Lenovo ThinkPad G41 Hardware Maintenance Manual page 52

Product overview
Indicator
2
Num lock
3
Caps lock
4
Drive in
use
5
Power on
6
Battery
status
7
Standby
status
48
ThinkPad G40, G41
Meaning
Green: The numeric keypad on the
keyboard is enabled. To enable or
disable the keypad, press and hold
the Shift key, and press the NumLk
(ScrLk) key.
Green: Caps Lock mode is enabled. To
enable or disable Caps Lock mode,
press the Caps Lock key.
Green: Data is being read from or written
to the hard disk drive or the
diskette drive. When this indicator
is on, do not put the computer into
standby mode or turn off the
computer.
Note: Do not move the system while the
green drive-in-use light is on. Sudden physical
shock could cause drive errors.
Green: The computer is on and ready to
use. This indicator stays lit
whenever the computer is on and
is not in standby mode.
Green: The battery is in use and has
enough power. The ac adapter has
charged the battery completely.
Blinking green:
The battery is being charged, but
still has enough power to operate.
(At regular intervals, the indicator
light turns off briefly.)
Orange: The battery is being charged, but
the battery power is still low.
Blinking orange:
The battery needs to be charged.
When the indicator starts blinking
orange, the computer beeps three
times.
Note: If an unauthorized battery is installed,
this indicator starts blinking orange.
Green: The computer is in standby mode.
Blinking green:
The computer is entering standby
mode or hibernation mode, or is
resuming normal operation.