Lenovo B4301, Hardware Maintenance Manual, Page: 45 / 104

Table 1. Status indicators (continued)
Indicator Meaning
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Device access
status indicator
On: The hard disk drive or optical drive is reading or writing data.
Attention:
• When the indicator is on, do not put the computer into sleep mode or turn off the
computer.
• When the indicator is on, do not move the computer. Sudden physical shock might
cause drive errors.
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Power and battery
status indicator
• Solid green: The battery charge level is between 80% and 100%, or the battery
discharge level is between 20% and 100%.
• Slow blinking green: The battery charge level is between 20% and 80%, and
charging is continuing. When the battery charge level reaches 80%, the battery status
indicator stops blinking, but the charging might continue until the battery is 100%
charged.
• Slow blinking orange: The battery charge level is between 5% and 20%, and the
charging is continuing. When the battery charge level reaches 20%, the blinking
color changes to green.
• Solid orange: The battery discharge level is between 5% and 20%.
• Fast blinking orange: The battery charge or discharge level is 5% or less.
• Off: The battery is detached or the computer is powered off.
Fn key combinations
The following table describes the functions of Fn key combinations.
Table 2. Function key combinations
Key combination Description
Fn+Esc
• Windows 7: Change the camera and audio settings
• Windows 8: Turns on or off the camera
Fn+F1 Puts the computer into sleep mode. To resume normal operation, press
the Fn key only.
Fn+F2 Enables the backlight feature of the computer screen. To disable the feature,
press Fn+F2.
Fn+F3 Switches between the computer display and an external monitor. Note: You
also can use the P combination to switch between the computer
display and an external monitor.
Fn+F5 Enables or disables the built-in wireless networking features.
Fn+F6 Enables or disables the touch pad.
Fn+F8 Enables or disables the numeric keypad.
Fn+F9 Multimedia control: Start/Pause
Fn+F10 Multimedia control: Stop
Fn+F11
Multimedia control: Skip to the previous track
Fn+F12 Multimedia control: Skip to the next track
Fn+PgUp Has the same function as the ScrLk key on a conventional keyboard.
Fn+PrtSc Has the same function as the SysRq key on a conventional keyboard.
Chapter 5
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Lenovo product information
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