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MiniDisc Player
Sony
MDS-S50 specifications MDS-JE470
Models:
MDS-S50
1
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Specification
Parts list
MDS-JE470 SECTION DIAGRAMS
Notes on chip component replacement
1Wire flat type 17core CN3 5Claw
Forced Reset
MDS-JE470 SECTION DISASSEMBLY
Procedure
Error rate display
MDS-JE470 SECTION ELECTRICAL ADJUSTMENTS
Page 69
Image 69
MDS-JE470
69
Page 68
Page 70
Page 69
Image 69
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Page 70
Contents
I nputs
SPECIFICATIONS
Outputs
MDS-JE470
SELF-DIAGNOSISFUNCTION
MDS-JE470
General Power requirements
Supplied accessories
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
MDS-JE470
Selecting the Test Mode
3. DISASSEMBLY
TABLE OF CONTENTS
6. DIAGRAMS
7. EXPLODED VIEWS
SAFETY CHECK-OUT
MDS-JE470 SECTION SERVICE NOTES
LEAKAGE
Notes on chip component replacement
MDS-JE470
JIG FOR CHECKING BD BOARD WAVEFORM
MDS-JE470
Record Precedure
Display Precedure
MDS-JE470
OPTICAL PICK-UPBLOCK TYPE DISCRIMINATION
KSN-260B
KSN-260E
FORCED RESET
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS
@CN406
Procedure
RETRY CAUSE DISPLAY MODE
Procedure
MDS-JE470
Reading the Display
MDS-JE470
Reading the Display
Hexadecimal t Binary Conversion Table
BUTTON DESCRIPTIONS
MDS-JE470 SECTION GENERAL
Main unit
Parts Identification
3-1.DISASSEMBLY FLOW
MDS-JE470 SECTION DISASSEMBLY
3-3.FRONT PANEL SECTION
3-2.UPPER CASE
3Connector CN830 2 Connector CN390
1Wire flat type 17core CN3 5Claw
3-5.PT BOARD, VOL-SELBOARD SP model
3-4.MAIN BOARD
6Two screws +BVTP3x8 3 Connector CN400
2 Wire flat type 23core CN1
3-7.OVER LIGHT HEAD HR901, BD BOARD
3-6.MECHANISM DECK SECTION MDM-7A
MDS-JE470
4 Remove the solder five portion
3-9.LOADING MOTOR ASSY M103
3-8.HOLDER ASSY
MDS-JE470
2 Claw
3-11.OPTICAL PICK-UP
3-10.SLED MOTOR ASSY M102, SLIDER
MDS-JE470
5 Remove the claw Shift the slider in the arrow
MDS-JE470
3-12.SPINDLE MOTER ASSY M101
2Spindle motor ASSY M101
1 Three screws M1.7, tapping
4-2.SETTING THE TEST MODE
4-1.PRECAUTIONS FOR USE OF TEST MODE
MDS-JE470 SECTION TEST MODE
4-3.EXITING THE TEST MODE
MDS-JE470
4-5.SELECTING THE TEST MODE
Display
Group
4-5-1.Operating the Continuous Playback Mode
MDS-JE470
4-7.TEST MODE DISPLAYS
4-6.FUNCTIONS OF OTHER BUTTONS
2. Error rate display
MDS-JE470
4-8.MEANINGS OF OTHER DISPLAYS
4-11.WHEN MEMORY NG IS DISPLAYED
4-9.AUTOMATIC SELF-DIAGNOSISFUNCTION
4-10.INFORMATION
MDS-JE470 SECTION ELECTRICAL ADJUSTMENTS
5-1.PARTS REPLACEMENT AND ADJUSTMENT
Check before replacement
MDS-JE470
Adjustment flow
