Manuals / Sony / Home Audio / MiniDisc Player

Sony MDS-S50 Main Board, PT BOARD, VOL-SELBOARD SP model, MDS-JE470, Wire flat type 23core CN1

Models: MDS-S50

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MDS-JE470

3-4. MAIN BOARD

6Two screws (+BVTP3x8)

3 Connector (CN400)

2 Wire (flat type) (23core) (CN1)

1Wire (flat type) (27core) (CN2)

7 MAIN board

4 Two screws (+BVTP3x8)

5 screw (+BVTP3x8)

3-5. PT BOARD, VOL-SEL BOARD (SP model)

3Three screws (+PTTWH M3)

5PT board

1Connector (CN900)

2Connector (CN990) (SP model)

7VOL-SEL board (SP model)

4Nylom rivet (dia 3)

6Two screws (+BVTP3x8) (SP model)

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Sony MDS-S50 specifications Main Board, PT BOARD, VOL-SELBOARD SP model, MDS-JE470, 6Two screws +BVTP3x8 3 Connector CN400

Contents

MDS-JE470 SPECIFICATIONSI nputs OutputsSupplied accessories MDS-JE470SELF-DIAGNOSISFUNCTION General Power requirementsITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS MDS-JE470Selecting the Test Mode 7. EXPLODED VIEWS TABLE OF CONTENTS3. DISASSEMBLY 6. DIAGRAMSNotes on chip component replacement MDS-JE470 SECTION SERVICE NOTESSAFETY CHECK-OUT LEAKAGEMDS-JE470 JIG FOR CHECKING BD BOARD WAVEFORMMDS-JE470 Record PrecedureDisplay Precedure KSN-260E OPTICAL PICK-UPBLOCK TYPE DISCRIMINATIONMDS-JE470 KSN-260BProcedure CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSFORCED RESET @CN406RETRY CAUSE DISPLAY MODE ProcedureMDS-JE470 Hexadecimal t Binary Conversion Table MDS-JE470Reading the Display Reading the DisplayParts Identification MDS-JE470 SECTION GENERALBUTTON DESCRIPTIONS Main unit3-1.DISASSEMBLY FLOW MDS-JE470 SECTION DISASSEMBLY1Wire flat type 17core CN3 5Claw 3-2.UPPER CASE3-3.FRONT PANEL SECTION 3Connector CN830 2 Connector CN3902 Wire flat type 23core CN1 3-4.MAIN BOARD3-5.PT BOARD, VOL-SELBOARD SP model 6Two screws +BVTP3x8 3 Connector CN4004 Remove the solder five portion 3-6.MECHANISM DECK SECTION MDM-7A3-7.OVER LIGHT HEAD HR901, BD BOARD MDS-JE4702 Claw 3-8.HOLDER ASSY3-9.LOADING MOTOR ASSY M103 MDS-JE4705 Remove the claw Shift the slider in the arrow 3-10.SLED MOTOR ASSY M102, SLIDER3-11.OPTICAL PICK-UP MDS-JE4701 Three screws M1.7, tapping 3-12.SPINDLE MOTER ASSY M101MDS-JE470 2Spindle motor ASSY M1014-3.EXITING THE TEST MODE 4-1.PRECAUTIONS FOR USE OF TEST MODE4-2.SETTING THE TEST MODE MDS-JE470 SECTION TEST MODEGroup 4-5.SELECTING THE TEST MODEMDS-JE470 Display4-5-1.Operating the Continuous Playback Mode MDS-JE470MDS-JE470 4-6.FUNCTIONS OF OTHER BUTTONS4-7.TEST MODE DISPLAYS 2. Error rate display4-10.INFORMATION 4-11.WHEN MEMORY NG IS DISPLAYED4-8.MEANINGS OF OTHER DISPLAYS 4-9.AUTOMATIC