Apple Macbook 13inch Mid2010 Users Guide
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71 Chapter 5 Last, but Not Least Water and wet locations Keep your MacBook away from sources of liquid, such as drinks, washbasins, bathtubs, shower stalls, and so on. Protect your MacBook from dampness or wet weather, such as rain, snow, and fog. 60W MagSafe Power Adapter Use only the power adapter that came with your MacBook, or an Apple-authorized power adapter that is compatible with this product. Make sure the AC plug or AC power cord is fully inserted into the power adapter before plugging the adapter into a power outlet. The power adapter may become very warm during normal use. The MagSafe Power Adapter complies with the user-accessible surface temperature limits defined by the International Standard for Safety of Information Technology Equipment (IEC 60950-1). To reduce the possibility of overheating the power adapter or of heat-related injuries, do one of the following: ÂPlug the power adapter directly into a power outlet. MagSaf e connec tor AC plug MagSaf e Power A\fapte r
72Chapter 5 Last, but Not Least ÂIf you’re using the AC power cord, place the power adapter on a desk, table, or on the floor in a well-ventilated location. MagSaf e connec tor MagSafe Power Adapte r AC power cord Disconnect the power adapter and disconnect any other cables if any of the following conditions exist: ÂYou want to add memory or upgrade the hard disk drive. ÂYou want to clean the case (use only the recommended procedure described on page 76). ÂThe power cord or plug becomes frayed or otherwise damaged. ÂYour MacBook or power adapter is exposed to rain, excessive moisture, or liquid spilled into the case. ÂYour MacBook or power adapter has been dropped, the case has been damaged, or you suspect that service or repair is required.
73 Chapter 5 Last, but Not Least The MagSafe power port contains a magnet that can erase data on a credit card, iPod, or other device. To preserve your data, do not place these or other magnetically sensitive material or devices within 1 inch (25 mm) of this port. If debris gets into the MagSafe power port, remove it gently with a dry cotton swab. MagSafe power specifications: ÂFrequency: 50 to 60 Hz, single phase ÂLine Voltage: 100 to 240 V ÂOutput Voltage: 16.5 V DC, 3.65 A Hearing damage Permanent hearing loss may occur if earbuds or headphones are used at high volume. You can adapt over time to a higher volume of sound that may sound normal but can be damaging to your hearing. If you experience ringing in your ears or muffled speech, stop listening and have your hearing checked. The louder the volume, the less time is required before your hearing could be affected. Hearing experts suggest that to protect your hearing: ÂLimit the amount of time you use earbuds or headphones at high volume. ÂAvoid turning up the volume to block out noisy surroundings. ÂTurn the volume down if you can’t hear people speaking near you. High-risk activities This computer is not intended for use in the operation of nuclear facilities, aircraft navigation or communications systems, air traffic control systems, or for any other uses where the failure of the computer could lead to death, personal injury, or severe environmental damage.
74Chapter 5 Last, but Not Least Laser Information for Optical Disc Drives WARNING: Making adjustments or performing procedures other than those specified in your equipment’s manual may result in hazardous radiation exposure. The optical disc drive in your computer contains a laser that is safe in normal use but that may be harmful to your eyes if disassembled. For your safety, have this equipment serviced only by an Apple Authorized Service Provider. Important Handling Information NOTICE: Failure to follow these handling instructions could result in damage to your MacBook or other property. Operating environment Operating your MacBook outside these ranges may affect performance: ÂOperating temperature: 50° to 95° F (10° to 35° C) ÂStorage temperature: -4° to 113° F (-20° to 45° C) ÂRelative humidity: 5% to 90% (noncondensing) ÂOperating altitude: 0 to 10,000 feet (0 to 3048 meters) Turning on your MacBook Never turn on your MacBook unless all of its internal and external parts are in place. Operating the computer when parts are missing may be dangerous and may damage your computer.
75 Chapter 5 Last, but Not Least Carrying your MacBook If you carry your MacBook in a bag or briefcase, make sure that there are no loose items (such as paper clips or coins) that could accidentally get inside the computer through vent openings or the optical drive slot or get stuck inside a port. Also, keep magnetically sensitive items away from the MagSafe power port. Using connectors and ports Never force a connector into a port. When connecting a device, make sure the port is free of debris, that the connector matches the port, and that you have positioned the connector correctly in relation to the port. Using the optical drive The SuperDrive in your MacBook supports standard 12 cm (4.7 inch) discs. Irregularly shaped discs or discs smaller than 12 cm (4.7 inches) are not supported. Handling glass parts Your MacBook contains glass components, including the display and trackpad. If they are damaged, don’t use your MacBook until it has been repaired by an Apple Authorized Service Provider.
