Sony MZ-N707 service manual T T m p * * 0, S e r, E f P w, I t P w

Page 24

MZ-N707

TEMPERATURE CORRECTION

• Adjustment Method of Temperature Correction

1.Select the manual mode of test mode, and set the item number 015 (see page 14).

Set LCD display

S e t T m p * * 0 15

**: Adjusted value

2.Measure the ambient temperature.

3.Adjust with [VOL +], [VOL --]key so that the adjusted value

(hexadecimal value) becomes the ambient temperature. (Initial value: 19h = 25 ° C, Adjusting range: 80h to 7fh (–128 ° C to +127 ° C)

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

LASER POWER CHECK

• Connection

laser power meter

Optical pick-up objective lens

digital voltmeter

MAIN board

TP (+)

TP (–)

• Checking Method

1.Select the manual mode of test mode (see page 14), and set the laser power adjusting mode (item number 010).

Set LCD display

L a s e r

010

2.Press the . key continuously until the optical pick-up moves to the most inward track.

3.Open the cover and set the laser power meter on the objective lens of the optical pick-up.

4.Press the N key, and set the laser MO read adjustment mode (item number 011).

Set LCD display

L r e f P w * *

011

5.Check that the laser power meter reading is 0.81 ± 0.08 mW.

6.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R521 at this time is below 44 mV.

7.Press the N key, and set the laser CD read adjustment mode (item number 012).

Set LCD display

H r e f P w * *

012

8.Check that the laser power meter reading is 0.97 ± 0.10 mW.

9.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R521 at this time is below 44 mV.

10.Press the N key, and set the laser MO write adjustment mode (item number 013).

Set LCD display

W r i t P w * *

013

11.Check that the laser power meter reading is 4.95 ± 0.50 mW.

12.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R521 at this time is below 80 mV.

13.Press the x/CHG key to quit the manual mode, and activate the test mode (display check mode).

Checking and Connection Location: MAIN board (see page 25)

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Contents Specifications 873-458-01MZ-N707 Table of Contents DisassemblyDiagrams Flexible Circuit Board RepairingSection Servicing Notes System requirementsLooking at the controls Section GeneralSection Disassembly Disassembly FlowCase Lower Upper Panel SectionLCD MODULE, Upper Panel SUB Assy Mechanism Deck MT-MZN707-177Main Board OP Service Assy LCX-5R Gear SA Screw M1.4Holder Assy Gear HA Section Test Mode Setting Method of Test ModeOperation in Setting the Test Mode Releasing the Test ModeConfiguration of Test Mode Manual ModeTransition Method in Manual Mode N u a lOverall Adjustment Mode SELF-DIAGNOSIS Result Display ModeSelf-Diagnosis Result Display Mode Setting Method 8 S 1 BReset the Error Display Code Description of Error Indication CodesSetting Method of Reset the Error Display Code Description of Indication HistorySound Skip Check Result Display Mode V rA t U l R s R y M p # # # # # # L a Y * * 0T O K * * 8 C O K * * 8Section Electrical Adjustments S N V C CS O K ? S e tC d G n * * 3 T F l g * * 7R e c 0 * * 7 R e c 1 * * 7P b 2 * * 7 P b 3 * * 7P b 4 * * 7 U m * * 8Power Supply Manual Adjustment L P W M * * 7H P W M * * 7 P w m L * * 7 P w m H * * 7C p w L * * 7 C p w H * * 7T T m p * * 0 S e rE f P w I t P wIC501 Main Board Component SideS y * * 0 S y 1S t Adjustment Method of CD and MO Overall Adjustment Mode CD and MO Overall Adjustment ItemsResume Clear Setting Method # # # S 0 0 0S C l r 0 Resume ClearPreparation Servicing NotesPre-check Rewriting the Patch DataMZ-N707 MZ-N707 Section Diagrams Block Diagram SERVO/USB SectionBlock Diagram Audio Section Block Diagram DISPLAY/KEY CONTROL/POWER Supply Section Lead Layouts Semiconductor Location Main Board Component SideIC902 Components identified by mark 0or dotted F1VM Schematic Diagram Main Board 3/4 See page 42 for Waveforms KCT Waveforms 22.7 ∝ sIC Block Diagrams IC301 AK5354VT-E2 IC302 TA2131FL ELIC501 SN761057A IC551 SC111258FCR2 IC601 XPC18A22AFCR2 IC901 XPC18A32FCR2 IC PIN Function Description DRAMVSS0 DVSS0DVDD0 SSB DataTrst VG CTLAout SEL REC OPR LEDVref MON Vbus DETWK DET REC KEYDavdd VreflAoutl VrefrDVSS3 DVDD3IFVDD3 IFVSS3Flashvdd FlashvssSection Exploded Views Upper PANEL, Case Lower SectionChassis Section MT-MZN707-177 Main board sectionMain Board Section 101 104 102 103301 353 Main Electrical Parts List SectionMain XPC18A22AFCR2 Resistor OPEN/CLOSE Detect EMI Filter Card Operating Instruction Revision History

MZ-N707 specifications

The Sony MZ-N707, released in the early 2000s, is a remarkable portable MiniDisc player that represents a significant leap forward in digital audio technology. Known for its compact size and impressive sound quality, the MZ-N707 quickly became a favorite among music enthusiasts during its heyday.

One of the standout features of the MZ-N707 is its advanced ATRAC (Adaptive Transform Acoustic Coding) audio compression technology. This proprietary format allows for high-quality audio playback while minimizing file size, making it easier for users to store and carry their favorite tracks. The MiniDisc format supports a variety of bit rates, enabling listeners to choose between higher quality or more storage capacity based on their personal preferences.

The MZ-N707’s sleek and lightweight design is ideal for on-the-go listening, fitting comfortably in a pocket or bag. It boasts a clear LCD display that provides essential information such as track titles, playback time, and battery life, ensuring users stay informed while enjoying their music.

Battery life is another major selling point for the MZ-N707. With the ability to run for several hours on a single charge, this player is perfect for long journeys or extended listening sessions. Additionally, it uses a rechargeable lithium-ion battery, which was a welcome feature at the time, reducing the need for frequent battery replacements and promoting environmental sustainability.

Connectivity options also make the MZ-N707 an appealing choice. It comes with an integrated USB port for easy data transfer between the player and a computer, allowing users to upload their favorite audio tracks with minimal hassle. Furthermore, it supports various audio formats, enabling compatibility with a wide range of music sources.

The MZ-N707 is equipped with a range of customizable sound settings, including equalizer presets that allow users to tailor the audio output to fit their listening preferences. This flexibility enhances the user experience, making it suitable for different genres and environments.

In summary, the Sony MZ-N707 MiniDisc player features cutting-edge technology, portability, excellent battery life, and user-friendly options that appeal to audiophiles and casual listeners alike. Its legacy is a testament to Sony's commitment to innovation in portable audio solutions during the early 21st century. Whether for casual listening or serious music collection, the MZ-N707 remains a notable device in the history of digital audio.
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