SELF-DIAGNOSISFUNCTIONMDS-JE470 SECTION ELECTRICAL ADJUSTMENTS 5-1.PARTS REPLACEMENT AND ADJUSTMENTCheck before replacement MDS-JE470 Adjustment flowOptical pick-upflexible board 5-2.PRECAUTIONS FOR CHECKING LASER DIODE EMISSION5-4.PRECAUTIONS FOR ADJUSTMENTS MDS-JE470Checking Procedure 5-5.USING THE CONTINUOUSLY RECORDED DISC5-6.CHECKS PRIOR TO REPAIRS 5-6-1.Temperature Compensation Offset Check5-6-4.Auto Check ProcedureChecking Procedure MDS-JE470CD Error Rate Check Checking Procedure5-6-8.C PLAY Check MO Error Rate Check Checking Procedure5-8.RECORDING AND DISPLAYING THE Iop INFORMATION 5-7.INITIAL SETTING OF ADJUSTMENT VALUE5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT 5-10.LASER POWER ADJUSTMENTMDS-JE470 5-12.TRAVERSE ADJUSTMENTProcedure Adjusting Procedure5-13.FOCUS BIAS ADJUSTMENT Adjusting ProcedureMDS-JE470 5-14-1.CD Error Rate Check 5-14.ERROR RATE CHECK5-16.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 5-15.FOCUS BIAS CHECKBD BOARD SIDE B 5-17.ADJUSTING POINTS AND CONNECTING POINTSMDS-JE470 BD BOARD SIDE AKEY-SWboard MAIN board DISPLAY board BD board MDS-JE470 SECTION DIAGRAMS6-1.CIRCUIT BOARDS LOCATION PT boardWAVEFORMS -BD Board For schematic diagramsFor printed wiring boards MDS-JE470IC190 6-2.BLOCK DIAGRAMS - BD SECTIONMDS-JE470 IC171IC781 MAIN SECTIONIC310 IC550BD BOARD SIDE A MAIN BOARDLocation PageKMS - 260B/260E BD BOARD 2/2 Page BD BOARD 2/2 Page BD BOARD 2/2MDS-JE470 PageMDS-JE470 BOARD7MAIN BOARD 82/2 MDS-JE470BD BOARD2/2 CN102 Page42 DISPLAY BOARD CN701 Page47MAIN 6-7.SCHEMATIC DIAGRAM - MAIN SECTION 2/2See page 51 for IC Block Diagrams MDS-JE470MDS-JE470 LocationSemiconductor MDS-JE470 LocationSemiconductor MDS-JE470 6-10.SCHEMATIC DIAGRAM - DISPLAY SECTIONPT BOARD MDS-JE470VOL-SELBOARD 6-12.SCHEMATIC DIAGRAM - POWER SECTION 4949MDS-JE470 IC151 CXD2662R BD BOARD 6-13.IC BLOCK DIAGRAMSMDS-JE470 IC101 CXA2523AR BD BOARDIC421 M5293L MAIN BOARD MDS-JE470IC500 AK4524 MAIN BOARD IC440 M54641L MAIN BOARDPin No 6-14.IC PIN FUNCTION DESCRIPTIONMDS-JE470 IC101 CXA2523AR RF Amplifier BD BOARDDesription MDS-JE470Pin No Pin NamePin Name PLL Phase Locked LoopMDS-JE470 Pin NoDescription MDS-JE470Pin No Pin NamePin Name MDS-JE470IC1 M30803MG-107FPSYSTEM CONTROL MAIN BOARD Pin NoADA. LATCH MDS-JE470BEEP SW MDS-JE470SECTION EXPLODED VIEWS 7-1.CHASSIS SECTIONMDS-JE470 7-2.FRONT PANEL SECTION MDS-JE470FL750 313 7-3.MECHANISM SECTION-1 MDM-7AMDS-JE470 312M102 S102HR901 M101ELECTRICAL PARTS LIST SECTIONMDS-JE470 BD Ref. No MDS-JE470 BDMDS-JE470 KEY-SW MAIN DISPLAYMDS-JE470 MAIN MDS-JE470 MAINVOL-SEL MDS-JE470MAIN MDS-JE470 2001.05 MDS-JE470 REVISION HISTORYDate Description of Revision