08_09
6.6 POWER ON/CHARGE LED Status
If LED is…
TRANSMITTER…
…lighting green:
...
is connected to AC power and audio
source and receives signal. Headpho-
nes are not on the transmitter, charging
function is off.
…lighting orange:
...
is connected to AC and audio source
and receives signal. Headphones
are on the transmitter, charging
function is on.
…lighting red:
...
has detected no signal for several
minutes, headphones are on the trans
mitter, charging function is on.
…dark:
...
has detected no signal for several
minutes, headphones are not on the
transmitter, charging function is off, OR
...
is not connected to AC power.
7 IMPORTANT NOTES
1. Operating switches on or connecting the transmitter to your
audio source may cause clicks which at high volume settings
may affect your hearing. Therefore, be sure to set the
VOLUME
control on the headphones to
minimum
before
switching between different sources (tuner, turntable, CD
player, etc.) or connecting the transmitter.
2. Listening over headphones at high volume levels, particularly
over extended periods of time, may damage your hearing.
3. Your K 930 is a radio frequency device
that conforms to the strict European standards. For physical
reasons that have nothing to do with the quality of the product,
extremely strong interference sources may affect reception.
> In order to maintain interference-free listening pleasure,
do not operate your K 930 in the close vicinity of radio
equipment, cellular telephones, or directly above TV or
computer monitor picture tubes
(see fig. 10).
The supplied connecting cable is long enough to allow the
transmitter to be placed at a safe distance from interference
sources. Interference caused by other users of the 864 MHz
LPD band are beyond AKG’s control.
8 Specifications
>
SYSTEM PERFORMANCE
Modulation:
FM
Carrier frequency band:
864 MHz (LPD band)
Selectable carrier frequencies:
FREQ 1:
863.5 MHz
FREQ 2:
864.0 MHz
FREQ 3:
864.5 MHz
>
T 930 TRANSMITTER
Power supply:
9 V DC, 500 mA
Radiation angle:
approx. 360°
Max. radiated power:
10 mW ERP (Equivalent Radiated Power)
Max. range (free field*):
approx. 100 m
Weight:
approx. 275 g
>
K 930 HEADPHONES
Power supply:
3 VDC (2 x 1.2 V, 300 mAh AAA size
NiCd rechargeable batteries supplied)
Battery life:
approx. 10 hours (NiCd rechargeable batteries)
Frequenzgang:
20 Hz – 22.000 Hz
Max. Schalldruckpegel:
~
103 dB SPL
Distortion:
≤ 1%
Type:
semi-open dynamic headphones
Weight:
approx. 180 g
* under ideal transmission conditions
This equipment conforms to the standards listed in the
Declaration of Conformity.
To order a free copy of the Declaration of Conformity,
visit
http://www.akg.com
or contact
.
9 Troubleshooting
>
SYMPTOM
No sound
POWER ON/CHARGE LED
does not light
Mono sound on
headphones
Loud noise
Distorted sound
>
POSSIBLE CAUSE
1.
AC adapter is not connected to transmitter
and/or AC outlet.
2.
Transmitter is not connected to audio source.
3.
Connected audio source is switched off.
4.
Volume control on audio source is at zero.
5.
Batteries are low.
6.
Headphones are switched off.
7.
VOLUME control on headphones is at zero.
1.
Transmitter is not connected to AC power.
2.
Batteries are not correctly aligned with
polarity marks.
3.
Headphones are incorrectly positioned on
transmitter.
1.
Connected audio source operates in
mono mode.
2.
Transmitter is not correctly connected to
audio source.
1.
Transmitter and receiving frequencies are
not identical.
2.
Audio level at transmitter input is too low.
3.
Input signal is noisy.
4.
Batteries are dead.
5.
Transmitter position.
1.
Audio level at transmitter input is too high.
2.
Transmitter and headphones carrier
frequencies do not match.
3.
Batteries are dead.
>
REMEDY
1.
Connect AC adapter to transmitter and/or
AC outlet.
2.
Connect transmitter to audio source.
3.
Switch audio source on to feed signal to
transmitter input.
4.
Set audio source volume to desired level.
5.
Charge batteries.
6.
Switch headphones on.
7.
Set VOLUME control to desired level.
1.
Connect transmitter to AC power.
2.
Check orientation of batteries in battery
compartment.
3.
Place headphones on transmitter correctly.
1.
Switch audio source to stereo mode.
2.
Check cable connection between transmitter
and audio source.
1.
Press AUTOTUNING switch on headphones
or use FREQ selector to select different
carrier frequency and press AUTOTUNING
on headphones.
2.
Increase audio source volume.
3.
Check audio source.
4.
Charge batteries.
5.
Relocate transmitter (refer to fig. 10).
1.
Decrease audio source volume..
2.
Use FREQ selector on transmitter to select
different carrier frequency and press
AUTOTUNING switch on headphones.
3.
Charge batteries.
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21752_CorpDes_AKG_BDA_930_Int_0707.indd 14-15
11.09.2007 9:43:10 Uhr
