Sony MDS-JB920 Schematic Diagram BD Switch Section, Printed Wiring Board BD Switch Section

Page 54

MDS-JB920

6-15. SCHEMATIC DIAGRAM – BD SWITCH Section –

 

 

• IC Block Diagrams

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– BD Board –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC101

CXA2523AR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MORFO

MORFI

RFO

OPN

OPO

ADDC

COMPP

COMPO

AGCI

RF AGC

 

RF

PEAK

 

 

 

 

 

48

47

46

45

44

43

42

41

40

39

 

38

37

 

 

 

 

 

 

 

 

USROP

 

 

 

 

 

 

 

 

 

 

MAIN BOARD (1/3)

 

 

 

 

 

–

 

 

+

 

RF AGC

 

 

EQ

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

CN401

 

 

RFA1

 

 

 

 

 

–

USRC

 

DET

 

EQ

 

 

 

(Page 55)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+ –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RFA2

RFA3

 

BPF3T

 

 

 

 

 

 

 

 

I

1

 

–

 

 

 

PEAK3T

 

AUX

 

 

 

 

 

1

HLPT

–1

 

3T

 

 

SW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–

 

 

 

 

 

 

P-P

 

 

 

 

 

 

 

 

 

 

–

2

 

–2

 

 

 

 

 

 

 

 

 

 

J

2

 

–

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFST

PTGR

 

3T

 

WBL

TEMP

 

 

 

 

 

 

 

 

 

 

 

 

 

PEAK

 

 

 

 

 

 

 

 

 

–

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–2

 

 

 

 

 

 

 

 

 

 

 

 

CVB

 

–

 

 

 

BOTTOM

 

 

 

36

BOTM

 

 

 

+

–

2

 

–1

 

 

 

 

 

 

 

VC

3

 

 

GRV

 

 

 

PBH

 

 

 

 

 

 

–

GRVA

PBSW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WBL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

ABCD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

–

 

 

 

 

 

 

 

 

34

FE

 

 

A

4

 

 

 

 

 

 

 

 

 

 

33

AUX

 

 

 

 

–

 

 

 

 

 

 

 

 

 

 

 

IVR

–

AA

 

–

 

 

 

 

 

 

BPFC

 

 

 

 

 

 

–

ABCDA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32

ADFG

 

 

B

5

+

 

 

 

 

 

 

 

 

 

 

 

31

ADAGC

 

 

 

IVR

–

BB

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

30

ADIN

 

 

 

 

 

 

 

–

FEA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–

 

 

 

 

 

 

 

 

 

 

 

C

6

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IVR

–

CC

 

 

 

 

 

 

 

DET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BPF22

 

 

 

 

 

 

 

6-16.

PRINTED WIRING BOARD – BD SWITCH Section –

 

 

 

 

 

–

 

 

 

ADIP

 

 

 

 

 

 

 

 

 

 

–

 

 

WBL

 

 

 

29

ADFM

•See page 45 for Circuit Boards Location.

 

 

 

 

 

+

ATA

 

AGC

 

 

 

D

7

+

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

IVR

–

DD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WBL

 

 

–1

 

 

TG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SE

 

 

 

 

 

 

 

 

 

–

 

PTGR

 

–2

 

 

28

 

 

E

8

+

 

 

 

 

 

 

SEA

 

 

 

 

 

+

EE'

 

 

 

 

 

 

 

 

 

IVR

–

EE

 

+

 

 

 

 

 

 

27

CSLED

 

 

 

–

 

 

–

 

 

 

 

 

 

 

 

 

 

 

 

 

EFB

+

TESW

 

 

–1

 

 

TG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TE

 

 

 

 

 

 

EBAL

 

 

 

 

 

 

–2

 

 

26

 

 

 

 

 

 

 

ESW

 

 

 

 

TEA

 

 

 

MAIN BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

9

+

 

 

 

 

 

 

 

 

 

 

 

 

 

CN401

 

+

 

 

 

 

 

 

 

 

 

 

 

 

(Page 63)

 

IVR

–

FF

 

 

 

