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What are the LED status inidcators (lights) on the LCD? - ThinkPad Z61e, Z61m, Z61p, Z61t

The following table shows what the LED status indicators are for and what the different colors or blinking of the lights mean.
Wireless LAN statusBluetooth statusWireless WAN statusBattery statusStatus of ac powerStandby status
Power-status indicators Wireless LAN statusBluetooth statusWireless WAN statusBattery statusStatus of ac powerStandby status
Power-status indicators Battery statusStatus of ac powerStandby status

Index numberLED indicatorLED indicator meaning
1Standby status
  • Green: The computer is in standby mode.
  • Blinking green: The computer is entering standby or hibernation mode, or is resuming normal operation.
2Status of ac power
  • Green: The ac adapter is connected and the computer is operating on ac power. If a battery is installed on the computer, it is charged when this indicator is green.
  • Off: The computer is operating on battery power.
3Battery status
  • Green: The battery has more than 20% charge.
  • Orange: The battery has between 5% and 20% charge.
  • Fast blinking orange: The battery has less than 5% charge. If this indicator is blinking slowly, the battery is being charged. When the battery reaches 80% charge, the blinking stops.
If your computer is shipped with a wireless WAN feature, a Bluetooth feature, and a wireless LAN feature, you can use the following indicators:
4Wireless WAN status
  • Green: The wireless WAN feature is on, and the radio link is ready for use.
  • Blinking green: Data is being transmitted.
5Bluetooth status
  • Green: The Bluetooth feature is on, and the radio link is ready for use.
  • Blinking green: Data is being transmitted.
6Wireless LAN status
  • Green: The wireless LAN feature (the IEEE 802.11 standard) is on, and the radio link is ready for use.
  • Blinking green: Data is being transmitted.

Your computer has system-status indicators. The following shows the location and the meaning of each indicator.

System-status indicators Numeric lockCaps lockDevice accessPower onNumeric lockCaps lockDevice accessPower on

Index numberLED indicatorLED indicator meaning
1Numeric lock
The numeric keypad on the keyboard is enabled. To enable or disable the keypad, press and hold the Shift key or Fn key, and press the NmLk (ScrLk) key.
2Caps lock
Caps Lock mode is enabled. You can enter all alphabetic characters (A-Z) in uppercase without pressing the Shift key. To enable or disable Caps Lock mode, press the Caps Lock key.
3Device access
A hard disk drive or an optional drive, such as a drive in the Ultrabay Enhanced, is being used to read or write data. When this indicator is blinking, do not put the computer into standby mode, remove the device from the bay, or turn off the computer.
4Power on
The computer is on and ready to use. This indicator stays lit whenever the computer is on and is not lit when the computer is in standby mode.

Power onNumeric lockCaps lockDevice accessWireless statusBluetooth wireless statusNum lockCaps lockDrive in usePower-onBattery statusStandby statusUltrabay Enhanced statusBluetooth wireless statusBattery statusStandby status