Manuals / Sony / Home Audio / MiniDisc Player

Sony MDS-JE770 Upper Case, Front Panel Section, Case 1Two screws CASE 3TP2 1 Screw CASE 3TP2

Models: MDS-JE770

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MDS-JE770

3-2. UPPER CASE (408226)

2 Case (408226)

1Two screws (CASE 3TP2)

1 Screw (CASE 3TP2)

1 Two screws (CASE 3TP2)

3-3. FRONT PANEL SECTION

5Claw

4Three screws

(+BVTP3x8)

6Front panel

4 Two screws (+BVTP3x8)

3Connector (CN830)

2 Connector (CN390)

1Wire (flat type) (17core) (CN3)

5Claw

Page 14

Image 14

Sony MDS-JE770 Upper Case, Front Panel Section, Case 1Two screws CASE 3TP2 1 Screw CASE 3TP2, Two screws +BVTP3x8

Contents

MDS-JE770 SPECIFICATIONS9-873-890-11 MINIDISC DECKMDS-JE770 Genera l Power requirementsSupplied accessories SELF-DIAGNOSISFUNCTIONMDS-JE770 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTSSelecting the Test Mode 6. DIAGRAMS TABLE OF CONTENTS3. DISASSEMBLY Table of Error CodesFlexible Circuit Board Repairing MDS-JE770 SECTION SERVICE NOTESNotes on chip component replacement NOTES ON LASER DIODE EMISSION CHECKJIG FOR CHECKING BD BOARD WAVEFORM MDS-JE770MDS-JE770 Record PrecedureDisplay Precedure KSN-260B OPTICAL PICK-UPBLOCK TYPE DISCRIMINATIONMDS-JE770 KSN-260EProcedure CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSFORCED RESET @CN406MDS-JE770 RETRY CAUSE DISPLAY MODEProcedure Reading the Display Reading the DisplayMDS-JE770 Hexadecimal t Binary Conversion TableMain unit MDS-JE770 SECTION GENERALBUTTON DESCRIPTIONS Parts IdentificationMDS-JE770 SECTION DISASSEMBLY 3-1.DISASSEMBLY FLOW3Connector CN830 2 Connector CN390 3-2.UPPER CASE3-3.FRONT PANEL SECTION 1Wire flat type 17core CN3 5Claw3 Connector CN400 2 Wire flat type 23core CN1 3-4.MAIN BOARD3-5.PT BOARD, VOL-SELBOARD SP model 1 Wire flat type 27core CN2 7 MAIN boardMDS-JE770 3-6.MECHANISM DECK SECTION MDM-7A3-7.OVER LIGHT HEAD HR901, BD BOARD 4 Remove the solder five portionMDS-JE770 3-8.HOLDER ASSY3-9.LOADING MOTOR ASSY M103 2 ClawMDS-JE770 3-10.SLED MOTOR ASSY M102, SLIDER3-11.OPTICAL PICK-UP 5 Remove the claw Shift the slider in the arrow2Spindle motor ASSY M101 3-12.SPINDLE MOTER ASSY M101MDS-JE770 1 Three screws M1.7, tappingMDS-JE770 SECTION TEST MODE 4-1.PRECAUTIONS FOR USE OF TEST MODE4-2.SETTING THE TEST MODE 4-3.EXITING THE TEST MODEDisplay 4-5.SELECTING THE TEST MODEMDS-JE770 Group4-5-1.Operating the Continuous Playback Mode MDS-JE7704-7.TEST MODE DISPLAYS 2. Error rate display4-6.FUNCTIONS OF OTHER BUTTONS 1. Mode display4-9.AUTOMATIC SELF-DIAGNOSISFUNCTION 4-11.WHEN MEMORY NG IS DISPLAYED4-8.MEANINGS OF OTHER DISPLAYS 4-10.INFORMATIONCheck before replacement MDS-JE770 