Charging The Batteries In The Headphones; Replacing Batteries; Setting Up The System - AKG HEARO 777 SURROUND Modo De Empleo

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5.
Refer to the operating manual of your amplifier for instructions on how to listen to and disable the signal at the TAPE" or
"PLAYBACK" input. On most amplifiers, you can push the "TAPE MONITOR" switch IN to listen to the processed signal and OUT
to cut the processed signal.
Important: In this mode, the loudspeakers will also reproduce the processed signal present at the headphones output. Since IVA
and/or surround processed signals are not loudspeaker compatible, mute the loudspeakers while listening through headphones.
When listening over loudspeakers, cut the processed signal.

6.3 Charging the Batteries in the Headphones

In order to ensure the longest possible service life for the rechargeable batteries, we deliver them uncharged. Therefore, charge
the supplied batteries before first operating your headphones system.
The supplied batteries have been inserted into the headphones for your convenience.
WARNING: If you operate the headphones on dry batteries, never try to charge the batteries using the
transmitter's charging feature. This would cause serious damage to your headphone system. Dispose
of spent batteries conforming to local waste disposal rules.
1.
Use the POWER switch (1) to switch the headphones off. When the power is off, the POWER LED (2) will be dark.
2.
Referring to fig. 11, place the headphones on the transmitter such that the charging pins (19) on the transmitter (see fig. 2) will
engage the charging contacts (3) on the bottom of the left-hand earphone.
The CHARGE LED (7) on the transmitter will light red to indicate that the batteries in the headphones are being charged. If sig-
nal is present at the transmitter audio input, the CHARGE LED (7) will light orange.
The batteries will be fully charged after approximately 14 hours. (The CHARGE LED (7) will continue lighting red.). You may
leave the headphones on the transmitter for as long as you like without risking to overcharge the batteries.
Important: In order to maintain full battery capacity for as long as possible, discharge the batteries completely about once a month:
Switch the headphones ON and leave them outside the transmitter until the POWER LED (2) extinguishes.
Recharge the batteries.

6.4 Replacing 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.
1.
Remove the ear pad from the left-hand earphone as shown in fig. 9.
2.
Remove the old batteries.
3.
Referring to fig. 10, insert the new batteries into the battery compartment (4). Make sure to align the batteries with the polarity
marks inside the battery compartment.
4.
Replace the ear pad on the earphone aligning the four pins on the ear pad with the matching openings in the earphone base
plate.

6.5 Setting Up the System

1.
Remove the headphones from the transmitter.
2.
Switch ON the audio source to which the transmitter is connected.
3.
Slide the ON switch (8) on the transmitter to the left to switch the transmitter on. All front panel LEDs will flash momentarily.
Note that the transmitter will not switch on until it detects an audio signal at the INPUT L/R jacks.
If audio signal is present at the transmitter input, the CHARGE LED (7) on the transmitter will light green.
Important Note: If no signal arrives at the transmitter input for approx. 3 minutes, the transmitter will
automatically switch off and the CHARGE LED (7) will extinguish.
The transmitter will also switch off automatically if the signal level at the audio input is too low. In
this case, turn the volume or headphones control on your audio source up to the point that the trans-
mitter will switch back on.
4.
Use the INPUT LEVEL control (18) on the transmitter rear panel to set the input level so that the front panel INPUT LEVEL LED (9)
will light green intermittently or constantly and flash orange only on the loudest signal peaks.
5.
Set the FREQ. ADJUST control (17) on the transmitter to its center position.
6.
Use the POWER switch (1) to switch the headphones ON.
The green POWER LED (2) will light.
7.
Press the AUTOTUNING switch (5) on the headphones.
The Autotuning function will automatically tune the receiver to the carrier frequency set on the transmitter. After a few seconds, you
should hear the signal in the headphones clearly and free of interference.
If your first try fails, set the FREQ. ADJUST control (17) to a different position and press AUTOTUNING (5) again. Be sure not to
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