mYou may have a virus on your hard disk. Obtain a virus-detection program, use it to check all your disks, and eliminate any viruses the program finds.

mYou may be using a program that’s not compatible with your computer’s system software. Check the manual that came with the program or contact the manufacturer.

mYou may have added a control panel or extension that is incompatible with other programs you use. Restart the computer, holding the Shift key down, until you see the message “Extensions off.” If this solves the problem, remove any control panels or extensions you recently installed.

mYou may need to reinstall system software. See Appendix A for instructions on installing system software.

Power

The battery is draining too fast.

mTurn down the screen brightness, turn off virtual memory, move the battery conservation slider in the PowerBook control panel to Better Conservation, or work with the power adapter plugged in.

mYour computer supplies power to the modem whenever a communications program is open. Quit your communications program if you aren’t using it.

mIf you aren’t using network services, you can also save power by turning off AppleTalk in the Chooser.

mYour battery may need to be reconditioned completely. See Chapter 6 for help.

mYou may not have the correct power adapter. Make sure that if you are using a PowerBook Duo 230 or 280, you have a 25-watt adapter, and if you are using a PowerBook Duo 280c, you have a 36-watt adapter.

mOlder PowerBook batteries do not hold a charge as well as new ones do. You may need to replace the battery.

The battery can’t be recharged.

mThere may be a loose connection. Take the battery out and put it back in the computer.

mIf all connections are OK, then the battery is probably damaged or dead. You’ll need to obtain a replacement battery from an Apple-authorized dealer.

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Chapter 10

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Apple 280C manual Power
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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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