Sony MDS-S50 Initial Setting of Adjustment Value, Temperature Compensation Offset Adjutment

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5-7. INITIAL SETTING OF ADJUSTMENT VALUE

Note:

Mode which sets the adjustment results recorded in the non-vola- tile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value.

If initial setting is performed, perform all adjustments again ex- cluding the temperature compensation offset adjustment.

For details of the initial setting, refer to “5-4. Precautions on Ad- justments” and execute the initial setting before the adjustment as required.

Setting Procedure :

1.Rotate the lAMS L knob to display “ADJ CLEAR”.

2.Press the YES button. “Complete!” will be displayed momen- tarily and initial setting will be executed, after which “ADJ CLEAR” will be displayed.

5-8. RECORDING AND DISPLAYING THE Iop

INFORMATION

The IOP data can be recorded in the non-volatile memory. The Iop value on the label of the optical pick-up and the Iop value after the adjustment will be recorded. Recording these data eliminates the need to read the label on the optical pick-up.

Recording Procedure :

1.While pressing the lAMS L knob and x button, con- nect the power plug to the outlet, and release the l AMS

L knob and x button.

2.Rotate the lAMS L knob to display “[Service]”, and press the YES button.

3.Rotate the lAMS L knob to display “Iop.Write”, and press the YES button.

4.The display becomes Ref=@@@.@ (@ is an arbitrary number) and the numbers which can be changed will blink.

5.Input the Iop value written on the optical pick-up.

To select the number : Rotate the lAMS L knob.

To select the digit : Press the lAMS L knob

6.When the YES button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).

7.As the adjustment results are recorded for the 6 value. Leave it as it is and press the YES button.

8.“Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will be- come “Iop Write”.

Display Procedure :

1.Rotate the lAMS L knob to display “Iop.Read”.

2.“@@.@/##.#” is displayed and the recorded contents are displayed.

@@.@ indicates the Iop value labeled on the pick-up. ##.# indicates the Iop value after adjustment

3.To end, press the lAMS L button or MENU/NO button to display “Iop Read”.

MDS-JE470

5-9. TEMPERATURE COMPENSATION OFFSET ADJUTMENT

Save the temperature data at that time in the non-volatile memory as 25 ˚C reference data.

Note :

1.Usually, do not perform this adjustment.

2.Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C. Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient temperature of 22 ˚C to 28 ˚C.

3.When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient tempera-

ture.

Adjusting Procedure :

1.Rotate the lAMS L knob and display “TEMPADJUST”.

2.Press the YES button and select the “TEMP ADJUST” mode.

3.“TEMP = [OK]” and the current temperature data will be displayed.

4.To save the data, press the YES button.

When not saving the data, press the MENU/NO button.

5.When the YES button is pressed, “TEMP = SAVE” will be displayed and turned back to “TEMP ADJUST” display then. When the MENU/NO button is pressed, “TEMP ADJUST” will be displayed immediatelly.

Specified Value :

The “TEMP = ” should be within “E0 - EF”, “F0 - FF”, “00 - 0F”, “10 - 1F” and “20 - 2F”.

5-10. LASER POWER ADJUSTMENT

Check the Iop value of the optical pick-up before adjustments. (Refer to 5-8. Recording and Displaying Iop Information.)

Connection :

Laser power

 

 

meter

 

 

 

 

 

 

 

 

Optical pick-up objective lens

Digital volt meter

BD board

CN105 pin 1 (I+3V)

CN105 pin 2 (IOP)

Adjusting Procedure :

1.Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the m button or M button to move the optical pick-up.)

Connect the digital volt meter to CN105 pin 1 (I+3V) and CN105 pin 2 (IOP).

2.Rotate the lAMS L knob and display “LDPWR ADJUST”.

(Laser power : For adjustment)

3.Press the YES button once and display “LD 0.9 mW $ ”.

