SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAMS

MZ-E900

 

 

 

Iy

 

 

MAIN BOARD

RF AMP,FOCUS/TRACKING ERROR AMP

 

 

 

 

Ix

 

CN501

 

 

IC501

 

 

 

 

 

 

 

VREF

 

 

 

 

 

 

 

 

 

 

 

6

4

VREF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Jx

 

9

Iy

8

Iy

 

 

RF OUT

 

 

 

 

 

 

Ix

Ix

 

 

33

 

 

 

 

 

10

9

 

 

PEAK

 

 

 

 

 

Jx

Jx

 

 

29

 

 

 

 

 

14

10

 

PEAK

 

 

 

Jy

 

RF AMP,

BOTM

 

 

 

 

Jy

Jy

Jx

Jy

Jx

 

/BOTM

28

 

 

15

A

11

A

FOCUS

 

 

 

 

 

 

 

 

16

12

ERROR,

 

ABCD

 

 

 

 

A

 

B

B

 

41

 

 

 

 

17

14

TRACKING

FE

Ix

Iy

Ix

 

 

7

C

5

C

ERROR

 

42

 

 

D

D

 

 

TE

 

 

 

B

 

8

6

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-C

 

 

 

a b c

d

 

 

 

 

13

TPP/WPP

ADIP IN

44

 

 

 

 

D-C

ADIP

21

C

 

 

 

7

 

 

 

 

 

 

 

 

 

 

F

 

 

 

18

MON

18

PD-I

APC

 

PD-NI

19

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

VC

31

 

 

 

 

 

 

VIF

 

 

 

 

 

 

 

PD

 

 

 

 

 

 

 

OFTRK

26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22 DVDD

 

 

XRST

 

 

 

 

 

 

 

 

40

AVCC

 

 

25

 

 

 

 

 

 

 

 

 

 

SERIAL

SBUS

23

 

 

 

 

 

 

 

 

 

 

I/F

SCK

24

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LASER

 

 

 

S-MONITOR

S MON

43

 

 

 

 

LD-A

 

 

PD-O

 

 

 

 

 

 

12

AUTO POWER

20

 

 

 

 

 

 

 

LD

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

Q501

 

 

 

 

 

 

 

 

 

 

 

13

 

 

 

 

 

 

 

 

 

 

LD-K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S0

S0

11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S1

S1

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AVCC

 

 

 

 

 

 

 

 

 

AVCC

AVCC

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FOCUS/TRACKING COIL DRIVE,

 

 

 

 

 

 

 

 

 

 

SPINDLES/SLED MOTOR DRIVE

 

 

 

 

MINIDISC

 

 

 

 

 

 

IC551

 

 

 

 

OPTICAL PICK-UP BLOCK

 

 

 

 

 

 

 

 

 

 

 

 

(LCX-4E)

 

 

 

42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

38

 

 

 

 

 

 

 

41

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

37

 

 

 

 

 

 

 

39

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

37

RFI

44

PEAK

45

BOTM

46

ABCD

47

FE

56

TE

74

ADFG

78

APCREF

49

VC

12

VREF MON

217 OFTRK

221 XRF RST

160

SSB DATA

161

SSB CLK

9

S MON

194 PD S0

195 PDS1

EEPROM

 

IC801

 

DI DO SK XCS

 

4 3 2 1

 

219 XCS NV

181 SCK0

180 S00

179 SI0

100 SLD1MON

101 SLD2MON

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO SIGNAL PROCESSOR,

EFM/ACIRC ENCODER/DECODER,

SHOCK PROOF MEMORY CONTROLLER, 16M BIT D-RAM, SYSTEM CONTROL

IC601

 

AUDIO BOARD

(1/2)

 

 

 

 

 

HEADPHONE AMP

 

 

 

 

 

IC301

 

RCH

 

 

 

 

 

 

AOUT L

29

22

 

 

2

LCH

 

 

J301

 

 

 

 

 

 

 

RCH

 

 

 

 

i

 

