Sony MDS-JE640 - Manual

Sony MDS-JE640

Sony MDS-JE640 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – SELF-DIAGNOSIS FUNCTION; General; Power requirements; Supplied accessories; DIGITAL O UT; Self-diagnosis function; The recording was not made properly.
  • Page 3 – ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS; Selecting the Test Mode; Display
  • Page 4 – Table of Error Codes
  • Page 5 – CAUTION; • Ke e p t h e t e m p e r a t u r e o f s o l d e r i n g i r o n a r o u n d 2 7 0 ̊ C; NOTES ON LASER DIODE EMISSION CHECK
  • Page 6 – JIG FOR CHECKING BD BOARD WAVEFORM; VC
  • Page 8 – Remove the short-pin attached to CN420, and then attach it again.
  • Page 9 – RETRY CAUSE DISPLAY MODE; Example
  • Page 12 – Follow the disassembly procedure in the numerical order given.
  • Page 13 – PT board
  • Page 15 – Function name; The following are two methods of entering the test mode.
  • Page 16 – tally, press the MENU/NO button to exit the mode immediately.
  • Page 18 – Error rate display
  • Page 19 – If a disc is in the mechanical deck, it will be ejected forcibly.; Procedure; test mode will be displayed.
  • Page 20 – Check before replacement
  • Page 21 – Adjustment flow
  • Page 22 – -7. Initial setting of adjustment values; -2. PRECAUTIONS FOR CHECKING LASER DIODE; Optical pick-up flexible board; Optical; Parts to be replaced
  • Page 23 – -5. USING THE CONTINUOUSLY RECORDED DISC
  • Page 26 – INFORMATION; Recording Procedure :; ADJUTMENT; Adjusting Procedure :
  • Page 29 – ADJUSTMENT
  • Page 30 – -17. ADJUSTING POINTS AND CONNECTING POINTS
  • Page 31 – For schematic diagrams.
  • Page 33 – – MAIN SECTION –
  • Page 35 – • Semiconductor; Location; • Semiconductor; Location; Location
  • Page 43 – -11. PRINTED WIRING BOARD – POWER SECTION –
  • Page 44 – -12. PRINTED WIRING BOARD – DISPLAY SECTION –
  • Page 45 – -13. SCHEMATIC DIAGRAM – DISPLAY SECTION – • See page 34 for Waveforms.
  • Page 52 – • IC1 M30805SGP SYSTEM CONTROL (MAIN BOARD)
  • Page 54 – Description; SECTION 7; • Color Indication of Appearance Parts Example:
  • Page 58 – SP; BD
  • Page 61 – MAIN
  • Page 66 – Sony Corporation; Audio Entertainment Group
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MDS-JE640

SPECIFICATIONS

SERVICE MANUAL

MINIDISC DECK

Model Name Using Similar Mechanism

NEW

MD Mechanism Type

MDM-7A

Optical Pick-up Type

KMS-260B/J1N

Canadian Model

AEP Model

UK Model

E Model

US and foreign patents licensed form Dolby Laboratories
Licensing Corporation.

Inputs

Outputs

System

MiniDisc digital audio system

Disc

MiniDisc

Laser

Semiconductor laser (

λ

= 780 nm)

Emission duration: continuous

Laser output

MAX 44.6

µ

W

1)

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.

Laser diode

Material: GaAlAs

Revolutions (CLV)

400 rpm to 900 rpm

Error correction

ACIRC (Advanced Cross Interleave
Reed Solomon Code)

Sampling frequency

44.1 kHz

Coding

ATRAC (Adaptive TRansform
Acoustic Coding)/ATRAC 3

Modulation system

EFM (Eight-to-Fourteen
Modulation)

Number of channels

2 stereo channels

Frequency response

5 to 20,000 Hz

±

0.3 dB

Signal-to-noiseratio

Over 98 dB during play

Wow and flutter

Below measurable limit

ANALOG IN

Jack type: phono
Impedance: 47 k

Ω

Rated input: 500 mVrms
Minimum input: 125 mVrms

DIGITAL IN

Connector type: square optical
Impedance: 660 nm (optical wave
length)

DIGITAL OPTICAL IN
(AEP, UK, CIS models)

Connector type: square optical
Impedance: 660 nm (optical wave
length)

DIGITAL CO AXIAL IN
(AEP, UK, CIS models)

Jack type: phono
Impedance: 75

Ω

Rated input: 0.5 Vp-p,

±

20 %

PHONES (MDS-JE640
only)

Jack type: stereo phone
Rated output: 28 mW
Load impedance: 32

Ω

ANALOG OUT

Jack type: phono
Rated output: 2 Vrms (at 50
k

Ω

)

Load impedance: over 10 k

Ω

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Summary

Page 2 - SELF-DIAGNOSIS FUNCTION; General; Power requirements; Supplied accessories; DIGITAL O UT; Self-diagnosis function; The recording was not made properly.

2 SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes whichshow the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the follow...

Page 3 - ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS; Selecting the Test Mode; Display

3 1. While pressing the AMS knob and x button, connect the power plug to the outlet, and release the AMS knob and x button. When the test mode is set, “[Check]” will be displayed. 2. Rotate the AMS knob and when “[Service]” is displayed, press the YES button.3. Rotate the AMS knob and display “Err D...

Page 4 - Table of Error Codes

4 Description TABLE OF CONTENTS 1. SERVICING NOTES ............................................. 5 2. GENERAL ........................................................................ 11 3. DISASSEMBLY 3-1. Upper Case (408226) .......................................................... 123-2. Front Pa...

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