4.Rotate the lAMS L knob so that the reading of the laser power meter becomes the specified value. Press the YES button after setting the range knob of the laser power meter, and save the adjustment results. (“LD SAVE $ ” will be displayed for a moment.)

5.Then “LD 7.0 mW $ ” will be displayed.

6.Rotate the lAMS L knob so that the reading of the

laser power meter becomes the specified value, press the YES button and save it.

Note : Do not perform the emission with 7.0 mW more than 15 seconds continuously.

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Contents 873-891-11 SpecificationsSELF-DIAGNOSIS Function MDS-JE470Three- or five Digit code Cause/Remedy Message Items of Error History Mode Items and Contents Exploded Views Table of ContentsDisassembly DiagramsLeakage MDS-JE470 Section Service NotesSafety CHECK-OUT Flexible Circuit Board RepairingIOP JIG for Checking BD Board WaveformRecord Precedure Optical PICK-UP Block Type Discrimination KSN-260EForced Reset Checks Prior to Parts Replacement and AdjustmentsMain Board Component Side Bit Binary Retry Cause Display ModeHigher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary Button Descriptions MDS-JE470 Section GeneralDisassembly Flow MDS-JE470 Section DisassemblyFront Panel Section PT BOARD, VOL-SEL Board SP model Main BoardOver Light Head HR901, BD Board Mechanism Deck Section MDM-7ALoading Motor Assy M103 Holder AssyOptical PICK-UP Sled Motor Assy M102, SliderSpindle Moter Assy M101 Exiting the Test Mode MDS-JE470 Section Test ModePrecautions for USE of Test Mode Setting the Test ModeDisplay Selecting the Test ModeMENU/NO Operating the Continuous Playback ModeFunctions of Other Buttons Test Mode DisplaysMode display Error rate displayInformation When Memory NG is DisplayedMeanings of Other Displays Automatic SELF-DIAGNOSIS FunctionParts Replacement and Adjustment MDS-JE470 Section Electrical AdjustmentsCheck before replacement Adjustment flow Precautions for USE of Optical PICK- UP KMS-260B/260E Precautions for Checking Laser Diode EmissionPrecautions for Adjustments Checks Prior to Repairs Using the Continuously Recorded DiscTraverse Waveform Auto CheckOther Checks Traverse CheckSelf-Recording/playback Check Play Check MO Error Rate CheckCD Error Rate Check Focus Bias CheckTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Iop NV Save Traverse AdjustmentFocus Bias Adjustment MO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Circuit Boards Location MDS-JE470 Section DiagramsMain Board For schematic diagramsFor printed wiring boards BD BoardIC171 Block Diagrams BD SectionIC190 IC360 2/2 Main SectionIC1 2/2 Semiconductor SemiconductorOVERBoard Board Main Display Board See page 51 for IC Block Diagrams Schematic Diagram Main /2IC1 KEY-SW Board Indicator Tube Schematic Diagram Display Section230V PT BoardSchematic Diagram Power Section IC101 CXA2523AR BD Board IC Block DiagramsIC500 AK4524 Main Board IC101 CXA2523AR RF Amplifier BD Board IC PIN Function DescriptionPin No Pin Name Description Sqsy Pin No Pin Name DesriptionMvci Abbreviation EFM Eight to Fourteen Modulation IC1 M30803MG-107FP System Control Main Board ADA. Latch STB Chassis Section Section Exploded ViewsFL750 Mechanism MDM-7A M101 Coils Electrical Parts ListMetal Chip MDS-JE470 KEY-SW Main DisplayCN2 MDS-JE470 MainTC7WHU04FUTE12R Screw +KTP 2X6 TYPE2 NON-SLIT MDS-JE470 Main VOL-SELMDS-JE470 MDS-JE470 Revision History

MDS-S50 specifications

The Sony MDS-S50 is a pinnacle of MiniDisc technology, offering audiophiles a compact and reliable way to enjoy high-quality audio. Launched in the early 2000s, it epitomizes the innovation that Sony was known for during this period, combining functionality with sleek design.

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