6.If NG in the overall MO adjustments, return to Reset NV and perform the adjustment again.

LCD display

XXXNGXX

XXX:NG item No.

7.If OK through the overall MO adjustments, press x key to return to the TEST MODE and terminate the Overall Adjust- ment mode.

LCD display

XXXEnd-OK

5-4-3. Overall CD and MO adjustment items

1. Overall CD adjustment items

Item No.

Contents

 

 

312

 

313

CD electrical offset adjustment

314

 

 

 

321

CD TE gain adjustment

 

 

328

CD TWPP gain adjustment

 

 

323

CD TE offset adjustment

 

 

336

CD ABCD gain adjustment

 

 

344

CD focus gain adjustment

 

 

345

CD tracking gain adjustment

 

 

521

CD two-axis sensitivity adjustment

522

 

 

 

341

CD focus bias adjustment

 

 

2. Overall MO adjustment items

Item No.

Contents

112

 

113

MO electrical offset adjustment

114

 

 

 

221

Low reflective CD TE gain adjustment

 

 

223

Low reflective CD TE offset adjustment

 

 

236

Low reflective CD ABCD gain adjustment

 

 

244

Low reflective CD focus gain adjustment

 

 

245

Low reflective CD tracking gain adjustment

 

 

121

MO TE gain adjustment

 

 

122

MO TE offset adjustment

 

 

144

MO focus gain adjustment

 

 

145

MO tracking gain adjustment

 

 

131

MO TWPP offset adjustment

132

 

 

 

136

MO ABCD gain adjustment

 

 

134

MO TWPP gain adjustment

 

 

141

MO focus bias adjustment

– 13 –

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Sony MZ-E90 service manual Overall CD and MO adjustment items, Overall CD adjustment items

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.