User’s Manual 8-21
Satellite A660/A665
LAN
No display Try adjusting the contrast and brightness controls 
on the external monitor.
Press the FN + F5 hot key in order to change the 
display priority and ensure that it is not set for the 
internal display only.
Check to see if the external monitor is connected.
When the external monitor is set as the primary 
display device in extended desktop mode, it will 
not display when the computer wakes up from 
Sleep Mode if the external monitor has been 
disconnected while in Sleep Mode.
To keep this from happening, do not disconnect 
the external monitor while the computer is in 
Sleep or Hibernation Mode.
Remember to turn off the computer before 
disconnecting the external monitor.
When the display panel and an external monitor 
are set to clone mode and they are turned off by 
the timer, the display panel or the external 
monitor may not display when turned on again.
If this occurs, press FN + F5 to re-set the display 
panel and external monitor to clone mode.
Display error occurs Check that the cable connecting the external 
monitor to the computer is firmly attached.
If you are still unable to resolve the problem, 
contact your reseller, dealer or service provider.
Problem Procedure
Problem Procedure
Cannot access LAN  Check for a firm cable connection between the 
LAN jack and the LAN hub.
Wake-up on LAN 
does not work
Make sure the AC adaptor is connected. The 
Wake-up on LAN function consumes power even 
when the system is off.
If problems persist, consult your LAN 
administrator.