Sony MDS-JB920 service manual Section Diagrams, IC PIN Function Description

Page 32

SECTION 6

DIAGRAMS

6-1. IC PIN FUNCTION DESCRIPTION

•BD BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)

Pin No.

Pin Name

I/O

 

Function

 

 

 

 

 

 

1

 

I

I

I-V converted RF signal I input from the optical pick-up block detector

 

 

 

 

 

 

2

 

J

I

I-V converted RF signal J input from the optical pick-up block detector

 

 

 

 

 

 

3

 

VC

O

Middle point voltage (+1.65V) generation output terminal

 

 

 

 

 

 

4 to 9

 

A to F

I

Signal input from the optical pick-up detector

 

 

 

 

 

 

10

 

PD

I

Light amount monitor input from the optical pick-up block laser diode

 

 

 

 

 

 

11

 

APC

O

Laser amplifier output terminal to the automatic power control circuit

 

 

 

 

 

 

12

APCREF

I

Reference voltage input terminal for setting laser power

 

 

 

 

 

 

 

13

 

GND

—

Ground terminal

 

 

 

 

 

 

 

14

 

TEMPI

I

Connected to the temperature sensor

 

 

 

 

 

 

15

TEMPR

O

Output terminal for a temperature sensor reference voltage

 

 

 

 

 

 

16

 

SWDT

I

Writing serial data input from the CXD2654R (IC121)

 

 

 

 

 

 

17

 

SCLK

I

Serial data transfer clock signal input from the CXD2654R (IC121)

 

 

 

 

 

 

18

 

XLAT

I

Serial data latch pulse signal input from the CXD2654R (IC121)

 

 

 

 

 

 

19

XSTBY

I

Standby signal input terminal “L”: standby (fixed at “H” in this set)

 

 

 

 

 

 

20

 

F0CNT

I

Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input

 

from the CXD2654R (IC121)

 

 

 

 

 

 

 

 

 

 

 

 

21

 

VREF

O

Reference voltage output terminal Not used (open)

 

 

 

 

 

22

 

EQADJ

I

Center frequency setting terminal for the internal circuit (EQ)

 

 

 

 

 

23

 

3TADJ

I

Center frequency setting terminal for the internal circuit (BPF3T)

 

 

 

 

 

 

24

 

VCC

—

Power supply terminal (+3.3V)

 

 

 

 

 

25

WBLADJ

I

Center frequency setting terminal for the internal circuit (BPF22)

 

 

 

 

 

26

 

TE

O

Tracking error signal output to the CXD2654R (IC121)

 

 

 

 

 

27

 

CSLED

I

Connected to the external capacitor for low-pass filter of the sled error signal

 

 

 

 

 

28

 

SE

O

Sled error signal output to the CXD2654R (IC121)

 

 

 

 

 

 

29

 

ADFM

O

FM signal output of the ADIP

 

 

 

 

 

 

30

 

ADIN

I

Receives a ADIP FM signal in AC coupling

 

 

 

 

31

ADAGC

I

Connected to the external capacitor for ADIP AGC

 

 

 

 

 

32

 

ADFG

O

ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2654R (IC121)

 

 

 

 

 

33

 

AUX

O

Auxiliary signal (I3 signal/temperature signal) output to the CXD2654R (IC121)

 

 

 

 

 

34

 

FE

O

Focus error signal output to the CXD2654R (IC121)

 

 

 

 

 

35

 

ABCD

O

Light amount signal (ABCD) output to the CXD2654R (IC121)

 

 

 

 

 

36

 

BOTM

O

Light amount signal (RF/ABCD) bottom hold output to the CXD2654R (IC121)

 

 

 

 

 

37

 

PEAK

O

Light amount signal (RF/ABCD) peak hold output to the CXD2654R (IC121)

 

 

 

 

 

38

 

RF

O

Playback EFM RF signal output to the CXD2654R (IC121)

 

 

 

 

39

RFAGC

I

Connected to the external capacitor for RF auto gain control circuit

 

 

 

 

 

40

 

AGCI

I

Receives a RF signal in AC coupling

 

 

 

 

 

41

COMPO

O

User comparator output terminal

Not used (open)

 

 

 

 

 

42

COMPP

I

User comparator input terminal

Not used (fixed at “L”)

 

 

 

 

 

43

 

ADDC

I

Connected to the external capacitor for cutting the low band of the ADIP amplifier

 

 

 

 

 

44

 

OPO

O

User operational amplifier output terminal Not used (open)

 

 

 

 

 

45

 

OPN

I

User operational amplifier inversion input terminal Not used (fixed at “L”)

 

 

 

 

 

 

46

 

RFO

O

RF signal output terminal

 

 

 

 

 

 

47

 

MORFI

I

Receives a MO RF signal in AC coupling

 

 

 

 

 

48

MORFO

O

MO RF signal output terminal

 

 

 

 

 

 

 

 

– 32 –

Page 31 Page 33
Image 32
Page 31 Page 33
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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