrecautions for Adjustments Creating Continuously Recorded DiscLaser Power Check Temperature Compensation Offset CheckChecks Prior to Repairs Specified ValueCD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check EjectTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment 6EJECT Focus Bias AdjustmentAuto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentBD Board Side B Adjusting Points and Connecting PointsCircuit Boards Location Section DiagramsMDS-PC2 Block Diagram BD SectionPB Digital out REC DigitalLD-LOVO Main SectionPanel Section WaveformsSee page 30 for Circuit Boards Location Printed Wiring Board BD SectionSchematic Diagram BD 1/2 Section Schematic Diagram BD 2/2 Section Schematic Diagram Main 1/2 Section Panel Schematic Diagram Main 2/2 SectionBoard Power Printed Wiring Board Main SectionBD Board Panel Schematic Diagram Panel Section Main Board Printed Wiring Board Panel SectionSchematic Diagram Power Section Main Board BD Board Printed Wiring Board Power SectionPrinted Wiring Board BD Switch Section Schematic Diagram BD Switch Section IC Block DiagramBD section IC101 CXA2523AR IC152 BH6511FS-E2 IC121 CXD2654RIC441 LB1830M Main section IC301 UDA1341TS/N2IC101 RF Amplifier CXA2523AR BD board IC PIN FunctionsPin No Pin Name Function MNT1 Shck MNT0 FOKMNT2 Xbusy MNT3 SlocAsyo MvciAsyi AvddFfdr TfdrFrdr FS4IC501 System Control M30620MC-406FP Main board PB-P OPT SEL Mode SELREC/PB SDASection Exploded Views CORD, Power UKCabinet Section Insulator F Mechanism Section MDM-5A509 4-988-466-21 Spring ELECTROSTATIC, Leaf 526 A-4680-417-A Holder Complete AssyHEAD, Over Light Base Unit Section MBU-5AMotor ASSY, Sled Back UP Section Electrical Parts List Main Elect CONNECTOR, FFC 15PGround Terminal Ferrite BeadPIN, Connector 2P PLUG, Connector 6PMain Panel VibratorPanel Power Power SW 928-916-11

MDS-PC2 specifications

The Sony MDS-PC2 is a compact yet powerful digital MiniDisc recorder that was designed to bring studio-quality recording capabilities to the consumer level. Launched in the late 1990s, this device was particularly notable for its versatility and advanced audio technologies, making it a favorite among audiophiles and home studio enthusiasts alike.

One of the standout features of the MDS-PC2 is its ability to record and playback audio with exceptional clarity. It utilizes the MiniDisc format, which employs a magneto-optical technology that allows for higher-quality recordings compared to traditional cassette formats. The MDS-PC2 supports various audio bit rates, including standard Stereo at 292 kbps and long play modes, which double the recording time at the cost of some audio fidelity. This flexibility allows users to tailor their recording settings to their specific needs.

The MDS-PC2 features an intuitive interface, including an easy-to-read LCD display that shows vital information about the track, such as its name, length, and remaining recording time. The device is equipped with multiple input options, including optical and analog connections, facilitating seamless integration into any audio setup. The built-in digital signal processor (DSP) enhances the recording quality by minimizing background noise and distortion, providing a clean and crisp listening experience.

Another notable characteristic is the MDS-PC2's editing capabilities. Users can easily create custom playlists, erase tracks, and rearrange audio sequences with a few simple commands. The unit also supports fade-in and fade-out functionalities, allowing for smooth transitions between tracks. The flexibility in editing makes it a potent tool for podcasters, musicians, and anyone looking to produce high-quality audio content.

Portability is another key aspect of the Sony MDS-PC2. Its lightweight design and durable build make it easy to transport, catering to users who are frequently on the move. Battery operation options provide additional convenience for those who wish to use the recorder away from a power source.

In summary, the Sony MDS-PC2 combines innovative technology with user-friendly features, making it an excellent choice for anyone seeking an efficient and high-quality MiniDisc recorder. Its capability to produce superior audio recordings, coupled with its adaptability and portability, has solidified its place as an essential tool for audio recording and playback in various settings.
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