Lenovo ThinkPad T420si Hardware Maintenance Manual - Page 64

Table 7. Status indicators, Bluetooth, Indicator, Meaning

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Table 7. Status indicators Indicator 1 Speaker mute Meaning Orange: The speaker is on mute. To set the speakers on mute or unmute, press the speaker mute button. 2 Microphone mute Orange: The microphone is on mute. None of the recording devices is available while the microphone mute is on by default. 3 Power on Green: Blinking green: Turn off: The computer is on and ready to use. This indicator stays lit around the power-on button whenever the computer is on. The computer is in sleep (standby) mode. The computer is off. 4 Wireless LAN, Wireless WAN, or WiMAX status Green: The wireless LAN feature (the IEEE 802.11 b/g standard, 802.11 a/b/g, or 802.11n), wireless WAN feature, or WiMax feature is on, and the radio link is ready for use, or the data is being transmitted. Off: Wireless network devices are disabled or the radio is turned off. 5 Bluetooth wireless or Wireless USB status Green: The Bluetooth wireless feature or wireless USB feature is on, and the radio link is ready for use, or the data is being transmitted. Off: The Bluetooth feature is disabled. R 6 Device access 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. When this indicator is on, do not put the computer into sleep (standby) mode or turn off the computer. Note: Do not move the system while the green device access light is on. Sudden physical shock could cause drive errors. 7 Serial Ultrabay Slim device status Green: A Serial Ultrabay Slim device is installed and in use. Blinking A Serial Ultrabay Slim device is in the process of being detached. green: Turn off: A Serial Ultrabay Slim device is ready to be attached or detached. 8 Fingerprint reader status Green: The fingerprint reader is ready to swipe. Blinking green: The fingerprint is being authenticated or has been authenticated. 9 Caps lock Blinking orange: Green: The fingerprint could not be authenticated. Caps Lock mode is enabled. To enable or disable Caps Lock mode, press the Caps Lock key. 58 Hardware Maintenance Manual

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Table 7. Status indicators
Indicator
Meaning
1
Speaker mute
Orange:
The speaker is on mute. To set the speakers on mute or unmute, press
the speaker mute button.
2
Microphone mute
Orange:
The microphone is on mute. None of the recording devices is available
while the microphone mute is on by default.
3
Power on
Green:
The computer is on and ready to use. This indicator stays lit around the
power-on button whenever the computer is on.
Blinking
green:
The computer is in sleep (standby) mode.
Turn off:
The computer is off.
4
Wireless LAN,
Wireless WAN, or
WiMAX status
Green:
The wireless LAN feature (the IEEE 802.11 b/g standard, 802.11 a/b/g,
or 802.11n), wireless WAN feature, or WiMax feature is on, and the
radio link is ready for use, or the data is being transmitted.
Off:
Wireless network devices are disabled or the radio is turned off.
5
Bluetooth
wireless
or Wireless USB
status
R
Green:
The
Bluetooth
wireless feature or wireless USB feature is on, and the
radio link is ready for use, or the data is being transmitted.
Off:
The
Bluetooth
feature is disabled.
6
Device access
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. When this indicator
is on, do not put the computer into sleep (standby) mode or turn off
the computer.
Note:
Do not move the system while the green device access light is on. Sudden
physical shock could cause drive errors.
7
Serial Ultrabay Slim
device status
Green:
A Serial Ultrabay Slim device is installed and in use.
Blinking
green:
A Serial Ultrabay Slim device is in the process of being detached.
Turn off:
A Serial Ultrabay Slim device is ready to be attached or detached.
8
Fingerprint reader
status
Green:
The fingerprint reader is ready to swipe.
Blinking
green:
The fingerprint is being authenticated or has been authenticated.
Blinking
orange:
The fingerprint could not be authenticated.
9
Caps lock
Green:
Caps Lock mode is enabled. To enable or disable Caps Lock mode,
press the Caps Lock key.
58
Hardware Maintenance Manual