Lenovo ThinkPad T400 Maintenance Manual page 60

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ThinkPad T400 and R400 Hardware Maintenance Manual
Table 8. Status indicators
Indicator
1
Wireless LAN
status
2
Wireless PAN
status
R
or
3
Wireless WAN
status
4
Num lock
5
Caps lock
6
Drive in use
7
Power on
8
Battery status
9
AC power
status
10
Standby status
Meaning
Green: The wireless LAN feature is on, and the radio link is
ready for use.
Blinking green:
Data is being transmitted.
Green: Wireless PAN (Bluetooth wireless or Wireless USB) is
operational. This indicator is on when Wireless PAN is
on and not in suspend mode.
Green: The wireless WAN is on, and the radio link is ready for
use.
Blinking green:
Data is being transmitted.
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, the diskette drive, or the drive in the Serial
Ultrabay Slim device or Serial Ultrabay Enhanced
device. 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 charged between 80% to 100% of the
capacity, and being discharged between 0% to 80% of
the capacity.
Blinking green:
The battery is charged between 20% to 80% of the
capacity, and being charged.
Orange:
The battery is charged between 5% and 20% of the
capacity, and being discharged.
Blinking orange (slow):
The battery is charged between 5% to 20% of the
capacity, and being charged.
Blinking orange (rapid):
The battery is charged between 0% to 5% of the capacity.
Green: The computer is connected to the ac power supply.
Green: The computer is in standby mode.
Blinking green:
The computer is entering standby mode or hibernation
mode, or is resuming normal operation.