Sony HCD-C5 service manual Read power traverse adjustment

Page 42

HCD-C5

Procedure:

1.Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin 6 (VC) on the BD (MD) board.

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

3.Press the M “R” button to move the optical pick-up outside the pit.

4.Press the . “R” or > “R” button to display “EF MO ADJUST” (C07).

5.Press the ENTER/YES “R” button to display “EFB = MO- R”. (Laser power READ power/Focus servo ON/tracking servo OFF/spindle (S) servo ON)

6.Press the .“R” or >“R” button so that the waveform of the oscilloscope becomes the specified value.

(When the . “R” or > “R” button is pressed, the of “EFB= ” changes and the waveform changes) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.

(Read power traverse adjustment)

Traverse Waveform

A

VC

B

Specification A = B

7.Press the ENTER/YES “R” button and save the result of

adjustment to the non-volatile memory (“EFB = SAVE”

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

8.Press the .“R” or >“R” button so that the waveform of the oscilloscope becomes the specified value.

(When the . “R” or >“R” button is pressed, the of

“EFB= ” changes and the waveform changes) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible. (Write power traverse adjustment)

Traverse Waveform

A

VC

B

Specification A = B

9.Press the ENTER/YES “R” button, and save the adjustment

results in the non-volatile memory. (“EFB = SAVE” will be displayed for a moment)

10.“EFB = MO-P” will be displayed.

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

11.Press the . “R” or >“R” button until the waveform of the oscilloscope moves closer to the specified value.

In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.

Traverse Waveform

A

VC

B

Specification A = B

12.Press the ENTER/YES “R” button, and save the adjustment

results in the non-volatile memory. (“EFB = SAVE” will be displayed for a moment)

Next “EF MO ADJUST” (C07) is displayed. The disc stops rotating automatically.

13.Press the MD Z button and take out the disc.

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

15.Press the . “R” or > “R” button to display “EF CD ADJUST” (C08).

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

17.Press the .“R” or >“R” button so that the waveform of the oscilloscope moves closer to the specified value.

In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.

Traverse Waveform

A

VC

B

Specification A = B

18.Press the ENTER/YES “R” button, display “EFB = SAVE” for a moment and save the adjustment results in the non-volatile memory.

Next “EF CD ADJUST” (C08) will be displayed.

19.Press the MD Z button and take out the check disc.

Adjustment Location: BD (MD) board (see page 44)

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Contents OPTIMA-720L1E SpecificationsTT Base Assy MDM-7B4MHCD-C5 SELF-DIAGNOSIS FunctionDiagrams Table of ContentsElectrical Adjustments Exploded Views Electrical Parts ListFlexible Circuit Board Repairing HCD-C5 Section Servicing NoteService Position of the CD Mechanism Deck Service Position of the MD Mechanism DeckJIG for Checking BD MD Board Waveform IOPSection General Parts IdentificationRemote control Parts IdentificationHCD-C5 Section Disassembly SET Bottom PLATE, CaseBottom PLATE, Case Panel BoardCD Mechanism Deck TN-CCD1001Z, BD CD Board CN1Connector Board Front Bracket SECTION, Loading Motor Assy M902 SW Board Feed Motor Assy M903 Rear Damper BracketOptical PICK-UP OPTIMA-720L1E Base Section Spindle Motor Assy M904 Jack BOARD, HP BOARD, Rear CoverUcom BOARD, AMP Power Board Tuner PACK, D. C. FAN M901Audio BOARD, Power BOARD, Power Transformer T900 Connector CN105MD Mechanism Deck MDM-7B4M, MD Digital Board Holder AssyBD MD Board Loading Motor M703, Spindle Motor M701, Sled Motor M702Over Write Head OP-SUB SectionHCD-C5 Section Test Mode Releasing the Test Mode Precautions for USE of Test ModeSetting the Test Mode MD SecitonBasic Operations of the Test Mode Selecting the Test ModeENTER/YES R Operating the Continuous Playback Mode Functions of Other Buttons Automatic SELF-DIAGNOSIS FunctionInformation When Memory NG is Displayed Record ProcedureDisplay Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and Adjustments in MDRetry Cause Display Mode in MD PrecedureReading the Retry Cause Display Reading the DisplayExample Bit When Binary DetailsSection Electrical Adjustments HCD-C5 CD SectionRF Level Check Parts Replacement and Adjustment Check before replacementMD Section Adjustment flow YESPrecautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK-UP KMS-260B/260E 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 CheckSelf-Recording/playback Check Laser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Method of identifying the optical pick-up KMS-260B/260EIop NV Save Read power traverse adjustment CD Error Rate Check Focus Bias AdjustmentError Rate Check MO Error Rate CheckMO Auto Gain Control Output Level Adjustment Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment Adjustment and checking LoacationWaveforms Section Diagrams HCD-C5Circuit Boards Location AUSBlock Diagram CD Servo Section OPTIMA-720L1EBlock Diagram MD Servo Section APCBlock Diagram Main Section Tape MD-LLocation SemiconductorIC B/D Location Side a Location Side BIC B/D 153 IC201 10K 1/16W Printed Wiring Board Ucom Board Semiconductor LocationDigital Optical Input Speaker IC302 D301 1SS355TE IC602 HCD-C5 IC901 Schematic Diagram Power Section IC Block Diagrams IC101 CXD3068Q BD CD Board IC103 CXA2581N-T4 BD CD BoardIC102 BA5982FP-E2 BD CD Board IC201 ∝ DA1360TS MD Digital Board IC141 BH6519FS-E2 BD MD BoardVssd Selstatic TEST1 Reset Bcko Vddd CRtcb Vddd PREEM0 NC NC TEST2 Vssd C L3DATAIC601 M66004M8FP-200D Panel Board IC PIN Function Description IC101Xrst SrdtSens SqsyAvdd AsyoAsyi BiasSpfd TEST1TEST2 TEST3 Dvss IC701 PLAY-SW ResetDA-RESET REC-SWIC501 Bvdd SPK-RELAYHelp BvssSection Exploded Views Overall SectionFront Panel Section 110 Chassis102 104 111 103 112 114 105 101 106 107 108 113152 155 154156 157 151 158 155 A-4725-732-A MD Digital BOARD, CompleteCD Mechanism Deck Section TN-CCD1001Z CD Mechanism Deck Secti Front Bracket Section TN-CCD1001Z CD Mechanism Deck Section Base Section TN-CCD1001Z CD Mechanism Deck Section Chassis Section TN-CCD1001Z MD Mechanism Deck MDM-7B4M 758 761 757 756 751 761760 762 763 764 759 753754 755 752AMP Audio Section Electrical Parts List Audio HCD-C5 BD CDDiode UDZ-TE-17-3.9B Ferrite Bead CONNECTOR, FFC 29PHCD-C5 BD CD FerriteBD CD HCD-C5 BD MD HCD-C5 BD MD BD MD Connector Jack HCD-C5 MD DigitalFerrite 0UH HCD-C5 MD Digital PanelFerrite Bead / Conductor InductorPanel Power Power Ucom Connector DIN 8P CONNECTOR, FFC 16PCONNECTOR, Round Type 6P PIN, Connector 4P DiodeR225 216-841-11 TRANSFORMER, Power AEP,UK,AUS Wire Flat Type 19 CoreSwitch Detection Limit Hardware ListHCD-C5 Revision History
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