 

 

WBL

 

 

 

 

 

 

 

–

 

FF'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3T

 

VI CONV

25

WBLADJ

 

 

 

 

IV

 

 

 

 

 

 

 

 

 

 

 

GSW

 

FBAL

 

 

 

 

 

EQ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PD

10

 

 

 

AUXSW

 

 

 

BGR

 

 

 

 

 

 

 

 

+

–

 

 

 

COMMAND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

–

 

SCRI - PARA

 

VREF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APC

11

 

 

 

 

DECODE

 

 

 

 

 

 

 

 

 

APCREF

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

14

 

15

16

17

18

19

20

21

22

23

24

 

 

 

 

 

GND

TEMPI

 

TEMPR

SWDT

SCLK

XLAT

XSTBY

F0CNT

VREF

EQADJ

3TADJ

VCC

 

 

– 69 –

 

 

 

 

 

 

 

 

– 70 –

 

 

 

 

 

Page 53 Page 55
Image 54
Page 53 Page 55
Contents Specifications MDS-JE520MDM-5A SELF-DIAGNOSIS Function GeneralItems of Error History Mode Items and Contents Table of Contents DiagramsSection Servicing Notes Flexible Circuit Board Repairing VarningVaroitus JIG for Checking BD Board Waveform IOPRecord Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetREC/PLAY Retry Cause Display Mode PrecedureHexadecimal nBinary Conversion Table Section General Location of ControlsFront view Rear view Page Page Section Disassembly CaseFront Panel Seciton Main BoardMechanism Section MDM-5A Slider CAMBase Unit MBU-5A, BD Board SW BOARD, Loading Motor M103Setting the Test Mode Section Test ModePrecautions for USE of Test Mode Exiting the Test ModeSelecting the Test Mode Display Contents Mark GroupOperating the Continuous Playback Mode Non-Volatile Memory Mode EEP ModeMID Auto gain display Not used in servicing Test Mode DisplaysFunctions of Other Buttons Detrack check display Not used in servicingDisplay Contents When Lit When Off Meanings of Other DisplaysSection Electrical Adjustments Parts Replacement and AdjustmentPrecautions for Adjustments Precautions for Checking Laser Diode EmissinonPrecautions for USE of Optical PICK-UP KMS-260A Laser power meterCheck Prior to Repairs Temperature Compensation Offset CheckLaser Power Check Traverse CheckFocus Bias Check Play Checking MO Error Rate CheckCD Error Rate Check Self-Recording/playback CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Recording and Displaying the IOP InformationTraverse Adjustment Focus Bias Adjustment CD Auto Gain Control Output Level Adjustment Error Rate CheckAuto 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 Xrst SrdtSens SqsyMvci XrasXWE AsyoSprd SrdrSfdr SpfdMain Board IC100 CXD8607N A/D Converter TEST2 AvddlVDD1 LvddMain Board IC800 M30610MCA-264FP System Controller MDS-JB920 REC Analog Block Diagram Servo Section∙ Signal Path REC DigitalBlock Diagram Main Section ∙ Signal Path Play Analog OUTPlay Digital 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 IC Block Diagrams BD Board IC101 Schematic Diagram BD Switch SectionPrinted Wiring Board BD Switch Section CXA2523ARIC121 CXD2654R IC152 BH6511FS-E2IC203 Main Board IC100 CXD8607NIC101 CXA8054M CXA8042ASIC200 CXD8767N SN74HC153ANS SN74HCU04ANS-E20Section Exploded Views Chassis SectionFront Panel Section Supplied with RV760206 201 204 205209 4-988-466-21 Spring ELECTROSTATIC, Leaf Base Unit Section MBU-5A Section Electrical Parts List Diode F1J6TP TANTAL. ChipDiode CXA2523ARDisp Main C252 Mylar CXA8042AS HZS6C1LHZ7.5CP-TK SN74HC153ANS390 LED SEL6210S-TH10 Standby Main PSWCoil with Core Vibrator LED SEL6810A-TH10 Mega Control TransistorSW VOL Sony Corporation
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