Sony MDS-JB920 service manual Main Board IC100 CXD8607N, IC101 CXA8054M, IC203, CXA8042AS

Page 56

– MAIN Board –

IC100

CXD8607N

 

 

 

 

 

 

INRP

1

+

 

 

 

+

56

INLP

INRM

2

–

MODULATOR

MODULATOR

–

55

INLM

 

 

 

REFI

3

 

 

 

 

 

54

REFO

AVDD

4

 

 

 

 

 

53

LVSS

AVSS

5

 

DECIMATION

DECIMATION

 

52

LVDD

APD

6

 

 

51

AVSS(LF)

 

FILTER

 

FILTER

VOLTAGE

NU

7

 

 

 

 

50

NU

 

 

 

 

REFERENCE

NU

8

 

LOW CUT

 

LOW CUT

 

49

NU

TEST1

9

 

 

 

48

VSS1(LF)

 

FILTER

 

FILTER

 

LRCK1

10

 

 

 

 

 

47

TEST3

BCK1

11

 

 

 

 

 

46

TEST2

ADDT

12

 

 

I/O

 

 

45

VSS1

V35A

13

 

 

 

 

44

VDD1

 

 

 

 

 

VSS1 (LF)

14

 

 

 

 

 

43

VDD1

MCKI

15

 

 

OVER

 

 

42

VDD2

DPD

16

 

 

MOIZE

 

41

L1

 

ATT

SAMP

PLM

 

 

 

SHAPER

 

 

VSS2(LF)

17

 

 

FILTER

 

40

AVDDL

 

 

 

 

INIT

18

 

 

 

 

 

39

L2

MODE

19

CPU

 

 

 

 

38

AVSSL

SHIFT

20

 

 

 

 

37

XVSS

INTERFACE

 

 

 

 

LATCH

21

 

 

 

 

36

XIN

 

I/O

 

 

 

256CK

22

 

 

 

 

35

XOUT

 

 

 

 

 

V35D

23

 

 

 

 

 

34

XVDD

VSS2

24

 

 

 

 

 

33

AVSSR

512CK

25

 

 

 

 

 

32

R2

BCK2

26

 

 

OVER

NOIZE

 

31

AVDDR

DADT

27

 

ATT

SAMP

PLM

30

R1

 

SHAPER

 

 

FILTER

 

LRCK2

28

 

 

 

 

29

VDD2

 

 

 

 

 

IC101

CXA8054M

 

 

 

 

 

 

 

VREF

AINR+

AINR–

OUTR

VREFR

 

 

OUTR–

OUTR+

AVDD

20

19

18

17

16

15

14

13

12

11

 

 

–

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

–

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

–

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

–

 

 

 

 

 

1

2

3

4

5

6

7

8

9

10

VREF

AVSS

AINL+

AINL–

OUTL

VREFL

 

 

OUTL–

OUTL+

IC203, 204

CXA8042AS

 

 

 

I01+

1

 

 

28

IN2–

I02–

2

 

 

27

IN2+

NC

3

 

 

26

NC

I01–

4

 

 

25

IN1+

I02+

5

 

SWITCHING

24

IN1–

NC

6

 

CIRCUIT

23

NC

 

 

VCC2

7

 

 

22

C4

C2

8

 

 

21

C3

C1

9

 

 

20

GND2

 

 

 

 

19

VEE2

VCC1

10

 

 

 

 

 

 

REFERENCE

CONSTANT

18

VEE1

VREF

11

VOLTAGE

CURRENT

17

C6

 

 

CIRCUIT

CIRCUIT

 

 

 

 

 

 

 

CONTROL

16

C5

VCNT

12

 

CIRCUIT

15

CIREF

GND1

13

 

 

 

 

RIREF

14

 

 

 

 

– 72 –

Page 55 Page 57
Image 56
Page 55 Page 57
Contents MDM-5A SpecificationsMDS-JE520 SELF-DIAGNOSIS Function GeneralItems of Error History Mode Items and Contents Section Servicing Notes Table of ContentsDiagrams Varoitus Flexible Circuit Board RepairingVarning JIG for Checking BD Board Waveform IOPRecord Precedure REC/PLAY Checks Prior to Parts Replacement and AdjustmentsForced Reset Retry Cause Display Mode PrecedureHexadecimal nBinary Conversion Table Front view Rear view Section GeneralLocation of Controls Page Page Section Disassembly CaseFront Panel Seciton Main BoardMechanism Section MDM-5A Slider CAMBase Unit MBU-5A, BD Board SW BOARD, Loading Motor M103Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test ModeSelecting the Test Mode Display Contents Mark GroupMID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode Test Mode Displays Functions of Other ButtonsAuto gain display Not used in servicing Detrack check display Not used in servicingDisplay Contents When Lit When Off Meanings of Other DisplaysSection Electrical Adjustments Parts Replacement and AdjustmentPrecautions for Checking Laser Diode Emissinon Precautions for USE of Optical PICK-UP KMS-260APrecautions for Adjustments Laser power meterTemperature Compensation Offset Check Laser Power CheckCheck Prior to Repairs Traverse CheckPlay Checking MO Error Rate Check CD Error Rate CheckFocus Bias Check Self-Recording/playback CheckInitial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Focus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points IC PIN Function Description Section DiagramsBD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMP Srdt SensXrst SqsyXras XWEMvci AsyoSrdr SfdrSprd SpfdMain Board IC100 CXD8607N A/D Converter Avddl VDD1TEST2 LvddMain Board IC800 M30610MCA-264FP System Controller MDS-JB920 Block Diagram Servo Section ∙ Signal PathREC Analog REC DigitalPlay Digital OUT Block Diagram Main Section∙ Signal Path Play Analog OUT Circuit Boards Location Printed Wiring Boards BD Section MDS-JB920 Schematic Diagram BD /2 See 53 for Waveforms. See page 70 and 71 for IC Block DiagramsWaveforms BD board Main board Disp board MDS-JB920 MDS-JB920 MDS-JB920 MDS-JB920 Other layers pattern Side a US, CND Schematic Diagram Panel Section See page 54 for Waveforms Schematic Diagram BD Switch Section Printed Wiring Board BD Switch SectionIC Block Diagrams BD Board IC101 CXA2523ARIC121 CXD2654R IC152 BH6511FS-E2Main Board IC100 CXD8607N IC101 CXA8054MIC203 CXA8042ASIC200 CXD8767N SN74HC153ANS SN74HCU04ANS-E20Section Exploded Views Chassis SectionFront Panel Section Supplied with RV760209 4-988-466-21 Spring ELECTROSTATIC, Leaf 206 201204 205 Base Unit Section MBU-5A Section Electrical Parts List TANTAL. Chip DiodeDiode F1J6TP CXA2523ARDisp Main C252 Mylar HZS6C1L HZ7.5CP-TKCXA8042AS SN74HC153ANS390 Main PSW Coil with Core VibratorLED SEL6210S-TH10 Standby LED SEL6810A-TH10 Mega Control TransistorSW VOL Sony Corporation
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