Dell Latitude C840 User Guide - Page 3

Device Status Lights, Air Vents, Keyboard Status Lights, NOTICE, CAUTION

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Device Status Lights Device Status Lights Turns on when you turn on the computer. Turns on when the computer reads or writes data. NOTICE: To avoid loss of data, never turn off the computer while the light is flashing. Turns on steadily or blinks when the computer is in a power management mode. It also blinks to indicate battery charge status. If the computer is connected to an electrical outlet, the light operates as follows: ¡ Solid green: The battery is charging. ¡ Flashing green: The battery is fully charged. If the computer is running on a battery, the light operates as follows: ¡ Off: The battery is adequately charged (or the computer is turned off). ¡ Flashing orange: The battery charge is low. ¡ Solid orange: The battery charge is critically low. Air Vents - The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating. NOTE: The computer turns on the fans when the computer gets hot. The fans may make noise, which is normal and does not indicate a problem with the fan or the computer. CAUTION: Do not push objects into the air vents or openings of your computer. Doing so can cause fire or electric shock by shorting out interior components. Keyboard Status Lights

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Device Status Lights
If the computer is connected to an electrical outlet, the
light operates as follows:
¡
Solid green: The battery is charging.
¡
Flashing green: The battery is fully charged.
If the computer is running on a battery, the
light operates as follows:
¡
Off: The battery is adequately charged (or the computer is turned off).
¡
Flashing orange: The battery charge is low.
¡
Solid orange: The battery charge is critically low.
Air Vents
—
The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
Keyboard Status Lights
Device Status Lights
Turns on when you turn on the computer.
Turns on when the computer reads or writes data.
NOTICE:
To avoid loss of data, never turn off the computer while the
light is flashing.
Turns on steadily or blinks when the computer is in a power management mode. It also blinks to indicate battery charge status.
NOTE:
The computer turns on the fans when the computer gets hot. The fans may make noise, which is normal and does not indicate a problem with
the fan or the computer.
CAUTION:
Do not push objects into the air vents or openings of your computer. Doing so can cause fire or electric shock by shorting out interior
components.