T+A A 3000 HV, Руководство пользователя

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30
Trouble shooting
Many problems have a simple cause and a correspondingly simple solution. The following section describes a few
difficulties you may encounter, and the measures you need to take to cure them. If you find it impossible to solve a
problem with the help of these notes please disconnect the unit from the mains and ask your authorised

specialist
dealer for advice.
Machine does not switch
on. Cause 1:
Mains lead not plugged in correctly.
Remedy:
Check connection, push connector in firmly.
Cause 2:
Mains fuse burned out.
Remedy:
Have the mains fuse replaced by an authorised specialist workshop. The rating
of the replacement fuse must agree with the specification printed on the unit.
The unit does not respond
to commands.

Cause:
Static discharge or powerful interference (e. g. lightning) have corrupted the
processor memory.
Remedy:
Disconnect mains plug, wait about 1 minute and re-connect. Switch unit on
again.
Loud humming noise from
the loudspeakers.

Cause:
Poor contact between the Cinch(RCA) / XLR plugs and sockets, or a faulty
cable.
Remedy:
Please check all connections and cables thoroughly.
No output signal at the
loudspeakers; the device
shows 'PROTECTION'
(the PROTECTION circuit
has tripped).

Cause 1:
The PROTECTION circuit has tripped due to overheating.
Remedy:
The device has become too hot and should be left switched off for a few
minutes to cool down.
Cause 2:
Short-circuit in the speaker leads, e. g. stray wire ends touching at the speaker
terminals, or mechanical damage to the cables.
Remedy:
Check speaker leads and terminals, twist wire ends together neatly, replace
damaged cables.
Unit switches off repeatedly
at fairly high volume levels.

Cause 1:
Overheating due to heat build-up.
Remedy:
Set up the unit in such a way that an unobstructed flow of cooling air is
guaranteed.
Cause 2:
Overheating through insufficient loudspeaker impedance.
Remedy:
Use only loudspeakers of at least 4

impedance (DIN rating). That means a
minimum impedance of > 3.2

.
Flat sound image,
insufficient bass response.

Cause:
The loudspeaker cables are connected with reversed polarity.
Remedy:
Check the speaker connections at the loudspeakers and at the integrated
amplifier’s speaker terminals; correct if necessary.