Sony MDS-JD320 service manual Section Test Mode

Page 13

SECTION 4

TEST MODE

4-1. PRECAUTIONS FOR USE OF TEST MODE

1As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is

stopped before setting and removing it.

Even if the ¤EJECT button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating.

Therefore, it will be ejected while rotating.

Be sure to press the ¤EJECT button after pressing the EDIT/NO button and the rotation of disc is stopped.

2The erasing-protection tab is not detected in the test mode. Therefore, operating in the recording laser emission mode and pressing the rREC button, the recorded contents will be erased regardless of the position of the tab. When using a disc that is not to be erased in the test mode, be careful not to enter the continuous recording mode and traverse adjustment mode.

4-1-1. Recording laser emission mode and operating buttons

1.Continuous recording mode (CREC MODE)

2.Traverse adjustment mode (EFBAL ADJUST)

3.Laser power adjustment mode (LDPWR ADJUST)

4.Laser power check mode (LDPWR CHECK)

5.When pressing the rREC button.

4-2. SETTING THE TEST MODE

While pressing the AMS knob, insert the power plug into the power supply outlet, and release the AMS knob.

4-3. EXITING THE TEST MODE

When the 1/u button is pressed, it becomes in the STANDBY mode. Or unplug the power plug from an outlet.

4-4. BASIC OPERATIONS OF THE TEST MODE

All operations are performed using the AMS knob, YES button, and EDIT/NO button.

The functions of these buttons are as follows.

Function name

Function

 

 

AMS knob

Changes parameters and modes

 

 

YES button

Proceeds onto the next step. Finalizes input.

 

 

EDIT/NO button

Returns to previous step. Stops operations.

 

 

4-5. SELECTING THE TEST MODE

Thirteen test modes are selected by turning the AMS knob.

Display

Contents

 

 

TEMP ADJUST

Temperature compensation offset adjustment

 

 

LDPWR ADJUST

Laser power adjustment

 

 

LDPWR CHECK

Laser power check

 

 

EFBAL ADJUST

Traverse adjustment

 

 

FBIAS ADJUST

Focus bias adjustment

 

 

FBIAS CHECK

Focus bias check

 

 

CPLAY MODE

Continuous playback mode

 

 

CREC MODE

Continuous recording mode

 

 

DETRK CHECK

Detrack check

 

 

S curve CHECK

S curve check ∗

 

 

EEP MODE

Non-volatile memory mode ∗

 

 

MANUAL CMD

Manual command transfer mode ∗

 

 

SVDATA READ

Data reading out mode ∗

 

 

For detailed description of each adjustment mode, refer to “5. Electrical Adjustments”.

If a different adjustment mode has been selected by mistake, press the EDIT/NO button to exit from this mode.

*The EEP MODE, S curve CHECK, MANUAL CMD and SVDATA READ are not used in servicing. If set accidentally, press the EDIT/NO button immediately to exit this mode.

— 13 —

Page 12 Page 14
Image 13
Page 12 Page 14
Contents MDM-3GC SpecificationsVarnig Flexible Circuit Board RepairingDisassembly Table of ContentsDiagrams Exploded ViewsSelf-Diagnosis Function SELF-DIAGNOSIS FunctionSection Servicing Note Forced ResetJIG for Checking BD Board Waveform Main Board Component SideFluorescent Display Tube Signs Retry Cause Display ModeHexadecimal nBinary Conversion Table Location of Parts and Controls Section GeneralCase and Front Panel Assembly Section DisassemblyBracket T, L and R SUB Chassis BD BoardOver Write Head Shutter AssemblySlider Complete Assembly Section Test Mode Operating the Continuous Recording Mode Operating the Continuous Playback ModeNon-Volatile Memory Mode MIDFunctions of Other Buttons Test Mode DisplaysMeanings of Other Displays Precautions for Checking Laser Diode Emissinon Section Electrical AdjustmentsPrecautions for USE of Optical PICK- UP KMS-260A Precautions for AdjustmentsLaser Power Adjustment Temperature Compensation Offset AdjutmentSpecified Value Traverse Waveform Traverse AdjustmentError Rate Check Focus Bias AdjustmentAdjusting Points and Conneting Points MDS-JE320Block Diagrams MDS-JE320 Section DiagramsOptical PICK-UP Block MainREC Main SectionFor 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 Main Board Printed Wiring Board Main SectionSchematic 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 IC152 BH6511FS IC121 CXD2652ARIC192 L88MS33T IC171 XL24C01AFMain section IC301 LA9615 IC307 CXD8607NIC311 LB1641 IC308 M5218AL IC309 LA5620 IC310 M5293LIC101 RF Amplifier CXA2523R Pin No Pin Name Function IC PIN FunctionsMNT1 Shck MNT0 FOKMNT2 Xbusy MNT3 SlocPin No Pin Name Function Ffdr TfdrFrdr FS4IC307 A/D, D/A converter CXD8607N Pin No Pin Name Function TEST3 TEST2Lvdd LvssPower Down Timer SWDaout ChuckMNT3 MNT2LED0 BUS OUTBeep DIG-RSTDA-RST Dsel A, Dsel BMain Section Section Exploded Views6059 Front Panel SectionPanel ASSY, Front US,CND Button Main201 202 Mechanism Deck MDM-3GC203 204 205 206 207 209 208253 254 259 252257 258 260 271 Section Electrical Parts List Inductor Chip TC74ACT540FSShort InductorControl SW Display Eject SW Main NJM79L12A NJM78L06ASN74HCU04AN 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.
Top Page Image Contents