Apple Macbook 13inch Users Guide

							101
AppendixA
 
ASpecifications
You can use System Profiler to find out detailed 
information about your MacBook.
You can find out the amount of built-in memory, hard disk size, devices connected, the 
product serial number, and more. To access the information in System Profiler, choose 
Apple () > About This Mac from the menu bar and then click More Info, or open 
System Profiler, located in /Applications/Utilities/.
Click the triangles in the window 
to show and hide information in 
the different categories. 
						

							102 Appendix A   Specifications
 
Operating Environment
ÂOperating temperature:  50° F to 95° F (10° C to 35° C)
ÂAltitude:  3048 m (10,000 ft.) maximum
ÂRelative humidity:  0% to 90% noncondensing
Power Adapter
ÂInput:  AC 100–240 volts ( V ), 50/60 hertz (Hz)
ÂOutput:  DC 16.5 V @ 3.65 A
Battery
ÂOutput:  DC 10.8 V 
ÂCapacity:  55 Wh 
More information is available on the Apple website at www.apple.com/macbook and 
www.apple.com/support. 
						

							103
AppendixB
 
BSafety, Use, and 
Care Information
Read this important MacBook safety and 
maintenance information.
Apple products are designed and evaluated to the latest standards for safety of 
information technology equipment. However, to ensure safe usage, it is important that 
safety instructions marked on the product and in the documentation are followed.
Understanding General Safety Instructions
Read and follow all instructions marked on the product and in this manual before 
operating your MacBook. Keep these instructions handy for reference by you and 
others.
ÂSet up your MacBook on a stable work surface.
ÂKeep your computer away from sources of liquids, such as drinks, washbasins, 
bathtubs, shower stalls, and so on.
ÂProtect your computer from dampness or wet weather, such as rain, snow, and fog. 
						

							104 Appendix B   Safety, Use, and Care Information
 
ÂFor your own safety and that of your equipment, always take the following 
precautions. Disconnect the power plug (by pulling the plug, not the cord), remove 
the battery, and disconnect any other cables if any of the following conditions exists:
ÂYou want to install memory.
ÂYou want to remove any parts.
ÂThe power cord or plug becomes frayed or otherwise damaged.
ÂYou spill something into the case.
ÂYour computer is exposed to rain or any other excess moisture.
ÂYour computer has been dropped or the case has been otherwise damaged.
ÂYou suspect that your computer needs service or repair.
ÂYou want to clean the case (use only the recommended procedure described later).
ÂThe MacBook power adapter port contains a magnet. Do not place magnetically 
sensitive material or devices within 1 inch (25 mm) of this port.
ÂNever push objects of any kind into the MacBook ventilation openings.
ÂThe battery in the MacBook may present a risk of fire or burn if mistreated. Do not 
disassemble, heat above 212º F (100º C), or incinerate. Replace the battery only with 
an Apple-authorized battery for this product. Use of another battery may present a 
risk of fire or explosion. Dispose of used batteries promptly according to your local 
environmental guidelines. 
						

							Appendix B   Safety, Use, and Care Information105
 
Setting Up Your MacBook and Power Adapter
Ensure the AC plug or AC power cord is fully inserted into the power adapter before 
plugging the adapter into a power outlet. For best results, connect the adapter using 
the AC power cord and use a grounded power outlet.
Use only the power adapter that came with your MacBook. Adapters for other 
electronic devices (including MacBook Pro models and other portable computers) 
might look similar, but they can negatively affect your computer’s performance or 
damage your computer.
The power adapter may become hot during normal use of your MacBook. Always allow 
adequate ventilation around the adapter and use care when handling it during or 
immediately after operation. When possible, place the power adapter on a hard flat 
surface to dissipate the heat.
Never force a connector into a port. Check for obstructions on the port. If the 
connector and port don’t join with reasonable ease, they probably don’t match. Make 
sure that the connector matches the port and that you have positioned the connector 
correctly in relation to the port.
If debris gets into the power adapter port, it can prevent the power adapter from 
seating properly. Remove debris gently with a cotton swab. 
						

							106 Appendix B   Safety, Use, and Care Information
 
Using Your MacBook
When you’re using your MacBook or charging the battery, it is normal for the bottom of 
the case to get warm. For prolonged use, place your MacBook on a flat, stable surface. 
Do not leave the bottom of your MacBook in contact with your lap or any surface of 
your body for extended periods. Prolonged contact with your body could cause 
discomfort and potentially a burn.
The bottom of the MacBook case functions as a cooling surface that transfers heat 
from inside the computer to the cooler air outside. The bottom of the case is raised 
slightly to allow airflow that keeps the unit within normal operating temperatures. 
In addition, warm air is vented from the slots in the back of the case.
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 an opening such as the optical drive slot or get stuck inside a port. Also, keep 
magnetically sensitive items away from the power adapter port. Warning:  Do not place your MacBook on a pillow or other soft material when it is on, 
as the material can block the airflow vents, in particular the rear vents, and cause the 
computer to overheat. Never place anything over your keyboard when operating in 
closed-lid mode. This can cause your computer to cycle on and off which might create 
excessive heat and drain your battery. Never turn on your computer unless all of its 
internal and external parts are in place. Operating the computer when it is open or 
missing parts can be dangerous and can damage your computer. 
						

							Appendix B   Safety, Use, and Care Information107
 
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 do one of the following to preserve your MacBook 
battery life:
ÂDischarge the battery 50 percent before storing your MacBook.
ÂWhen storing your computer for longer than five months, discharge the battery to 
approximately 50 percent and then remove it from the MacBook. If you are storing 
your computer for an extended period, recharge your battery to 50 percent every six 
months or so.
Cleaning Your MacBook
Follow these guidelines when cleaning the outside of your computer and its 
components:
ÂShut down your MacBook, unplug the power adapter, and remove the battery.
ÂUse 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.
ÂDon’t use aerosol sprays, solvents, or abrasives that might damage the finish.
Cleaning Your MacBook Display
To clean your MacBook screen, do the following:
ÂShut down your MacBook, unplug the power adapter, and remove the battery.
ÂDampen a clean, soft, lint-free cloth or paper with water only and wipe the screen. 
Do not spray liquid directly on the screen. 
						

							108 Appendix B   Safety, Use, and Care Information
 
Avoiding Hearing Damage
Laser Information
Do not attempt to disassemble the cabinet containing the laser. The laser beam used in 
this product is harmful to the eyes. The use of optical instruments, such as magnifying 
lenses, with this product increases the potential hazard to your eyes. For your safety, 
have this equipment serviced only by an Apple-authorized service provider.  Warning:  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.
Warning:  Making adjustments or performing procedures other than those specified 
in your equipment’s manual may result in hazardous radiation exposure.  
						

							Appendix B   Safety, Use, and Care Information109
 
Because of the optical disc drive in your computer, your computer is a Class 1 
laser product. The Class 1 label, located in a user-accessible area, indicates that the 
drive meets minimum safety requirements. A service warning label is located in a 
service-accessible area. The labels on your product may differ slightly from the ones 
shown here.
 
High-Risk Activities Warning
This computer system is not intended for use in the operation of nuclear facilities, 
aircraft navigation or communications systems, or air traffic control machines, or for 
any other uses where the failure of the computer system could lead to death, personal 
injury, or severe environmental damage.
Class 1 label Service warning label 
						

							110 Appendix B   Safety, Use, and Care Information
 
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.
Use a light touch when typing or using the trackpad and keep your hands and fingers 
relaxed. Avoid rolling your thumbs under your palms.
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