AVM OVATION MA 8.3, Руководство по эксплуатации

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OVATION MA / SA 8.3 19
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The remote operating mode is selected but no compatible
AVM preamplifier model is connected. Select another opera-
ting mode (see section 2.6 Operating modes).
3.2.4 After switching off the preamplifier, the
power amplifier does not automatically go into
standby mode (after about 6 minutes), although
the operating mode "auto" is selected
Check to see if you can hear any humming or chirping noise
from the speakers even after the preamplifier has been swit-
ched off. If this is the case, interference in the cable will
interfere with the automatic switch-on/off function. It inter-
prets the interference as a music signal and therefore does
not switch off the device.
Solution: Position your cables in a different way, so that no
interference is interspersed. Check the pin assignment of
your balanced XLR cables (see section 1.2.1 Pin assignment).
3.2.5 Humming during music playback
The cause is usually a ground loop caused by an antenna
amplifier or cable. Check whether the humming decreases if
you disconnect the antenna cable from your tuner (if connec-
ted, also from a TV). If this should help, a sheath current filter
must be installed in each antenna cable of the connected
receiver.
Cable fault: The shield of an audio cable is interrupted, the
RCA plug does not have a good ground contact (bend it care-
fully). Check the pin assignment of your balanced XLR cables
(see section 1.2.1 Pin assignment).