5-4.PRECAUTIONS FOR ADJUSTMENTS
5-2.PRECAUTIONS FOR CHECKING LASER DIODE EMISSION
MDS-JE470
Optical pick-upflexible board
5-6.CHECKS PRIOR TO REPAIRS
5-5.USING THE CONTINUOUSLY RECORDED DISC
5-6-1.Temperature Compensation Offset Check
Checking Procedure
Checking Procedure
Procedure
MDS-JE470
5-6-4.Auto Check
5-6-8.C PLAY Check MO Error Rate Check
Checking Procedure
Checking Procedure
CD Error Rate Check
5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT
5-7.INITIAL SETTING OF ADJUSTMENT VALUE
5-10.LASER POWER ADJUSTMENT
5-8.RECORDING AND DISPLAYING THE Iop INFORMATION
Procedure
5-12.TRAVERSE ADJUSTMENT
Adjusting Procedure
MDS-JE470
5-13.FOCUS BIAS ADJUSTMENT
Adjusting Procedure
MDS-JE470
5-16.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
5-14.ERROR RATE CHECK
5-15.FOCUS BIAS CHECK
5-14-1.CD Error Rate Check
MDS-JE470
5-17.ADJUSTING POINTS AND CONNECTING POINTS
BD BOARD SIDE A
BD BOARD SIDE B
6-1.CIRCUIT BOARDS LOCATION
MDS-JE470 SECTION DIAGRAMS
PT board
KEY-SWboard MAIN board DISPLAY board BD board
For printed wiring boards
For schematic diagrams
MDS-JE470
WAVEFORMS -BD Board
MDS-JE470
6-2.BLOCK DIAGRAMS - BD SECTION
IC171
IC190
IC310
MAIN SECTION
IC550
IC781
Location
MAIN BOARD
Page
BD BOARD SIDE A
MDS-JE470
BD BOARD 2/2 Page BD BOARD 2/2 Page BD BOARD 2/2
Page
KMS - 260B/260E
MDS-JE470
BOARD
BD BOARD2/2 CN102 Page42
MDS-JE470
DISPLAY BOARD CN701 Page47
7MAIN BOARD 82/2
See page 51 for IC Block Diagrams
6-7.SCHEMATIC DIAGRAM - MAIN SECTION 2/2
MDS-JE470
MAIN
MDS-JE470
Location
Semiconductor
MDS-JE470
Location
Semiconductor
MDS-JE470
6-10.SCHEMATIC DIAGRAM - DISPLAY SECTION
PT BOARD
MDS-JE470
VOL-SELBOARD
6-12.SCHEMATIC DIAGRAM - POWER SECTION
4949
MDS-JE470
MDS-JE470
6-13.IC BLOCK DIAGRAMS
IC101 CXA2523AR BD BOARD
IC151 CXD2662R BD BOARD
IC500 AK4524 MAIN BOARD
MDS-JE470
IC440 M54641L MAIN BOARD
IC421 M5293L MAIN BOARD
MDS-JE470
6-14.IC PIN FUNCTION DESCRIPTION
IC101 CXA2523AR RF Amplifier BD BOARD
Pin No
Pin No
MDS-JE470
Pin Name
Desription
MDS-JE470
PLL Phase Locked Loop
Pin No
Pin Name
Pin No
MDS-JE470
Pin Name
Description
IC1 M30803MG-107FPSYSTEM CONTROL MAIN BOARD
MDS-JE470
Pin No
Pin Name
ADA. LATCH
MDS-JE470
BEEP SW
MDS-JE470
SECTION EXPLODED VIEWS
7-1.CHASSIS SECTION
MDS-JE470
7-2.FRONT PANEL SECTION
MDS-JE470
FL750
MDS-JE470
7-3.MECHANISM SECTION-1 MDM-7A
312
313
HR901
S102
M101
M102
ELECTRICAL PARTS LIST
SECTION
MDS-JE470 BD
Ref. No
MDS-JE470 BD
MDS-JE470 KEY-SW MAIN
DISPLAY
MDS-JE470 MAIN
MDS-JE470
MAIN
VOL-SEL
MDS-JE470
MAIN
MDS-JE470
Date
MDS-JE470 REVISION HISTORY
Description of Revision
2001.05