MZ-NF810/NF810CK

Pin No.

Pin Name

I/O

 

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

51

ADDT

I

Data input from the external A/D converter

 

 

 

 

 

 

 

 

 

52

KRCK

O

L/R sampling clock (44.1KHz) output to the external A/D converter

 

 

 

 

 

 

 

53

XBCK

O

Bit clock (2.8224MHz) output to the external A/D converter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

54

FS256

O

11.2896MHz clock output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

NC

O

Filter cutoff control signal output

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

56

NC

I

Clock input from the external VCO

Not used (open)

 

 

 

 

 

 

 

 

 

57

LRCKI

I

Input terminal for the PCM data I/F/ ATRAC data I/F

Not used (open)

 

 

 

 

 

58

XBCKI

I

Input terminal for the PCM data I/F/ ATRAC data I/F

Not used (open)

 

 

 

 

 

59

DATAI

I

Input terminal for the PCM data I/F/ ATRAC data I/F

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

60

NC

Ñ

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61

EXCS

O

Chip select signal output teminal for the external SDRAM

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

62, 63

NC

Ñ

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

64 to 66

MNT0 to 2

O

DSP monitor (0) to (2) output terminal

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

67

MNT3

O

DSP monitor (3) output terminal

 

 

 

 

 

 

 

 

 

 

 

 

68

SENS

O

DSP internal status (DSP SENS monitor) signal output terminal

Not used (open)

 

 

 

 

 

 

 

 

69

TX

O

Record data output enable signal output

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

70

RECP

O

Laser power changeover signal output

Not used (open)

 

 

 

 

 

 

 

 

 

 

71

EFMO

O

EFM encode data output for the record to the REC driver

 

 

 

 

 

 

 

 

 

 

72

TFMCK

I

FMCK signal input Not used (connected to the ground)

 

 

 

 

 

 

 

 

 

 

 

 

73

OFTRK

I/O

Tracking signal input/output

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

74

XSKH

O

L circuit signal output

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

75

XSKL

O

K-SHOCK circuit signal output

Not used (open)

 

 

 

 

 

 

 

 

 

76

DCLSOUTL

O

PWM modulator signal output for the D class headphone amplifier

Not used (open)

 

 

 

 

 

77

DCLSOUTR

O

PWM modulator signal output for the D class headphone amplifier

Not used (open)

 

 

 

 

 

 

 

 

 

78 to 85

TD0 to 7

Ñ

TigerI/F data 0 to 7 terminal

Not used (open)

 

 

 

 

 

 

 

 

 

 

86

TREQ

Ñ

TigerI/F REQUEST terminal

Not used (connected to the ground)

 

 

 

 

 

 

 

 

87

TACK

Ñ

TigerI/F ACK terminal

Not used (connected to the ground)

 

 

 

 

 

 

88

PAUSE_KEY

I

Pause key detection input terminal from the switch & liquid crystal display module

 

 

 

 

89

PROTECT

I

Detection signal input terminal of the record check claw from the protect detection switch ÒHÓ: protect

 

 

 

 

 

 

 

 

90

OPT_DET

I

DIN plug detection signal input

ÒHÓ: DIN plug detect

 

 

 

 

 

 

 

 

 

91

XJACK_DET

I

LINE IN plug detection signal input

ÒLÓ: LINE or OPT plug detect

 

 

 

 

 

 

92

XMIC_DET

I

Microphone plug detection signal input

ÒLÓ: microphone plug detect

 

 

 

 

 

93

OPEN_CLOSE_SW

I

Open/close detection switch of the upper panel input terminal

ÒLÓ: when upper panel close

 

 

 

 

 

 

 

 

94

XCS_ADC

O

Chip select signal output to the A/D converter

 

 

 

 

 

 

 

 

 

 

 

95

XPD_ADC

O

Power supply control signal output to the A/D converter

 

 

 

 

 

 

 

 

 

 

 

96

CHG_CTL

O

Charge ON/OFF control signal output

Not used (open)

 

 

 

 

 

 

 

 

 

97

LCD_RST

O

Reset control signal output to the liquid crystal display module

 

 

 

 

 

 

 

98

XMUTE

O

Analog muting control signal output to the headphone amplifier

ÒLÓ: muting ON Not used (open)

 

 

 

 

 

 

 

99

XPATCH

I

Patch function detection terminal

ÒLÓ: patch function

(fixed at

ÒLÓ in this set)

 

 

 

 

100

SI0

I

Serial data input from the nonvolatile memory and liquid crystal display module

 

 

 

 

101

SO0

O

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

 

 

 

 

102

SCK0

O

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

 

 

 

 

 

103

XGUM_ON

I

Rechargeable battery detection switch input terminal

ÒLÓ: rechargeable battery in detect

 

 

 

 

 

 

104

BEEP

O

Beep sound control signal output to the headphone amplifier

 

 

 

 

 

 

 

105

XOPT_CTL

O

Power supply ON/OFF control signal output for the DIN PD drive

 

 

 

 

 

 

 

106

XHP_STBY

O

Power supply control signal output to the headphone amplifier

 

 

 

 

 

 

 

107

AOUT_SEL

O

HP/LINE changeover signal output to the headphone amplifier

Not used (open)

 

 

 

 

 

108

REC_OPR_LED

O

LED ON/OFF control signal output for the REC display

Not used (open)

 

 

 

 

 

109

MDVCC_CTL

O

Power supply control signal output for the OP modulation

Not used (open)

 

 

 

 

110

OPVCC_CTL

O

Power supply control signal output for the OP laser Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

51

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Image 51
Sony MZ-NF810 service manual Krck, Xbck, Excs, Sens, Xskh, Xskl, Xcsadc, SI0, SO0, SCK0

MZ-NF810 specifications

The Sony MZ-NF810 is a notable entry in the portable digital music player market, primarily aimed at users who seek high-quality audio playback and advanced recording capabilities. This MiniDisc player is celebrated for its compact design, making it an ideal companion for on-the-go listeners who value both audio quality and portability.

One of the standout features of the MZ-NF810 is its support for ATRAC compression technology. ATRAC, short for Adaptive Transform Acoustic Coding, provides a means to compress audio files while still maintaining impressive sound fidelity. This technology was specifically designed to optimize audio for the MiniDisc format, allowing users to enjoy longer playtimes without sacrificing sound quality. The MZ-NF810 can store up to 40 hours of music on a single battery charge, a significant advantage for audiophiles and casual listeners alike.

The device also boasts a high-resolution LCD display, providing crucial information about the currently playing track, including title, artist, and remaining battery life. Navigation is smooth and user-friendly, allowing users to access their music collections with ease. In addition, the MZ-NF810 supports USB connectivity, enabling users to transfer music and files directly from their computers. This feature eliminates the need for additional software, streamlining the process of loading music onto the device.

An important aspect of the MZ-NF810 is its recording capabilities. The player allows users to record live audio directly onto MiniDiscs, providing the freedom to capture concerts, lectures, or personal notes. The addition of various recording modes, including long-play options, enhances its utility for users who need diverse functionality.

Sound quality is further augmented with features such as Dynamic Bass Boost and a five-band equalizer, allowing users to tailor their listening experience to their preferences. The MZ-NF810 also supports various audio formats, adding to its versatility as a personal audio device.

Lastly, the MZ-NF810's sleek and lightweight design makes it not only aesthetically pleasing but also comfortable to carry, making it a practical choice for those who lead active lifestyles. In summary, the Sony MZ-NF810 MiniDisc player stands out for its audio quality, recording features, and user-friendly design, catering to music enthusiasts who demand both performance and portability in their listening experience.