Sony MDS-JE530 25, Focus Bias Check, C PLAY Checking MO Error Rate Check, CD Error Rate Check

Page 25
6-4. Focus Bias Check

9.Press the [YES] button display “EFB = 6-5. C PLAY CheckingCD Error Rate Check MO-P”.

Then, the optical pick-up moves to the pit area automatically and servo is imposed.

10.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob.

(Traverse Waveform)

A

VC

B

Specified value : Below 10% offset value

Offset value (%) = IA – BI X 100 2 (A + B)

11.Press the [YES] button display “EF MO CHECK” The disc stops rotating automatically.

12.Press the [ÊÊÊÊÊEJECT]¤ button and remove the disc.

13.Load the check disc (MD) TDYS-1.

14.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “EF CD CHECK” (C04).

15.Press the [YES] button and display “EFB = 6-6. Self-Recording/playback Check– 25 –Manual backgroundManual background CD”. Servo is imposed automatically.

16.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob.

(Traverse Waveform)

A

VC

B

Specified value : Below 10% offset value

Offset value (%) = IA – BI X 100 2 (A + B)

17.Press the [YES] button and display “EF CD CHECK”.

18.Press the [ÊÊÊÊÊEJECT]¤ button and take out the check disc.

6-4. Focus Bias Check

Change the focus bias and check the focus tolerance amount. Checking Procedure :

1.Load the test disk (MDW-74/AU-1).

2.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “CPLAY MODE” (C30).

3.Press the [YES] button twice and display “CPLAY MID”.

4.Press the [MENU/NO] button when “C = Manual backgroundManual backgroundManual backgroundManual background AD = Manual backgroundManual background ” is displayed.

5.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “FBIAS CHECK” (C05).

6.Press the [YES] button and display “ Manual backgroundManual backgroundManual backgroundManual background /Manual backgroundManual background c = Manual backgroundManual background ”.

The first four digits indicate the C1 error rate, the two digits after [/] indicate ADER, and the 2 digits after [c =] indicate the focus bias value.

Check that the C1 error is below 50 and ADER is below 2.

7.Press the [YES] button and display “ Manual backgroundManual backgroundManual backgroundManual background /Manual backgroundManual background b = Manual backgroundManual background ”. Check that the C1 error is about 200 and ADER is below 2.

8.Press the [YES] button and display “ Manual backgroundManual backgroundManual backgroundManual background /Manual backgroundManual background a = Manual backgroundManual background ”. Check that the C1 error is about 200 and ADER is below 2.

9.Press the [MENU/NO] button, next press the [ÊÊÊÊÊEJECT]¤ but- ton and take out the test disc.

6-5. C PLAY Checking

MO Error Rate Check

Checking Procedure :

1.Load the test disk (MDW-74/AU-1).

2.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “CPLAY MODE” (C30).

3.Press the [YES] button and display “CPLAY MID”.

4.The display changes to “C = Manual backgroundManual backgroundManual backgroundManual background AD = Manual backgroundManual background”.

5.If the C1 error rate is below 80, check that ADER is below 2.

6.Press the [MENU/NO] button, stop playback, press the [ÊÊÊÊÊEJECT]¤ button and take out the test disc.

CD Error Rate Check

Checking Procedure :

1.Load the check disc (MD) TDYS-1.

2.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “CPLAY MODE” (C30).

3.Press the [YES] button twice and display “CPLAY MID”.

4.The display changes to “C = Manual backgroundManual backgroundManual backgroundManual background AD = Manual backgroundManual background”.

5.Check that the C1 error rate is below 50.

6.Press the [MENU/NO] button, stop playback, press the [ÊÊÊÊÊEJECT]¤ button and take out the check disc.

6-6. Self-Recording/playback Check

Prepare a continuous recording disc using the unit to be repaired and check the error rate.

Checking Procedure :

1.Insert a recordable disc (blank disc) into the unit.

2.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob to display “CREC MODE” (C31).

3.Press the [YES] button to display the “CREC MID”.

4.When recording starts, “ REC ” is displayed, this becomes “CREC @@@@” (@@@@ is the address), and recording starts.

5.About 1 minute later, press the [MENU/NO] button to stop continuous recording.

6.Turn the [ÊÊÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob to display “CPLAY MODE” (C30).

7.Press the [YES] button to display “CPLAY MID”.

8.“C = Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background AD = Manual backgroundManual backgroundManual backgroundManual background” will be displayed.

9.Check that the C1 error becomes below 80 and the AD error below 2.

10.Press the [MENU/NO] button to stop playback, and press the [ÊÊÊÊÊEJECT]¤ button and take out the disc.

