Sony MDS-JE530 27, Traverse Adjustment, Specification, Connection, Adjusting Procedure

Page 27
11. TRAVERSE ADJUSTMENT
+
–
oscilloscope (DC range)

7.Then, turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “LDPWR CHECK” (C02).

8.Press the [YES] button once and display “LD 0.9 mW $ – 27 –Manual background ”. Check that the reading of the laser power meter become 0.85 to 0.91 mW.

9.Press the [YES] button once more and display “LD 7.0 mW $

Manual backgroundManual background”. Check that the reading the laser power meter and digital volt meter satisfy the specified value.

Note down the digital voltmeter reading value.

Specification:

Laser power meter reading : 7.0 ± 0.2 mW

Digital voltmeter reading : Optical pick-up displayed value ±10%

(Optical pick-up label)

KMS260A

27X40 B0825

lOP=82.5 mA in this case

lOP (mA) = Digital voltmeter reading (mV)/1 (Ω)

10.Press the [MENU/NO] button and display “LDPWR CHECK” and stop the laser emission.

(The [MENU/NO] button is effective at all times to stop the laser emission.)

11.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob to display “Iop Write”(C28).

12.Press the [YES] button. When the display becomes Ref=@@@.@ (@ is an arbitrary number), press the [YES] button to display “Measu=@@@.@” (@ is an arbitrary num- ber).

13.The numbers which can be changed will blink. Input the Iop value noted down at step 9.

To select the number : Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob.

To select the digit : Press the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob.

14.When the [YES] button is pressed, “Complete!” will be dis- played momentarily. The value will be recorded in the non- volatile memory and the display will become “Iop Write”.

Note 1: After step 4, each time the [YES] button is pressed, the display

will be switched between “LD 0.7 mW $

”, “LD 6.2 mW $

”, and “LD Wp

$

”. Nothing needs to be performed

here.

 

 

 

11. TRAVERSE ADJUSTMENT

Note 1: Data will be erased during MO reading if a recorded disc is used in this adjustment.

Note 2: If the traverse waveform is not clear, connect the oscilloscope as shown in the following figure so that it can be seen more clearly.

BD board

Manual background 330 k Ω

CN110 pin 3 (TEO)

CN110 pin 1 (VC) Manual backgroundManual background 10 pF

Connection :

oscilloscope (DC range)

BD board

 

 

CN110 pin 3

(TEO)

 

 

+

V: 0.1 V/div

CN110 pin 1

(VC)

–

H: 10 ms/div

Adjusting Procedure :

1.Connect an oscilloscope to CN110 pin 3 (TEO) and CN110 pin 1 (VC) of the BD board.

2.Load a disc (any available on the market). (Refer to Note 1)

3.Press the [ÊÊÊÊÊÊ]) button and move the optical pick-up outside the pit.

4.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob and display “EF MO ADJUS” (C10).

5.Press the [YES] button and display “EFB = Manual backgroundManual background MO-R”. (Laser power READ power/Focus servo ON/tracking servo OFF/spindle (S) servo ON)

6.Turn the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob so that the waveform of the oscilloscope becomes the specified value.

(When the [ÊÊÊÊÊÊÊÊAMSÊÊÊÊÊÊÊÊ]- ± knob is turned, the Manual backgroundManual background of “EFB=

Manual backgroundManual background ” changes and the waveform changes.) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the wave- form so that the specified value is satisfied as much as pos- sible.

(Read power traverse adjustment)

(Traverse Waveform)

A

VC

B

Specification A = B

7.Press the [YES] button and save the result of adjustment to

the non-volatile memory (“EFB = Manual backgroundManual background SAV” will be displayed

for a moment. Then “EFB = Manual backgroundManual background MO-W” will be displayed).