76Chapter 5 Last, but Not Least Storing your MacBook If you are going to store your MacBook for an extended period of time, keep it in a cool location (ideally, 71° F or 22° C) and discharge the battery to 50 percent or less. When storing your MacBook for longer than five months, discharge the battery to approximately 50 percent. To maintain the capacity of the battery, recharge the battery to 50 percent every six months or so. Cleaning your MacBook When cleaning the outside of your MacBook and its components, first shut down your MacBook and unplug the power adapter. Then use a damp, soft, lint-free cloth to clean the computer’s exterior. Avoid getting moisture in any openings. Do not spray liquid directly on the computer. Do not use aerosol sprays, solvents, or abrasives that might damage the finish. Cleaning the MacBook screen To clean the MacBook screen, first shut down your MacBook and unplug the power adapter. Then dampen a clean cloth with just water and wipe the screen. Do not spray liquid directly on the screen.
77 Chapter 5 Last, but Not Least Understanding Ergonomics Here are some tips for setting up a healthy work environment. Keyboard and Trackpad When you use the keyboard and trackpad, your shoulders should be relaxed. Your upper arm and forearm should form an angle that is slightly greater than a right angle, with your wrist and hand in roughly a straight line. Not this This Use a light touch when typing or using the trackpad and keep your hands and fingers relaxed. Avoid rolling your thumbs under your palms. Not this This
78Chapter 5 Last, but Not Least Change hand positions often to avoid fatigue. Some computer users might develop discomfort in their hands, wrists, or arms after intensive work without breaks. If you begin to develop chronic pain or discomfort in your hands, wrists, or arms, consult a qualified health specialist. External Mouse If you use an external mouse, position the mouse at the same height as the keyboard and within comfortable reach. Chair An adjustable chair that provides firm, comfortable support is best. Adjust the height of the chair so your thighs are horizontal and your feet are flat on the floor. The back of the chair should support your lower back (lumbar region). Follow the manufacturer’s instructions for adjusting the backrest to fit your body properly. You might have to raise your chair so that your forearms and hands are at the proper angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, you can use a footrest with adjustable height and tilt to make up for any gap between the floor and your feet. Or you can lower the desktop to eliminate the need for a footrest. Another option is to use a desk with a keyboard tray that’s lower than the regular work surface.
79 Chapter 5 Last, but Not Least Built-in Display Adjust the angle of the display to optimize viewing in your environment. Do not force the display if you meet resistance. The display is not meant to open past 135 degrees. You can adjust the brightness of the screen when you take the computer from one work location to another, or if the lighting in your work area changes. More information about ergonomics is available on the web: www.apple.com/about/ergonomics Apple and the Environment Apple Inc. recognizes its responsibility to minimize the environmental impacts of its operations and products. More information is available on the web: www.apple.com/environment
80 Regulatory Compliance Information FCC Compliance StatementThis device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. See instructions if interference to radio or television reception is suspected. Radio and Television Interference This computer equipment generates, uses, and can radiate radio- frequency energy. If it is not installed and used properly—that is, in strict accordance with Apple’s instructions—it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in Part 15 of FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. You can determine whether your computer system is causing interference by turning it off. If the interference stops, it was probably caused by the computer or one of the peripheral devices. If your computer system does cause interference to radio or television reception, try to correct the interference by using one or more of the following measures: • Turn the television or radio antenna until the interference stops. • Move the computer to one side or the other of the television or radio. • Move the computer farther away from the television or radio. • Plug the computer in to an outlet that is on a different circuit from the television or radio. ( That is, make certain the computer and the television or radio are on circuits controlled by different circuit breakers or fuses.) If necessary, consult an Apple Authorized Service Provider or Apple. See the service and support information in this guide. Or consult an experienced radio/television technician for additional suggestions. Important: Changes or modifications to this product not authorized by Apple Inc. could void the EMC compliance and negate your authority to operate the product. This product has demonstrated EMC compliance under conditions that included the use of compliant peripheral devices and shielded cables (including Ethernet network cables) between system components. It is important that you use compliant peripheral devices and shielded cables between system components to reduce the possibility of causing interference to radios, television sets, and other electronic devices. Responsible party (contact for FCC matters only): Apple Inc. Corporate Compliance 1 Infinite Loop, MS 26-A Cupertino, CA 95014 Wireless Radio UseThis device is restricted to indoor use when operating in the 5.15 to 5.25 GHz frequency band. Cet appareil doit être utilisé à l’intérieur. Exposure to Radio Frequency EnergyThe radiated output power of the Wi-Fi technology is below the FCC radio frequency exposure limits. Nevertheless, it is advised to use the wireless equipment in such a manner that the potential for human contact during normal operation is minimized. FCC Bluetooth Wireless ComplianceThe antenna used with this transmitter must not be colocated or operated in conjunction with any other antenna or transmitter subject to the conditions of the FCC Grant. Canadian Compliance StatementThis device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.