Sony MDS-JE640 specifications Specifications, Inputs, Outputs, New, MDM-7A

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MDS-JE640

SERVICE MANUAL

Canadian Model

AEP Model

UK Model

E Model

Photo: SILVER

US and foreign patents licensed form Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism	NEW

MD Mechanism Type	MDM-7A

Optical Pick-up Type	KMS-260B/J1N

SPECIFICATIONS

System

Disc

Laser

Laser output

Laser diode Revolutions (CLV) Error correction

Sampling frequency Coding

Modulation system

Number of channels Frequency response Signal-to-noiseratio Wow and flutter

MiniDisc digital audio system

MiniDisc

Semiconductor laser (λ = 780 nm) Emission duration: continuous

MAX 44.6 ∝W1)

1)This output is the value measured at a distance of

200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture.

Material: GaAlAs

400 rpm to 900 rpm

ACIRC (Advanced Cross Interleave Reed Solomon Code)

44.1 kHz

ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3

EFM (Eight-to-Fourteen

Modulation)

2 stereo channels

5 to 20,000 Hz ±0.3 dB

Over 98 dB during play

Below measurable limit

Inputs
ANALOG IN	Jack type: phono
	Impedance: 47 kΩ
	Rated input: 500 mVrms
	Minimum input: 125 mVrms
DIGITAL IN	Connector type: square optical
	Impedance: 660 nm (optical wave
	length)
DIGITAL OPTICAL IN	Connector type: square optical
(AEP, UK, CIS models)	Impedance: 660 nm (optical wave
	length)
DIGITAL COAXIAL IN	Jack type: phono
(AEP, UK, CIS models)	Impedance: 75 Ω
	Rated input: 0.5 Vp-p, ±20 %
Outputs
PHONES (MDS-JE640	Jack type: stereo phone
only)	Rated output: 28 mW
	Load impedance: 32 Ω
ANALOG OUT	Jack type: phono
	Rated output: 2 Vrms (at 50
	kΩ)
	Load impedance: over 10 kΩ
	— Continued on next page —

MINIDISC DECK

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Contents Inputs SpecificationsOutputs NEWSELF-DIAGNOSIS Function Supplied accessoriesGeneral Three- or five Digit code Cause/Remedy MessageItems of Error History Mode Items and Contents Disassembly Table of ContentsDiagrams Exploded ViewsFlexible Circuit Board Repairing Section Service NotesIOP JIG for Checking BD Board WaveformRecord Precedure Forced Reset Checks Prior to Parts Replacement and AdjustmentsMain Board Component Side Bit Binary Retry Cause Display ModeHexadecimal t Binary Conversion Table Section General Front Panel Section Section DisassemblyPT BOARD, VOL-SEL Board Main BoardBD Board Mechanism Deck Section MDM-7APrecautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeDisplay Details Mark Group Selecting the Test ModeMENU/NO Operating the Continuous Playback ModeMode display Test Mode DisplaysError rate display Functions of Other ButtonsMeanings of Other Displays When Memory NG is DisplayedAutomatic SELF-DIAGNOSIS Function InformationParts Replacement and Adjustment Section Electrical AdjustmentsCheck before replacement YES Adjustment flowPrecautions for USE of Optical PICK- UP KMS-260B Precautions for Checking Laser Diode EmissionPrecautions for Adjustments Checks Prior to Repairs Using the Continuously Recorded DiscOther Checks Auto CheckCD Error Rate Check Play Check MO Error Rate CheckTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Iop NV Save Traverse AdjustmentYES Focus Bias AdjustmentAuto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points For schematic diagrams Section DiagramsFor printed wiring boards Circuit Boards LocationSignal Path Block Diagrams BD SectionMDS-JE640 REC Analog Main SectionMain Board BD BoardDisplay Board Semiconductor Printed Wiring Board BD SectionPIN PIN Function Printed Wiring Board Main Section Side a IC1 Printed Wiring Board Main Section Side BIC2 PIN MDS-JE640 Schematic Diagram Main /3 See page 47 for IC Block Diagrams Printed Wiring Board Power Section Printed Wiring Board Display Section Schematic Diagram Display Section See page 34 for Waveforms IC101 CXA2523AR BD Board IC Block DiagramsIC400 LA5643 Main Board IC101 CXA2523AR RF Amplifier BD Board IC PIN FunctionsMNT0 FOK Mvci Tfdr IC1 M30805SGP System Control Main Board HLDA/ALE Chassis Section Section Exploded ViewsPanel ASSY, Front Silver Panel ASSY, Front Black AEP,UK,CIS,SP,MY202 220 201 213 215 216 205 218 207 Mechanism MDM-7AMotor ASSY, Spindle HEAD, Over LightMotor ASSY, Sled Motor ASSY, LoadingSection Electrical Parts List Metal Chip IC TC7WU04FUTE12RIC MC74ACT08DTR2 IC BA033FP-E2Display KEY-SW Main CONNECTOR, FFC 17P PIN, Connector 3PPIN, Connector 4P PLUG, Connector 10P DiodeAEP,UK,CIS IC SN74LVU04ANSRTransistor UN2211-TX Transistor UN2111-TXTRANSFORMER, Power CND ConnectorTRANSFORMER, Power SP,MY Composition Circuit BlockVOL-SEL Sony Corporation