Sony MDS-JB920 service manual IC200 CXD8767N

Page 57

IC200

CXD8767N

 

 

 

 

 

 

 

 

 

 

INVO

1

 

 

 

 

 

 

 

56

INVI

 

BCKI

2

 

 

OVERFLOW DETECTER

OR

 

 

55

TEST

 

 

 

 

 

 

 

 

 

 

DATA1

3

S/P

 

FIR1

FIR2

FIR3

D/F TIMNG CIRCUIT

 

54

128FsO

 

 

 

IIR

 

 

 

 

 

 

 

 

 

 

 

 

 

LRCKI

4

ATT

 

 

 

 

53

DINIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIR4

 

 

 

 

 

 

INIT

5

 

 

 

 

 

 

 

52

OVFLAG

 

ATT

6

 

 

OVERFLOW DETECTER

 

“0” DETECT

MUTE CIRCUIT

51

MUTEL

 

 

 

 

 

 

 

 

 

SHIFT

7

MODE

ATT

FIR1

FIR2

FIR3

50

MUTER

 

 

 

 

 

 

LATCH

8

 

IIR

 

 

 

 

 

49

NU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIR4

 

 

 

 

 

 

SYSM

9

 

 

 

 

 

 

 

48

64FSI

 

NU

10

 

3rd order

 

 

ATT

 

 

47

MCKIN

 

 

 

 

L.I.P

X0.75

 

 

 

 

 

 

 

 

NOISE

 

 

 

 

 

NU

11

 

 

 

 

 

46

DVSS1

 

 

SHAPER

 

 

 

 

 

 

 

 

 

REGISTER

DITHER

 

 

 

 

 

 

 

DVSS1

12

 

 

 

 

 

 

45

DVDD1

 

 

 

 

 

 

ATT

 

 

 

 

 

DVDD1

13

 

3rd order

 

 

 

 

44

DVDD2

 

 

 

X0.75

 

 

 

 

 

 

NOISE

L.I.P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NU

14

 

SHAPER

 

 

 

 

 

43

256FSO

 

 

 

 

 

 

 

 

 

CKCTL

15

 

 

 

 

 

CLOCK BUFFER

42

CKVdd

 

MUTE

16

 

 

 

 

 

41

LVCKO

 

 

 

 

 

 

CLOCK GENERATOR

 

 

SYNC

17

 

 

 

 

 

 

40

64FSO

 

VSUB

18

 

 

 

 

 

 

39

DVSS2

 

 

 

 

 

 

 

 

 

AVDDL1

19

 

 

 

 

 

 

 

38

AVDDR1

 

L1(–)

20

 

Buffer(–)

PLM-L1

 

PLM-R1

Buffer(–)

 

37

R1(–)

 

L1(+)

21

 

Buffer(+)

 

 

 

Buffer(+)

 

36

R1(+)

 

AVSSL1

22

 

 

 

 

 

 

 

35

AVSSR2

 

AVSSL2

23

 

 

 

 

 

 

 

34

AVSSR2

 

L2(+)

24

 

Buffer(+)

PML-L2

 

PLM-R2

Buffer(+)

 

33

R2(+)

 

L2(–)

25

 

Buffer(–)

 

 

 

Buffer(–)

 

32

R2(–)

 

AVDDL2

26

 

 

 

 

 

 

 

31

AVDDR2

 

XVDD

27

 

1024Fs-CLOCK

 

 

 

 

 

30

XVSS

 

 

 

 

 

 

 

 

 

 

 

 

XVDD

28

 

BUFFER

 

 

 

 

 

29

XIN

 

 

 

 

 

 

 

 

– 73 –

Image 57
Contents Specifications MDS-JE520MDM-5A General SELF-DIAGNOSIS FunctionItems of Error History Mode Items and Contents Table of Contents DiagramsSection Servicing Notes Flexible Circuit Board Repairing VarningVaroitus IOP JIG for Checking BD Board WaveformRecord Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetREC/PLAY Precedure Retry Cause Display ModeHexadecimal nBinary Conversion Table Section General Location of ControlsFront view Rear view Page Page Case Section DisassemblyMain Board Front Panel SecitonSlider CAM Mechanism Section MDM-5ASW BOARD, Loading Motor M103 Base Unit MBU-5A, BD BoardPrecautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeDisplay Contents Mark Group Selecting the Test ModeOperating the Continuous Playback Mode Non-Volatile Memory Mode EEP ModeMID Functions of Other Buttons Test Mode DisplaysAuto gain display Not used in servicing Detrack check display Not used in servicingMeanings of Other Displays Display Contents When Lit When OffParts Replacement and Adjustment Section Electrical AdjustmentsPrecautions for USE of Optical PICK-UP KMS-260A Precautions for Checking Laser Diode EmissinonPrecautions for Adjustments Laser power meterLaser Power Check Temperature Compensation Offset CheckCheck Prior to Repairs Traverse CheckCD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check Self-Recording/playback CheckTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Focus Bias Adjustment Auto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Section Diagrams BD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMPIC PIN Function Description Sens SrdtXrst SqsyXWE XrasMvci AsyoSfdr SrdrSprd SpfdMain Board IC100 CXD8607N A/D Converter VDD1 AvddlTEST2 LvddMain Board IC800 M30610MCA-264FP System Controller MDS-JB920 ∙ Signal Path Block Diagram Servo SectionREC Analog REC DigitalBlock Diagram Main Section ∙ Signal Path Play Analog OUTPlay Digital OUT Circuit Boards Location Printed Wiring Boards BD Section MDS-JB920 53 for Waveforms. See page 70 and 71 for IC Block Diagrams Schematic Diagram BD /2 SeeWaveforms 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 Printed Wiring Board BD Switch Section Schematic Diagram BD Switch SectionIC Block Diagrams BD Board IC101 CXA2523ARIC152 BH6511FS-E2 IC121 CXD2654RIC101 CXA8054M Main Board IC100 CXD8607NIC203 CXA8042ASIC200 CXD8767N SN74HCU04ANS-E20 SN74HC153ANSChassis Section Section Exploded ViewsSupplied with RV760 Front Panel Section206 201 204 205209 4-988-466-21 Spring ELECTROSTATIC, Leaf Base Unit Section MBU-5A Section Electrical Parts List Diode TANTAL. ChipDiode F1J6TP CXA2523ARDisp Main C252 Mylar HZ7.5CP-TK HZS6C1LCXA8042AS SN74HC153ANS390 Coil with Core Vibrator Main PSWLED SEL6210S-TH10 Standby LED SEL6810A-TH10 Mega Control TransistorSW VOL Sony Corporation