Sony MDS-JD320 service manual Pin No Pin Name Function

Page 40

Pin No.

Pin Name

I/O

Function

 

 

 

 

 

46

 

D1

I/O

 

 

 

 

 

 

47

 

D0

I/O

Data input/output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

 

 

 

 

 

48, 49

 

D2, D3

I/O

 

 

 

 

 

 

50

 

MVCI

I (S)

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

 

 

 

 

 

51

 

ASYO

O

Playback EFM duplex signal output

 

 

 

 

 

52

 

ASYI

I (A)

Playback EFM comparator slice level input

 

 

 

 

 

53

 

AVDD

—

+3V power supply (Analog)

 

 

 

 

 

54

 

BIAS

I (A)

Playback EFM comparator bias current input

 

 

 

 

 

55

 

RFI

I (A)

Playback EFM RF signal input

 

 

 

 

 

56

 

AVSS

—

Ground (Analog)

 

 

 

 

 

57

 

PDO

O (3)

Phase comparison output for the clock playback analog PLL of the playback EFM

 

(Not used)

 

 

 

 

 

 

 

 

 

58

 

PCO

O (3)

Phase comparison output for the recording/playback EFM master PLL

 

 

 

 

 

59

 

FILI

I (A)

Filter input for the recording/playback EFM master PLL

 

 

 

 

 

60

 

FILO

O (A)

Filter output for the recording/playback EFM master PLL

 

 

 

 

 

61

 

CLTV

I (A)

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

 

 

 

 

 

62

 

PEAK

I (A)

Light amount signal peak hold input from the CXA2523R

 

 

 

 

 

63

 

BOTM

I (A)

Light amount signal bottom hold input from the CXA2523R

 

 

 

 

 

64

 

ABCD

I (A)

Light amount signal input from the CXA2523R

 

 

 

 

 

65

 

FE

I (A)

Focus error signal input from the CXA2523R

 

 

 

 

 

66

 

AUX1

I (A)

Auxiliary A/D input

 

 

 

 

 

67

 

VC

I (A)

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

 

 

 

 

 

68

 

ADIO

O (A)

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

 

 

 

 

 

69

 

AVDD

—

+3V power supply (Analog)

 

 

 

 

 

70

 

ADRT

I (A)

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

 

 

 

 

 

71

 

ADRB

I (A)

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

 

 

 

 

 

72

 

AVSS

—

Ground (Analog)

 

 

 

 

 

73

 

SE

I (A)

Sled error signal input from the CXA2523R

 

 

 

 

 

74

 

TE

I (A)

Tracking error signal input from the CXA2523R

 

 

 

 

 

75

 

AUX2

I (A)

Auxiliary A/D input (Fixed at “L”)

 

 

 

 

 

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

 

LDDR

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

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Contents Specifications MDM-3GCFlexible Circuit Board Repairing VarnigTable of Contents DisassemblyDiagrams Exploded ViewsSELF-DIAGNOSIS Function Self-Diagnosis FunctionForced Reset Section Servicing NoteJIG for Checking BD Board Waveform Main Board Component SideRetry Cause Display Mode Fluorescent Display Tube SignsHexadecimal nBinary Conversion Table Section General Location of Parts and ControlsCase and Front Panel Assembly Section DisassemblyBracket T, L and R BD Board SUB ChassisShutter Assembly Over Write HeadSlider Complete Assembly Section Test Mode Operating the Continuous Playback Mode Operating the Continuous Recording ModeNon-Volatile Memory Mode MIDFunctions of Other Buttons Test Mode DisplaysMeanings of Other Displays Section Electrical Adjustments Precautions for Checking Laser Diode EmissinonPrecautions for USE of Optical PICK- UP KMS-260A Precautions for AdjustmentsLaser Power Adjustment Temperature Compensation Offset AdjutmentSpecified Value Traverse Adjustment Traverse WaveformFocus Bias Adjustment Error Rate CheckAdjusting Points and Conneting Points MDS-JE320MDS-JE320 Section Diagrams Block DiagramsOptical PICK-UP Block MainMain Section RECFor printed wiring boards For schematic diagramsWaveform Location Printed Wiring Board BD SectionSemiconductor Schematic Diagram BD /2 See page 26 for Waveforms See page 49 for IC Block Diagrams Printed Wiring Board Main Section Main BoardSchematic Diagram Main /3 MDS-JE320 Schematic Diagram Main /3 Display Board Printed Wiring Board Display SectionEject SW Board Schematic Diagram Display Section Printed Wiring Board Switch Section Schematic Diagram Switch Section IC121 CXD2650R IC Block DiagramsBD section IC101 CXA2523R IC121 CXD2652AR IC152 BH6511FSIC171 XL24C01AF IC192 L88MS33TMain section IC301 LA9615 IC307 CXD8607NIC308 M5218AL IC309 LA5620 IC310 M5293L IC311 LB1641IC PIN Functions IC101 RF Amplifier CXA2523R Pin No Pin Name FunctionMNT0 FOK MNT1 ShckMNT2 Xbusy MNT3 SlocPin No Pin Name Function Tfdr FfdrFrdr FS4IC307 A/D, D/A converter CXD8607N Pin No Pin Name Function TEST2 TEST3Lvdd LvssTimer SW Power DownDaout ChuckMNT2 MNT3LED0 BUS OUTDIG-RST BeepDA-RST Dsel A, Dsel BSection Exploded Views Main SectionFront Panel Section 6059Panel ASSY, Front US,CND Button MainMechanism Deck MDM-3GC 201 202203 204 205 206 207 209 208253 254 259 252257 258 260 271 Section Electrical Parts List TC74ACT540FS Inductor ChipShort InductorControl SW Display Eject SW Main NJM78L06A NJM79L12ASN74HCU04AN Line FilterMDS-JE320 Main

MDS-JD320 specifications

The Sony MDS-JD320 is a MiniDisc recorder that exemplifies the cutting-edge technology of the late 1990s and early 2000s. Designed for both amateur and professional audiophiles, it delivers superior sound quality and an array of features that enhance user experience and functionality. Key to its appeal is its remarkable sound reproduction capabilities, which are achieved through Sony's proprietary technologies, including the ATRAC (Adaptive Transform Acoustic Coding) compression format. This format allows for efficient audio storage without sacrificing sound fidelity, ensuring that each recording is as rich and dynamic as the original source.

One of the standout features of the MDS-JD320 is its ability to create, edit, and playback CDs and MiniDiscs with remarkable ease. Thanks to its digital optical input and output, users can connect the device to various audio sources, such as CD players or mixing boards, to make high-quality recordings. The device supports various recording modes, including long play, which enables users to extend their recording time without significant compromise on audio quality.

The MDS-JD320 also boasts a user-friendly interface, which includes an LCD display that conveniently shows essential information such as track numbers, remaining time, and recording mode. Furthermore, an intuitive remote control offers added convenience, allowing users to navigate through their music collections without having to physically interact with the device.

In terms of connectivity, the MDS-JD320 features not only digital inputs and outputs but also analog connections, making it versatile for various setups. Additionally, the device includes extensive editing features, such as track splitting, combining, and renaming, empowering users to customize their recordings easily.

Moreover, the MDS-JD320's compact design fits seamlessly into any audio setup, making it an attractive choice for both home recording enthusiasts and professionals. Its durable build quality ensures longevity, while its performance continues to impress even in today's digital audio landscape.

With its powerful combination of advanced technologies, ease of use, and high-quality audio performance, the Sony MDS-JD320 remains a sought-after component for collectors and audiophiles alike, representing an enduring legacy in the field of portable digital media solutions.
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