Sony NHF800 service manual Electrical Adjustments, Temp, 131 ###S, PwrAdj

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MZ-NH700/NHF800

 

Ver 1.1

SECTION 5

 

ELECTRICAL ADJUSTMENTS

1.PRECAUTIONS FOR ADJUSTMENT

1.Adjustment must be done in the test mode only. After adjusting, release the test mode. A key having no particular description in the text, indicates a set key.

2.Use the following tools and measuring instruments.

Digital voltmeter

Regulated dc power supply (two sets)

Thermometer (using the Temperature Correction)

Laser power meter

CD adjustment disc TDYS-1 (Part No. : 4-963-646-01)

MD1/HiMD1 hybrid adjustment disc MDW-74/GA1 (Part No. : 4-229-747-01)

Hi-MD3 adjustment disc HMD1GSDJ (Part No. : 7-819-098-37) *1

Remote commander in accessories (with LCD)

AC adapter in accessories

Ni-MH rechargeable battery (NH-7WMAA) in accessories (full charged)

PC application software for test mode

“TestMode_Enter_For_900_800_700_600_600D_Ver***.exe” *2

USB cable

*1) Hi-MD3 adjustment disc (HMD1GSDJ) is consumable. Therefore if it is used 400 times, exchange it for a new.

*2) Use the newest version every time.

Copy the whole folder of this program to your PC. Operating system: Windows 2000, Windows XP

When using this application, the SonicStage Ver. 2.0 or 2.1 is necessary, and install it in your PC in advance.

3.Unless specified otherwise, supply DC 1.5 V from battery terminals (CL431: BATT+, CL432: BATT–).

2.ADJUSTMENT SEQUENCE

Adjustment must be done with the following order.

Adjustment order:

1.Entering the test mode

2.Initialize the adjustment value

3.Setting the temperature correction value

4.Power supply voltage adjustment

5.Charge function check

6.Laser power check

7.Setting the adjustment values

8.Servo Overall adjustment

9.Resume clear

10.Releasing the test mode

3.ADJUSTMENT OF THE EACH ITEM 3-1. Entering The Test Mode

Refer to the “SECTION 4. TEST MODE”.

3-3. Setting The Temperature Correction Value

Procedure:

1.In the test mode (Display Check mode), press the [VOL+] key to enter the Manual mode.

2.Press the > key twice, and press the [VOL+] key twice to

display as follows.

Display

130 Temp

3.Press the > key once to select the item number 0131 and display as follows.

Display

131

###S**

adjustment value (hexadecimal)

4.Measure the ambient temperature.

5.Adjust with [VOL+]/[VOL--]keys so that the adjusted value

(hexadecimal value) becomes the ambient temperature. (example: 25 °C = 19h)

6.Press the X key to write the adjusted value.

7.Press the x key four times and back to the Display Check mode.

3-4. Power Supply Voltage Adjustment

Adjustment must be done with the following order.

3-4-1. Setting

Procedure:

1.Enter the test mode (Display Check mode), and make sure that the power supply voltage is 1.2 V.

2.Press the [VOL+] key to enter the Manual mode.

3.Press the [VOL+] key twice to display as follows.

Display

2

POWER

4.Press the > key once, press the [VOL+] key once, and press the > key once again to display as follows.

Display

3-2. Initialize The Adjustment Value

Procedure:

1.In the test mode (Display Check mode), press the [VOL--]key to enter the Overall adjustment mode.

2.Press the [T MARK] key and display “911 ResOK?”.

3.Press the X key to display “911 Reset!” and initialize the adjustment values.

4.Press the x key and back to Display Check mode.

210 PwrAdj

5.Repeat the next procedures (3-4-2. PwrAdj Adjustments), and adjust all contents of “table 3-4-1. PwrAdj Specifications”.

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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.