FORD 2010 F-550 v.2 - Manual (Page 97)

Compatibility with aftermarket audio systems
(headphone only mode)
When the Family Entertainment System (FES) detects that the original
radio supplied by Ford Motor Company has been removed from the
vehicle, the FES will work in a state referred to as “Headphone Only
Mode.” This mode allows the FES to operate as a standalone system,
without interface to the radio.
While operating in Headphone Only Mode, the system will have limited
functionality.
• The system will only output audio to the headphones. It will not be
capable of providing audio to the speakers.
• The available sources in FES Headphone Only Mode are DVD-DISC
and DVD-AUX, regardless of headphone channel (A or B).
• When a disc is inserted into the FES while in Headphone Only Mode,
both headphone channels (A and B) will be connected to FES-DISC.
NAVIGATION SYSTEM (IF EQUIPPED)
Your vehicle may be equipped with a navigation system. Refer to the
Navigation System supplement for further information.
SYNC
ா (IF EQUIPPED)
Your vehicle may be equipped with SYNC
௡, a hands-free communications
and entertainment system with special phone and media features. For
more information, please refer to the SYNC
௡ supplement or to the
SYNC
௡ section in the Navigation System supplement (if equipped).
Entertainment Systems
97
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)