Acer Aspire 5755 Service Manual page 188

4. Press and hold <Fn + Esc> (Figure 5-15).
Figure 5-15. Pressing and holding <Fn + Esc> (1 of 2))
5. Plug in the AC adapter (Figure 5-16).
Figure 5-16. Connecting AC Adapter (2 of 2)
5-14
Fn
AC Adapter
Esc
Jumper and Connector Locations