Sony NHF800 service manual Section Servicing Notes, Unleaded Solder

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MZ-NH700/NHF800

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts.

The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

Unleaded solder melts at a temperature about 40 °C higher than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to about 350 °C.

Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful!

Strong viscosity

Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

Providing the required system environment

System requirements

The following system environment is required in order to use the SonicStage/MD Simple Burner software for the MD Walkman.

Computer

IBM PC/AT or Compatible

 

 

 

CPU: Pentium II 400 MHz or higher (Pentium III 450 MHz or higher

 

is recommended.)

 

Hard disk drive space: 200 MB or more (1.5 GB or more is

 

recommended) (The amount space will vary according to Windows

 

version and the number of music files stored on the hard disk.)

 

RAM: 64 MB or more (128 MB or more is recommended)

 

 

 

Others

 

CD drive (capable of digital playback by WDM)

 

Sound Board

 

USB port (supports USB (previously USB 1.1))

 

 

Operating

Factory installed:

System

Windows XP Media Center Edition 2004/Windows XP Media Center

 

Edition/Windows XP Professional/Windows XP Home Edition/

 

Windows 2000 Professional/Windows Millennium Edition/Windows

 

98 Second Edition

 

 

Display

High Color (16bit) or higher, 800 600 dots or better (1024 768 dots

 

or better is recommended)

 

 

Others

Internet access: for Web registration, EMD services and CDDB

 

Windows Media Player (version 7.0 or higher) installed for playing

 

WMA files

 

 

This software is not supported by the following environments:

OSs other than the indicated above

Personally constructed PCs or operating systems

An environment that is an upgrade of the original manufacturer-installed operating system

Multi-boot environment

Multi-monitor environment

Macintosh

Notes

We do not ensure trouble-free operation on all computers that satisfy the system requirements.

The NTFS format of Windows XP/Windows 2000 Professional can be used only with the standard (factory) settings.

We do not ensure trouble-free operation of the system suspend, sleep, or hibernation function on all computers.

For Windows 2000 Professional users, install Service Pack 3 or later version before using the software.

OPERATION CHECK WHEN THE LID IS OPEN

In making an operation check with the MAIN Board removed from the set, short the SL894 (OPEN/CLOSE) of the MAIN Board with the solder before starting the operation check.

Note: Be sure to remove the solder used for shortcircuit after the repaire completed.

– MAIN Board (Conductor Side) –

SL894

(OPEN/CLOSE)

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Contents Specifications Model Name Using Similar MechanismMD Mechanism Type MT-MZNH900-181 Optical Pick-up Name On nextFlexible Circuit Board Repairing MZ-NH700/NHF800Table of Contents DisassemblyDiagrams GeneralSection Servicing Notes Unleaded SolderSection General Display window MARK/REC +N button Jog dial Way control keyDisassembly Flow DisassemblySection Case Lower Section Main BoardCase Upper Section Mechanism Deck Section MT-MZNH900-181, MD Standard PINSET Chassis Assy Gear BSA, Gear SBOP Service Assy Holder Assy Position of Ferrite Core00# Ver Test ModeOutline 00# ManualAdjF 0000CD Run OfsRun000 OPChk#### N1####N2#### $$$$$$ ##Electrical Adjustments Temp131 ###S PwrAdjItemNo Display Specification value Measuring point PwrAdj adjustments211 AD VBsAdj adjustments VBsAdj261 AD Charge Function CheckDiscPr 111 ###S113 ###S Releasing The Test Mode Servo Overall AdjustmentResume Clear Section Diagrams Block Diagram MD Servo SectionBlock Diagram Audio Section MICBlock Diagram Power Supply Section CLK aLead layout of conventional IC Conductor Side Pattern face are indicated Parts face sideAbbreviation EE East European model Schematic Diagram Main /9 See page 36 for IC Block Diagram 2FOSchematic Diagram Main /9 See page 36 for IC Block Diagrams GNDCSPChip Size Package CTL2ICHG XRST2 Mute 30 Sgnd Schematic Diagram Main /9 Lrck Xbck Xcsadc PoencloseswTOU NDG Semiconductor Location Printed Wiring Board Main /2Uses unleaded solder IC601 60 IC Block Diagrams IC301 AK5356VN-LIC601 SC901585VAR2 IC602 R1160N121B-TR-FA HN58X2564FPIEZ IC Pin Function Description Davdd DVDD25LPFDavss OscvddFili FiloCltv DvregoVrefl VrefrDclsoutr DclsoutlAccessled SI0SO0 SCK0DRV XcsnvPWM GndswSCS4 HizsldHizspdl SETCODE3311 Section Exploded ViewsRef. No Description NH700 2023-317-12023-318-1 NHF800 USChassis Section 109 117110 111 124 125Mechanism Deck Section MT-MZNH900-181 Ref. No Description Remark 160 3-263-453-01 PLATE, RatchetM702 M703Section Electrical Parts List Main C415 125-777-11 1uF 10% 10V C416 125-777-111uF 10% 10V C419 125-777-11 1uF 10% 10V C420 125-777-11C669 125-837-11 1uF 10% C671 125-777-111uF 10% 10V C672 127-820-11 7uF 10% 16V C673 125-777-11D303 8-719-056-54 Diode MAZS068008SO NNCD6.8H-T1MA22D2800LS0 MA8056-LL607 419-881-11 47uH L608 400-402-217uH L701 216-295-00 L702 216-295-00R305 RES-CHIP 100 16W R306 10K R307 R308 216-864-11 R309 RES-CHIP 16W R310 R312 R314 218-990-11R315 218-990-11 R433 245-455-21R649 245-456-21 R650 216-793-11R652 218-990-11 R653 RES-CHIP 22K 16W R654 R657 218-990-11S894 SWITCH, Push 2 KEY Ref. No Description Remark R918 218-985-11470K 16W R920 218-985-11 470K 16W R922 218-977-11501 502 503504 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.