Sony HCD-MD373 service manual IC152 BH6511FS-E2, BD MD Board 2/2 IC121 CXD2654R

Page 66

IC152 BH6511FS-E2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAPA–

 

CAPA+

 

IN2R

IN2F

 

VM2

OUT2F

PGND2

OUT2R

 

VM12

 

OUT1R

 

PGND1

 

OUT1F

VM1

IN1F

IN1R

 

VDD

 

 

 

 

32

 

31

30

29

 

28

27

26

25

 

24

 

23

 

22

21

20

19

18

 

17

 

 

 

 

 

 

 

INTERFACE

 

AMP

 

AMP

 

 

AMP

 

 

 

AMP

 

INTERFACE

VDD

 

 

 

 

CHARGE

 

 

PREDRIVE

 

 

 

 

 

 

 

 

 

 

 

 

PREDRIVE

 

 

 

 

 

 

 

PUMP.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PREDRIVE

 

 

 

 

 

 

 

 

 

 

 

 

PREDRIVE

 

 

 

 

 

 

 

 

 

 

INTERFACE

 

AMP

 

AMP

 

 

AMP

 

 

 

AMP

 

INTERFACE

PSB

 

 

 

 

1

 

2

 

3

4

 

5

6

7

8

 

9

 

10

 

11

12

13

14

15

 

16

 

 

 

 

GND

 

VG

 

IN4R

IN4F

 

VM4

OUT4F

PGND4

OUT4R

 

VM34

 

OUT3R

 

PGND3

 

OUT3F

VM3

IN3F

IN3R

 

PSB

 

 

• BD (MD) Board (2/2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC121 CXD2654R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APCREF

 

 

 

 

 

 

 

 

 

 

 

EFMO

DVSS

TEST3

TEST2

TEST1

TEST0

SPFD

SPRD

 

SFDR

SRDR

FS4

FRDR

FFDR

DVDD

TFDR

TRDR

LDDR

DTRF

CKRF

XLRF

F0CNT

ADFG

APC

DCHG

 

 

 

 

100

99

98

97

96

95

94

93

 

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

 

 

 

 

 

 

 

 

 

SPINDLE

 

 

 

 

 

PWM

 

 

 

 

 

AUTO SEQUENCER

 

 

 

 

 

 

 

MNT0

1

 

 

 

 

 

 

SERVO

 

 

 

 

GENERATOR

 

 

 

 

 

 

 

 

 

75

TE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

74

SE

MNT1

2

MONITOR

 

EACH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

73

AVSS

MNT2

3

CONTROL

 

BLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MNT3

4

 

 

 

 

 

 

ADIP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

72

ADRB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

71

ADRT

 

 

 

 

 

 

 

DEMODULATOR/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70

AVDD

SWDT

5

 

 

 

 

 

DECODER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

69

ADIO

SCLK

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XLAT

7

CPU I/F

 

EACH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

68

VC

SRDT

8

 

 

 

 

BLOCK

 

 

 

 

 

 

SERVO

 

 

 

A/D

 

 

 

 

 

 

 

67

AUX1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DSP

 

 

CONVERTER

 

 

 

 

 

 

SENS

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANALOG

66 FE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XRST

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MUX

 

65

ABCD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APC

 

 

 

 

 

 

 

 

 

 

 

 

64

BOTM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SQSY

11

SUBCODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

63

PEAK

DQSY

12

PROCESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECP

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

62

CLTV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61

FILO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

FILI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EFM/ACIRC ENCODER/

DECODER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

59 PCO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XINT

14

 

 

 

 

 

 

 

SHOCK RESISTANT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MEMORY CONTROLLER

 

 

 

 

 

 

 

 

 

 

 

 

TX

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

58 AVSS

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSCI

 

CLOCK

 

EACH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSCO

17

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GENERATOR

BLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XTSL

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57

RFI

 

 

 

 

 

 

DIGITAL

 

SAMPLING

 

 

 

 

 

 

 

 

COMP

DIN0

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

56

BIAS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO

 

 

RATE

 

 

 

 

 

 

 

 

 

 

 

DIN1

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

AVDD

 

 

 

 

 

 

I/F

 

 

CONVERTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

54

ASYI

DOUT

21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

53 ASYO

DATAI

22

 

 

 

 

 

 

 

 

ATRAC

 

 

 

 

 

 

 

 

 

DRAM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LRCKI

23

 

 

 

 

 

 

 

ENCODER/DECODER

 

 

 

 

 

 

 

 

 

 

 

 

 

XBCKI

24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADDT

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

52 MVCI

 

 

 

 

 

 

 

 

 

 

ADDRESS/DATA BUS A00 - A11, D0 - D3

 

 

 

 

51

D3

 

26

27

28

29

30

31

32

33 34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

 

 

 

DADT

LRCK

XBCK

FS256

DVDD

A03

A02

A01 A00

A10

A04

A05

A06

A07

A08

A11

DVSS

XOE

XCAS

A09

XRAS

XWE

D1

D0

D2

 

 

66

Page 65 Page 67
Image 66
Page 65 Page 67
Contents Specifications 928-998-12SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Flexible Circuit Board Repairing AEP, UKHK, SP, MY, AR, AUS, KR, JE Diagrams Table of ContentsDisassembly Exploded ViewsSection Servicing Note Drawing OUT the Tray During Power OFFCleaning the Optical Pickup CD Player Removing the Indication Plate FLService Position the Power Board LED and Fluorescent Indicator Tube All Lit, Key Check Mode Cold ResetHot Reset Change-over of AM tuner Step between 9kHz and 10kHzAging Mode Error History Display ModeReading the Mechanism Error History Display Reading the BD Error History DisplayJIG for Checking BD MD Board Waveform IOPTEO Record Precedure REC/PLAY Checks Prior to Parts Replacement and AdjustmentsForced Reset Main Board Component SideRetry Cause Display Mode Tuning +/MD/CD/TUNING +Hexadecimal nBinary Conversion Table Section General Location of Parts and ControlsFront Panel Page Page Section Disassembly CaseFront Panel Back PanelMain Board and Power Transformer CD Mechanism DeckTRAY, Gear and CAM CD Base UnitOptical PICK-UP Section of CD KSS-213BA/F-NP BD CD BOARD, Spindle Motor M101 and Sled Motor M102 MD Mechanism DeckSet the shaft of Cam gear to Over Write Head Optical PICK-UP of MD KMS-260B/J1N Spindle Motor M901 and Sled Motor M902 MDSetting the Test Mode Section Test ModePrecautions for USE of Test Mode Exiting the Test ModeSelecting the Test Mode Display Contents Mark GroupMID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode OUTTest Mode Displays Functions of Other ButtonsMeanings of Other Displays Section Electrical Adjustments MD Section Parts Replacement and AdjustmentPrecautions for Adjustments Precautions for Checking Laser Diode EmissinonPrecautions for USE of Optical PICK- UP KMS-260B Creating Continuously Recorded DiscChecks Prior to Repairs Temperature Compensation Offset CheckLaser Power Check Specified ValueFocus 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 CheckFocus Bias Adjustment Press the ENTER/YES R button, display EFB =CD Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentCurve Check Adjusting Points and Connecting PointsCD Section RF Level CheckHCD-MD373 Section Diagrams Circuit Boards LocationBlock Diagrams BD CD Section HCD-MD373BD MD /2 RECD/A Converter Main Section BD CD SectionBD MD 2/2 Section Waveforms BD CD SectionBD MD 1/2 Section Main 3/3 SectionPrinted Wiring Board BD CD Section See page 40 for Circuit Boards LocationMain Board Schematic Diagram BD CD Section Printed Wiring Board BD MD Section Semiconductor LocationSchematic Diagram BD MD /2 MD Digital Board Schematic Diagram SP Section Printed Wiring Board SP Section Printed Wiring Board Main Section Schematic Diagram Main /3 See page 68 for IC Block DiagramsHCD-MD373 HCD-MD373 Schematic Diagram MD Digital Section See page 45 for Waveforms See page 67 for IC Block DiagramsPrinted Wiring Board MD Digital Section Schematic Diagram AMP Section Printed Wiring Board AMP Section Schematic Diagram Panel Section Printed Wiring Board Panel Section Schematic Diagram Power Section Printed Wiring Board Power Section AEP, UKExcept AEP, UK Voltage Selector Schematic Diagram Loading Section Schematic Diagram BD Switch SectionPrinted Wiring Board BD Switch Section Printed Wiring Board Loading SectionIC Block Diagrams BD MD Board 1/2 IC101 CXA2523ARIC152 BH6511FS-E2 BD MD Board 2/2 IC121 CXD2654RBD CD Board IC101 CXD2587Q C103 CXA2568M-T6 MD Digital BoardIC153 LB1830M-S-TE-L Main Board 3/3 IC171 LB1641 Main Board 1/3 IC302 MC14052BMain Board 2/3 IC301 M62428AFP IC931 M62016L IC101 Digital Signal Processor CXD2587Q Bdcd board IC PIN FunctionsAVSS0 RfdcAdio IgenIC101 RF Amplifier CXA2523AR Bdmd board MNT2 Xbusy MNT0 FOKMNT1 Shck MNT3 SlocRFI MvciAvdd AvssSpfd FS4Sprd FginIC501 Master Control M30620ECFP-A21 Main board Tuned CD-RESETStereo ST-CESection Exploded Views Case and Front Panel SectionChassis Section 59 #3MD Mechanism Deck MDM-5A 113 110 107125 126 106 105 MD Base Unit MBU-5A CD Mechanism Deck CDM55A-5SBD32 252 254 CD Base Unit BU-5SBD32255 256 257 253 254 258 251CD Mechanism Deck CDM55C-5BD32 352 354 CD Base Unit BU-5BD32355 356 357 353 354 358 351Section Electrical Parts List AMP AMP BD CD BD CD BD MD 2SJ278MYTR BD MD MD DigitalInductor Chip 2SK1764KYTR ResistorMD Digital Loading Main Main Terminal BOARD, Ground Ground TerminalEP1 EP2Description Remark R402 249-417-11 Panel BOARD, Complete Indicator TUBE, FluorescentPanel Jack LINE-INPanel Power PIN, Connector 7P Switch Voltage SelestorTRANSFORMER, SUB Power SWITCH, Push 1 KEYHardware List SCREW,PRECISION +PScrew +B Memo HCD-MD373 Revision History