SECTION ELECTRICAL ADJUSTMENTS5-1.PARTS REPLACEMENT AND ADJUSTMENT Adjustment flow MDS-JE770MDS-JE770 5-2.PRECAUTIONS FOR CHECKING LASER DIODE EMISSION5-4.PRECAUTIONS FOR ADJUSTMENTS Optical pick-upflexible boardChecking Procedure 5-5.USING THE CONTINUOUSLY RECORDED DISC5-6-1.Temperature Compensation Offset Check 5-6-2.Laser Power Check5-6-6.Traverse Check 5-6-4.Auto Check5-6-5.Other Checks Procedure5-6-7.Focus Bias Check 5-6-8.C PLAY Check MO Error Rate CheckCD Error Rate Check 5-6-9. Self-Recording/playbackCheck5-10.LASER POWER ADJUSTMENT 5-7.INITIAL SETTING OF ADJUSTMENT VALUE5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT Setting ProcedureProcedure 5-12.TRAVERSE ADJUSTMENT5-11.Iop NV SAVE Adjusting ProcedureMDS-JE770 5-13.FOCUS BIAS ADJUSTMENTAdjusting Procedure 5-14-1.CD Error Rate Check 5-14.ERROR RATE CHECK5-16.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 5-14-2.MO Error Rate CheckBD BOARD SIDE B 5-17.ADJUSTING POINTS AND CONNECTING POINTSBD BOARD SIDE A MDS-JE770PT board MDS-JE770 SECTION DIAGRAMS6-1.CIRCUIT BOARDS LOCATION KEY-SWboard MAIN board HP board KB boardWAVEFORMS -BD Board For schematic diagramsFor printed wiring boards MAIN BoardIC171 6-2.BLOCK DIAGRAMS - BD SECTIONMDS-JE770 IC190IC550 MAIN SECTIONIC310 IC740SemiconductorOVER LocationPage SemiconductorPage BD BOARD 2/2 Page BD BOARD 2/2 Page BD BOARD 2/2MDS-JE770 KMS - 260B/260EBOARD MDS-JE770MDS-JE770 Page44MDS-JE770 IC440Location SemiconductorMDS-JE770 Semiconductor MDS-JE770Location MDS-JE770 6-10.SCHEMATIC DIAGRAM - DISPLAY SECTION4747 BOARD PT BOARDMDS-JE770 VOL-SELMDS-JE770 6-12.SCHEMATIC DIAGRAM - POWER SECTION4949 MAIN BOARD 2/2 CN400 PageIC151 CXD2662R BD BOARD 6-13.IC BLOCK DIAGRAMSIC101 CXA2523AR BD BOARD IC141IC421 M5293L MAIN BOARD IC500 AK4524 MAIN BOARDIC440 M54641L MAIN BOARD MDS-JE770MDS-JE770 6-14.IC PIN FUNCTION DESCRIPTIONIC101 CXA2523AR RF Amplifier BD BOARD Pin Name MDS-JE770Pin No DesriptionAbbreviation EFM Eight to Fourteen Modulation PLL Phase Locked LoopMDS-JE770 VCO Voltage Controlled OscillatorMDS-JE770 TFDRPin No IC1 M30803MG-106FPSYSTEM CONTROL MAIN BOARDMDS-JE770 Pin NameMDS-JE770 ADA. LATCHMDS-JE770 BEEP SWIC760 MSM9201-04GS-KFL DRIVER DISPLAY BOARD MDS-JE770MDS-JE770 SECTION EXPLODED VIEWS7-1.CHASSIS SECTION not supplied 7-2.FRONT PANEL SECTIONMDS-JE770 supplied with J790312 7-3.MECHANISM SECTION-1 MDM-7AMDS-JE770 313M103 S102HR901 MDS-JE770MDS-JE770 ELECTRICAL PARTS LISTSECTION MDS-JE770 Ref. NoMDS-JE770 DISPLAY HP KB KEY-SW MDS-JE770 KEY-SWMAIN MDS-JE770 MAIN MDS-JE770 MAIN Q490MDS-JE770 MAIN PT VOL-SELMEMO MDS-JE770Description of Revision MDS-JE770 REVISION HISTORYDate 2001.05