Sony NHF800 service manual Section Diagrams, Block Diagram MD Servo Section

Page 21

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – MD SERVO Section –

MZ-NH700/NHF800

OVER WRITE HEAD DRIVE

IC601 (1/2)

VREF

IY

IX

JX

JY

A

B

C

D

F

IIN

 

 

 

 

HR601

 

 

OVER WRITE

 

 

 

 

 

OVER

 

 

 

 

 

 

 

 

 

HEAD DRIVE

 

 

 

 

 

WRITE

 

 

 

 

 

 

 

 

 

Q601, 602

 

 

 

 

 

HEAD

 

 

 

 

 

 

 

 

 

 

 

RF AMP, FOCUS/TRACKING ERROR AMP

 

 

 

M703

 

 

 

 

OVER WRITE

M

 

IC501

 

 

 

 

 

 

 

 

 

 

 

HEAD

 

 

 

 

 

 

 

7

VREF10

ADIP_IN

39

 

 

 

UP/DOWN

 

 

 

 

 

 

11

RF_IY

NPPO

43

 

 

 

 

 

 

 

 

 

 

 

 

10

RF_IX

 

 

 

 

 

 

 

13

RF_JX

 

 

 

 

 

 

 

12

RF_JY

 

 

 

145

VIN

 

 

56

IY

RFO

8

RF BUFFER

101

RFI

TO IC801 (2/3)

 

1

IX

 

 

 

Q504

 

 

(AUDIO SECTION)

54

JX

ABCD

40

 

 

 

 

 

55

JY

 

108

ABCD

 

 

50

A

FE

41

 

109

FE

 

 

51

B

TE

42

 

114

TE

 

 

52

C

 

 

 

ADFG

23

 

153

ADFG

 

 

49

D

 

 

 

PD-NI

 

 

 

 

 

 

15

A_C

19

 

142 APCREF_DA

 

CLK

26

 

174

FS256_OUT

 

14

D_C

 

 

OFTRK

45

 

180

OFTRK

 

 

 

 

 

 

 

20

PD_BUF

VC

 

 

123

VREF_MON

 

 

18

PD_I

38

 

 

 

VREF09

9

 

110

VC

 

 

17

PDO_SOURCE

 

 

 

PEAK

48

 

106

PEAK

 

 

 

 

 

 

 

 

 

BOTM

47

 

107

BOTM

 

 

77 HB

CLK

60

 

69HBB

78

HA

EFM 62

70

HAB

EFM_CLK

63

 

 

84

OUTA

LATCH

56

 

 

82

OUTB

 

 

245 175

182

158

XCS REC DRV CHOPPERCLK

EFMO

FS4

SYSTEM CONTROLLER,

DIGITAL SIGNAL PROCESSOR

IC801 (1/3)

CLK

A (Page 23)

OPTICAL PICK-UP BLOCK (ABX-U)

S0

S1

PLSE_XDC

CONT

TRK+

TRK–

FCS+

FCS–

MVCC

PVCC

VCC

L1

L2

SBUS

33

 

251

SSB_DATA

SCK

32

 

252

SSB_CLK

S-MON

21

 

113

SE

XRESET

35

 

225

XRF_RST

 

 

 

209

PF1/S0DO

 

 

 

210

PF2/S1DO

 

 

 

254

LDPEN

 

 

 

272

XLSRCK

TRK+

 

 

 

 

TRK–

 

 

 

 

FCS+

 

 

 

 

FCS–

 

 

 

U

 

M702

W

 

V

 

(SLED)

 

 

 

 

 

MDVCC

REG2 B+

REG3 B+

L1 B+

L2 B+

U

M701

W

V

(SPINDLE)

 

 

 

 

 

FOCUS/TRACKING

 

 

 

 

 

 

COIL DRIVE,

 

 

 

 

 

 

 

SPINDLE/SLED

 

 

 

 

 

 

 

MOTOR DRIVE

 

 

 

 

 

 

 

IC701

 

 

 

 

TRK+

32, 33

FO2

FI2 30

155

TFDR

TRK–

35, 36

RO2

RI2 29

154

TRDR

 

FCS+

16, 17

FO1

FI1 19

156

FFDR

FCS–

13, 14

RO1

RI1 20

157

FRDR

 

 

39, 40

UO2

 

 

216

SLD_MON

 

UI2 50

172

SRDR

 

27

CPUI2

 

VI2

49

167

SLDV

 

42, 43

VO2

 

WI2 48

168

SLDW

 

26

CPVI2

 

 

 

 

 

 

46

WO2

 

PWM2 51

159

SFDR

 

25

CPWI2

ST2 45

289

HI_Z_SLO

 

28

COM2

 

9, 10

UO1

 

 

232

SPDL_MON

 

UI1 63

160

SPRD

 

22

CPUI1

 

VI1

64

162

SPDV

 

6, 7

VO1

 

WI1

1

163

SPDW

 

23

CPVI1

PWM1 62

161

SPFD

 

3

WO1

 

 

 

 

 

 

 

 

24

CPWI1

ST1

4

290

HI_Z_SPDL

 

21

COM1

 

 

 

 

 

 

 

 

