HP DV4 manual Lights

External component identification

Lights

Item	Component	Description
1	Power lights (2)*	On—The computer is on.
		Flashing—The computer is in Sleep.
		Off—The computer is off or in Hibernation.
2	Battery light	On—The battery is charging.
		Flashing—The battery reaches a low battery level or a critical battery level.
		Off—If the computer is connected to an external power source, the light is off
		when all batteries in the computer are fully charged. If the computer is not
		connected to an external power source, the light is off until the battery
		reaches a low battery level.
3	Drive light	Flashing—The hard drive or the optical drive is being accessed.
		On—HP ProtectSmart Hard Drive Protection has temporarily parked the
		internal hard drive, and if present, the hard drive in the SmartBay.
4	Caps lock light	On—The caps lock is on.
5	Volume Mute light	White—The computer sound is on.
		Amber—The computer sound is off.
6	Volume Down light	On—Decreases speaker volume.
7	Volume Up light	On—Increases speaker volume.
8	Num lock light	On—The num lock is on or the embedded numeric keypad is enabled.
9	Wireless light	Blue—An integrated wireless device, such as a wireless local area network
		(WLAN) device and/or a Bluetooth® device, is on.
		Amber—No wireless devices are detected.

*The two Power lights display the same information. The light on the Power button is visible only when the computer is open. The Power light on the front of the computer is visible whether the computer is open or closed.

2–2 Maintenance and Service Guide