CD または DVD ドライブが取り付けられている場合は、次の取り扱い上の説 明に注意してください。

注意

本書で指定された以外の制御や調整を使用したり、手順を行うと、レーザ ーの放射の危険があります。

CD または DVD ドライブのカバーを開くと、危険なレーザーを浴びる可能性 があります。CD または DVD ドライブの内部には、修理の対象となる部品は ありません。ドライブのカバーを開けないでください。

一部の CD または DVD ドライブは、クラス 3A またはクラス 3B のレーザ ー・ダイオードを使用しています。次の記述に注意してください。

危険

CD または DVD ドライブのカバーを開くとレーザーが放射されます。光 線を見つめたり、光学器械を使って直接見たりしないでください。また直 接光線を浴びないようにしてください。

電源機構について

電源機構または次のラベルが貼られている部分のカバーは決して取り外さないで ください。

このラベルが貼られているコンポーネントの内部には、危険な電圧、強い電流が 流れています。これらのコンポーネントの内部には、保守が可能な部品はありま せん。これらの部品に問題があると思われる場合はサービス技術員に連絡してく ださい。

重要な安全上の注意 xiii

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Lenovo 3000 J manual 電源機構について

3000 J specifications

The Lenovo 3000 J series is a line of laptops designed to offer a balance of performance and affordability, targeting both home and business users who seek reliable computing solutions. Introduced in the mid-2000s, the series focuses on providing essential features that meet everyday computing needs while ensuring a user-friendly experience.

One of the main features of the Lenovo 3000 J series is its robust performance. Equipped with Intel processors, this laptop series delivers adequate processing power suitable for multitasking and handling common applications like word processors, spreadsheets, and web browsers. Depending on the exact model, users can find options with Intel Pentium and Core processors, enabling varied performance levels based on their specific needs.

In terms of memory, the Lenovo 3000 J typically offers a decent range of RAM options, allowing users to upgrade up to 2GB or more, enhancing the system's responsiveness and enabling smoother multitasking. The inclusion of a spacious hard drive, often ranging from 80GB to 120GB, provides ample storage for files and applications, making it suitable for both personal and professional use.

The design of the Lenovo 3000 J is characterized by its functional and straightforward aesthetics. Built with a sturdy chassis, the laptop ensures durability, while the well-laid-out keyboard and responsive touchpad contribute to a comfortable user experience. The laptop also boasts a 14.1 to 15.4-inch display, offering decent resolution and brightness levels for viewing daily tasks, presentations, and multimedia content.

Connectivity is another highlight of the Lenovo 3000 J series. It typically includes multiple USB ports, an Ethernet port, and an optional integrated Wi-Fi module, enabling seamless internet access and connectivity with external devices. Some models may also feature built-in optical drives for DVD-RW functionality, providing expanded media options for users.

Battery life is essential for on-the-go users, and the Lenovo 3000 J series delivers respectable performance in this aspect, offering several hours of use on a single charge. This portability, combined with a lightweight design, makes it a practical choice for students and professionals alike.

Overall, the Lenovo 3000 J series stands out for its balance of functionality, performance, and durability. It remains a solid choice for those seeking a reliable laptop for everyday tasks, whether for home use or business environments. While it may not boast cutting-edge specifications, its well-rounded design and dependable performance have made it a notable option in the affordable laptop market.