 

 

 

 

 

AOUT R

30

21

IN B

OUT B

4

RCH

 

UNREG

 

+B

 

 

RGND

 

1

BEEP OUT A

24

KEY

 

VIF

20

VCC

BEEP OUT B

DATA

 

23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VC

BEEP

183

15

 

BEEP

 

REFERENCE

XHP STB

240

18

STB

VREF IN 13

VOLTAGE

SWITCHING

MUTE 218

17

MUTE

 

 

 

 

Q301

 

 

 

 

 

 

RMC DTCK 142

VC

REC KEY 18

AUDIO BOARD

SW BOARD

 

 

 

 

 

SET KEY2 14

(2/2)

 

 

S808

 

S807

 

TSB MST VDD 141

 

 

 

AVLS

 

 

 

 

 

D801

HOLD

 

LIMIT

NORM

ORP LED

159

 

 

OFF

ON

 

 

OPR

 

 

 

 

 

 

 

 

 

 

 

 

HOLD SW 227

 

 

 

 

 

 

 

 

XAVLS 224

 

 

 

 

 

 

 

 

SET KEY 1

13

 

 

 

 

 

 

 

 

WK DET

17

 

 

 

 

 

 

 

 

HALF LOCK SW

19

 

S809

 

 

 

 

 

 

 

VIF

 

 

 

 

 

 

 

 

 

 

(OPEN/CLOSE)

S805

S804

S803

S802

 

S801

DIFVDD0

76

 

 

VOLUME

VOLUME

. >N

x

DIFVDD1

183

 

 

+

--

 

 

 

 

 

 

 

 

 

 

 

 

TSB SLV VDD 143

 

 

 

 

 

 

 

 

MIFVDD0 154

 

 

 

 

 

 

 

 

MIFVDD1 176

 

 

 

 

 

 

 

 

MIFVDD2 196

 

 

 

 

 

 

 

 

 

VLD

POWER SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

TRK+

33

 

 

 

 

 

 

PRE

 

 

TRACKING

 

 

 

32

HI-BRIDGE

24

 

 

 

DRIVER

COIL

 

 

 

 

CONTROL

25

 

 

TRK-

 

 

 

 

1

35

 

 

 

 

 

 

 

 

 

 

 

 

FCS+

 

 

 

BIAS

 

 

4

 

 

 

 

 

 

 

 

 

 

 

FOCUS

 

 

 

10

 

 

 

COIL

 

 

FCS-

 

 

 

 

3

7

 

HI-BRIDGE

19

 

 

PRE

 

 

 

 

 

 

 

 

DRIVER

CONTROL

18

MINIDISC

 

 

 

8

 

 

 

 

 

 

 

 

 

 

MECHANISM BLOCK

 

 

 

 

 

 

 

M902

 

 

CN551

 

 

 

 

(SLED)

SLED1+

4

 

14

PRE

HI-BRIDGE

16

 

 

 

 

15

17

 

SLED1-

 

 

DRIVER

CONTROL

 

2

 

12

20

 

 

 

 

 

SLED2+

3

 

29

PRE

HI-BRIDGE

26

 

SLED2-

1

 

31

 

 

 

DRIVER

CONTROL

27

 

 

8

 

54

 

 

1

 

 

 

 

51

 

 

 

 

 

 

 

 

 

 

 

 

 

52

 

 

56

 

 

 

 

 

 

 

M901

 

 

 

53

 

 

55

 

 

 

 

 

 

(SPINDLE)

 

 

 

 

 

 

 

 

CLVU

7

 

48

 

 

 

 

 

 

 

 

2

 

 

 

 

45

 

 

 

CLVV

 

 

PRE

3 PHASE

3

 

6

 

46

 

 

 

DRIVER

CONTROL

4

 

CLVW

 

 

49

 

 

5

 

5

 

44

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

UNREG

 

 

 

81

TFDR

88

TRDR

3

XTEST

TAP601

 

(TEST)

 

