Sony MDS-PC3 specifications Section Electrical Adjustments, Parts Replacement and Adjustment

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SECTION 5

ELECTRICAL ADJUSTMENTS

5-1. PARTS REPLACEMENT AND ADJUSTMENT

If malfunctions caused by optical pick-up such as sound skipping are suspected, follow the following check.

Check before replacement

Start
5-6-2.	NG
Laser Power Check
(See page 27)
OK
5-6-3.	NG
Iop Compare
(See page 27)
OK
5-6-4.	NG	Replace optical pick-up or MDM-7A
Auto Check		Replace optical pick-up or MDM-7A
(See page 28)

OK

Other faults are suspected.

Check the threading mechanism, etc.

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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 CodesSection Service Notes Flexible Circuit Board RepairingLead free soldering JIG for Checking BD Board Waveform Record Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetMain Board Component Side 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 ButtonsMeanings of Other Displays Automatic SELF-DIAGNOSIS FunctionInformation Section Electrical Adjustments Parts Replacement and AdjustmentCheck before replacement Adjustment flow Precautions for Checking Laser Diode Emission Precautions for USE of Optical PICK- UP KMS-260BPrecautions for Adjustments Using the Continuously Recorded Disc Checks Prior to RepairsAuto Check Other ChecksPlay Check MO Error Rate Check CD Error Rate CheckInitial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment 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