Bottom - HP zbook 15 G3 Maintenance And Service Manual

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14 Chapter 2 External component identification
Power connector
Battery light
Speakers
Vents
Description
Connects an AC adapter.
When AC power is connected:
● White: The battery charge is greater than 90 percent.
● Amber: The battery charge is from 0 to 90 percent.
Off: The battery is not charging.
●
When AC power is disconnected (battery not charging):
● Blinking amber: The battery has reached a low battery
level. When the battery has reached a critical battery level,
the battery light begins blinking rapidly.
Off: The battery is not charging.
●
Description
Produce sound.
Enable airflow to cool internal components.
NOTE: The computer fans start up automatically to cool
internal components and prevent overheating. It is normal
for the internal fans to cycle on and off during routine
operation.