Sony MDS-PC3 specifications Checks Prior to Parts Replacement and Adjustments, Forced Reset

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CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS

Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”.

•5-6-2. Laser power check (see page 27)

•5-6-3. Iop Compare (see page 27)

•5-6-4. Auto Check (see page 28)

Note:

The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments.

When performing adjustments, use the specified values for adjustments.

FORCED RESET

The system microprocessor can be reset in the following procedure.

Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.

Procedure :

Remove the short-pin attached to CN420, and then attach it again.

[MAIN BOARD] (Component Side)

CN420

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Contents Specifications MDS-PC3SELF-DIAGNOSIS Function TOC t Edit t TOC Edit t blank tItems of Error History Mode Items and Contents Table of Contents DisassemblyDiagrams Table of Error CodesLead free soldering Section Service NotesFlexible Circuit Board Repairing JIG for Checking BD Board Waveform Record Precedure Main Board Component Side Checks Prior to Parts Replacement and AdjustmentsForced Reset Retry Cause Display Mode Bit BinaryHexadecimal t Binary Conversion Table Remote Parts Description General SectionUsing the Display Hooking Up Section Disassembly MD Mechanism Deck MDM-7AMain Board Over Light Head HR901, BD MD BoardHolder Assy Loading Motor Assy M103Sled Motor Assy M102, Slider Optical PICK-UP MD KMS-260B/JINSpindle Motor Assy M101 Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test ModeSelecting the Test Mode Display Details Mark GroupOperating the Continuous Playback Mode Test Mode Displays Mode displayError rate display Functions of Other ButtonsInformation Meanings of Other DisplaysAutomatic SELF-DIAGNOSIS Function Check before replacement Section Electrical AdjustmentsParts Replacement and Adjustment Adjustment flow Precautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-260B Using the Continuously Recorded Disc Checks Prior to RepairsAuto Check Other ChecksPlay Check MO Error Rate Check CD Error Rate CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Traverse Adjustment Iop NV SaveFocus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Diagrams Block Diagrams BD Section MDS-PC3Main Section Sclk CclkPrinted Wiring Board BD Section SemiconductorPIN Function MDS-PC3 Printed Wiring Board Main Section PIN Functon MDS-PC3 Printed Wiring Board Panel Section Schematic Diagram Panel Section See page 35 for Waveforms IC Block Diagrams IC101 CXA2523AR BD BoardLB1830M-S-TE-L Main Board BH3541F-E2 Main Board IC PIN Functions IC101 CXA2523AR RF Amplifier BD BoardMNT0 FOK Mvci IC300 M30805SGP Main Board Shck MNT1 Section Exploded Views Chassis SectionMechanism MDM-7A 319 302 320 317 304 308 303 305 306 301 318 307Mechanism 351Section Electrical Parts List Remarks Ref. No DescriptionMetal Chip Main PIN, Connector 2P Diode Main Panel MDS-PC3 Panel KEY REFLECT/PROTECT SW