Sony HCD-PX333 Focus Bias Check, Play Check MO Error Rate Check, CD Error Rate Check

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HCD-PX333

9.Press the ENTER/YES “R” button to display “EFB = 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 press the . “R” or

>“R” button.

Traverse Waveform

A

VC

B

Specified value : Below 10% offset value

Offset value (%) =

IA – BI

X 100

 

2 (A + B)

11.Press the ENTER/YES “R” button to display “EF MO CHECK” (C14).

The disc stops rotating automatically.

12.Press the Z (MD) button and take out the disc.

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

14.Press the . “R” or > “R” button and display “EF CD CHECK” (C15).

15.Press the ENTER/YES “R” button to display “EFB = CD”. Servo is imposed automatically.

16.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not press the . “R” or

>“R” button.

Traverse Waveform

A

VC

B

Specified value : Below 10% offset value

Offset value (%) =

IA – BI

X 100

 

2 (A + B)

17.Press the ENTER/YES “R” button to display “EF CD CHECK” (C15).

18.Press the Z (MD) button and take out the check disc (TDYS-1).

Checking Location: BD (MD) board (see page 47)

6-7. Focus Bias Check

Change the focus bias and check the focus tolerance amount.

Procedure:

1.Load the test disc (MDW-74/GA-1).

2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).

3.Press the ENTER/YES “R” button to display “CPLAY2MID”.

4.Press the MENU/NO “R” button when “C = AD = )” is displayed.

5.Press the . “R” or > “R” button to display “FBIAS CHECK” (C16).

6.Press the ENTER/YES “R” button to display “ / c = ”. 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 20 and ADER is below 2.

7.Press the ENTER/YES “R” button to display “ / b = ”. Check that the C1 error is about 200 and ADER is below 2.

8.Press the ENTER/YES “R” button to display “ / a = ”. Check that the C1 error is about 200 and ADER is below 2.

9.Press the MENU/NO “R” button, then press the Z (MD) button and take out the test disc.

6-8. C PLAY Check

MO Error Rate Check

Procedure:

1.Load the test disc (MDW-74/GA-1).

2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).

3.Press the ENTER/YES “R” button to display “CPLAY2MID”.

4.The display changes to “C = AD = )”.

5.If the C1 error rate is below 20, check that ADER is 00.

6.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the test disc.

CD Error Rate Check

Procedure:

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

2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).

3.Press the ENTER/YES “R” button to display “CPLAY2MID”.

4.The display changes to “C = AD = )”.

5.Check that the C1 error rate is below 20.

6.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the check disc.

6-9. Self-Recording/playback Check

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

Procedure:

1.Load a recordable disc (blank disc).

2.Press the . “R” or > “R” button to display “CREC 2MODE” (C37).

3.Press the ENTER/YES “R” button to display “CREC 2MID”.

4.When recording starts, lights up “ REC ” and display “CREC 2

@@@@” (@@@@ is the address).

5.About 1 minute later, press the MENU/NO “R” button to stop continuous recording.

6.Press the . “R” or > “R” button to display “CPLAY2 MODE” (C36).

7.Press the ENTER/YES “R” button to display “CPLAY2 MID”.

8.“C = AD = )” will be displayed.

9.Check that the C1 error becomes below 20 and the AD error below 2.

10.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the disc.

