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 ENG
BATTERIES
REPLACE THE BATTERIES
When the battery light blinks red, the batteries must be replaced.
NOTE:  For aircraft-powered headsets, batteries are not required for operation 
if  aircraft power is available. However, you can still install batteries when 
 connected to aircraft power as a backup in case of power interruptions or 
disconnections. See “Aircraft Connectors” on page 34.
1.  Power o the headset (see page 22).
2.  On the back of the control module, press down firmly on the finger indent and 
slide the cover down.
CAUTION: The battery cover is tethered to the control module. Do NOT attempt 
to detach it.
3.  Remove the batteries.