Sony HCD-C5 service manual Auto Check, Other Checks, Traverse Check

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HCD-C5

6-4. Auto Check

This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform Auto Check after the laser power check and Iop compare.

Procedure:

1.Press the .“R” or >“R” button to display “AUTO CHECK” (C01).

2.Press the ENTER/YES “R” button. If “LDPWR ” is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop Compare, and then repeat from enter the MD test mode.

3.If a disc is in the mechanical deck, it will be ejected forcibly. “DISC IN” will be displayed in this case. Load a test disc (MDW- 74/GA-1) which can be recorded.

4.If a disc is loaded at step 3, the check will start automatically.

5.When “XX CHECK” is displayed, the item corresponding to XX will be performed.

When “06 CHECK” completes, the disc loaded at step 3 will be ejected. “DISC IN” will be displayed. Load the check disc (TDYS-1).

6.When the disc is loaded in the step 5, the check will automatically be resumed from “07 CHECK”.

7.After completing to test item 12 (“oC CHECK”), check OK or NG will be displayed. If all items are OK, “CHK ALL OK” will be displayed. If any item is NG, it will be displayed as “NG:xxxx”.

When “CHK ALL OK” is displayed, it means that the optical pick- up is normal. Check the operations of other parts (spindle motor, sled motor, etc.).

When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.

6-5. Other Checks

All the following checks are performed by the Auto Check mode. They therefore need not be performed in normal operation.

6-6. Traverse Check

6-7. Focus Bias Check

6-8. C PLAY Check

6-9. Self-Recording/Playback Check

6-6. Traverse Check

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.

oscilloscope (DC range)

BD (MD) board

330 k Ω

 

CN105 pin 4 (TE)

+

CN105 pin 6 (VC)

–

10 pF

 

Connection:

oscilloscope (DC range)

BD (MD) board

CN105 pin 4 (TE)

 

 

+

V: 0.1 V/div

 

 

CN105 pin 6 (VC)

 

 

–

 

 

H: 10 ms/div

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 CHECK”(C14).

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.Observe the waveform of the oscilloscope, and check that the

specified value is satisfied. Do not press the . “R” or

>“R” button.

(Read power traverse checking)

Traverse Waveform

A

VC

B

Specified value : Below 10% offset value

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

7.Press the ENTER/YES “R” button to display “EFB = MO- W”.

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

>“R” button. (Write power traverse checking)

Traverse Waveform

A

VC

B

Specified value : Below 10% offset value

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

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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 SecitonENTER/YES R Basic Operations of the Test ModeSelecting the Test Mode Operating the Continuous Playback Mode Information Functions of Other ButtonsAutomatic SELF-DIAGNOSIS Function Display Precedure When Memory NG is DisplayedRecord Procedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and Adjustments in MDRetry Cause Display Mode in MD PrecedureExample Reading the Retry Cause DisplayReading the Display Bit When Binary DetailsRF Level Check Section Electrical Adjustments HCD-C5CD Section MD Section Parts Replacement and AdjustmentCheck before replacement 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 RepairsTraverse Check Auto CheckOther Checks Self-Recording/playback Check Focus Bias CheckPlay Check Laser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Recording and Displaying the IOP InformationIop NV Save Traverse AdjustmentMethod of identifying the optical pick-up KMS-260B/260E 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 IC102 BA5982FP-E2 BD CD Board IC Block DiagramsIC101 CXD3068Q BD CD Board IC103 CXA2581N-T4 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 BiasTEST2 TEST3 Dvss SpfdTEST1 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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