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Contents Specifications MDM-7X2AHCD-PX333 SELF-DIAGNOSIS Function MD SectionItems of Error History Mode Items and Contents HCD-PX333Table of Error Codes Error Code Details of ErrorCD Section Diagrams Table of ContentsElectrical Adjustments Model IdentificationFor CD Cleaning Objective Lens of Optical PICK-UPHCD-PX333 Section Servicing Notes For MDService Position JIG for Checking BD MD Board Waveform IOPWhen Memory NG is Displayed Record ProcedureChecks Prior to Parts Replacement and Adjustments in MD Criteria for Determination Measure if unsatisfactorySpecified Value Retry Cause Display Mode in MD Bit BinaryDecimal Bit When Binary Higher Bits Lower Bits Hexa DetailsHexadecimal Binary CD Aging Mode CD aging mode sequenceCD-TEXT Test Disc Checking MethodRestrictions in CD-TEXT Display CD-TEXT Test Disc Recorded Contents and Display Parts Identification Section General HCD-PX333Remote Control HCD-PX333 Section Disassembly This set can be disassembled in the order shown belowCase Front Panel SectionJack BOARD, BL BOARD, Panel BOARD, LCD REC BOARD, VOL BoardTRANSFORMER, Power and DC FAN Back PANEL, SP BOARD, TunerMain BOARD, Power Board AMP BoardMD Mechanism Deck MDM-7X2A Over Write Head HR901, BD MD BoardHolder Assy Loading Motor Assy M103Sled Motor Assy M102 Optical PICK-UP KMS-262Spindle Motor Assy M101 CD Mechanism Deck CDM55A-21BD53MD Digital Board Holder BU AssyBase Unit BU-21BD53, Holder 55-BU21 Tray CDM, Loading BoardCAM CDM55 HCD-PX333 Section Test Mode Releasing the Test Mode MD Seciton Precautions for USE of Test ModeSetting the Test Mode Basic Operations of the Test ModeSelecting the Test Mode CheckMID Operating the Continuous Playback ModeFunctions of Other Buttons OUTTest Mode Displays Meanings of Other DisplaysAutomatic SELF-DIAGNOSIS Function InformationHCD-PX333 Section Electrical Adjustments Parts Replacement and AdjustmentCheck before replacement Adjustment flow YESPrecautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-262A/262E Laser power meterLaser Power Check Using the Continuously Recorded DiscTemperature Compensation Offset Check Checks Prior to RepairsAuto Check Other ChecksTraverse Check Focus Bias Check Play Check MO Error Rate CheckCD Error Rate Check Self-Recording/playback CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Iop NV SaveFocus Bias Adjustment EnterYES R CD Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjustment and checking Loacation Curve Check RF Level CheckBalance Check BD CD Board Conductor Side Memo HCD-PX333 Section Diagrams Block DiagramsMD Servo Section A/D Converter Section OpticalMain Section FANDISPLAY, Power Supply Section ST/CD+10VCircuit Boards Location AUSSide B Schematic Diagram BD CD Board Printed Wiring Board BD MD Board LocationSemiconductor 5959 IC B/D Printed Wiring Board MD Digital Section Schematic Diagram MD Digital /3 See page 79 for IC Block Diagrams See page 79 for IC Block Diagrams Semiconductor Location IC B/D HCD-PX333 Printed Wiring Board AMP Board Printed Wiring Board SP BoardSchematic Diagram AMP Board Schematic Diagram SP Board Printed Wiring Board Panel IC602Schematic Diagram Panel See page 55 for Circuit Boards Location 7474 Schematic Diagram Power Board MD Digital Board Main Board WaveformsBD CD Board BD MD Board I2SLRCKOUTIC Block Diagrams IC101 CXA2523AR BD MD BoardIC141 BH6519FS-E2 BD MD Board IC1005 uDA1360TS MD Digital Board IC931 M62016L Main Board IC PIN Function Description BD MD Board IC151 CXD2662R Mvci XcasXWE AsyoSrdr FrdrFS4 SfdrLVL0 ResetLVL1 DarstI2CCLK XeltWR-PWR VCC1VCC4 VCC3VSS3 VSS4Drvclk Reset XT1Drvdat CLKLOD NEG IN-SWLOD POS CLP POSMain Board IC501 ∝PDSS3033AYGF-M18-3BA System Controller TR Relay MD/CD PowerGC Power KBD CHKRDS CLK PC PowerSircs Self WriteSection Exploded Views REC BoardLCD601 1-804-371-11 Indicator TUBE, Liquid Crystal 58 A-4476-550-A Panel BOARD, CompleteChassis 154 152 151163 162 153 156 161 163308 311 305 313314 310 309 319 303365 370 353 366353 369 359357 355 354 352 360 356 359506 512 513 CD Mechanism Deck Section CDM55A-21BD53510 505 508 511 504 522 501 517 514 518 516 502 519 520 515 521HCD-PX333 Section AMP Electrical Parts List Elect Chip HCD-PX333 BD MDTANTAL. Chip Diode F1J6TPJack Jack HCD-PX333 Loading Main HCD-PX333 Main MY,SP,HK,AUS AEP,UKCONNECTOR, FFC 31P HCD-PX333 Main MD DigitalMD Digital BOARD, Complete Capacitor MD Digital Panel HCD-PX333 Panel Power HCD-PX333 Power REC HCD-PX333 VOL 111 HCD-PX333 Revision History
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