Manuals / Sony / Home Audio / MiniDisc Player

Sony MDS-S50 MECHANISM DECK SECTION MDM-7A, OVER LIGHT HEAD HR901, BD BOARD, MDS-JE470

Models: MDS-S50

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MDS-JE470

3-6. MECHANISM DECK SECTION (MDM-7A)

3 Mechanism deck

2Two step screws (+BVTTWH M3)

2 Two step screws (+BVTTWH M3)

1 Harness

3-7. OVER LIGHT HEAD (HR901), BD BOARD

Note 1: If you disconnect the connector (CN104), you can remove the BD board without removing the over write head (HR901).

Note 2: Be careful to handle the over write head (HR901) because it is easy to be damaged.

3 Head, over light (HP901)

4Remove the solder (four portion)

2Screw (P1.7X6)

8BD board

61 Connector (CN104)

4 Remove the solder (five portion)	7 FLEXIBLE board (CN101)
	5 Two screws (BTP2X6)

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Sony MDS-S50 MECHANISM DECK SECTION MDM-7A, OVER LIGHT HEAD HR901, BD BOARD, MDS-JE470, Remove the solder five portion

Contents

SPECIFICATIONS I nputsOutputs MDS-JE470MDS-JE470 SELF-DIAGNOSISFUNCTIONGeneral Power requirements Supplied accessoriesMDS-JE470 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTSSelecting the Test Mode TABLE OF CONTENTS 3. DISASSEMBLY6. DIAGRAMS 7. EXPLODED VIEWSMDS-JE470 SECTION SERVICE NOTES SAFETY CHECK-OUTLEAKAGE Notes on chip component replacementJIG FOR CHECKING BD BOARD WAVEFORM MDS-JE470Record Precedure MDS-JE470Display Precedure OPTICAL PICK-UPBLOCK TYPE DISCRIMINATION MDS-JE470KSN-260B KSN-260ECHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS FORCED RESET@CN406 ProcedureProcedure RETRY CAUSE DISPLAY MODEMDS-JE470 MDS-JE470 Reading the DisplayReading the Display Hexadecimal t Binary Conversion TableMDS-JE470 SECTION GENERAL BUTTON DESCRIPTIONSMain unit Parts IdentificationMDS-JE470 SECTION DISASSEMBLY 3-1.DISASSEMBLY FLOW3-2.UPPER CASE 3-3.FRONT PANEL SECTION3Connector CN830 2 Connector CN390 1Wire flat type 17core CN3 5Claw3-4.MAIN BOARD 3-5.PT BOARD, VOL-SELBOARD SP model6Two screws +BVTP3x8 3 Connector CN400 2 Wire flat type 23core CN13-6.MECHANISM DECK SECTION MDM-7A 3-7.OVER LIGHT HEAD HR901, BD BOARDMDS-JE470 4 Remove the solder five portion3-8.HOLDER ASSY 3-9.LOADING MOTOR ASSY M103MDS-JE470 2 Claw3-10.SLED MOTOR ASSY M102, SLIDER 3-11.OPTICAL PICK-UPMDS-JE470 5 Remove the claw Shift the slider in the arrow3-12.SPINDLE MOTER ASSY M101 MDS-JE4702Spindle motor ASSY M101 1 Three screws M1.7, tapping4-1.PRECAUTIONS FOR USE OF TEST MODE 4-2.SETTING THE TEST MODEMDS-JE470 SECTION TEST MODE 4-3.EXITING THE TEST MODE4-5.SELECTING THE TEST MODE MDS-JE470Display GroupMDS-JE470 4-5-1.Operating the Continuous Playback Mode4-6.FUNCTIONS OF OTHER BUTTONS 4-7.TEST MODE DISPLAYS2. Error rate display MDS-JE4704-11.WHEN MEMORY NG IS DISPLAYED 4-8.MEANINGS OF OTHER DISPLAYS4-9.AUTOMATIC