User manual NEC POWERMATE VP

[. . . ] PROPRIETARY NOTICE AND LIABILITY DISCLAIMER The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NEC product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompanying each product. However, actual performance of each such product is dependent upon factors such as system configuration, customer data, and operator control. [. . . ] With protective measures and proper care, you can prevent problems and promote the successful operation and long life span of your computer. This chapter provides information for taking care of your computer and preparing it for moving or shipping. SYSTEM CARE Use the guidelines in the following sections to protect your system from possible damage and to maintain its condition and performance. Protective Measures There are several ways that you can protect your system from possible damage. NEC strongly recommends the following protective measures: n Connect a surge suppressor between your computer and a grounded wall outlet. A surge suppressor protects your system from sudden, transient increases and decreases in electrical power. Be sure to connect all peripherals, such as your monitor and printer, to the surge protector. The surge protector should be the only device that you plug into the wall outlet. n Avoid repeated power-on cycles because this subjects the system components to temperature variations and stress. Maintaining Your Computer 4-1 n Disconnect your system from power lines when an electrical storm threatens. Lightning can travel in on power lines and damage your monitor and the system unit. n Be sure that system power is off before you connect or disconnect a cable. To do so could damage your system and its peripherals. n Use appropriate virus detection software regularly to protect your system from computer viruses. If you plan to use software programs other than NEC supplied software, NEC strongly recommends that you take the necessary steps, such as virus checks, to protect your system. n Place your computer away from direct sunlight and extreme hot and cold temperatures. The recommended operating environment is from 50°F to 95°F (10°C to 35°C). The recommended non-operating environment (shipping or storage) is from 14°F to 158°F (­10°C to 70°C). n Back up all hard disk information on a regular basis. n After turning off power, wait about five seconds for the hard disk to spin down before you power on again. n Be sure that nothing is placed on top of your system power cables. n Never use a hard disk parking program with your computer. The system hard disk parks its heads automatically whenever you turn off system power. n Prevent dust from entering your system by covering it when it is not in use. 4-2 Maintaining Your Computer Routine Care Maintain the condition of your system by periodically following the general procedures listed below. For safety, power off and unplug your system, monitor, and any external options before cleaning them. n Clean the outside of the computer with a soft clean cloth. You can remove stubborn stains with a cloth slightly dampened with a mild detergent. Never use a strong cleaner or solvent on any part of the system. n Check the system regularly for any loose material (such as paper, books, magazines) that blocks air circulation around your unit. n Keep food and liquids away from your computer. n Periodically clean the keyboard with a vacuum cleaner brush attachment. Do not use any liquid cleaners on the keyboard because they can damage the keyboard. If an object, such as a paper clip, falls into the keyboard, turn the keyboard over and gently shake it. n Clean the monitor screen with a glass cleaner and wipe it with a clean, lint-free cloth. Or use wet/dry cleaning pads manufactured for monitor screens. Backup Backup procedures are important for the efficient and effective use of your computer. The Setup utility provides a backup reminder option (see Chapter 4). Maintaining Your Computer 4-3 See your MS-DOS and Windows for Workgroups documentation for information about backup procedures. Make backup copies of your program and data files that are on diskette and on the hard disk. The standard practice for diskette backup is to copy each diskette, store the original in a safe place, and use the copy as your working diskette. [. . . ] A device that links computers over a telephone line. O operating system Set of programs that manage the overall operation of the computer. overwrite Storing information at a location where information is already stored, thus destroying the original information. P parallel interface Interface that communicates eight bits at a time. parallel printer A printer with a parallel interface. parameter A characteristic of a device or system. Glossary-6 password A string of characters that the user must enter before the system allows access or system privileges. peripheral Input or output device not under direct computer control. Tiny dots that make up a screen image. port Provides the means for an interface between the microprocessor and external devices. A cable connector is usually plugged into the port to attach the device to the computer. processor In a computer, a functional unit that interprets and executes instructions. prompt A special symbol indicating the beginning of an input line. Also a message that appears on the screen indicating that the user must take a certain action. R RAM Random Access Memory. [. . . ]