The PowerBook Duo

The computer won’t start.

mThe computer may be on, but the screen brightness or contrast may be turned down. Adjust the brightness and contrast controls.

mTry holding the Power On key down for 30 seconds, or until you hear a chime.

mThe battery may be drained. Plug in the power adapter, wait 30 minutes, and then try to turn on the computer.

mTake out the battery, unplug the power adapter, and let the computer sit for 15 minutes. Then replace the battery, plug in the power adapter and try again.

The computer won’t restart.

Try to restart your computer using one of the following methods. Try them in the order given.

mPress the x (Command), Control, and Power On keys at the same time.

When pressed at the same time, these keys turn the computer off and back on. Restarting the computer this way does not affect your RAM disk (if you created one) or its contents.

mHold down the power button (at the back of the computer) for 5 seconds to turn the computer off, then press the Power On key.

Turning the computer off with the power button erases the contents of a RAM disk.

mIf you have a floppy disk drive, restart from a floppy disk.

1.Insert the Disk Tools disk into the floppy disk drive.

2.Press the Power On key.

If the computer restarts from a floppy disk, there is probably a problem with your hard disk. You may be able to fix the problem yourself (using the Disk First Aid program or another disk repair program; see the Macintosh Reference book for help). Or you may prefer to take the computer to your Apple-authorized service provider.

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Chapter 10

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Apple 280C manual PowerBook Duo
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280C, 280 specifications

The Apple 280 and 280C are notable models in Apple's lineup that showcase the company's commitment to innovation and design. Launched as successors to earlier models, these computers were designed to cater to both professional and casual users, with features tailored for productivity, creativity, and seamless user experience.

One of the standout characteristics of the Apple 280 is its sleek and elegant design, which combines aesthetics with functionality. The lightweight chassis makes it easy to transport, appealing to users who are on the go. The display technology utilized in the Apple 280 models set a precedent for visual clarity and vibrancy, allowing users to experience richer colors and sharper images. The 280C model further enhanced this experience with a higher resolution, leading to more precise visuals that are perfect for graphic design and multimedia applications.

Under the hood, the Apple 280 and 280C are powered by robust processors that provide ample performance for demanding tasks. Multitasking is made smooth with sufficient RAM, enabling users to run multiple applications without sacrificing speed or efficiency. This level of performance is particularly advantageous for professionals in fields such as video editing, software development, and data analysis.

In terms of connectivity, the Apple 280 series is equipped with a range of ports that ensure compatibility with various peripherals, whether for personal use or professional setups. The inclusion of USB and Thunderbolt ports allows users to connect high-speed devices seamlessly, enhancing the overall productivity of the system.

Another hallmark of the Apple 280 series is the integration of advanced technologies that enhance user interaction. Features such as high-fidelity sound systems and responsive trackpads provide immersive experiences, whether users are listening to music, engaging in video calls, or navigating through applications.

Security also played a significant role in the design of the Apple 280 and 280C. These models incorporate the latest encryption technologies and secure boot processes, ensuring that user data remains protected against unauthorized access.

Overall, the Apple 280 and 280C stand as a testament to Apple's dedication to innovation, merging cutting-edge technology with user-friendly features to create devices that cater to a wide range of users. With a blend of powerful performance, elegant design, and advanced capabilities, these models have left a lasting impact on the computing landscape and continue to be relevant choices for many today.
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