Sony MDS-PC2 Initial Setting of Adjustment Value, Recording and Displaying the IOP Information

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5-7. INITIAL SETTING OF ADJUSTMENT VALUE

Note:

Mode which sets the adjustment results recorded in the non-volatile 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 excluding the temperature compensation offset adjustment.

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

Setting Procedure :

1.Press the + button to display “ADJ CLEAR”.

2.Press the ^ “PROGRAM” button. “Complete!” will be dis- played momentarily 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 pickup 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 INPUT button and p button, connect the power plug to the outlet, and release the INPUT button and p button.

2. Press the + button to display “[Service]”, and press the ^

“PROGRAM” button.

3.Rotate the + button to display “Iop.Write”, and press the ^“PROGRAM” 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 : Press the = , + buttons.

To select the digit : Press the r“PROGRAM” knob

6.When the ^ “PROGRAM” 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 ^ “PROGRAM” button.

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

Display Procedure :

1.Press the + button 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 r“PROGRAM” button or p“PROGRAM” button to display “Iop Read”.

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.Press the + button and display “TEMP ADJUST”.

2.Press the ^ “PROGRAM” 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 ^ “PROGRAM” button.

When not saving the data, press the p “PROGRAM” button.

5.When the ^ “PROGRAM” button is pressed, “TEMP = SAVE” will be displayed and turned back to “TEMP ADJUST” display then. When the p “PROGRAM” 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

CN110 pin 5 (I+3V)

CN110 pin 4 (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 =“PRO-

GRAM” button or + “PROGRAM” button to move the optical pick-up.)

Connect the digital volt meter to CN110 pin 5 (I+3V) and CN110 pin 4 (IOP).

2.Press the + button and display “LDPWR ADJUST”. (Laser power : For adjustment)

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

4.Press the = , + buttons so that the reading of the laser

power meter becomes 0.85 to 0.91 mW. Press the ^ “PRO- GRAM” 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.

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Contents MDM-5A SpecificationsInput SELF-DIAGNOSIS FunctionProgram Items of Error History Mode Items and Contents Parts No Flexible Circuit Board RepairingDisassembly Table of ContentsDiagrams Exploded ViewsJIG for Checking BD Board Waveform Section Servicing NoteIOP TEORecord Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and AdjustmentsREC/PLAY Fluorescent Display Tube ALL Lighting and KEY Check Mode Forced ResetPower Board Component Side Higher Bits Lower Bits Hexa Retry Cause Display ModeCause of Retry Occurring conditions Bit BinaryHigher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary Front Panel Section GeneralCase and Front Panel Section DisassemblyMD Mechanism Base Unit MBU-5A and BD Board Slider CAMSW Board and Loading Motor M103 Precautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeGroup Selecting the Test ModeNon-Volatile Memory Mode EEP Mode Operating the Continuous Playback ModeMID OUTFunctions of Other Buttons Test Mode DisplaysMeanings of Other Displays Parts Replacement and Adjustment Section Electrical AdjustmentsPrecautions for USE of Optical PICK- UP KMS-260A Precautions for Checking Laser Diode EmissinonPrecautions for Adjustments Creating Continuously Recorded DiscLaser Power Check Temperature Compensation Offset CheckChecks Prior to Repairs Specified ValueCD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check EjectTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment 6EJECT Focus Bias AdjustmentAuto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentBD Board Side B Adjusting Points and Connecting PointsCircuit Boards Location Section DiagramsMDS-PC2 Block Diagram BD SectionPB Digital out REC DigitalLD-LOVO Main SectionPanel Section WaveformsSee page 30 for Circuit Boards Location Printed Wiring Board BD SectionSchematic Diagram BD 1/2 Section Schematic Diagram BD 2/2 Section Schematic Diagram Main 1/2 Section Panel Schematic Diagram Main 2/2 SectionBoard Power Printed Wiring Board Main SectionBD Board Panel Schematic Diagram Panel Section Main Board Printed Wiring Board Panel SectionSchematic Diagram Power Section Main Board BD Board Printed Wiring Board Power SectionPrinted Wiring Board BD Switch Section Schematic Diagram BD Switch Section IC Block DiagramBD section IC101 CXA2523AR IC152 BH6511FS-E2 IC121 CXD2654RIC441 LB1830M Main section IC301 UDA1341TS/N2IC101 RF Amplifier CXA2523AR BD board IC PIN FunctionsPin No Pin Name Function MNT1 Shck MNT0 FOKMNT2 Xbusy MNT3 SlocAsyo MvciAsyi AvddFfdr TfdrFrdr FS4IC501 System Control M30620MC-406FP Main board PB-P OPT SEL Mode SELREC/PB SDASection Exploded Views CORD, Power UKCabinet Section Insulator F Mechanism Section MDM-5A509 4-988-466-21 Spring ELECTROSTATIC, Leaf 526 A-4680-417-A Holder Complete AssyHEAD, Over Light Base Unit Section MBU-5AMotor ASSY, Sled Back UP Section Electrical Parts List Main Elect CONNECTOR, FFC 15PGround Terminal Ferrite BeadPIN, Connector 2P PLUG, Connector 6PMain Panel VibratorPanel Power Power SW 928-916-11

MDS-PC2 specifications

The Sony MDS-PC2 is a compact yet powerful digital MiniDisc recorder that was designed to bring studio-quality recording capabilities to the consumer level. Launched in the late 1990s, this device was particularly notable for its versatility and advanced audio technologies, making it a favorite among audiophiles and home studio enthusiasts alike.

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In summary, the Sony MDS-PC2 combines innovative technology with user-friendly features, making it an excellent choice for anyone seeking an efficient and high-quality MiniDisc recorder. Its capability to produce superior audio recordings, coupled with its adaptability and portability, has solidified its place as an essential tool for audio recording and playback in various settings.
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