Sony NHF800 service manual CD Run, OfsRun, 000, OPChk, $$####

Page 14

MZ-NH700/NHF800

Ver 1.1

6. OVERALL ADJUSTMENT MODE

6-1. Operation of The Overall Adjustment Mode

1.Enter the test mode (Display Check mode).

2.Press the [VOL--]key to activate the Overall Adjustment mode where the LCD displays as shown below.

Display

0

AdjF**

Disc mark:

Lit the inner segments: Completed the power supply adjustment.

Lit the outer segments: Completed the charge function check.

**”:

If “DF” or “FF” is displayed, it mean that completed the servo overall adjustment.

3.To quit the Overall Adjustment mode, press the x key and return to the Display Check mode.

Flow of overall adjustment mode:

Overall Adjustment Mode

0

AdjF**

CD Overall Adjustment Mode

 

. key

***

 

 

 

CD Run

 

 

xkey

MD1 Overall Adjustment Mode

 

> key

***

 

 

 

MD1Run

 

 

xkey

Hi-MD3 Overall Adjustment Mode

 

[VOL +] key

***

 

 

 

HM3Run

 

 

xkey

Stray Light Offset Overall

Adjustment Mode

 

[VOL --] key

***

 

 

 

OfsRun

 

 

xkey

Optical Pick-up Operation

Check Mode

 

[GROUP] key

000

 

 

 

OPChk

 

 

xkey

 

[T MARK] key

 

Initialize The Adjustment Values

 

or [REC] switch

911

 

 

 

 

ResOK?

 

 

xkey

(rotation)

6-2. Error Message in The Overall Adjustment Mode

In the Overall Adjustment mode, if an error occurred, it displays as following table.

Display

Description

 

 

Close!

Dose not close the lid

 

 

DfDis!

Unsuitableness disc was inserted

 

 

NoChg!

Does not finish the charge function check

 

 

NoTmp!

Does not setting the temperature correction value

 

 

NotCD!

Does not complete the CD Overall adjustment beforethe

 

MD1 Overall adjustment

 

 

NotM1!

Does not complete the MD1 Overall adjustment

 

before the Hi-MD3 Overall adjustment

 

 

NotH3!

Does not complete the Hi-MD3 Overall adjustment

 

before the Stray Light Offset Overall adjustment

 

 

****NG

Error of item number “****

7. SELF-DIAGNOSIS RESULT DISPLAY MODE

This set uses the self-diagnostic function system in which if an error occurred during the recording or playing, the mechanism control block and the power supply control block in the microcomputer detect it and record its cause as history in the nonvolatile memory. By checking this history in the test mode, you can analyze a fault and determine its location.

Total recording time is recorded as a guideline of how long the optical pick-up has been used, and by comparing it with the total recording time at the time when an error occurred in the self- diagnosis result display mode, you can determine when the error occurred.

Clear the total recording time, if the optical pick-up was replaced.

7-1. Operation of The Self-Diagnosis Result Display Mode

1.Enter the test mode (Display Check mode).

2.Press the > key to activate the Self-Diagnosis Result Display mode where the LCD displays as shown below.

Display

***

$$####

***” : Error code

$$” : Error history code

###” : Total recording time

3.To quit the Self-Diagnosis Result Display mode, press the x key and return to the Display Check mode.

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Contents MD Mechanism Type MT-MZNH900-181 Optical Pick-up Name SpecificationsModel Name Using Similar Mechanism On nextFlexible Circuit Board Repairing MZ-NH700/NHF800Diagrams Table of ContentsDisassembly GeneralSection Servicing Notes Unleaded SolderSection General Display window MARK/REC +N button Jog dial Way control keySection DisassemblyDisassembly Flow 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 CoreOutline Test Mode00# Ver AdjF 00#Manual 0000000 CD RunOfsRun OPChkN2#### ####N1#### $$$$$$ ##131 ###S Electrical AdjustmentsTemp PwrAdj211 AD PwrAdj adjustmentsItemNo Display Specification value Measuring point 261 AD VBsAdj adjustmentsVBsAdj Charge Function Check113 ###S 111 ###SDiscPr Resume Clear Servo Overall AdjustmentReleasing The Test Mode Section Diagrams Block Diagram MD Servo SectionBlock Diagram Audio Section MICBlock Diagram Power Supply Section CLK aAbbreviation EE East European model Conductor Side Pattern face are indicated Parts face sideLead layout of conventional IC 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 Uses unleaded solder Printed Wiring Board Main /2Semiconductor Location IC601 60 IC Block Diagrams IC301 AK5356VN-LIC601 SC901585VAR2 IC602 R1160N121B-TR-FA HN58X2564FPIEZ IC Pin Function Description Davss DavddDVDD25LPF OscvddCltv FiliFilo DvregoDclsoutr VreflVrefr DclsoutlSO0 AccessledSI0 SCK0PWM DRVXcsnv GndswHizspdl SCS4Hizsld SETCODE3Ref. No Description Section Exploded Views311 2023-318-1 NH7002023-317-1 NHF800 US110 Chassis Section109 117 111 124 125M702 Mechanism Deck Section MT-MZNH900-181Ref. No Description Remark 160 3-263-453-01 PLATE, Ratchet M703Section Electrical Parts List Main 1uF 10% 10V C419 125-777-11 C415 125-777-111uF 10% 10V C416 125-777-11 1uF 10% 10V C420 125-777-111uF 10% 10V C672 127-820-11 C669 125-837-111uF 10% C671 125-777-11 7uF 10% 16V C673 125-777-11MA22D2800LS0 D303 8-719-056-54 Diode MAZS068008SONNCD6.8H-T1 MA8056-L7uH L701 216-295-00 L607 419-881-1147uH L608 400-402-21 L702 216-295-00R315 218-990-11 R305 RES-CHIP 100 16W R306 10K R307 R308 216-864-11R309 RES-CHIP 16W R310 R312 R314 218-990-11 R433 245-455-21R652 218-990-11 R649 245-456-21R650 216-793-11 R653 RES-CHIP 22K 16W R654 R657 218-990-11470K 16W R920 218-985-11 S894 SWITCH, Push 2 KEYRef. No Description Remark R918 218-985-11 470K 16W R922 218-977-11504 501 502503 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.