Sony MDS-NT1 service manual IC PIN Function Description

Page 51

MDS-NT1

6-13. IC PIN FUNCTION DESCRIPTION

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

Pin No.

Pin Name

I/O

 

 

Description

 

 

 

 

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 to the automatic power control circuit

12

APCREF

I

Reference voltage input 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 CXD2664R

17

SCLK

I

Serial data transfer clock signal input from the CXD2664R

18

XLAT

I

Serial data latch pulse signal input from the CXD2664R

 

 

 

 

 

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

terminal

 

 

 

 

 

 

 

 

 

 

 

 

21

VREF

O

Reference voltage output terminal

Not used

 

 

 

 

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 terminal

 

 

 

 

27

CSLED

I

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

 

 

 

 

 

28

SE

O

Sled error signal output terminal

 

29

ADFM

O

FM signal output terminal 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 CXD2664R

 

 

 

 

33

AUX

O

Auxiliary signal (I3 signal/temperature signal) output to the CXD2664R

34

FE

O

Focus error signal output terminal

 

 

 

 

 

35

ABCD

O

Light amount signal (ABCD) output terminal

36

BOTM

O

Light amount signal (RF/ABCD) bottom hold output terminal

37

PEAK

O

Light amount signal (RF/ABCD) peak hold output terminal

 

 

 

 

38

RF

O

Playback EFM RF signal output terminal

 

 

 

 

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

42

COMPP

I

User comparator input terminal

Not used

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

 

 

 

 

45

OPN

I

User operational amplifier inversion input terminal Not used

 

 

 

 

 

 

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

 

 

51

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Contents MDS-NT1 SpecificationsMDS-NT1 SELF-DIAGNOSIS Function Playback Recording Cause/Remedy Indicator Green RedMDS-NT1 Items of Error History Mode Items and ContentsError Code Details of Error Table of Error CodesSELF-DIAGNOSIS Function Table of ContentsDisassembly DiagramsFlexible Circuit Board Repairing BD Board Conductor Side MDS-NT1 Section Servicing NotesJIG for Checking BD Board Waveform Record Procedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and Adjustments in MDSystem Requirements Service ModeSoftware Reset Microcomputer Version DisplayFront View MDS-NT1 Section GeneralDisassembly Flow MDS-NT1 Section DisassemblyCase Upper MD Mechanism Deck MDM-7S2B Main BoardBD BOARD, Over Write Head HR901 Front Panel SectionLoading Motor Assy M103 Holder AssyOptical PICK-UP KMS-262E Sled Motor Assy M102Spindle Motor Assy M101 Releasing the Test Mode MDS-NT1 Section Test ModePrecautions for USE of Test Mode Setting the Test ModeCheck Selecting the Test ModeOperating the Continuous Playback Mode Information Automatic SELF-DIAGNOSIS FunctionMDS-NT1 Section Electrical Adjustments Parts Replacement and AdjustmentCheck before replacement YES Adjustment flowKMS-262A KMS-262E Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-262A/262E HOW to Identify Optical PICK-UP KMS- 262A/KMS-262ELaser power meter Precautions for AdjustmentsChecks Prior to Repairs Using the Continuously Recorded DiscTemperature Compensation Offset Check Laser Power CheckAuto Check Other ChecksTraverse Check Self-Recording/playback Check Play Check MO Error Rate CheckCD Error Rate Check Focus Bias CheckRecording and Displaying the Iop Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Laser Power AdjustmentIop NV Save Traverse AdjustmentENTER/YES button Focus Bias AdjustmentMO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjustment and Checking Loacation Block Diagram Servo Section MDS-NT1 Section Diagrams36 a Block Diagram Main Section22.7 ns Waveforms BD BoardSemiconductor Location Printed Wiring Board BD Board4AA 3AA B3B 2BB Schematic Diagram BD Board 2/2 See page 38 for WaveformsIC451 Printed Wiring Board Main Board Component SideMain Board Printed Wiring Board Main Board Conductor Side1AA AA2 AA3 GND Panel Board Conductor Side Printed Wiring Board Panel BoardSchematic Diagram Panel Board CXA2523AR IC Block Diagrams BD BoardMain Board IC401 BH6519FS-E2IC440 M54641L IC PIN Function Description BD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMPMNT2 Xbusy Xcas APC Main Board IC301 M30835FJGP-01 System Controller PLAY-SW Pin No Extal Case Section Section MDS-NT1 Exploded Views56 4-951-620-01 Screw 2.6X8, +BVTP Case B Section 102 101 103104 105 311 310 319 304 308 302 306 320 301 305 313 314 315 316317 303 307 355 354 362 359 352 359358 357 360 356 364Resistors MDS-NT1 Section Electrical Parts ListDiode MDS-NT1 Main SwitchFB1 Miscellaneous MDS-NT1 Main PanelMotor ASSY, Loading Revision History
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