82

FFDR

83

FRDR

98

SLDV

96

SRDR

97

SFDR

99

SLDW

102

SLCW

 

XCS NV

93

SI0

SPCU

 

SCK0

94

SPCV

 

S00

95

SPCW

98

SPD W

89

SPD V

87

SPD U

88

SPDL PWM

220

XRST MTR DRV

TSB SLV CHK 210

MIFVDD3 241

OSCI 24

X601

45.1584MHz

OSCO 25

RMC KEY 20

VB MON 10 UNREG

VC PWM 165

VL PWM 164

FS4 86

VLON 234

SLEEP 235

FFCLR 236

XRST 8

AVDD 21

AVDD

AVD1 23

AVD2 119

VDI00 139

VDI01 151

VDI02 231 DVDD VDI03 6

VDD RAM 59

VDD RAM 146 MNT3 73 SWDT 84 SCLK 91 XLAT 113 SRDT 153 SENS 222

DVDD

IC901

 

VL

 

 

 

44

VD

VLD

10

VC

 

 

 

 

5

XWK4

VCO

35

 

2

XWK1

VIF

 

 

7

VRMC

VIF

42

AVDD

4

XWK3

 

 

 

41

 

6

VSTB

VA

 

3

XWK2

VG

19

VG

26

INM1

 

 

D903

LG

18

 

27

RF1

 

23

RF2

 

 

 

22

INM2

VL

9

56

CLK

VL

11

1

VLON

L2

D902

55

SLEEP

16

L2

12

54

FFCLR

 

UNREG

46

XRST

 

VB

50

36

VC

 

 

34

VC

L1

32

45

VC2

L1

28

 

 

 

D901

 

 

VC OUT

33

RECHAGEABLE

BATTERY

NH-14WM

1PC, 1.2V 1400mAh

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

1PC, 1.5V

Signal path. F : Analog J : Digital

15 15

Page 15
Image 15
Sony MZ-E900 specifications Section, Block Diagrams

MZ-E900 specifications

The Sony MZ-E900, released in the early 2000s, represents a remarkable convergence of portable music technology and user-friendly design. As a MiniDisc player, the MZ-E900 was part of Sony's efforts to create a new standard in digital audio storage, allowing users to record, erase, and edit audio with unparalleled ease.

One of the standout features of the MZ-E900 is its compact and lightweight design, making it an ideal companion for music lovers on the go. Weighing in at approximately 150 grams, it is particularly portable and can easily fit into a pocket or bag. The sleek exterior is both stylish and functional, with an intuitive interface that facilitates easy navigation through a user-friendly menu.

Technologically, the MZ-E900 was equipped with Sony's ATRAC (Adaptive Transform Acoustic Coding) audio compression technology, which delivered impressive sound quality while minimizing file sizes. This allowed users to fit more music onto a single MiniDisc, which could hold up to 80 minutes of high-quality audio in LP2 mode. Additionally, the player supported 24-bit digital-to-analog conversion, ensuring a rich and detailed listening experience.

Another notable feature is the MZ-E900's ability to record audio directly from various sources, such as FM radio or external devices, thanks to an integrated microphone and line-in capabilities. The unit also supported a range of playback modes, including shuffle and repeat functions, giving users greater flexibility in how they enjoy their music.

The MZ-E900 also boasted an impressive battery life, with the ability to play up to 40 hours on a single AA battery, making it perfect for long journeys or extended listening sessions. The inclusion of an ergonomic remote control further enhanced the user experience, allowing for convenient operation while on the move.

In terms of connectivity, the device included a small but versatile digital output, enabling users to connect to other audio equipment such as amplifiers or sound systems. This feature contributed to the versatility of the MZ-E900, allowing it to serve not just as a portable player, but as a component in a larger audio setup.

Overall, the Sony MZ-E900 stood out for its combination of portability, sound quality, and innovative features, making it a beloved device among audiophiles and casual listeners alike during its time. Its legacy remains a testament to Sony's commitment to advancing portable audio technology.