Sony 4-216-840-0 Initial Setting of Adjustment Value, Temperature Compensation Offset Adjustment

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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 tempera- ture 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 “4. Precautions on Adjustments” and execute the initial setting before the adjustment as required.

Setting Procedure :

1.Turn the =AMS + knob to display “ADJ CLEAR (C24)”.

2.Press the [YES] button. “Complete!” will be displayed mo- mentarily and initial setting will be executed, after which “ADJ CLEAR” will be displayed.

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 elimi- nates the need to read the label on the optical pick-up.

Recording Procedure :

1.Turn the =AMS + knob to display “Iop Write” (C28), and press the [YES] button.

2.The display becomes Ref=@@@.@ (@ is an arbitrary num- ber) and the numbers which can be changed will blink.

3.Input the IOP value written on the optical pick-up.

To select the number : Turn the = AMS + knob.

To select the digit : Press the = AMS + knob

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

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

6.“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.Turn the = AMS + knob to display “Iop Read”(C27).

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

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

3.To end, press the =AMS + button or [MENU/NO] but- ton to display “Iop Read”.

9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT

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 tem- perature of this part has become the ambient temperature.

Adjusting Procedure :

1.Turn the =AMS + knob and display “TEMP ADJUST” (C09).

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 AD- JUST” will be displayed immediately.

Specified Value :

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

10. LASER POWER ADJUSTMENT

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

Connection :laser power meter

Optical pick-up objective lens

digital voltmeter

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 [ÊÊÊÊÊÊ]0 button or [ÊÊÊÊÊÊ]) button to move the optical pick-up.)

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

2.Turn the = AMS + knob and display “LDPWR AD- JUST” (C10).

(Laser power : For adjustment)

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

4.Turn the =AMS + knob so that the reading of the laser power meter becomes 0.85 to 0.91 mW. Press the [YES] but- ton after setting the range knob of the laser power meter, and

save the adjustment results. (“LD SAVE $ ” will be dis- played for a moment.)

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

6.Turn the =AMS + knob so that the reading of the laser power meter becomes 6.9 to 7.1 mW, 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 MDS-JE520 SpecificationsMDM-5A SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Diagrams Table of ContentsSection Servicing Notes Varning Flexible Circuit Board RepairingIOP JIG for Checking BD Board WaveformRecord Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and AdjustmentsPrecedure Retry Cause Display ModeHexadecimal nBinary Conversion Table Section General Cover Section DisassemblyFront Panel Section Mechanism Deck Section MDM-5A Main BoardBase Unit MBU-5A, BD Board Slider CAMSW BOARD, Loading Motor M103 Precautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeDisplay Contents Mark Group 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 EmissionPrecautions for Adjustments Laser power meterLaser Power Check Temperature Compensation Offset CheckCheck Prior to Repairs Traverse CheckCD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check Self-Recording/playback CheckTemperature Compensation Offset Adjustment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment ING CONTINUOUSLY-RECORDED Disc Focus Bias AdjustmentAuto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjustment Location IC PIN Function Description Section DiagramsXlat MNT2 XbusySrdt SensXWE XrasAsyo AsyiSrdr FS4Sfdr SprdByte AderCnvss RSTChack STBLdin LD-LOW∙ Signal Path Block Diagram MD Servo SectionPlay Analog OUT REC Analog REC DigitalREC Analog Block Diagram Main SectionCND Circuit Boards LocationSemiconductor Location MDS-M100 65 for Waveforms. See page 51 for IC Block Diagram Schematic Diagram BD Board 2/2 SeePrinted Wiring Board SW Board Schematic Diagram SW BoardMain Board IC301 ΜDA1341TS/N2 IC121 CXD2654RIC406 M62016L IC421 M5293L IC152 BH6511FS-E2MDS-M100 Semiconductor Location Schematic Diagram Main Board 1/2 See page 65 for Waveform MDS-M100 Ref. No Location D741 D742 IC761 Q741 Q742 Q767 MDS-M100 Exploded Views SectionCover Section AEP, SP Chassis Section201 206 204 205 Mechanism Section MDM-5A209 4-988-466-11 Spring ELECTROSTATIC, Leaf 221 A-4680-409-A Holder Complete AssyBase Unit Section MBU-5A AC Select BD Section Electrical Parts ListIC/TRANSISTOR Short SwitchCXA2523AR Transistor FMW1Main ConnectorCeramic Carbon InductorExcept US, CND Main Panel Panel SW Trans Sony Corporation
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