– 27 –

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Contents MDS-JE530 SPECIFICATIONSSERVICE MANUAL Supplied accessories– 2 – SELF-DIAGNOSISFUNCTIONSelecting the Test Mode Items of Error History Mode Items and ContentsTable of Error Codes – 3 –ELECTRICAL ADJUSTMENTS TABLE OF CONTENTS6.DIAGRAMS DISASSEMBLYADVARSEL Flexible Circuit Board RepairingNotes on chip component replacement – 5 –JIG FOR CHECKING BD BOARD WAVEFORM – 6 –– 7 – Record PrecedureDisplay Precedure – 8 – CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSFig. 1 Reading the Test Mode Display – 9 –RETRY CAUSE DISPLAY MODE Precedure– 10 – Hexadecimal nBinary Conversion TableReading the Display This section is extracted from instruction manual SECTION GENERAL– 11 – LOCATION OF CONTROLSPage FRONT PANEL SECTION SECTION DISASSEMBLY– 13 – CASE– 14 – MAIN BOARDMECHANISM DECK SECTTION MDM-5D – 15 – SLIDER CAMBASE UNIT MBU-5D,BD BOARD SW BOARD, LOADING MOTOR M103 – 16 –– 17 – 1. PRECAUTIONS FOR USE OF TEST MODE2. SETTING THE TEST MODE SECTION TEST MODE5. SELECTING THE TEST MODE – 18 –– 19 – 5-1.Operating the Continuous Playback Mode5-3. Non-VolatileMemory Mode EEP MODE – 20 – 6. FUNCTIONS OF OTHER BUTTONS7. TEST MODE DISPLAYS MEANINGS OF OTHER DISPLAYS – 21 –SECTION ELECTRICAL ADJUSTMENTS 1.PARTS REPLACEMENT AND ADJUSTMENT– 22 – – 23 – 2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSION4. PRECAUTIONS FOR ADJUSTMENTS Laser power meter– 24 – Checking Procedure6-2.Laser Power Check Specification6-4.Focus Bias Check 6-5.C PLAY Checking MO Error Rate CheckCD Error Rate Check – 25 –Setting Procedure 7. INITIAL SETTING OF ADJUSTMENT VALUE9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT 10. LASER POWER ADJUSTMENTAdjusting Procedure 11. TRAVERSE ADJUSTMENT– 27 – Specification12.FOCUS BIAS ADJUSTMENT – 28 –Adjusting Procedure 13-2.MO Error Rate Check 13.ERROR RATE CHECK15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 13-1.CD Error Rate Check– BD BOARDSide B – Adjustment Location– 30 – – BD BOARDSide A –– 32 – MDS-JE530 SECTION DIAGRAMS6-1.BLOCK DIAGRAM – MD SERVO Section – – 31 –– 34 – 6-2.BLOCK DIAGRAM – MAIN Section –MDS-JE530 – 33 –– 35 – Note on Printed Wiring BoardNote on Schematic Diagram • Circuit Boards Location – 36 –•Semiconductor Location 6-4.PRINTED WIRING BOARD – BD Board –– 38 – •See page 36 for Circuit Boards Location– 39 – – 40 –MDS-JE530 MDS-JE530 6-6.SCHEMATIC DIAGRAM – BD Board 2/2 – See•– 41 – – 42 –– 44 – 6-7.SCHEMATIC DIAGRAM – SW Board –6-8.PRINTED WIRING BOARD – SW Board – – 43 –page 36 for Circuit Boards Location 6-9.PRINTED WIRING BOARD – MAIN Board – See•– 45 – – 46 –Page Page 41 Page – 47 –– 48 – MDS-JE530– 49 – – 50 –MDS-JE530 • Semiconductor Location – 51 –– 52 – MDS-JE530Page 47 Page – 53 –– 54 – MDS-JE530IC101 •IC Block Diagrams – BD Board –– 55 – – 56 –IC431 – 57 –IC310 M5293L6-14.IC PIN FUNCTION DESCRIPTION – 58 –•BD BOARD IC121 CXD2656R – 59 –– 60 – – 61 – •MAIN BOARD IC501 M30624MG-207FPSYSTEM CONTROLLER – 62 –– 63 – – 64 – SECTION EXPLODED VIEWS – 65 –1CHASSIS SECTION 59 54 52 2FRONT PANEL SECTION 61 64 61 63 6166 61 61 51 53223 207 – 67 –3MECHANISM SECTION MDM-5D 213 207 202 201254 253 – 68 –4BASE UNIT SECTION MBU-5D 252 263 270– 69 – SECTION ELECTRICAL PARTS LIST– 70 – DISPLAYKEY SW – 71 –DISPLAY MAIN – 72 –KEY SW MAIN – 73 –MAIN – 74 –POWER SW – 75 –MAIN 9-928-824-11 MDS-JE530– 76 – Sony Corporation
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