Sony MZ-N707 DRAMVSS0, DVSS0, DVDD0, SSB Data, Ssb Clk, Vrec PWM, Vl Pwm, Vc Pwm, IFVDD0, IFVSS0

Page 49

MZ-N707

•IC801 CXD2677-202GA (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR, 16M BIT D-RAM)

Pin No.

Pin Name

I/O

 

 

 

Description

 

 

 

 

 

 

1

NC

O

Load address strobe signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

2

NC

I

Test input terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

 

3 to 7

NC

O

Address signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

8, 9

NC

I/O

Two-way data bus terminal for D-RAM

Not used

 

 

10, 11

DRAMVDD0, 1

—

Power supply terminal (for D-RAM) (+2.4V)

 

 

 

12, 13

DRAMVSS0, 1

—

Ground terminal (for D-RAM)

 

 

 

 

 

 

 

 

 

 

 

 

14, 15

NC

I/O

Two-way data bus terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

 

16 to 19

NC

O

Address signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

20

NC

O

Column address strobe signal output terminal for D-RAM

Not used

 

 

 

 

 

 

 

 

21

NC

I

Test input terminal for D-RAM

Not used

 

 

 

22, 23

NC

O

Address signal output terminal for D-RAM

Not used

 

 

24

DVSS0

—

Ground terminal (for the DSP block)

 

 

 

 

25

DVDD0

—

Power supply terminal (for the DSP block) (+1.5V)

 

 

 

 

 

 

 

 

26

OFTRK

I

Off track signal input from the DSP monitor (3)

 

 

 

 

 

 

27

SSB DATA

I/O

SSB data input/output with the RF amplifier and the remote commander attached headphone

 

 

 

 

 

 

 

 

28

SSB CLK

O

SSB clock output to the RF amplifier

 

 

 

 

 

 

 

 

29

VREC PWM

O

PWM signal output for the Over write head drive power supply voltage control to the power

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

VL PWM

O

PWM signal output for the laser power supply voltage control to the power control

31

VC PWM

O

PWM signal output for the system power supply voltage control to the power control

 

 

 

 

 

32

NC (VD PWM)

O

VD power supply voltage control signal output terminal

Not used

 

 

 

 

 

 

 

 

 

 

33

NC

—

Not used

 

 

 

 

 

 

 

 

 

 

34

IFVDD0

—

Power supply terminal (for the microcomputer I/F block) (+2.3V)

 

 

 

 

 

 

35

IFVSS0

—

Ground terminal (for the microcomputer I/F block)

 

 

36

OPT DET

I

DIN plug detection signal input terminal

“H”: DIN plug

 

37

XJACK DET

I

LINE IN plug detection signal input terminal

“L”: LINE or OPT plug

 

 

 

 

38

XMIC DET

I

Microphone plug detection signal input terminal “L”: microphone plug

 

 

 

 

39

OPEN CLOSE

I

Open/close detection switch of the upper panel input terminal

SW

“L”: when upper panel close

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40, 41

SET CODE0, 1

I

Input terminal for the set (open in this set)

 

 

 

 

 

 

 

 

 

 

42, 43

SET CODE2, 3

I

Input terminal for the set (fixed at “L” in this set)

 

 

44

XPATCH

I

Patch function detection signal input terminal

“L”: patch function Not used

45

SI0

I

Serial data input from the nonvolatile memory

 

 

 

 

 

 

46

SO0

O

Serial data output to the nonvolatile memory, A/D converter and liquid crystal display element

module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

47

SCK0

O

Serial clock signal output to the nonvolatile memory, A/D converter and liquid crystal display

element module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

48

XGUM ON

I

Rechargeable battery detection switch input terminal

“L”: there is rechargeable battery

Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

BEEP

O

Beep sound control signal output to the headphone amplifier

50, 51

TEST1, TEST0

I

Input terminal for the main test (normally fixed at “L”)

 

 

52

KDO

O

Data output terminal

Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

53

KRB

I

Ready/busy signal input terminal

Not used

 

 

 

 

 

 

 

 

 

 

 

54

KCLK

O

Clock signal output terminal Not used

 

 

 

 

 

 

 

 

 

 

 

 

55

KCS

O

Chip select signal output terminal

Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

56

KDI

I

Data input terminal

Not used

 

 

 

 

 

49

Page 48 Page 50
Image 49
Page 48 Page 50
Contents 873-458-01 SpecificationsMZ-N707 Disassembly Table of ContentsDiagrams Flexible Circuit Board RepairingSystem requirements Section Servicing NotesSection General Looking at the controlsDisassembly Flow Section DisassemblyUpper Panel Section Case LowerMechanism Deck MT-MZN707-177 LCD MODULE, Upper Panel SUB AssyMain Board Gear SA Screw M1.4 OP Service Assy LCX-5RHolder Assy Gear HA Setting Method of Test Mode Section Test ModeOperation in Setting the Test Mode Releasing the Test ModeManual Mode Configuration of Test ModeTransition Method in Manual Mode N u a lSELF-DIAGNOSIS Result Display Mode Overall Adjustment ModeSelf-Diagnosis Result Display Mode Setting Method 8 S 1 BDescription of Error Indication Codes Reset the Error Display CodeSetting Method of Reset the Error Display Code Description of Indication HistoryV r Sound Skip Check Result Display ModeA t U l R s R y M p # # # # # # L a Y * * 0C O K * * 8 T O K * * 8S N V C C Section Electrical AdjustmentsS O K ? S e tT F l g * * 7 C d G n * * 3R e c 0 * * 7 R e c 1 * * 7P b 3 * * 7 P b 2 * * 7P b 4 * * 7 U m * * 8L P W M * * 7 Power Supply Manual AdjustmentH P W M * * 7 P w m H * * 7 P w m L * * 7C p w L * * 7 C p w H * * 7S e r T T m p * * 0E f P w I t P wMain Board Component Side IC501S y 1 S y * * 0S t CD and MO Overall Adjustment Items Adjustment Method of CD and MO Overall Adjustment Mode# # # S 0 0 0 Resume Clear Setting MethodS C l r 0 Resume ClearServicing Notes PreparationPre-check Rewriting the Patch DataMZ-N707 MZ-N707 Block Diagram SERVO/USB Section Section DiagramsBlock Diagram Audio Section Block Diagram DISPLAY/KEY CONTROL/POWER Supply Section Lead Layouts Main Board Component Side Semiconductor LocationIC902 Components identified by mark 0or dotted F1VM Schematic Diagram Main Board 3/4 See page 42 for Waveforms KCT 22.7 ∝ s WaveformsIC302 TA2131FL EL IC Block Diagrams IC301 AK5354VT-E2IC501 SN761057A IC551 SC111258FCR2 IC601 XPC18A22AFCR2 IC901 XPC18A32FCR2 IC PIN Function Description DVSS0 DRAMVSS0DVDD0 SSB DataVG CTL TrstAout SEL REC OPR LEDVbus DET Vref MONWK DET REC KEYVrefl DavddAoutl VrefrDVDD3 DVSS3IFVDD3 IFVSS3Flashvss FlashvddUpper PANEL, Case Lower Section Section Exploded ViewsMT-MZN707-177 Main board section Chassis Section101 104 102 103 Main Board Section301 353 Section Main Electrical Parts ListMain 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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