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External component identification
Maintenance and Service Guide 2–5
Lights
✎
Your computer may look slightly different from the illustration in this section.
Item Component Description
(1) Caps lock light On: Caps lock is on.
(2) Info Center/QuickLook light ■ On: The computer is on.
■ Blinking (5 times):
❐ When the computer is on, press the button to launch Info Center.
❐ When the computer is off or in Hibernation, press the button to launch
QuickLook.
■ Off: The computer is off or in the Sleep (Standby in Windows XP) or
Hibernation state.
(3) Wireless light ■ Blue: An integrated wireless device, such as a WLAN device and/or a
Bluetooth device, is on.
■ Amber: All wireless devices are off.
(4) Volume mute light ■ Turquoise: Computer sound is on.
■ Amber: Computer sound is off.
(5) Volume down light Blinking: The volume scroll zone is being used to decrease speaker volume.
(6) Volume up light Blinking: The volume scroll zone is being used to increase speaker volume.
(7) Power light ■ On: The computer is on.
■ Blinking: The computer is in the Sleep state (Standby in Windows XP).
■ Off: The computer is off or in Hibernation.