SELF-DIAGNOSISFUNCTION 4-10.INFORMATION5-1.PARTS REPLACEMENT AND ADJUSTMENT MDS-JE470 SECTION ELECTRICAL ADJUSTMENTSCheck before replacement Adjustment flow MDS-JE4705-2.PRECAUTIONS FOR CHECKING LASER DIODE EMISSION 5-4.PRECAUTIONS FOR ADJUSTMENTSMDS-JE470 Optical pick-upflexible board5-5.USING THE CONTINUOUSLY RECORDED DISC 5-6.CHECKS PRIOR TO REPAIRS5-6-1.Temperature Compensation Offset Check Checking ProcedureProcedure Checking ProcedureMDS-JE470 5-6-4.Auto CheckChecking Procedure 5-6-8.C PLAY Check MO Error Rate CheckChecking Procedure CD Error Rate Check5-7.INITIAL SETTING OF ADJUSTMENT VALUE 5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT5-10.LASER POWER ADJUSTMENT 5-8.RECORDING AND DISPLAYING THE Iop INFORMATION5-12.TRAVERSE ADJUSTMENT ProcedureAdjusting Procedure MDS-JE470Adjusting Procedure 5-13.FOCUS BIAS ADJUSTMENTMDS-JE470 5-14.ERROR RATE CHECK 5-16.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT5-15.FOCUS BIAS CHECK 5-14-1.CD Error Rate Check5-17.ADJUSTING POINTS AND CONNECTING POINTS MDS-JE470BD BOARD SIDE A BD BOARD SIDE BMDS-JE470 SECTION DIAGRAMS 6-1.CIRCUIT BOARDS LOCATIONPT board KEY-SWboard MAIN board DISPLAY board BD boardFor schematic diagrams For printed wiring boardsMDS-JE470 WAVEFORMS -BD Board6-2.BLOCK DIAGRAMS - BD SECTION MDS-JE470IC171 IC190MAIN SECTION IC310IC550 IC781MAIN BOARD LocationPage BD BOARD SIDE ABD BOARD 2/2 Page BD BOARD 2/2 Page BD BOARD 2/2 MDS-JE470Page KMS - 260B/260EBOARD MDS-JE470MDS-JE470 BD BOARD2/2 CN102 Page42DISPLAY BOARD CN701 Page47 7MAIN BOARD 82/26-7.SCHEMATIC DIAGRAM - MAIN SECTION 2/2 See page 51 for IC Block DiagramsMDS-JE470 MAINLocation MDS-JE470Semiconductor Location MDS-JE470Semiconductor 6-10.SCHEMATIC DIAGRAM - DISPLAY SECTION MDS-JE470MDS-JE470 PT BOARDVOL-SELBOARD 4949 6-12.SCHEMATIC DIAGRAM - POWER SECTIONMDS-JE470 6-13.IC BLOCK DIAGRAMS MDS-JE470IC101 CXA2523AR BD BOARD IC151 CXD2662R BD BOARDMDS-JE470 IC500 AK4524 MAIN BOARDIC440 M54641L MAIN BOARD IC421 M5293L MAIN BOARD6-14.IC PIN FUNCTION DESCRIPTION MDS-JE470IC101 CXA2523AR RF Amplifier BD BOARD Pin NoMDS-JE470 Pin NoPin Name DesriptionPLL Phase Locked Loop MDS-JE470Pin No Pin NameMDS-JE470 Pin NoPin Name DescriptionMDS-JE470 IC1 M30803MG-107FPSYSTEM CONTROL MAIN BOARDPin No Pin NameMDS-JE470 ADA. LATCHMDS-JE470 BEEP SW7-1.CHASSIS SECTION SECTION EXPLODED VIEWSMDS-JE470 MDS-JE470 7-2.FRONT PANEL SECTIONFL750 7-3.MECHANISM SECTION-1 MDM-7A MDS-JE470312 313S102 HR901M101 M102SECTION ELECTRICAL PARTS LISTMDS-JE470 BD MDS-JE470 BD Ref. NoDISPLAY MDS-JE470 KEY-SW MAINMDS-JE470 MAIN MAIN MDS-JE470MDS-JE470 VOL-SELMAIN MDS-JE470 MDS-JE470 REVISION HISTORY DateDescription of Revision 2001.05

3-6. MECHANISM DECK SECTION (MDM-7A)

3-7. OVER LIGHT HEAD (HR901), BD BOARD

4 Remove the solder (five portion)

7 FLEXIBLE board (CN101)

5 Two screws (BTP2X6)