HP EliteBook 840 G4 Notebook PC HP EliteBook 848 G4 Notebook PC Maintenance and Service Guide
Lights
Component Description
(1) Power light
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state, a power-saving
state. The computer shuts o power to the display and
other unneeded components.
●
O: The computer is o or in Hibernation. Hibernation is a
power-saving state that uses the least amount of power.
(2) Privacy light (select products only) On: Privacy screen is on.
O: Privacy screen is o.
(3) Microphone mute light
●
Amber: microphone sound is o.
●
O: microphone sound is on.
(4) Num lk light On: Num lock is on.
(5) Wireless light On: An integrated wireless device, such as a wireless local area
network (WLAN) device and/or a Bluetooth® device, is on.
NOTE: On some models, the wireless light is amber when all
wireless devices are o.
(6) Mute light
●
Amber: Computer sound is o.
●
O: Computer sound is on.
10 Chapter 2 External component identication