Apple MacBook Pro (15-inch, 2.53 GHz, Mid 2009) - Manual (Page 69)

Chapter 5 Last, but Not Least 69
Laser Information for Optical Disc Drives
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
Operating environment Operating your MacBook Pro outside these ranges may affect
performance:
 Operating temperature: 50° to 95° F (10° to 35° C)
 Storage temperature: -4° to 113° F (-20° to 45° C)
 Relative humidity: 5% to 90% (noncondensing)
 Operating altitude: 0 to 10,000 feet (0 to 3048 meters)
Turning on your MacBook Pro Never turn on your MacBook Pro 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.
WARNING: Making adjustments or performing procedures other than those specified
in your equipment’s manual may result in hazardous radiation exposure.
NOTICE: Failure to follow these handling instructions could result in damage to your
MacBook Pro or other property.