– 25 –

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Contents SERVICE MANUAL SPECIFICATIONSSupplied accessories MDS-JE530– 2 – SELF-DIAGNOSISFUNCTIONTable of Error Codes Items of Error History Mode Items and Contents– 3 – Selecting the Test Mode6.DIAGRAMS TABLE OF CONTENTSDISASSEMBLY ELECTRICAL ADJUSTMENTSNotes on chip component replacement Flexible Circuit Board Repairing– 5 – ADVARSELJIG FOR CHECKING BD BOARD WAVEFORM – 6 –Record Precedure – 7 –Display Precedure – 8 – CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSRETRY CAUSE DISPLAY MODE – 9 –Precedure Fig. 1 Reading the Test Mode DisplayHexadecimal nBinary Conversion Table – 10 –Reading the Display – 11 – SECTION GENERALLOCATION OF CONTROLS This section is extracted from instruction manualPage – 13 – SECTION DISASSEMBLYCASE FRONT PANEL SECTIONMAIN BOARD – 14 –MECHANISM DECK SECTTION MDM-5D SLIDER CAM – 15 –BASE UNIT MBU-5D,BD BOARD SW BOARD, LOADING MOTOR M103 – 16 –2. SETTING THE TEST MODE 1. PRECAUTIONS FOR USE OF TEST MODESECTION TEST MODE – 17 –5. SELECTING THE TEST MODE – 18 –5-1.Operating the Continuous Playback Mode – 19 –5-3. Non-VolatileMemory Mode EEP MODE 6. FUNCTIONS OF OTHER BUTTONS – 20 –7. TEST MODE DISPLAYS MEANINGS OF OTHER DISPLAYS – 21 –1.PARTS REPLACEMENT AND ADJUSTMENT SECTION ELECTRICAL ADJUSTMENTS– 22 – 4. PRECAUTIONS FOR ADJUSTMENTS 2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSIONLaser power meter – 23 –6-2.Laser Power Check Checking ProcedureSpecification – 24 –CD Error Rate Check 6-5.C PLAY Checking MO Error Rate Check– 25 – 6-4.Focus Bias Check9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT 7. INITIAL SETTING OF ADJUSTMENT VALUE10. LASER POWER ADJUSTMENT Setting Procedure– 27 – 11. TRAVERSE ADJUSTMENTSpecification Adjusting Procedure– 28 – 12.FOCUS BIAS ADJUSTMENTAdjusting Procedure 15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 13.ERROR RATE CHECK13-1.CD Error Rate Check 13-2.MO Error Rate Check– 30 – Adjustment Location– BD BOARDSide A – – BD BOARDSide B –6-1.BLOCK DIAGRAM – MD SERVO Section – MDS-JE530 SECTION DIAGRAMS– 31 – – 32 –MDS-JE530 6-2.BLOCK DIAGRAM – MAIN Section –– 33 – – 34 –Note on Printed Wiring Board – 35 –Note on Schematic Diagram • Circuit Boards Location – 36 –– 38 – 6-4.PRINTED WIRING BOARD – BD Board –•See page 36 for Circuit Boards Location •Semiconductor Location– 40 – – 39 –MDS-JE530 – 41 – 6-6.SCHEMATIC DIAGRAM – BD Board 2/2 – See•– 42 – MDS-JE5306-8.PRINTED WIRING BOARD – SW Board – 6-7.SCHEMATIC DIAGRAM – SW Board –– 43 – – 44 –– 45 – 6-9.PRINTED WIRING BOARD – MAIN Board – See•– 46 – page 36 for Circuit Boards Location– 48 – – 47 –MDS-JE530 Page Page 41 Page– 50 – – 49 –MDS-JE530 – 52 – – 51 –MDS-JE530 • Semiconductor Location– 54 – – 53 –MDS-JE530 Page 47 Page– 55 – •IC Block Diagrams – BD Board –– 56 – IC101IC310 – 57 –M5293L IC4316-14.IC PIN FUNCTION DESCRIPTION – 58 –•BD BOARD IC121 CXD2656R – 59 –– 60 – – 61 – •MAIN BOARD IC501 M30624MG-207FPSYSTEM CONTROLLER – 62 –– 63 – – 64 – – 65 – SECTION EXPLODED VIEWS1CHASSIS SECTION 66 61 61 2FRONT PANEL SECTION 61 64 61 63 6151 53 59 54 523MECHANISM SECTION MDM-5D 213 207 – 67 –202 201 223 2074BASE UNIT SECTION MBU-5D 252 – 68 –263 270 254 253– 69 – SECTION ELECTRICAL PARTS LIST– 70 – DISPLAY– 71 – KEY SWDISPLAY – 72 – MAINKEY SW MAIN – 73 –MAIN – 74 –– 75 – POWER SWMAIN – 76 – MDS-JE530Sony Corporation 9-928-824-11
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