STALL 55

238

XRST_MTR_DRV

SLCU 169 SLCV 170 SLCW 171

SPCU 164 SPCV 165 SPCW 166

SLD MON U SLD MON V SLD MON W

CLV MON U CLV MON V CLV MON W

SIGNAL PATH

: PLAYBACK

: REC

CPWO2

CPVO2

CPUO2

CPWO1

CPVO1

CPUO1

54 53 52

59 60 61

SLD MON W

SLD MON V

SLD MON U

CLV MON W

CLV MON V

CLV MON U

MZ-NH700/NHF800

21 21

Image 21
Contents Model Name Using Similar Mechanism SpecificationsMD Mechanism Type MT-MZNH900-181 Optical Pick-up Name On nextMZ-NH700/NHF800 Flexible Circuit Board RepairingDisassembly Table of ContentsDiagrams GeneralUnleaded Solder Section Servicing NotesDisplay window MARK/REC +N button Jog dial Way control key Section GeneralDisassembly Disassembly FlowSection Main Board Case Lower SectionMechanism Deck Section MT-MZNH900-181, MD Standard PIN Case Upper SectionGear BSA, Gear SB SET Chassis AssyOP Service Assy Position of Ferrite Core Holder AssyTest Mode 00# VerOutline Manual 00#AdjF 0000OfsRun CD Run000 OPChkN1#### ####N2#### $$$$$$ ##Temp Electrical Adjustments131 ###S PwrAdjPwrAdj adjustments ItemNo Display Specification value Measuring point211 AD VBsAdj VBsAdj adjustments261 AD Charge Function Check111 ###S DiscPr113 ###S Servo Overall Adjustment Releasing The Test ModeResume Clear Block Diagram MD Servo Section Section DiagramsMIC Block Diagram Audio SectionCLK a Block Diagram Power Supply SectionConductor Side Pattern face are indicated Parts face side Lead layout of conventional ICAbbreviation EE East European model 2FO Schematic Diagram Main /9 See page 36 for IC Block DiagramGND Schematic Diagram Main /9 See page 36 for IC Block DiagramsCSPChip Size Package CTL2ICHG XRST2 Mute 30 Sgnd Lrck Xbck Xcsadc Poenclosesw Schematic Diagram Main /9TOU NDG Printed Wiring Board Main /2 Semiconductor LocationUses unleaded solder IC601 60 IC301 AK5356VN-L IC Block DiagramsIC601 SC901585VAR2 IC602 R1160N121B-TR-FA HN58X2564FPIEZ IC Pin Function Description DVDD25LPF DavddDavss OscvddFilo FiliCltv DvregoVrefr VreflDclsoutr DclsoutlSI0 AccessledSO0 SCK0Xcsnv DRVPWM GndswHizsld SCS4Hizspdl SETCODE3Section Exploded Views 311Ref. No Description 2023-317-1 NH7002023-318-1 NHF800 US109 117 Chassis Section110 111 124 125Ref. No Description Remark 160 3-263-453-01 PLATE, Ratchet Mechanism Deck Section MT-MZNH900-181M702 M703Section Electrical Parts List Main 1uF 10% 10V C416 125-777-11 C415 125-777-111uF 10% 10V C419 125-777-11 1uF 10% 10V C420 125-777-111uF 10% C671 125-777-11 C669 125-837-111uF 10% 10V C672 127-820-11 7uF 10% 16V C673 125-777-11NNCD6.8H-T1 D303 8-719-056-54 Diode MAZS068008SOMA22D2800LS0 MA8056-L47uH L608 400-402-21 L607 419-881-117uH L701 216-295-00 L702 216-295-00R309 RES-CHIP 16W R310 R312 R314 218-990-11 R305 RES-CHIP 100 16W R306 10K R307 R308 216-864-11R315 218-990-11 R433 245-455-21R650 216-793-11 R649 245-456-21R652 218-990-11 R653 RES-CHIP 22K 16W R654 R657 218-990-11Ref. No Description Remark R918 218-985-11 S894 SWITCH, Push 2 KEY470K 16W R920 218-985-11 470K 16W R922 218-977-11503 501 502504 506 504Revision History

NHF800 specifications

The Sony NHF800 is a remarkable addition to Sony's range of high-fidelity audio devices, designed to elevate the listening experience for audiophiles and casual listeners alike. Blending cutting-edge technology with user-friendly features, the NHF800 stands out as a versatile and powerful audio solution.

At the heart of the NHF800 is its advanced audio circuitry, which employs high-resolution audio technology. This ensures that music playback is not only accurate but also retains the depth and richness of the original recordings. Supporting various audio formats, including DSD, PCM, and even compressed formats, this device caters to diverse musical tastes while maintaining superior sound quality.

One of the standout features of the Sony NHF800 is its compatibility with both wired and wireless connections. With Bluetooth capabilities, users can stream music effortlessly from smartphones, tablets, or computers, while the high-resolution audio ensures that streamed content does not compromise on quality. Additionally, the device is equipped with Wi-Fi support, allowing for easy access to streaming services and internet radio, further broadening the audio horizons for users.

The NHF800 also boasts a built-in DAC (Digital-to-Analog Converter) that promotes enhanced audio performance. This DAC converts digital signals into analog with precision, resulting in a cleaner, more detailed sound output. The device supports a wide dynamic range, allowing listeners to experience their music as intended by the artists.

Moreover, the NHF800 features an intuitive user interface that simplifies navigation through music libraries and settings. The color display provides clear visuals, making it easy to browse albums, playlists, and streaming options. The device's ergonomic design ensures that it is not only visually appealing but also comfortable to use, whether at home or on the go.

Further enhancing the listening experience, the device incorporates noise-canceling technologies, allowing users to enjoy their music without external interruptions. This feature is particularly beneficial for users in noisy environments, such as public transport or busy urban settings.

In summary, the Sony NHF800 is a well-rounded high-fidelity audio device that merges advanced technology with usability. Its high-resolution audio capability, extensive connectivity options, and user-friendly design make it an excellent choice for anyone looking to elevate their listening experience. Whether at home or out and about, the NHF800 ensures that every note resonates with clarity and detail, making music come alive like never before.