Section Electrical Adjustments | Sony MDS-PC3 guide

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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Image 24

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

Contents

Specifications MDS-PC3 SELF-DIAGNOSIS Function TOC t Edit t TOC Edit t blank t Items of Error History Mode Items and Contents Table of Contents DisassemblyDiagrams Table of Error Codes Section 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 Binary Hexadecimal t Binary Conversion Table Remote Parts Description General Section Using the Display Hooking Up Section Disassembly MD Mechanism Deck MDM-7A Main Board Over Light Head HR901, BD MD Board Holder Assy Loading Motor Assy M103 Sled Motor Assy M102, Slider Optical PICK-UP MD KMS-260B/JIN Spindle Motor Assy M101 Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test Mode Selecting the Test Mode Display Details Mark Group Operating the Continuous Playback Mode Test Mode Displays Mode displayError rate display Functions of Other Buttons Meanings 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 Repairs Auto Check Other Checks Play Check MO Error Rate Check CD Error Rate Check Initial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment Traverse Adjustment Iop NV Save Focus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level Adjustment Adjusting Points and Connecting Points Diagrams Block Diagrams BD Section MDS-PC3 Main Section Sclk Cclk Printed Wiring Board BD Section Semiconductor PIN 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 Board LB1830M-S-TE-L Main Board BH3541F-E2 Main Board IC PIN Functions IC101 CXA2523AR RF Amplifier BD Board MNT0 FOK Mvci IC300 M30805SGP Main Board Shck MNT1 Section Exploded Views Chassis Section Mechanism MDM-7A 319 302 320 317 304 308 303 305 306 301 318 307 Mechanism 351 Section Electrical Parts List Remarks Ref. No Description Metal Chip Main PIN, Connector 2P Diode Main Panel MDS-PC3 Panel KEY REFLECT/PROTECT SW