HCD-MD373 specifications

The Sony HCD-MD373 is a compact mini audio system that offers an impressive blend of sound quality, versatility, and advanced technology, making it an ideal choice for audio enthusiasts and casual listeners alike. One of the standout features of the HCD-MD373 is its MiniDisc recorder/player, a legacy technology that allows users to record high-quality audio onto MiniDiscs, providing an alternative to traditional CDs and cassettes. This feature is particularly appealing for those looking to capture live music or create personalized playlists.

Another notable aspect of the HCD-MD373 is its integrated CD player, which supports a variety of formats including CD, CD-R, and CD-RW. This versatility means that users can enjoy their favorite albums without the hassle of switching devices. The audio system also includes a built-in AM/FM tuner, enabling users to easily tune into their favorite radio stations and enjoy live broadcasts.

The HCD-MD373 is equipped with a powerful amplifier that delivers impressive sound output, complemented by its two-way speaker system. The speakers provide a rich audio experience with clear highs and deep lows, making it suitable for various music genres, from classical to contemporary. The system also features a bass boost function that enhances low-frequency sounds, allowing for a more immersive listening experience.

In terms of connectivity, the HCD-MD373 offers multiple inputs and outputs, including audio line-in, headphone jacks, and a digital optical output. These features make it easy to connect external devices such as MP3 players, smartphones, or even home theater systems. Additionally, the audio system supports various playback options, including shuffle and repeat modes, providing enhanced flexibility for users.

The design of the HCD-MD373 is sleek and modern, with a compact form factor that allows it to fit seamlessly into any living space. Its user-friendly interface, complete with an LCD display, makes it easy to navigate and control playback settings. Overall, the Sony HCD-MD373 is a testament to Sony's commitment to quality audio experiences, combining innovative features, robust technology, and elegant design into a single, powerful audio system. Whether enjoying a quiet evening at home or hosting a gathering with friends, the HCD-MD373 is sure to deliver satisfying sound and performance.
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