4.
How to connect external Devices to the Audio Box
4.1
Safety Information
When using a mobile phone in the cockpit you might break legal requirements. Please check the
currently valid regulations at the local responsible authorities of the appropriate country. We
recommend using a mobile phone with the HS 400 only when you are on ground.
4.2
Music Players
4.2.1 Connection
Use the supplied cable with the two mini jack plugs (3.5 mm).
4.2.2 Operation
• In order to avoid damage to your hearing, make sure that the volume of the external music
player is set to minimum.
• Turn on the audio box with the on/off button
.
• Adjust the volume of the external music player slowly to the desired level.
• Make sure that you can still hear all important sounds such as warning alarms.
4.3
Mobile Phones
Standard mobile phones can be connected to the HS 400. We cannot give any guarantee that all
mobile phones can be connected to the HS 400! The microphone of the HS 400 is only working
if it is powered via the PJ-068 plug.
4.3.1 Connection
To connect a mobile phone, please use the supplied cable.
Caution:
Connect the cable to the
audio box
first
, then to the mobile phone so that the mobile phone will recognise the HS 400
as headset. If your mobile phone does not have an appropriate jack socket, you can purchase
an adapter at a shop for mobile phones and accessories or you will find it in chapter 11. “Spare
Parts / Accessories”.
4.3.2 Operation
In order to avoid damage to your hearing, make sure that the volume of the mobile phone is set
to minimum and adjust the desired level slowly. Deactivate the auto-mute function with the
auto-mute button
.
5.
How to insert/replace the Batteries
Insert two AA batteries into the battery compartment
of the audio box. As an alternative you
can use rechargeable AA batteries. Observe the polarity marks on the bottom of the battery
compartment.
Insert the batteries in the same sequence as indicated in the drawings below.
If the operating control LED
starts flashing slowly, the batteries still have the capacity for an
operating time of twenty hours. If the operating control LED
flashes faster, the capacity of the
batteries is exhausted and the batteries have to be replaced by new ones. The capacity of
batteries or rechargeable batteries is different. Furthermore, please note that rechargeable
batteries can discharge when they are stored for a longer time.
6.
How to replace the Ear Pads
24 | 25
english
• Should it become necessary, replace the ear pads.
• Pull the ear pads up and remove them from the
earcups. Attach the new ear pads to the earcups.
• If other components have to be replaced, please contact
your beyerdynamic dealer.
1st battery
2nd battery
spring
spring
