AKG HEARO DIGITAL User Instructions page 7

If you operate the headphones on dry batteries, never try to recharge these batteries.
This would cause serious damage to your headphones. Dispose of dead batteries con-
forming to local waste disposal rules.
Do not use any other charger than the supplied quick charger with the "AKG" imprint
on the connector! Using other types of chargers or AC adapters may damage the head-
phones.
1. Use the OFF/ON switch (1) to switch the headphones off.
When the power is off, the Status LED (2) will be dark.
2. Plug the charging cable (9) into the charging jack (3) on the headphones.
3. Check that the AC voltage stated on the charger is the same as that available in
your country. If it is, connect the charger (8) to a convenient AC outlet.
The Status LED (2) will be lit red to indicate the batteries inside the headphones are being
charged.
The batteries will be fully charged after approximately 2 hours. (The Status LED (2) will go
out.)
4. Unplug the charging cable (9) from the headphones and disconnect the charger (8) from
the power outlet. (The charging current is very low, so the headphones or batteries will
not be damaged even if you forget to unplug the charging cable.)
In order to maintain full battery capacity for as long as possible, discharge the batteries com-
pletely about once a month:
1. Switch the headphones on and leave them on the shelf until the Status LED (2) extin-
guishes.
2. Recharge the batteries.
The capacity of any rechargeable battery will decrease over time. If you feel that you need to
recharge the supplied batteries more often than would be convenient, you may consider
replacing the batteries with new AAA size 1.2 V rechargeable or 1.5 V alkaline dry batteries.
a b
1. Rotate the ear pad on the left-hand earphone approximately 10° CCW to unlock the bay-
onet mount and remove the ear pad.
2. Remove the dead batteries.
3. Insert the new batteries aligning them with the polarity marks inside the battery com-
partments.
4. Replace the ear pad on the earphone and rotate the ear pad approximately 10° CW to
the point that you can feel it has locked.
1. Use the OFF/ON switch (1) to switch the headphones on. The status LED (2) will be lit
green.
2. Set the frequency selector (5) on the headphones and the FREQ selector on the trans-
mitter to the same channel: 1 - 1, 2 - 2, or 3 - 3.
For further details on operation, cleaning, and troubleshooting refer to your transmitter man-
ual.
3 Operating Notes
c
Important!
Important!
Refer to fig. 1.
3.2 Discharging
Rechargeable Batteries
3.3 Replacing Batteries
Fig. 3: Removing earpads
and inserting batteries.
Refer to figs. 31 and 3b.
Refer to fig. 3c.
3.4 Setting Up the
Headphones
7