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9
Putting the MM 450 into operation
First, connect the charging cable ¸ to the battery pack as described in
section a and then connect the charging cable ¸ to a power source as
described in section b.
Connecting the charging cable to the battery pack
You can charge the battery pack either inside or outside the headset. This
is helpful if you are using a spare battery pack (to be ordered separately).
To charge the battery pack inside the headset:
̈ Open the battery pack compartment cover º on the left earcup.
̈ Connect the charging cable ¸ to the socket for charging cable ¶ on the
headset.
To charge the battery pack outside the headset:
̈ Open the battery pack compartment cover º on the left earcup.
̈ Press the button next to the battery pack compartment and remove
the battery pack.
̈ Connect the charging cable ¸ to the socket for charging cable ¶ on the
battery pack.
Connecting the charging cable to the mains unit, to a PC or to other USB
devices
In order to charge the battery pack, you can connect the charging cable to
either the USB socket of your PC or to the supplied mains unit or to other
USB devices.
To connect the charging cable to a PC:
̈ Connect the USB plug of the charging cable ¸ to the USB socket of
your PC.
The battery pack is being charged. The LED µ on the battery pack
lights up red.
To connect the charging cable to the mains unit:
̈ Connect the charging cable ¸ to the mains unit.
̈ Plug the suitable country adapter onto the mains unit.
̈ Plug the mains unit into a wall socket.
The battery pack is being charged. The LED µ on the battery pack
lights up red.
̈ After charging, unplug the mains unit from the wall socket.
If you have charged the battery pack outside the headset:
̈ Insert the charged battery pack into the headset’s battery pack
compartment until it locks into place.
̈ Close the battery pack compartment cover º.
a
º
¸
¶
b
µ
