Checking the Status of the Notebook 
The main status lights on the front of the notebook report power status, battery status, and hard disk 
activity. 
Table 1-4. Main Status Lights (front of notebook) 
       
 
 
Meaning 
 
Power status 
On: notebook is on (even if the display is off). 
Blinking: notebook is in Standby mode. 
Off: notebook is off or in Hibernation mode. 
 
Hard disk drive activity 
On: notebook is accessing the hard disk drive. 
 
Battery status 
Green: The AC adapter is connected and the battery is fully charged. 
Amber: The AC adapter is connected and the battery is charging. 
Blinking: The AC adapter is connected and the battery is missing or has a fault. 
Off: The AC adapter is not connected. 
 
The keyboard status lights, located above the keyboard, indicate the states of the keyboard locks. 
Table 1-5. Keyboard Status Lights 
          
Meaning 
 
Caps Lock 
Caps Lock is active. 
 
Num Lock 
Num Lock is active. (The Keypad Lock must also be on to use the embedded 
keypad.) 
 
Keypad Lock 
The embedded keypad is active (Fn+F8). Num Lock must also be on for the 
numeric keys; otherwise, cursor control is active (as marked on an external 
keyboard). 
 
Service Manual  Product Information  1-55