Sony MDS-PC3 specifications Mvci

Page 51

Pin No.

Pin Name

I/O

Function

 

 

 

 

52

MVCI

I (S)

Clock input from an external VCO (Fixed at “L”)

 

 

 

 

53

ASYO

O

Playback EFM duplex signal output

 

 

 

 

54

ASYI

I (A)

Playback EFM comparator slice level input

 

 

 

 

55

AVDD

+3V power supply (Analog)

 

 

 

 

56

BIAS

I (A)

Playback EFM comparator bias current input

 

 

 

 

57

RFI

I (A)

Playback EFM RF signal input

 

 

 

 

58

AVSS

Ground (Analog)

 

 

 

 

59

PCO

O (3)

Phase comparison output for the recording/playback EFM master PLL

 

 

 

 

60

FILI

I (A)

Filter input for the recording/playback EFM master PLL

 

 

 

 

61

FILO

O (A)

Filter output for the recording/playback EFM master PLL

 

 

 

 

62

CLTV

I (A)

Internal VCO control voltage input for the recording/playback EFM master PLL

 

 

 

 

63

PEAK

I (A)

Light amount signal peak hold input from the CXA2523AR

 

 

 

 

64

BOTM

I (A)

Light amount signal bottom hold input from the CXA2523AR

 

 

 

 

65

ABCD

I (A)

Light amount signal input from the CXA2523AR

 

 

 

 

66

FE

I (A)

Focus error signal input from the CXA2523AR

 

 

 

 

67

AUX1

I (A)

Auxiliary A/D input

 

 

 

 

68

VC

I (A)

Middle point voltage (+1.5V) input from the CXA2523AR

 

 

 

 

69

ADIO

O (A)

Monitor output of the A/D converter input signal (Not used)

 

 

 

 

70

AVDD

+3V power supply (Analog)

 

 

 

 

71

ADRT

I (A)

A/D converter operational range upper limit voltage input (Fixed at “H”)

 

 

 

 

72

ADRB

I (A)

A/D converter operational range lower limit voltage input (Fixed at “L”)

 

 

 

 

73

AVSS

Ground (Analog)

 

 

 

 

74

SE

I (A)

Sled error signal input from the CXA2523AR

 

 

 

 

75

TE

I (A)

Tracking error signal input from the CXA2523AR

 

 

 

 

76

DCHG

I (A)

Connected to +3V power supply

 

 

 

 

77

APC

I (A)

Error signal input for the laser digital APC (Fixed at “L”)

 

 

 

 

78

ADFG

I (S)

ADIP duplex FM signal input from the CXA2523AR (22.05 ± 1 kHz)

 

 

 

 

79

F0CNT

O

Filter f0 control output to the CXA2523AR

 

 

 

 

80

XLRF

O

Control latch output to the CXA2523AR

 

 

 

 

81

CKRF

O

Control clock output to the CXA2523AR

 

 

 

 

82

DTRF

O

Control data output to the CXA2523AR

83

APCREF

O

Reference PWM output for the laser APC

 

 

 

 

84

TEST0

O

PWM output for the laser digital APC (Not used)

 

 

 

 

85

TRDR

O

Tracking servo drive PWM output (–)

 

 

 

 

86

TFDR

O

Tracking servo drive PWM output (+)

 

 

 

 

87

DVDD

+3V power supply (Digital)

 

 

 

 

88

FFDR

O

Focus servo drive PWM output (+)

 

 

 

 

89

FRDR

O

Focus servo drive PWM output (–)

 

 

 

 

90

FS4

O

176.4 kHz clock signal output (X’tal) (Not used)

 

 

 

 

91

SRDR

O

Sled servo drive PWM output (–)

 

 

 

 

92

SFDR

O

Sled servo drive PWM output (+)

 

 

 

 

93

SPRD

O

Spindle servo drive PWM output (–)

 

 

 

 

94

SPFD

O

Spindle servo drive PWM output (+)

 

 

 

 

95

FGIN

I (S)

Test input (Fixed at “L”)

 

 

 

96 to 98

TEST1 to TEST3

I

 

 

 

 

 

99

DVSS

Ground (Digital)

100

EFMO

O

EFM output when recording

 

 

 

 

Abbreviation

EFM: Eight to Fourteen Modulation

PLL : Phase Locked Loop

VCO: Voltage Controlled Oscillator

51

Image 51
Contents MDS-PC3 SpecificationsTOC t Edit t TOC Edit t blank t SELF-DIAGNOSIS FunctionItems of Error History Mode Items and Contents Table of Error Codes Table of ContentsDisassembly DiagramsSection Service Notes Flexible Circuit Board RepairingLead free soldering JIG for Checking BD Board Waveform Record Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetMain Board Component Side Bit Binary Retry Cause Display ModeHexadecimal t Binary Conversion Table General Section Remote Parts DescriptionUsing the Display Hooking Up MD Mechanism Deck MDM-7A Section DisassemblyOver Light Head HR901, BD MD Board Main BoardLoading Motor Assy M103 Holder AssyOptical PICK-UP MD KMS-260B/JIN Sled Motor Assy M102, SliderSpindle Motor Assy M101 Exiting the Test Mode Section Test ModePrecautions for USE of Test Mode Setting the Test ModeDisplay Details Mark Group Selecting the Test ModeOperating the Continuous Playback Mode Functions of Other Buttons Test Mode DisplaysMode display Error rate displayMeanings of Other Displays Automatic SELF-DIAGNOSIS FunctionInformation Section Electrical Adjustments Parts Replacement and AdjustmentCheck before replacement Adjustment flow Precautions for Checking Laser Diode Emission Precautions for USE of Optical PICK- UP KMS-260BPrecautions for Adjustments Checks Prior to Repairs Using the Continuously Recorded DiscOther Checks Auto CheckCD Error Rate Check Play Check MO Error Rate CheckInitial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment Iop NV Save Traverse AdjustmentFocus Bias Adjustment MO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Diagrams MDS-PC3 Block Diagrams BD SectionSclk Cclk Main SectionSemiconductor Printed Wiring Board BD SectionPIN Function MDS-PC3 Printed Wiring Board Main Section PIN Functon MDS-PC3 Printed Wiring Board Panel Section Schematic Diagram Panel Section See page 35 for Waveforms IC101 CXA2523AR BD Board IC Block DiagramsLB1830M-S-TE-L Main Board BH3541F-E2 Main Board IC101 CXA2523AR RF Amplifier BD Board IC PIN FunctionsMNT0 FOK Mvci IC300 M30805SGP Main Board Shck MNT1 Chassis Section Section Exploded Views319 302 320 317 304 308 303 305 306 301 318 307 Mechanism MDM-7A351 MechanismRemarks Ref. No Description Section Electrical Parts ListMetal Chip Main PIN, Connector 2P Diode Main Panel KEY REFLECT/PROTECT SW MDS-PC3 Panel