Service Manual

System diagnostic lights

Power and battery-status light/hard-drive activity light: Indicates the

battery-charge status or the hard-drive activity.

NOTE: Press Fn+H to toggle this light between power and battery-status

light and hard-drive activity light.

Hard-drive activity light

Turns on when the computer reads from or writes to the hard drive.

Power and battery-status light

Indicates the power and battery-charge status.

Solid white – Power adapter is connected and the battery has more than 5

percent charge.

Amber – Computer is running on battery and the battery has less than 5

percent charge.

Off

• Power adapter is connected and the battery is fully charged.

• Computer is running on battery and the battery has more than 5 percent

charge.

• Computer is in sleep state, hibernation, or turned off.

The power and battery-status light blinks amber along with beep codes

indicating failures.

For example, the power and battery-status light blinks amber two times

followed by a pause, and then blinks white three times followed by a pause.

This 2,3 pattern continues until the computer is turned off indicating no

memory or RAM is detected.

The following table shows different light patterns, what they indicate, and the