Pin No.

 

Pin Name

I/O

Description

50

CLV W CON

I

Spindle servo (W) drive signal input from the BD6602KUT (IC551)

 

 

 

 

 

 

51

DRV VCON

O

Driver output control terminal to the DB6602KUT (IC551) “L”: prohibited, “H”: permission

 

 

 

 

 

 

52

 

NC

Not used. (open)

 

 

 

 

 

 

53

SLED 1R CON

O

Sled motor control signal output to the BD6602KUT (IC551)

 

 

 

 

 

 

54

SLED 1F CON

O

Sled motor control signal output to the BD6602KUT (IC551)

 

 

 

 

 

 

55

SLED 2R CON

O

Sled motor control signal output to the BD6602KUT (IC551)

 

 

 

 

 

 

56

SLED 2F CON

O

Sled motor control signal output to the BD6602KUT (IC551)

 

 

 

 

 

 

57 – 60

 

NC

Not used. (open)

 

 

 

 

 

 

61

 

VSS

Ground terminal (digital system)

 

 

 

 

 

 

62

 

NC

Not used. (open)

 

 

 

 

 

 

63

RMC DTCK

I/O

TSB serial communication data input/output terminal for remote commander with headphone

 

 

 

 

 

 

64

 

S0

O

PD-IC mode select signal output

 

 

 

 

 

 

65

 

S1

O

PD-IC mode select signal output

 

 

 

 

 

 

66, 67

 

NC

Not used. (open)

 

 

 

 

 

 

68

SLD VCON

O

Sled servo control PWM signal output to the BD6602KUT (IC551)

 

 

 

 

 

 

69

 

NC

Not used. (open)

 

 

 

 

 

 

70

 

HP MUTE

O

Muting on/off control signal output to the headphone amplifier (IC301) “H”: muting on

 

 

 

 

 

 

71

 

HP STBY

O

Standby on/off control signal output to the headphone amplifier (IC301)

 

“L”: standby mode, “H”: amplifier on

 

 

 

 

 

 

 

 

 

 

 

72

 

NC

Not used. (open)

 

 

 

 

 

 

73

 

NV DI

I

Serial data input from the EEPROM (IC802)

 

 

 

 

 

 

74

 

NV DO

O

Serial data output from the EEPROM (IC802)

 

 

 

 

 

 

75

 

NV CLK

O

Serial clock signal output to the EEPROM (IC802)

 

 

 

 

 

 

76

 

NV CS1

O

Chip select signal output to the EEPROM (IC802)

 

 

 

 

 

 

77

 

ADJUST

I

Test mode institution input terminal “L”: test mode (Normally, fixed at “H”)

 

 

 

 

 

 

78

 

 

 

O

System reboot control output terminal

 

XREBOOT

 

 

 

 

 

 

79

 

VDD

Power supply terminal (+2 V) (digital system)

 

 

 

 

 

 

80

 

VSS

Ground terminal (digital system)

 

 

 

 

 

 

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Page 15
Image 15
Sony MZ-E90 service manual Pin No Pin Name Description, SLD Vcon

MZ-E90 specifications

The Sony MZ-E90 is a notable portable mini-disc player, emblematic of early 2000s technology that revolutionized how music was consumed. Launched during a time when CDs and cassette tapes were dominant, the MZ-E90 provided a compact solution for digital audio playback, embodying Sony's commitment to audio quality and portability.

One of the standout features of the MZ-E90 is its ability to record audio in real-time. Users can easily create their own mini-discs by recording tracks directly from a CD, vinyl, or even from the radio. This flexibility allowed music enthusiasts to curate personalized playlists on a single medium, which was a significant advantage over traditional physical formats.

The player utilizes Sony's ATRAC (Adaptive TRAnsform Acoustic Coding) compression technology, which enables high-quality sound reproduction in a space-efficient manner. The MZ-E90 supports MDLP (MiniDisc Long Play) mode, allowing users to store multiple albums on a single disc. This capability enhanced its appeal, especially for those with extensive music collections.

In terms of design, the MZ-E90 is compact and lightweight, making it easy to transport. The player features a user-friendly interface, equipped with a backlit LCD display that shows track information and playback status. The controls are intuitive, allowing users to navigate through their music selections effortlessly.

Battery life is another crucial aspect of the MZ-E90, offering long playback hours thanks to its efficient power management. This aspect made it a preferable choice for those on the go, as it ensured that users could enjoy their music for extended periods without frequent recharging.

Moreover, the MZ-E90 includes a headphone jack for private listening and features an integrated bass boost function that augments low-frequency sounds, enhancing the listening experience for those who enjoy richer audio. The use of high-quality components further ensures that the sound reproduction does justice to the original recordings.

While the Sony MZ-E90 may not have the mainstream recognition of today’s streaming platforms, it played a pivotal role in advancing portable digital music technology. Its combination of recording capabilities, sound quality, and portability made it a cherished device for audiophiles and casual listeners alike during its production run. The legacy of such devices remains evident in the evolution of portable music, paving the way for modern digital audio players and streaming services.